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Eclache JP, Garcia-Tabar I, Gorostiaga EM. A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men. Eur J Appl Physiol 2024:10.1007/s00421-024-05520-4. [PMID: 38849689 DOI: 10.1007/s00421-024-05520-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 05/28/2024] [Indexed: 06/09/2024]
Abstract
PURPOSE To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (fRTs = fRT1 and fRT2) obtained from a novel, low-cost, and simple method of breakpoint determination. METHODS Fifty middle-aged males (age: 50-58 years; V ˙ o2peak: 37.5 ± 8.6 mL·Kg-1·min-1), either healthy or with chronic illnesses, underwent an incremental cycle exercise test to determine maximal oxygen uptake ( V ˙ o2max/ V ˙ o2peak), GETs and fRTs. RESULTS There were no statistical differences [P > 0.05; ES: 0.17 to 0.32, small] between absolute and relative (56-60% V ˙ o2peak) oxygen uptake ( V ˙ o2) values at GET1 with those obtained at fRT1, nor between V ˙ o2 values at GET2 with those at fRT2 (76-78% V ˙ o2peak). Heart rate (HR) at fRT1, and V ˙ o2 and HR at fRT2 showed very large correlations (r = 0.75-0.82; P < 0.001) and acceptable precision (SEE < 7-9%) in determination of their corresponding values at GET1 and GET2. The precision in the estimation of V ˙ o2 at GET1 from fRT1 was moderate (SEE = 15%), while those of power output at GET1 (SEE = 23%) and GET2 (SEE = 12%) from their corresponding fRTs values were very poor to moderate. CONCLUSION HR at fRT1 and V ˙ o2 and HR at fRT2, determined using a new objective and portable approach, may potentially serve as viable predictors of their respective GETs. This method may offer a simplified, cost-effective, and field-based approach for determining exercise threshold intensities during graded exercise.
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Affiliation(s)
- Jean P Eclache
- Laboratory of Performance, Sport-Occupational Activities-Biology-Association, Lyon-Chassieu, France
| | - Ibai Garcia-Tabar
- Society Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Portal de Lasarte, 71, 01007, Vitoria-Gasteiz, Spain.
- Physical Activity, Exercise, and Health Group, Bioaraba Health Research Institute, Vitoria-Gasteiz, Basque Country, Spain.
| | - Esteban M Gorostiaga
- Laboratory of Performance, Sport-Occupational Activities-Biology-Association, Lyon-Chassieu, France
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Sbrollini A, Marcantoni I, Lunghi T, Morettini M, Burattini L. Cardiorespiratory DB: Collection of cardiorespiratory data acquired during normal breathing, deep breathing and breath holding. Data Brief 2024; 54:110406. [PMID: 38660233 PMCID: PMC11039937 DOI: 10.1016/j.dib.2024.110406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/26/2024] Open
Abstract
The database is constituted by 50 datasets containing cardiorespiratory signals acquired from 50 healthy volunteer subjects (one dataset for each subject; 23 males and 27 females; age: 23±5 years) while performing normal breathing, deep breathing, and breath holding, and two spreadsheet files, namely the "SubjectsInfo.xlsx" and "DBInfo.xlsx" containing the metadata of subjects (including demographic data) and of acquired signals, respectively. Cardiorespiratory signals consisted in simultaneously recorded 12-lead electrocardiograms acquired by the clinical M12 Global InstrumentationⓇ digital Holter ECG recorder, and single-lead electrocardiograms and respiration signals acquired by the wearable chest strap BioHarness 3.0 by Zephyr. The database may be useful to: (1) validate the use of wearable sensors in the acquisition of cardiorespiratory data during different respiration kinds, including apnea; (2) investigate the physiological association between cardiovascular and respiratory systems; (3) validate algorithms able to indirectly extract the respiration signal from the electrocardiogram; (4) study the fatigue level induced by a series of controlled respiration patterns; and (5) investigate the effect of COVID-19 infection on the cardiorespiratory system.
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Affiliation(s)
- Agnese Sbrollini
- Cardiovascular Bioengineering Lab, Department of Information Engineering, Università Politecnica delle Marche, Ancona, Italy
| | - Ilaria Marcantoni
- Cardiovascular Bioengineering Lab, Department of Information Engineering, Università Politecnica delle Marche, Ancona, Italy
| | - Tamara Lunghi
- Cardiovascular Bioengineering Lab, Department of Information Engineering, Università Politecnica delle Marche, Ancona, Italy
| | - Micaela Morettini
- Cardiovascular Bioengineering Lab, Department of Information Engineering, Università Politecnica delle Marche, Ancona, Italy
| | - Laura Burattini
- Cardiovascular Bioengineering Lab, Department of Information Engineering, Università Politecnica delle Marche, Ancona, Italy
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3
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Buckley JP, Terada T, Lion A, Reed JL. Is breathing frequency a potential means for monitoring exercise intensity in people with atrial fibrillation and coronary heart disease when heart rate is mitigated? Eur J Appl Physiol 2024:10.1007/s00421-024-05487-2. [PMID: 38703192 DOI: 10.1007/s00421-024-05487-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/05/2024] [Indexed: 05/06/2024]
Abstract
PURPOSE Moderate-intensity aerobic exercise is safe and beneficial in atrial fibrillation (AF) and coronary heart disease (CHD). Irregular or rapid heart rates (HR) in AF and other heart conditions create a challenge to using HR to monitor exercise intensity. The purpose of this study was to assess the potential of breathing frequency (BF) to monitor exercise intensity in people with AF and CHD without AF. METHODS This observational study included 30 AF participants (19 Male, 70.7 ± 8.7 yrs) and 67 non-AF CHD participants (38 Male, 56.9 ± 11.4 yrs). All performed an incremental maximal exercise test with pulmonary gas exchange. RESULTS Peak aerobic power in AF ( V ˙ O2peak; 17.8 ± 5.0 ml.kg-1.min-1) was lower than in CHD (26.7 ml.kg-1.min-1) (p < .001). BF responses in AF and CHD were similar (BF peak: AF 34.6 ± 5.4 and CHD 36.5 ± 5.0 breaths.min-1; p = .106); at the 1st ventilatory threshold (BF@VT-1: AF 23.2 ± 4.6; CHD 22.4 ± 4.6 breaths.min-1; p = .240). % V ˙ O2peak at VT-1 were similar in AF and CHD (AF: 59%; CHD: 57%; p = .656). CONCLUSION With the use of wearable technologies on the rise, that now include BF, this first study provides an encouraging potential for BF to be used in AF and CHD. As the supporting data are based on incremental ramp protocol results, further research is required to assess BF validity to manage exercise intensity during longer bouts of exercise.
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Affiliation(s)
- John P Buckley
- School of Allied Health Professions, Keele University, Staffordshire, ST5 5BG, UK.
| | - Tasuku Terada
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Physiology, Pharmacology and Neuroscience, School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Anna Lion
- Rehabilitation Technologies Network+, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Jennifer L Reed
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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Wu F, Wu C, Wu Q, Yan F, Xiao Y, Du C. Prediction of Death in Intracerebral Hemorrhage Patients After Minimally Invasive Surgery by Vital Signs and Blood Glucose. World Neurosurg 2024; 184:e84-e94. [PMID: 38244679 DOI: 10.1016/j.wneu.2024.01.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 01/11/2024] [Indexed: 01/22/2024]
Abstract
OBJECTIVE This study examined the impact of vital signs and blood glucose levels on the long-term prognosis of intracerebral hemorrhage (ICH) patients treated with minimally invasive surgery (MIS). METHODS The patients diagnosed with ICH and treated with MIS within 24 hours of admission at the ∗∗ Hospital between January 2020 and October 2021 were included. The relationship between a range of indicators, including vital signs, blood glucose levels, and patient mortality at discharge and 3 or 12 months postdischarge were analyzed. RESULTS A total of 195 consecutive patients were included, of which 16 patients passed away during hospitalization, 29 and 34 within 3 and 12 months postdischarge, respectively. The multivariate analysis revealed that hospital death positively correlated with age ≥66.50 years, fasting blood glucose ≥8.25 mmol/L on the third day after MIS, systolic blood pressure ≥166.00 mmHg on the third day, and heart rate ≥89.50 beats/min at discharge (area under the curve [AUC] = 0.927). Death at 3 months positively correlated with male sex, blood glucose before dinner ≥8.15 mmol/L on the second day after MIS, body temperature ≥36.95°C at discharge, and heart rate ≥89.50 beats/minute at discharge (AUC = 0.810). Death at 12 months positively correlated with age ≥61.50 years, body temperature ≥36.95°C at discharge, and heart rate ≥92.50 beats/min on the third day after MIS (AUC = 0.824). CONCLUSIONS The prognosis of ICH patients after MIS is closely related to their vital signs and blood glucose levels at various stages of hospitalization.
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Affiliation(s)
- Fang Wu
- Department of Neurology, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; School of Medicine, Chongqing University, Chongqing, China
| | - Chuyue Wu
- Department of Neurology, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; School of Medicine, Chongqing University, Chongqing, China; Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qingyuan Wu
- Department of Neurology, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; School of Medicine, Chongqing University, Chongqing, China; Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Fei Yan
- School of Medicine, Chongqing University, Chongqing, China; Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China
| | - Yaping Xiao
- School of Medicine, Chongqing University, Chongqing, China; Department of Pharmacy, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China
| | - Cuiping Du
- Department of Neurology, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China; School of Medicine, Chongqing University, Chongqing, China.
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You M, Laborde S, Ackermann S, Borges U, Dosseville F, Mosley E. Influence of Respiratory Frequency of Slow-Paced Breathing on Vagally-Mediated Heart Rate Variability. Appl Psychophysiol Biofeedback 2024; 49:133-143. [PMID: 38063977 DOI: 10.1007/s10484-023-09605-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2023] [Indexed: 02/16/2024]
Abstract
Breathing techniques, particularly slow-paced breathing (SPB), have gained popularity among athletes due to their potential to enhance performance by increasing cardiac vagal activity (CVA), which in turn can help manage stress and regulate emotions. However, it is still unclear whether the frequency of SPB affects its effectiveness in increasing CVA. Therefore, this study aimed to investigate the effects of a brief SPB intervention (i.e., 5 min) on CVA using heart rate variability (HRV) measurement as an index. A total of 75 athletes (22 female; Mage = 22.32; age range = 19-31) participated in the study, attending one lab session where they performed six breathing exercises, including SPB at different frequencies (5 cycles per minute (cpm), 5.5 cpm, 6 cpm, 6.5 cpm, 7 cpm), and a control condition of spontaneous breathing. The study found that CVA was significantly higher in all SPB conditions compared to the control condition, as indexed by both root mean square of the successive differences (RMSSD) and low-frequency HRV (LF-HRVms2). Interestingly, LF-HRVms2 was more sensitive in differentiating the respiratory frequencies than RMSSD. These results suggest that SPB at a range of 5 cpm to 7 cpm can be an effective method to increase CVA and potentially improve stress management and emotion regulation in athletes. This short SPB exercise can be a simple yet useful tool for athletes to use during competitive scenarios and short breaks in competitions. Overall, these findings highlight the potential benefits of incorporating SPB into athletes' training and competition routines.
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Affiliation(s)
- Min You
- School of Teacher Education, University of Weifang, Weifang, China.
- UFR Psychologie, UR 3918 CERREV, Université de Caen Normandie, Caen, 14032, France.
| | - Sylvain Laborde
- Department of Performance Psychology, Institute of Psychology, German Sport University, Cologne, Germany
- UFR STAPS, UR 7480 VERTEX, Université de Caen Normandie, Caen, 14032, France
| | - Stefan Ackermann
- Department of Performance Psychology, Institute of Psychology, German Sport University, Cologne, Germany
| | - Uirassu Borges
- Department of Health & Social Psychology, Institute of Psychology, German Sport University, Cologne, Germany
| | - Fabrice Dosseville
- UFR STAPS, UR 7480 VERTEX, Université de Caen Normandie, Caen, 14032, France
- CNDAPS, Colombelles, F-14460, France
| | - Emma Mosley
- Department of Rehabilitation and Sport Sciences, School of Sport, Bournemouth University, Fern Barrow, Poole, Dorset, BH12 5BB, UK
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Argüello-Prada EJ, Marcillo Ibarra KD, Díaz Jiménez KL. The use of successive systolic differences in photoplethysmographic (PPG) signals for respiratory rate estimation. Heliyon 2024; 10:e26036. [PMID: 38370197 PMCID: PMC10869914 DOI: 10.1016/j.heliyon.2024.e26036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/20/2024] Open
Abstract
Most PPG-based methods for extracting the respiratory rate (RR) rely on changes in the PPG signal's amplitude, baseline, or frequency. However, several other parameters may provide more valuable information for accurate RR computation. In this study, we explored the capabilities of the respiratory-induced variations in successive systolic differences (RISSDV) of PPG signals to estimate RR. We partitioned fifty-three publicly available recordings into eight 1-min segments and identified peaks and troughs of the PPG signals to quantify respiratory-induced variations in amplitude (RIAV), baseline (RIIV), frequency (RIFV), and peak-to-peak amplitude differences (RISSDV). RR values were extracted by determining the peak frequency of the power spectral density of the four variations and the reference respiratory signal. We assessed each feature's performance by computing the root-mean-squared (RMSE) and mean absolute errors (MAE). RISSDV errors were significantly lower than those of RIAV (RMSE and MAE: p < 0.001), RIIV (RMSE: p < 0.01; MAE p < 0.05), and RIFV (RMSE and MAE: p < 0.001), and it appeared less sensitive to absent or missed PPG pulses than respiratory-induced frequency variations. Further research is necessary to extrapolate these findings to subjects under ambulatory rather than stationary conditions, including pediatric and neonatal populations.
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Affiliation(s)
- Erick Javier Argüello-Prada
- Programa de Bioingeniería, Facultad de Ingeniería, Universidad Santiago de Cali, Cali-Colombia, Calle 5 # 62-00 Barrio Pampalinda, Santiago de Cali, Valle del Cauca, Colombia
| | - Katherin Daniela Marcillo Ibarra
- Programa de Bioingeniería, Facultad de Ingeniería, Universidad Santiago de Cali, Cali-Colombia, Calle 5 # 62-00 Barrio Pampalinda, Santiago de Cali, Valle del Cauca, Colombia
| | - Kevin Leonardo Díaz Jiménez
- Programa de Bioingeniería, Facultad de Ingeniería, Universidad Santiago de Cali, Cali-Colombia, Calle 5 # 62-00 Barrio Pampalinda, Santiago de Cali, Valle del Cauca, Colombia
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Goldfine CE, Oshim MFT, Chapman BP, Ganesan D, Rahman T, Carreiro SP. Contactless Monitoring System Versus Gold Standard for Respiratory Rate Monitoring in Emergency Department Patients: Pilot Comparison Study. JMIR Form Res 2024; 8:e44717. [PMID: 38363588 PMCID: PMC10907933 DOI: 10.2196/44717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Respiratory rate is a crucial indicator of disease severity yet is the most neglected vital sign. Subtle changes in respiratory rate may be the first sign of clinical deterioration in a variety of disease states. Current methods of respiratory rate monitoring are labor-intensive and sensitive to motion artifacts, which often leads to inaccurate readings or underreporting; therefore, new methods of respiratory monitoring are needed. The PulsON 440 (P440; TSDR Ultra Wideband Radios and Radars) radar module is a contactless sensor that uses an ultrawideband impulse radar to detect respiratory rate. It has previously demonstrated accuracy in a laboratory setting and may be a useful alternative for contactless respiratory monitoring in clinical settings; however, it has not yet been validated in a clinical setting. OBJECTIVE The goal of this study was to (1) compare the P440 radar module to gold standard manual respiratory rate monitoring and standard of care telemetry respiratory monitoring through transthoracic impedance plethysmography and (2) compare the P440 radar to gold standard measurements of respiratory rate in subgroups based on sex and disease state. METHODS This was a pilot study of adults aged 18 years or older being monitored in the emergency department. Participants were monitored with the P440 radar module for 2 hours and had gold standard (manual respiratory counting) and standard of care (telemetry) respiratory rates recorded at 15-minute intervals during that time. Respiratory rates between the P440, gold standard, and standard telemetry were compared using Bland-Altman plots and intraclass correlation coefficients. RESULTS A total of 14 participants were enrolled in the study. The P440 and gold standard Bland-Altman analysis showed a bias of -0.76 (-11.16 to 9.65) and an intraclass correlation coefficient of 0.38 (95% CI 0.06-0.60). The P440 and gold standard had the best agreement at normal physiologic respiratory rates. There was no change in agreement between the P440 and the gold standard when grouped by admitting diagnosis or sex. CONCLUSIONS Although the P440 did not have statistically significant agreement with gold standard respiratory rate monitoring, it did show a trend of increased agreement in the normal physiologic range, overestimating at low respiratory rates, and underestimating at high respiratory rates. This trend is important for adjusting future models to be able to accurately detect respiratory rates. Once validated, the contactless respiratory monitor provides a unique solution for monitoring patients in a variety of settings.
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Affiliation(s)
- Charlotte E Goldfine
- Division of Medical Toxicology, Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Md Farhan Tasnim Oshim
- Manning College of Information and Computer Sciences, University of Massachusetts Amherst, Amherst, MA, United States
| | - Brittany P Chapman
- Department of Emergency Medicine, University of Massachusetts Chan Medical School, Worcester, MA, United States
| | - Deepak Ganesan
- Manning College of Information and Computer Sciences, University of Massachusetts Amherst, Amherst, MA, United States
| | - Tauhidur Rahman
- Halıcıoğlu Data Science Institute, University of California San Diego, San Diego, CA, United States
| | - Stephanie P Carreiro
- Department of Emergency Medicine, University of Massachusetts Chan Medical School, Worcester, MA, United States
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Chin WJ, Kwan BH, Lim WY, Tee YK, Darmaraju S, Liu H, Goh CH. A Novel Respiratory Rate Estimation Algorithm from Photoplethysmogram Using Deep Learning Model. Diagnostics (Basel) 2024; 14:284. [PMID: 38337800 PMCID: PMC10855057 DOI: 10.3390/diagnostics14030284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/29/2023] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Respiratory rate (RR) is a critical vital sign that can provide valuable insights into various medical conditions, including pneumonia. Unfortunately, manual RR counting is often unreliable and discontinuous. Current RR estimation algorithms either lack the necessary accuracy or demand extensive window sizes. In response to these challenges, this study introduces a novel method for continuously estimating RR from photoplethysmogram (PPG) with a reduced window size and lower processing requirements. To evaluate and compare classical and deep learning algorithms, this study leverages the BIDMC and CapnoBase datasets, employing the Respiratory Rate Estimation (RRest) toolbox. The optimal classical techniques combination on the BIDMC datasets achieves a mean absolute error (MAE) of 1.9 breaths/min. Additionally, the developed neural network model utilises convolutional and long short-term memory layers to estimate RR effectively. The best-performing model, with a 50% train-test split and a window size of 7 s, achieves an MAE of 2 breaths/min. Furthermore, compared to other deep learning algorithms with window sizes of 16, 32, and 64 s, this study's model demonstrates superior performance with a smaller window size. The study suggests that further research into more precise signal processing techniques may enhance RR estimation from PPG signals.
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Affiliation(s)
- Wee Jian Chin
- Department of Mechatronics and Biomedical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia; (W.J.C.); (B.-H.K.); (Y.K.T.); (S.D.)
- Centre for Healthcare Science and Technology, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
| | - Ban-Hoe Kwan
- Department of Mechatronics and Biomedical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia; (W.J.C.); (B.-H.K.); (Y.K.T.); (S.D.)
- Centre for Healthcare Science and Technology, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
| | - Wei Yin Lim
- Electrical and Computer Systems Engineering, School of Engineering and Advanced Engineering Platform, Monash University Malaysia, Bandar Sunway 47500, Selangor, Malaysia;
| | - Yee Kai Tee
- Department of Mechatronics and Biomedical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia; (W.J.C.); (B.-H.K.); (Y.K.T.); (S.D.)
- Centre for Healthcare Science and Technology, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
| | - Shalini Darmaraju
- Department of Mechatronics and Biomedical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia; (W.J.C.); (B.-H.K.); (Y.K.T.); (S.D.)
| | - Haipeng Liu
- Centre for Intelligent Healthcare, Coventry University, Coventry CV1 5RW, UK;
| | - Choon-Hian Goh
- Department of Mechatronics and Biomedical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia; (W.J.C.); (B.-H.K.); (Y.K.T.); (S.D.)
- Centre for Healthcare Science and Technology, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
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9
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Liang WM, Ji YX, Xiao J, Truskauskaitė I, Hendrixson A, Bai ZM, Ruksenas O. Respiratory patterns and physical fitness in healthy adults: a cross-sectional study. BMC Public Health 2024; 24:228. [PMID: 38243241 PMCID: PMC10797802 DOI: 10.1186/s12889-024-17687-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND The altered respiratory patterns have a significant impact on our health. However, the links between respiration patterns during spontaneous breathing and physical fitness remain unknown. Therefore, we sought to examine how the respiratory pattern during spontaneous breathing interacts with physical fitness. METHODS A total of 610 participants (aged 20-59 years) were enrolled; 163 men (age = 41 ± 11) and 401 women (age = 42 ± 9) were included for analysis. The parameters of the respiration pattern were respiration rate (RR) and inhalation/exhalation (I/E) ratio. The physical fitness components were body size, visuomotor reaction time, balance, flexibility, hand grip strength, back extension strength, vertical jump height, number of push-ups, number of sit-ups, and the maximum rate of oxygen consumption. The data were analyzed separately for two gender groups. Participants within each gender group were further divided into two age categories (young: 20-39 years, middle-aged: 40-59 years) for the analysis, and both correlational and comparative tests were used to solidify the results. RESULTS Neither RRs nor the I/E ratios were substantially correlated with physical fitness in women. In addition, the I/E ratios showed no significant correlation with physical fitness in young men, while the results from correlational and comparative tests were inconsistent in middle-aged men. Consistently, men with lower RRs exhibited significantly shorter visuomotor reaction times in two age groups, and demonstrated significantly higher vertical jump heights in the middle-aged group. CONCLUSIONS In women, respiratory patterns were not correlated with physical fitness. The relationship between middle-aged men's I/E ratios and their physical fitness warrants further investigation. Men with lower RRs may have better visual-motor coordination and/or sustained attention, while middle-aged men with lower RRs may also have greater leg explosive power and neuromuscular coordination, which should be considered for physical assessment and health improvement.
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Affiliation(s)
- Wen-Ming Liang
- Department of Physiotherapy and Rehabilitation, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, China
- Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Yu-Xuan Ji
- Department of Physiotherapy and Rehabilitation, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Xiao
- Department of Physiotherapy and Rehabilitation, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, China.
| | | | | | - Zhen-Min Bai
- Department of Sports Rehabilitation, School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China
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10
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Yan M, Hao Q, Diao S, Zhou F, Yichen C, Jiang N, Zhao C, Ren XR, Yu F, Tong J, Wang D, Liu H. Smart Home Sleep Respiratory Monitoring System Based on a Breath-Responsive Covalent Organic Framework. ACS NANO 2024; 18:728-737. [PMID: 38118144 DOI: 10.1021/acsnano.3c09018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
A smart home sleep respiratory monitoring system based on a breath-responsive covalent organic framework (COF) was developed and utilized to monitor the sleep respiratory behavior of real sleep apnea patients in this work. The capacitance of the interdigital electrode chip coated with COFTPDA-TFPy exhibits thousands-level reversible responses to breath humidity gases, with subsecond response time and robustness against environmental humidity. A miniaturized printed circuit board, an open-face-mask-based respiratory sensor, and a smartphone app were constructed for the wearable wireless smart home sleep respiratory monitoring system. Leveraging the sensitive and rapid reversible response of COFs, the COF-based respiratory monitoring system can effectively record normal breath, rapid breath, and breath apnea, enabling over a thousand cycles of hour-level continuous monitoring during daily wear. Next, we took the groundbreaking step of advancing the humidity sensor to the clinical trial stage. In clinical experiments on real sleep apnea patients, the COF-based respiratory monitoring system successfully recorded hour-level sleep respiratory data and differentiated the breathing behavior characteristics and severity of sleep apnea patients and subjects with normal sleep function and primary snoring patients. This work successfully advanced humidity sensors into clinical research for real patients and demonstrated the enormous application potential of COF materials in clinical diagnosis.
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Affiliation(s)
- Mengwen Yan
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Qing Hao
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Shanyan Diao
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Fan Zhou
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Chen Yichen
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Nan Jiang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Chao Zhao
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
| | - Xiao-Rui Ren
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Fuchao Yu
- Department of Cardiology, Zhongda Hospital, Nanjing, China Southeast University, Nanjing, Jiangsu 210096, People's Republic of China
| | - Jiayi Tong
- Department of Cardiology, Zhongda Hospital, Nanjing, China Southeast University, Nanjing, Jiangsu 210096, People's Republic of China
| | - Dong Wang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Hong Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 2# Sipailou, Nanjing, Jiangsu 210096, People's Republic of China
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11
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Zhou Y, Zhang X, Gao Y, Alvi RM, Erqou S, Chen Y, Wang H, Wang W, Li X, Zanni MV, Neilan TG, Vermund SH, Qian HZ, Qian F. Risk of death and readmission among individuals with heart failure and HIV: A systematic review and meta-analysis. J Infect Public Health 2024; 17:70-75. [PMID: 37992436 DOI: 10.1016/j.jiph.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/10/2023] [Accepted: 11/02/2023] [Indexed: 11/24/2023] Open
Abstract
The association between human immunodeficiency virus (HIV) status and readmissions and death outcomes in patients with established heart failure (HF) remains unclear. We conducted a systematic search of PubMed, EMBASE, Cochrane Library, and Web of Science up to March 1st, 2023, for cohort studies of adult patients (≥18 years) diagnosed with HF and recorded HIV status at baseline. Our analysis included 7 studies with 10,328 HF patients living with HIV and 48,757 HF patients without HIV. Compared to HF patients without HIV, those with HIV had a higher risk of all-cause deaths (HR: 1.20, 95% CI: 1.15-1.25). HIV infection was also associated with increased risks of HF-associated readmission (HR: 1.34, 95% CI: 1.03-1.75) and all-cause readmission (HR: 1.27, 95% CI: 1.10-1.46). Our study highlights the independent association between HIV and poor HF outcomes, emphasizing the need for improved management in individuals living with HIV.
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Affiliation(s)
- Yaqin Zhou
- Xiangya Nursing School, Central South University, Changsha, China.
| | | | - Yanxiao Gao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
| | - Raza M Alvi
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Sebhat Erqou
- Department of Medicine, Alpert Medical School of Brown University, Providence, RI, USA.
| | - Yuqing Chen
- Xiangya Nursing School, Central South University, Changsha, China.
| | - Honghong Wang
- Xiangya Nursing School, Central South University, Changsha, China.
| | - Wenru Wang
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Xianhong Li
- Xiangya Nursing School, Central South University, Changsha, China; School of International Education, Hainan Medical College, Haikou, China.
| | - Markella V Zanni
- Metabolism Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Tomas G Neilan
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Sten H Vermund
- School of Public Health, Yale University, New Haven, CT, USA.
| | - Han-Zhu Qian
- School of Public Health, Yale University, New Haven, CT, USA.
| | - Frank Qian
- Section of Cardiovascular Medicine, Boston Medical Center and Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
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12
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Whitehead JF, Periyasamy S, Laeseke PF, Speidel MA, Wagner MG. Motion-compensation approach for quantitative digital subtraction angiography and its effect on in-vivo blood velocity measurement. J Med Imaging (Bellingham) 2024; 11:013501. [PMID: 38188936 PMCID: PMC10765039 DOI: 10.1117/1.jmi.11.1.013501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/13/2023] [Accepted: 12/18/2023] [Indexed: 01/09/2024] Open
Abstract
Purpose Quantitative monitoring of flow-altering interventions has been proposed using algorithms that quantify blood velocity from time-resolved two-dimensional angiograms. These algorithms track the movement of contrast oscillations along a vessel centerline. Vessel motion may occur relative to a statically defined vessel centerline, corrupting the blood velocity measurement. We provide a method for motion-compensated blood velocity quantification. Approach The motion-compensation approach utilizes a vessel segmentation algorithm to perform frame-by-frame vessel registration and creates a dynamic vessel centerline that moves with the vasculature. Performance was evaluated in-vivo through comparison with manually annotated centerlines. The method was also compared to a previous uncompensated method using best- and worst-case static centerlines chosen to minimize and maximize centerline placement accuracy. Blood velocities determined through quantitative DSA (qDSA) analysis for each centerline type were compared through linear regression analysis. Results Centerline distance errors were 0.3 ± 0.1 mm relative to gold standard manual annotations. For the uncompensated approach, the best- and worst-case static centerlines had distance errors of 1.1 ± 0.6 and 2.9 ± 1.2 mm , respectively. Linear regression analysis found a high R -squared between qDSA-derived blood velocities using gold standard centerlines and motion-compensated centerlines (R 2 = 0.97 ) with a slope of 1.15 and a small offset of - 0.6 cm / s . The use of static centerlines resulted in low coefficients of determination for the best case (R 2 = 0.35 ) and worst-case (R 2 = 0.20 ) scenarios, with slopes close to zero. Conclusions In-vivo validation of motion-compensated qDSA analysis demonstrated improved velocity quantification accuracy in vessels with motion, addressing an important clinical limitation of the current qDSA algorithm.
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Affiliation(s)
- Joseph F. Whitehead
- University of Wisconsin – Madison, Department of Medical Physics, Madison, Wisconsin, United States
| | - Sarvesh Periyasamy
- University of Wisconsin – Madison, Department of Radiology, Madison, Wisconsin, United States
| | - Paul F. Laeseke
- University of Wisconsin – Madison, Department of Radiology, Madison, Wisconsin, United States
| | - Michael A. Speidel
- University of Wisconsin – Madison, Department of Medical Physics, Madison, Wisconsin, United States
- University of Wisconsin – Madison, Department of Medicine, Madison, Wisconsin, United States
| | - Martin G. Wagner
- University of Wisconsin – Madison, Department of Medical Physics, Madison, Wisconsin, United States
- University of Wisconsin – Madison, Department of Radiology, Madison, Wisconsin, United States
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13
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Damam S, Meshram RJ, Taksande A, Lohiya S, Khurana A, Patel A, Khandelwal R, Nath R, Javvaji CK, Kakkat S. Navigating Pediatric Capnography: A Comprehensive Review of Scope and Limitations. Cureus 2024; 16:e53289. [PMID: 38435961 PMCID: PMC10905056 DOI: 10.7759/cureus.53289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 01/31/2024] [Indexed: 03/05/2024] Open
Abstract
This review comprehensively explores pediatric capnography, a vital tool in contemporary respiratory monitoring. The overview encompasses the foundational principles of capnography, elucidating its real-time measurement of carbon dioxide (CO2) in respiratory gases. The review emphasizes its paramount role in pediatric care and underscores capnography's significance in detecting respiratory abnormalities and guiding timely interventions. The distinctions between mainstream and sidestream capnography, the key to understanding their applications, are meticulously outlined. Addressing the importance of ongoing research and education, the review advocates for a dynamic approach to refine guidelines and optimize capnography utilization in pediatric settings. The conclusion reflects on the scope and limitations of pediatric capnography, acknowledging its transformative impact while advocating for a judicious recognition of constraints. As we navigate the future of pediatric respiratory care, the synergy of research, education, and clinical application emerges as the cornerstone for advancing pediatric capnography to new horizons.
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Affiliation(s)
- SreeHarsha Damam
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Revat J Meshram
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amar Taksande
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sham Lohiya
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Astha Khurana
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Ankita Patel
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Rahul Khandelwal
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Ritwik Nath
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Chaitanya Kumar Javvaji
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Shikha Kakkat
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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14
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Sbrollini A, Morettini M, Gambi E, Burattini L. Identification of Respiration Types Through Respiratory Signal Derived From Clinical and Wearable Electrocardiograms. IEEE OPEN JOURNAL OF ENGINEERING IN MEDICINE AND BIOLOGY 2023; 4:268-274. [PMID: 38196981 PMCID: PMC10776097 DOI: 10.1109/ojemb.2023.3343557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/30/2023] [Accepted: 12/08/2023] [Indexed: 01/11/2024] Open
Abstract
GOAL To evaluate suitability of respiratory signals derived from clinical 12-lead electrocardiograms (ECGs) and wearable 1-lead ECG to identify different respiration types. METHODS ECGs were simultaneously acquired through the M12R ECG Holter by Global Instrumentation and the chest strap BioHarness 3.0 by Zephyr from 42 healthy subjects alternating normal breathing, breath holding, and deep breathing. Respiration signals were derived from the ECGs through the Segmented-Beat Modulation Method (SBMM)-based algorithm and the algorithms by Van Gent, Charlton, Soni and Sarkar, and characterized in terms of breathing rate and amplitude. Respiration classification was performed through a linear support vector machine and evaluated by F1 score. RESULTS Best F1 scores were 86.59%(lead V2) and 80.57%, when considering 12-lead and 1-lead ECGs, respectively, and using SBMM-based algorithm. CONCLUSION ECG-derived respiratory signals allow reliable identification of different respiration types even when acquired through wearable sensors, if associated to appropriate processing algorithms, such as the SBMM-based algorithm.
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Affiliation(s)
- Agnese Sbrollini
- Department of Information EngineeringUniversità Politecnica delle Marche60121AnconaItaly
| | - Micaela Morettini
- Department of Information EngineeringUniversità Politecnica delle Marche60121AnconaItaly
| | - Ennio Gambi
- Department of Information EngineeringUniversità Politecnica delle Marche60121AnconaItaly
| | - Laura Burattini
- Department of Information EngineeringUniversità Politecnica delle Marche60121AnconaItaly
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15
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Pulcinelli M, Pinnelli M, Massaroni C, Lo Presti D, Fortino G, Schena E. Wearable Systems for Unveiling Collective Intelligence in Clinical Settings. SENSORS (BASEL, SWITZERLAND) 2023; 23:9777. [PMID: 38139623 PMCID: PMC10747409 DOI: 10.3390/s23249777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/29/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
Nowadays, there is an ever-growing interest in assessing the collective intelligence (CI) of a team in a wide range of scenarios, thanks to its potential in enhancing teamwork and group performance. Recently, special attention has been devoted on the clinical setting, where breakdowns in teamwork, leadership, and communication can lead to adverse events, compromising patient safety. So far, researchers have mostly relied on surveys to study human behavior and group dynamics; however, this method is ineffective. In contrast, a promising solution to monitor behavioral and individual features that are reflective of CI is represented by wearable technologies. To date, the field of CI assessment still appears unstructured; therefore, the aim of this narrative review is to provide a detailed overview of the main group and individual parameters that can be monitored to evaluate CI in clinical settings, together with the wearables either already used to assess them or that have the potential to be applied in this scenario. The working principles, advantages, and disadvantages of each device are introduced in order to try to bring order in this field and provide a guide for future CI investigations in medical contexts.
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Affiliation(s)
- Martina Pulcinelli
- Research Unit of Measurements and Biomedical Instrumentation, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Roma, Italy; (M.P.); (M.P.); (C.M.); (E.S.)
| | - Mariangela Pinnelli
- Research Unit of Measurements and Biomedical Instrumentation, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Roma, Italy; (M.P.); (M.P.); (C.M.); (E.S.)
| | - Carlo Massaroni
- Research Unit of Measurements and Biomedical Instrumentation, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Roma, Italy; (M.P.); (M.P.); (C.M.); (E.S.)
- Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128 Roma, Italy
| | - Daniela Lo Presti
- Research Unit of Measurements and Biomedical Instrumentation, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Roma, Italy; (M.P.); (M.P.); (C.M.); (E.S.)
- Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128 Roma, Italy
| | - Giancarlo Fortino
- DIMES, University of Calabria, Via P. Bucci 41C, 87036 Rende, Italy;
| | - Emiliano Schena
- Research Unit of Measurements and Biomedical Instrumentation, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Roma, Italy; (M.P.); (M.P.); (C.M.); (E.S.)
- Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128 Roma, Italy
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16
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Nicolò A, Gruet M, Sacchetti M. Editorial: Breathing in sport and exercise: physiology, pathophysiology and applications. Front Physiol 2023; 14:1347806. [PMID: 38192742 PMCID: PMC10773579 DOI: 10.3389/fphys.2023.1347806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 01/10/2024] Open
Affiliation(s)
- Andrea Nicolò
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | | | - Massimo Sacchetti
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
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17
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Shamantseva ND, Klishkovskaia TA, Ananyev SS, Aksenov AY, Moshonkina TR. Efficacy of Marker-Based Motion Capture for Respiratory Cycle Measurement: A Comparison with Spirometry. SENSORS (BASEL, SWITZERLAND) 2023; 23:9736. [PMID: 38139582 PMCID: PMC10748239 DOI: 10.3390/s23249736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
Respiratory rate monitoring is fundamental in clinical settings, and the accuracy of measurement methods is critical. This study aimed to develop and validate methods for assessing respiratory rate and the duration leof respiratory cycle phases in different body positions using optoelectronic plethysmography (OEP) based on a motion capture video system. Two analysis methods, the summation method and the triangle method were developed. The study focused on determining the optimal number of markers while achieving accuracy in respiratory parameter measurements. The results showed that most analysis methods showed a difference of ≤0.5 breaths per minute, with R2 ≥ 0.94 (p < 0.001) compared to spirometry. The best OEP methods for respiratory rate were the abdominal triangles and the sum of abdominal markers in all body positions. The study explored inspiratory and expiratory durations. The research found that 5-9 markers were sufficient to accurately determine respiratory time components in all body positions, reducing the marker requirements compared to previous studies. This interchangeability of OEP methods with standard spirometry demonstrates the potential of non-invasive methods for the simultaneous assessment of body segment movements, center of pressure dynamics, and respiratory movements. Future research is required to improve the clinical applicability of these methods.
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Affiliation(s)
- Natalia D. Shamantseva
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova Emb., Saint Petersburg 199034, Russia; (S.S.A.); (T.R.M.)
| | - Tatiana A. Klishkovskaia
- Faculty of Information Measurement and Biotechnical Systems, Saint Petersburg Electrotechnical University “LETI”, 5 Professora Popova Str., Saint Petersburg 197022, Russia; (T.A.K.); (A.Y.A.)
| | - Sergey S. Ananyev
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova Emb., Saint Petersburg 199034, Russia; (S.S.A.); (T.R.M.)
| | - Andrey Y. Aksenov
- Faculty of Information Measurement and Biotechnical Systems, Saint Petersburg Electrotechnical University “LETI”, 5 Professora Popova Str., Saint Petersburg 197022, Russia; (T.A.K.); (A.Y.A.)
| | - Tatiana R. Moshonkina
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova Emb., Saint Petersburg 199034, Russia; (S.S.A.); (T.R.M.)
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18
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Warnecke JM, Lasenby J, Deserno TM. Robust in-vehicle respiratory rate detection using multimodal signal fusion. Sci Rep 2023; 13:20435. [PMID: 37993552 PMCID: PMC10665475 DOI: 10.1038/s41598-023-47504-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023] Open
Abstract
Continuous health monitoring in private spaces such as the car is not yet fully exploited to detect diseases in an early stage. Therefore, we develop a redundant health monitoring sensor system and signal fusion approaches to determine the respiratory rate during driving. To recognise the breathing movements, we use a piezoelectric sensor, two accelerometers attached to the seat and the seat belt, and a camera behind the windscreen. We record data from 15 subjects during three driving scenarios (15 min each) city, highway, and countryside. An additional chest belt provides the ground truth. We compare the four convolutional neural network (CNN)-based fusion approaches: early, sensor-based late, signal-based late, and hybrid fusion. We evaluate the performance of fusing for all four signals to determine the portion of driving time and the signal combination. The hybrid algorithm fusing all four signals is most effective in detecting respiratory rates in the city ([Formula: see text]), highway ([Formula: see text]), and countryside ([Formula: see text]). In summary, 60% of the total driving time can be used to measure the respiratory rate. The number of signals used in the multi-signal fusion improves reliability and enables continuous health monitoring in a driving vehicle.
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Affiliation(s)
- Joana M Warnecke
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, 38106, Braunschweig, Germany.
- Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK.
| | - Joan Lasenby
- Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK
| | - Thomas M Deserno
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, 38106, Braunschweig, Germany
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19
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Romanchuk O. Cardiorespiratory dynamics during respiratory maneuver in athletes. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3. [DOI: https:/doi.org/10.3389/fnetp.2023.1276899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Introduction: The modern practice of sports medicine and medical rehabilitation requires the search for subtle criteria for the development of conditions and recovery of the body after diseases, which would have a prognostic value for the prevention of negative effects of training and rehabilitation tools, and also testify to the development and course of mechanisms for counteracting pathogenetic processes in the body. The purpose of this study was to determine the informative directions of the cardiorespiratory system parameters dynamics during the performing a maneuver with a change in breathing rate, which may indicate the body functional state violation.Methods: The results of the study of 183 healthy men aged 21.2 ± 2.3 years who regularly engaged in various sports were analyzed. The procedure for studying the cardiorespiratory system included conducting combined measurements of indicators of activity of the respiratory and cardiovascular systems in a sitting position using a spiroarteriocardiograph device. The duration of the study was 6 min and involved the sequential registration of three measurements with a change in breathing rate (spontaneous breathing, breathing at 0.1 Hz and 0.25 Hz).Results: Performing a breathing maneuver at breathing 0.1 Hz and breathing 0.25 Hz in comparison with spontaneous breathing leads to multidirectional significant changes in heart rate variability indicators–TP (ms2), LF (ms2), LFHF (ms2/ms2); of blood pressure variability indicators–TPDBP (mmHg2), LFSBP (mmHg2), LFDBP (mmHg2), HFSBP (mmHg2); of volume respiration variability indicators - LFR, (L×min-1)2; HFR, (L×min-1)2; LFHFR, (L×min-1)2/(L×min-1)2; of arterial baroreflex sensitivity indicators - BRLF (ms×mmHg-1), BRHF (ms×mmHg-1). Differences in indicators of systemic hemodynamics and indicators of cardiovascular and respiratory systems synchronization were also informative.Conclusion: According to the results of the study, it is shown that during performing a breathing maneuver with a change in the rate of breathing, there are significant changes in cardiorespiratory parameters, the analysis of which the increments made it possible to determine of the changes directions dynamics, their absolute values and informative limits regarding the possible occurrence of the cardiorespiratory interactions dysregulation.
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20
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Romanchuk O. Cardiorespiratory dynamics during respiratory maneuver in athletes. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3:1276899. [PMID: 38020241 PMCID: PMC10643240 DOI: 10.3389/fnetp.2023.1276899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023]
Abstract
Introduction: The modern practice of sports medicine and medical rehabilitation requires the search for subtle criteria for the development of conditions and recovery of the body after diseases, which would have a prognostic value for the prevention of negative effects of training and rehabilitation tools, and also testify to the development and course of mechanisms for counteracting pathogenetic processes in the body. The purpose of this study was to determine the informative directions of the cardiorespiratory system parameters dynamics during the performing a maneuver with a change in breathing rate, which may indicate the body functional state violation. Methods: The results of the study of 183 healthy men aged 21.2 ± 2.3 years who regularly engaged in various sports were analyzed. The procedure for studying the cardiorespiratory system included conducting combined measurements of indicators of activity of the respiratory and cardiovascular systems in a sitting position using a spiroarteriocardiograph device. The duration of the study was 6 min and involved the sequential registration of three measurements with a change in breathing rate (spontaneous breathing, breathing at 0.1 Hz and 0.25 Hz). Results: Performing a breathing maneuver at breathing 0.1 Hz and breathing 0.25 Hz in comparison with spontaneous breathing leads to multidirectional significant changes in heart rate variability indicators-TP (ms2), LF (ms2), LFHF (ms2/ms2); of blood pressure variability indicators-TPDBP (mmHg2), LFSBP (mmHg2), LFDBP (mmHg2), HFSBP (mmHg2); of volume respiration variability indicators - LFR, (L×min-1)2; HFR, (L×min-1)2; LFHFR, (L×min-1)2/(L×min-1)2; of arterial baroreflex sensitivity indicators - BRLF (ms×mmHg-1), BRHF (ms×mmHg-1). Differences in indicators of systemic hemodynamics and indicators of cardiovascular and respiratory systems synchronization were also informative. Conclusion: According to the results of the study, it is shown that during performing a breathing maneuver with a change in the rate of breathing, there are significant changes in cardiorespiratory parameters, the analysis of which the increments made it possible to determine of the changes directions dynamics, their absolute values and informative limits regarding the possible occurrence of the cardiorespiratory interactions dysregulation.
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Affiliation(s)
- Oleksandr Romanchuk
- Department of Medical Rehabilitation, Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine, Odesa, Ukraine
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21
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Vaussenat F, Bhattacharya A, Payette J, Benavides-Guerrero JA, Perrotton A, Gerlein LF, Cloutier SG. Continuous Critical Respiratory Parameter Measurements Using a Single Low-Cost Relative Humidity Sensor: Evaluation Study. JMIR BIOMEDICAL ENGINEERING 2023; 8:e47146. [PMID: 38875670 PMCID: PMC11041423 DOI: 10.2196/47146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/22/2023] [Accepted: 09/07/2023] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND Accurate and portable respiratory parameter measurements are critical for properly managing chronic obstructive pulmonary diseases (COPDs) such as asthma or sleep apnea, as well as controlling ventilation for patients in intensive care units, during surgical procedures, or when using a positive airway pressure device for sleep apnea. OBJECTIVE The purpose of this research is to develop a new nonprescription portable measurement device that utilizes relative humidity sensors (RHS) to accurately measure key respiratory parameters at a cost that is approximately 10 times less than the industry standard. METHODS We present the development, implementation, and assessment of a wearable respiratory measurement device using the commercial Bosch BME280 RHS. In the initial stage, the RHS was connected to the pneumotach (PNT) gold standard device via its external connector to gather breathing metrics. Data collection was facilitated using the Arduino platform with a Bluetooth Low Energy connection, and all measurements were taken in real time without any additional data processing. The device's efficacy was tested with 7 participants (5 men and 2 women), all in good health. In the subsequent phase, we specifically focused on comparing breathing cycle and respiratory rate measurements and determining the tidal volume by calculating the region between inhalation and exhalation peaks. Each participant's data were recorded over a span of 15 minutes. After the experiment, detailed statistical analysis was conducted using ANOVA and Bland-Altman to examine the accuracy and efficiency of our wearable device compared with the traditional methods. RESULTS The perfused air measured with the respiratory monitor enables clinicians to evaluate the absolute value of the tidal volume during ventilation of a patient. In contrast, directly connecting our RHS device to the surgical mask facilitates continuous lung volume monitoring. The results of the 1-way ANOVA showed high P values of .68 for respiratory volume and .89 for respiratory rate, which indicate that the group averages with the PNT standard are equivalent to those with our RHS platform, within the error margins of a typical instrument. Furthermore, analysis utilizing the Bland-Altman statistical method revealed a small bias of 0.03 with limits of agreement (LoAs) of -0.25 and 0.33. The RR bias was 0.018, and the LoAs were -1.89 and 1.89. CONCLUSIONS Based on the encouraging results, we conclude that our proposed design can be a viable, low-cost wearable medical device for pulmonary parametric measurement to prevent and predict the progression of pulmonary diseases. We believe that this will encourage the research community to investigate the application of RHS for monitoring the pulmonary health of individuals.
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Affiliation(s)
- Fabrice Vaussenat
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | - Abhiroop Bhattacharya
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | - Julie Payette
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | | | - Alexandre Perrotton
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | - Luis Felipe Gerlein
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | - Sylvain G Cloutier
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, Canada
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22
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Kumari P, Kumar A, Yadav A, Gupta G, Gupta G, Shivagan DD, Bapna K. Chitosan-Based Highly Sensitive Viable Humidity Sensor for Human Health Monitoring. ACS OMEGA 2023; 8:39511-39522. [PMID: 37901485 PMCID: PMC10601044 DOI: 10.1021/acsomega.3c05244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023]
Abstract
We report a sustainable resistive-type humidity sensor based on chitosan (CS) film deposited on an interdigitated Ti/Au electrode coated SiO2 substrate using a simple drop cast approach for human health monitoring. The sensor revealed remarkably high sensitivity (5.8 MΩ/%RH), fast response/recovery time (21 s/25 s), low hysteresis (∼9.3%), excellent reversibility, wide detecting range (11-95% RH), and high selectivity toward water vapor. The calculated associated uncertainty at different %RH indicates the excellent repeatability and stable performance of the sensor. The developed sensor is tested for different human breath patterns, and it is found that the sensor can clearly distinguish between the variations in rate and depth of respiration patterns during normal, fast, deep, and nasal breathing and can monitor for apnea-like situations. The sensor is also utilized to perform noncontact skin humidity sensing. Overall, the developed CS film humidity sensor provides a viable approach for the detection of respiratory disorders and human health issues, detected by skin moisture, in a noninvasive manner.
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Affiliation(s)
- Parvesh Kumari
- Temperature
and Humidity Metrology, CSIR- National Physical
Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ankit Kumar
- Temperature
and Humidity Metrology, CSIR- National Physical
Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Aditya Yadav
- Sensor
Devices and Metrology, CSIR- National Physical
Laboratory, Dr. K. S.
Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Govind Gupta
- Sensor
Devices and Metrology, CSIR- National Physical
Laboratory, Dr. K. S.
Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Gaurav Gupta
- Temperature
and Humidity Metrology, CSIR- National Physical
Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Dilip D. Shivagan
- Temperature
and Humidity Metrology, CSIR- National Physical
Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Komal Bapna
- Temperature
and Humidity Metrology, CSIR- National Physical
Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
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23
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Lo Mauro A, Tringali G, Codecasa F, Abbruzzese L, Sartorio A, Aliverti A. Pulmonary and chest wall function in obese adults. Sci Rep 2023; 13:17753. [PMID: 37852999 PMCID: PMC10585005 DOI: 10.1038/s41598-023-44222-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
Obesity is frequently associated with breathing disorders. To investigate if and how the highest levels of obesity impact respiratory function, 17 subjects with obesity (median age: 49 years; BMI: 39.7 kg/m2, 8 females) and 10 normal-weighted subjects (49 years; 23.9 kg/m2, 5 females) were studied. The abdominal volume occupied 41% in the obese group, being higher (p < 0.001) than the normal-weighted group (31%), indicating accumulation of abdominal fat. Restrictive lung defect was present in 17% of subjects with obesity. At rest in the supine position, subjects with obesity breathed with higher minute ventilation (11.9 L/min) and lower ribcage contribution (5.7%) than normal weighted subjects (7.5 L/min, p = 0.001 and 31.1%, p = 0.003, respectively), thus indicating thoracic restriction. Otherwise healthy obesity might not be characterized by a systematic restrictive lung pattern. Despite this, another sign of restriction could be poor thoracic expansion at rest in the supine position, resulting in increased ventilation. Class 3 obesity made respiratory rate further increased. Opto-electronic plethysmography and its thoraco-abdominal analysis of awake breathing add viable and interesting information in subjects with obesity that were complementary to pulmonary function tests. In addition, OEP is able to localize the restrictive effect of obesity.
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Affiliation(s)
- Antonella Lo Mauro
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Piazza L. Da Vinci, 20133, Milan, Italy.
| | - Gabriella Tringali
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Franco Codecasa
- Division of Pneumological Rehabilitation, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Laura Abbruzzese
- Division of Eating and Nutrition Disorders, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Alessandro Sartorio
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Andrea Aliverti
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Piazza L. Da Vinci, 20133, Milan, Italy
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24
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Duan X, Song X, Yang C, Li Y, Wei L, Gong Y, Li Y. Evaluation of three approaches used for respiratory measurement in healthy subjects. Physiol Meas 2023; 44:105004. [PMID: 37729923 DOI: 10.1088/1361-6579/acfbd7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/20/2023] [Indexed: 09/22/2023]
Abstract
Objective. Respiration is one of the critical vital signs of human health status, and accurate respiratory monitoring has important clinical significance. There is substantial evidence that alterations in key respiratory parameters can be used to determine a patient's health status, aid in the selection of appropriate treatments, predict potentially serious clinical events and control respiratory activity. Although various approaches have been developed for respiration monitoring, no definitive conclusions have been drawn regarding the accuracy of these approaches because each has different advantages and limitations. In the present study, we evaluated the performance of three non-invasive respiratory measurement approaches, including transthoracic impedance (IMP), surface diaphragm electromyography-derived respiration (EMGDR) and electrocardiogram-derived respiration (ECGDR), and compared them with the direct measurement of airflow (FLW) in 33 male and 38 female healthy subjects in the resting state.Approach. The accuracy of six key respiratory parameters, including onset of inspiration (Ion), onset of expiration (Eon), inspiratory time (It), expiratory time (Et), respiratory rate (RR) and inspiratory-expiratory ratio (I:E), measured from the IMP, EMGDR and ECGDR, were compared with those annotated from the reference FLW.Main results. The correlation coefficients between the estimated inspiratory volume and reference value were 0.72 ± 0.20 for IMP, 0.62 ± 0.23 for EMGDR and 0.46 ± 0.21 for ECGDR (p< 0.01 among groups). The positive predictive value and sensitivity for respiration detection were 100% and 100%, respectively, for IMP, which were significantly higher than those of the EMGDR (97.2% and 95.5%,p< 0.001) and the ECGDR (96.9% and 90.0%,p< 0.001). Additionally, the mean error (ME) forIon,Eon,It,EtandRRdetection were markedly lower for IMP than for EMGDR and ECGDR (p< 0.001).Significance. Compared with EMGDR and ECGDR, the IMP signal had a higher positive predictive value, higher sensitivity and lower ME for respiratory parameter detection. This suggests that IMP is more suitable for dedicated respiratory monitoring and parameter evaluation.
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Affiliation(s)
- Xiaojuan Duan
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Xin Song
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Caidie Yang
- Department of Respiratory Medicine, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Yunchi Li
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Liang Wei
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Yushun Gong
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Yongqin Li
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing, People's Republic of China
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25
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Zhang C, Wu M, Cao S, Liu M, Guo D, Kang Z, Li M, Ye D, Yang Z, Wang X, Xie Z, Liu J. Bioinspired Environment-Adaptable and Ultrasensitive Multifunctional Electronic Skin for Human Healthcare and Robotic Sensations. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304004. [PMID: 37300351 DOI: 10.1002/smll.202304004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Indexed: 06/12/2023]
Abstract
Multifunctional electronic skins (e-skins) that can sense various stimuli have demonstrated increasing potential in many fields. However, most e-skins are human-oriented that cannot work in hash environments such as high temperature, underwater, and corrosive chemicals, impairing their applications, especially in human-machine interfaces, intelligent machines, robotics, and so on. Inspired by the crack-shaped sensory organs of spiders, an environmentally robust and ultrasensitive multifunctional e-skin is developed. By developing a polyimide-based metal crack-localization strategy, the device has excellent environment adaptability since polyimide has high thermal stability and chemical durability. The localized cracked part serves as an ultrasensitive strain sensing unit, while the non-cracked serpentine part is solely responsible for temperature. Since the two units are made of the same material and process, the signals are decoupled easily. The proposed device is the first multifunctional e-skin that can be used in harsh environments, therefore is of great potential for both human and robot-oriented applications.
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Affiliation(s)
- Chi Zhang
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Mengxi Wu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Shuye Cao
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Mengjing Liu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Di Guo
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, 116024, China
| | - Zhan Kang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, 116024, China
| | - Ming Li
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, 116024, China
| | - Dong Ye
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhuoqing Yang
- National Key Laboratory of Science and Technology on Micro and Nano Fabrication, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xuewen Wang
- Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Zhaoqian Xie
- Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China
| | - Junshan Liu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China
- Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, Liaoning, 116024, China
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26
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Szankin M, Kwasniewska A, Ruminski J. Thermal Image Processing for Respiratory Estimation from Cubical Data with Expandable Depth. J Imaging 2023; 9:184. [PMID: 37754948 PMCID: PMC10532126 DOI: 10.3390/jimaging9090184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/24/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
As healthcare costs continue to rise, finding affordable and non-invasive ways to monitor vital signs is increasingly important. One of the key metrics for assessing overall health and identifying potential issues early on is respiratory rate (RR). Most of the existing methods require multiple steps that consist of image and signal processing. This might be difficult to deploy on edge devices that often do not have specialized digital signal processors (DSP). Therefore, the goal of this study is to develop a single neural network realizing the entire process of RR estimation in a single forward pass. The proposed solution builds on recent advances in video recognition, capturing both spatial and temporal information in a multi-path network. Both paths process the data at different sampling rates to capture rapid and slow changes that are associated with differences in the temperature of the nostril area during the breathing episodes. The preliminary results show that the introduced end-to-end solution achieves better performance compared to state-of-the-art methods, without requiring additional pre/post-processing steps and signal-processing techniques. In addition, the presented results demonstrate its robustness on low-resolution thermal video sequences that are often used at the embedded edge due to the size and power constraints of such systems. Taking that into account, the proposed approach has the potential for efficient and convenient respiratory rate estimation across various markets in solutions deployed locally, close to end users.
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Affiliation(s)
- Maciej Szankin
- Intel Corporation, 16409 W Bernardo Dr Suite 100, San Diego, CA 92127, USA
| | | | - Jacek Ruminski
- Department of Biomedical Engineering, Gdansk University of Technology, Gabriela Narutowicza 11/12, 80233 Gdansk, Poland;
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27
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Molinaro N, Schena E, Silvestri S, Massaroni C. Breathing Chest Wall Kinematics Assessment through a Single Digital Camera: A Feasibility Study. SENSORS (BASEL, SWITZERLAND) 2023; 23:6960. [PMID: 37571742 PMCID: PMC10422340 DOI: 10.3390/s23156960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023]
Abstract
The identification of respiratory patterns based on the movement of the chest wall can assist in monitoring an individual's health status, particularly those with neuromuscular disorders, such as hemiplegia and Duchenne muscular dystrophy. Thoraco-abdominal asynchrony (TAA) refers to the lack of coordination between the rib cage and abdominal movements, characterized by a time delay in their expansion. Motion capture systems, like optoelectronic plethysmography (OEP), are commonly employed to assess these asynchronous movements. However, alternative technologies able to capture chest wall movements without physical contact, such as RGB digital cameras and time-of-flight digital cameras, can also be utilized due to their accessibility, affordability, and non-invasive nature. This study explores the possibility of using a single RGB digital camera to record the kinematics of the thoracic and abdominal regions by placing four non-reflective markers on the torso. In order to choose the positions of these markers, we previously investigated the movements of 89 chest wall landmarks using OEP. Laboratory tests and volunteer experiments were conducted to assess the viability of the proposed system in capturing the kinematics of the chest wall and estimating various time-related respiratory parameters (i.e., fR, Ti, Te, and Ttot) as well as TAA indexes. The results demonstrate a high level of agreement between the detected chest wall kinematics and the reference data. Furthermore, the system shows promising potential in estimating time-related respiratory parameters and identifying phase shifts indicative of TAA, thus suggesting its feasibility in detecting abnormal chest wall movements without physical contact with a single RGB camera.
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Affiliation(s)
| | | | - Sergio Silvestri
- Unit of Measurements and Biomedical Instrumentation, Università Campus Bio-Medico di Roma, 00128 Rome, Italy; (N.M.); (E.S.); (C.M.)
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28
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Nicolò A, Girardi M, Bazzucchi I, Sacchetti M, Felici F. Ventilation and perceived exertion are sensitive to changes in exercise tolerance: arm+leg cycling vs. leg cycling. Front Physiol 2023; 14:1226421. [PMID: 37593234 PMCID: PMC10427861 DOI: 10.3389/fphys.2023.1226421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 07/20/2023] [Indexed: 08/19/2023] Open
Abstract
Purpose: Growing evidence suggests that respiratory frequency (f R) is a marker of physical effort and a variable sensitive to changes in exercise tolerance. The comparison between arm+leg cycling (Arm+leg) and leg cycling (Leg) has the potential to further test this notion because a greater exercise tolerance is expected in the Arm+leg modality. We systematically compared Arm+leg vs. Leg using different performance tests. Methods: Twelve males underwent six performance tests in separate, randomized visits. Three tests were performed in each of the two exercise modalities, i.e. an incremental test and two time-to-exhaustion (TTE) tests performed at 90% or 75% of the peak power output reached in the Leg incremental test (PPOLeg). Exercise tolerance, perceived exertion, and cardiorespiratory variables were recorded during all the tests. Results: A greater exercise tolerance (p < 0.001) was found for Arm+leg in the incremental test (337 ± 32 W vs. 292 ± 28 W), in the TTE test at 90% of PPOLeg (638 ± 154 s vs. 307 ± 67 s), and in the TTE test at 75% of PPOLeg (1,675 ± 525 s vs. 880 ± 363 s). Unlike V ˙ O2 and heart rate, both f R and minute ventilation were lower (p < 0.003) at isotime in all the Arm+leg tests vs. Leg tests. Furthermore, a lower perceived exertion was observed in the Arm+leg tests, especially during the TTE tests (p < 0.001). Conclusion: Minute ventilation, f R and perceived exertion are sensitive to the improvements in exercise tolerance observed when comparing Arm+leg vs. Leg, unlike V ˙ O2 and heart rate.
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Affiliation(s)
- Andrea Nicolò
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Michele Girardi
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
- Division of Respiratory and Critical Care Physiology and Medicine, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Institute of Respiratory Medicine and Exercise Physiology, Torrance, CA, United States
| | - Ilenia Bazzucchi
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Massimo Sacchetti
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Francesco Felici
- Laboratory of Exercise Physiology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
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29
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Moon KS, Lee SQ. A Wearable Multimodal Wireless Sensing System for Respiratory Monitoring and Analysis. SENSORS (BASEL, SWITZERLAND) 2023; 23:6790. [PMID: 37571572 PMCID: PMC10422350 DOI: 10.3390/s23156790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/15/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023]
Abstract
Wireless sensing systems are required for continuous health monitoring and data collection. It allows for patient data collection in real time rather than through time-consuming and expensive hospital or lab visits. This technology employs wearable sensors, signal processing, and wireless data transfer to remotely monitor patients' health. The research offers a novel approach to providing primary diagnostics remotely with a digital health system for monitoring pulmonary health status using a multimodal wireless sensor device. The technology uses a compact wearable with new integration of acoustics and biopotentials sensors to monitor cardiovascular and respiratory activity to provide comprehensive and fast health status monitoring. Furthermore, the small wearable sensor size may stick to human skin and record heart and lung activities to monitor respiratory health. This paper proposes a sensor data fusion method of lung sounds and cardiograms for potential real-time respiration pattern diagnostics, including respiratory episodes like low tidal volume and coughing. With a p-value of 0.003 for sound signals and 0.004 for electrocardiogram (ECG), preliminary tests demonstrated that it was possible to detect shallow breathing and coughing at a meaningful level.
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Affiliation(s)
- Kee S. Moon
- Department of Mechanical Engineering, San Diego State University, San Diego, CA 92182, USA
| | - Sung Q Lee
- Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea
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30
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Radomski A, Teichmann D. Eliminating the Trade-off Between Resolution and Sampling Rate in Magnetic Induction Based Cardiorespiratory Sensors. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-4. [PMID: 38082734 DOI: 10.1109/embc40787.2023.10340789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
This paper proposes a novel algorithm that allows a significant improvement of the resolution of frequency modulated magnetic induction sensors while providing high sampling rates. We have implemented this approach in a frequency modulated magnetic induction sensor and our first measurements demonstrate the improvement of the sensor's signal quality.
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31
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Jin Y, Rahman MM, Ahmed T, Kuang J, Gao AJ. RRDetection: Respiration Rate Estimation Using Earbuds During Physical Activities. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-5. [PMID: 38083350 DOI: 10.1109/embc40787.2023.10340157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
In modern times, earbuds have become both popular and essential accessories for people to use with a wide range of devices in their everyday lives. Moreover, the respiration rate is a crucial vital sign that is sensitive to various pathological conditions. Many earbuds now come equipped with multiple sensing capabilities, including inertial and acoustic sensors. These sensors can be used by researchers to passively monitor users' vital signs, such as respiration rates. While current earbud-based breath rate estimation algorithms mostly focus on resting conditions, recent studies have demonstrated that respiration rates during physical activities can predict cardio-respiratory fitness for healthy individuals and pulmonary conditions for respiratory patients. To address this gap, we propose a novel algorithm called RRDetection that leverages the motion sensors in ordinary earbuds to detect respiration rates during light to moderate physical activities.
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32
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García Cena CE, Silva L, Diaz Palencia FH, Moríñigo MI, Santos CP, Pazmiño RS, Benito-León J, Gómez-Andrés D. Internet of medical things. Measurement of respiratory dynamics using wearable sensors in post-COVID-19 patients. ENFOQUE UTE : REVISTA CIENTIFICA 2023; 14:36-48. [PMID: 37521501 PMCID: PMC10375539 DOI: 10.29019/enfoqueute.972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Nowadays, the measurement of respiratory dynamics is underrated at clinical setting and in the daily life of a subject and it still represents a challenge from a technical and medical point of view. In this article we propose a concept to measure some of its parameters, such as the respiratory rate (RR), using four inertial sensors. Two different experiments were performed to validate the concept. We analyzed the most suitable placement of each sensor to assess those features and we studied the reliability of the system to measure abnormal parameters of respiration (tachypnea, bradypnea and breath holding). Finally, we measured post-COVID-19 patients, some of them with breath alterations after more than a year of the diagnosis. Experimental results showed that the proposed system could be potentially used to measure the respiratory dynamics at clinical setting. Moreover, while RR can be easily calculated by any sensor, other parameters need to be measured with a sensor in a particular position.
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Affiliation(s)
- Cecilia E García Cena
- ETSIDI-Centre for Automation and Robotics from Universidad Politecnica de Madrid. Spain. C. Ronda de Valencia 3, 28012. Madrid. Spain
| | - Luís Silva
- Industrial Electronics Department, University of Minho, Guimarães, Portugal
| | | | - María Islán Moríñigo
- ETSIDI-Centre for Automation and Robotics from Universidad Politecnica de Madrid. Spain. C. Ronda de Valencia 3, 28012. Madrid. Spain
| | - Cristina P Santos
- Industrial Electronics Department, University of Minho, Guimarães, Portugal
| | - Roque Saltarén Pazmiño
- ETSIDI-Centre for Automation and Robotics from Universidad Politecnica de Madrid. Spain. C. Ronda de Valencia 3, 28012. Madrid. Spain
| | - Julian Benito-León
- Department of Neurology,University Hospital "12 de Octubre", Madrid,Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED),Spain; Department of Medicine, 5 Complutense University, Madrid, Spain
| | - David Gómez-Andrés
- Child Neurology Unit. Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Euro-NMD & ERN-RND, Barcelona, Spain
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Romano C, Nicolò A, Innocenti L, Bravi M, Miccinilli S, Sterzi S, Sacchetti M, Schena E, Massaroni C. Respiratory Rate Estimation during Walking and Running Using Breathing Sounds Recorded with a Microphone. BIOSENSORS 2023; 13:637. [PMID: 37367002 DOI: 10.3390/bios13060637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023]
Abstract
Emerging evidence suggests that respiratory frequency (fR) is a valid marker of physical effort. This has stimulated interest in developing devices that allow athletes and exercise practitioners to monitor this vital sign. The numerous technical challenges posed by breathing monitoring in sporting scenarios (e.g., motion artifacts) require careful consideration of the variety of sensors potentially suitable for this purpose. Despite being less prone to motion artifacts than other sensors (e.g., strain sensors), microphone sensors have received limited attention so far. This paper proposes the use of a microphone embedded in a facemask for estimating fR from breath sounds during walking and running. fR was estimated in the time domain as the time elapsed between consecutive exhalation events retrieved from breathing sounds every 30 s. Data were collected from ten healthy subjects (both males and females) at rest and during walking (at 3 km/h and 6 km/h) and running (at 9 km/h and 12 km/h) activities. The reference respiratory signal was recorded with an orifice flowmeter. The mean absolute error (MAE), the mean of differences (MOD), and the limits of agreements (LOAs) were computed separately for each condition. Relatively good agreement was found between the proposed system and the reference system, with MAE and MOD values increasing with the increase in exercise intensity and ambient noise up to a maximum of 3.8 bpm (breaths per minute) and -2.0 bpm, respectively, during running at 12 km/h. When considering all the conditions together, we found an MAE of 1.7 bpm and an MOD ± LOAs of -0.24 ± 5.07 bpm. These findings suggest that microphone sensors can be considered among the suitable options for estimating fR during exercise.
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Affiliation(s)
- Chiara Romano
- Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Andrea Nicolò
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy
| | - Lorenzo Innocenti
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy
| | - Marco Bravi
- Unit of Physical and Rehabilitative Medicine, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Sandra Miccinilli
- Unit of Physical and Rehabilitative Medicine, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Silvia Sterzi
- Unit of Physical and Rehabilitative Medicine, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Massimo Sacchetti
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy
| | - Emiliano Schena
- Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Carlo Massaroni
- Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
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Bustos D, Cardoso R, Carvalho DD, Guedes J, Vaz M, Torres Costa J, Santos Baptista J, Fernandes RJ. Exploring the Applicability of Physiological Monitoring to Manage Physical Fatigue in Firefighters. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115127. [PMID: 37299854 DOI: 10.3390/s23115127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023]
Abstract
Physical fatigue reduces productivity and quality of work while increasing the risk of injuries and accidents among safety-sensitive professionals. To prevent its adverse effects, researchers are developing automated assessment methods that, despite being highly accurate, require a comprehensive understanding of underlying mechanisms and variables' contributions to determine their real-life applicability. This work aims to evaluate the performance variations of a previously developed four-level physical fatigue model when alternating its inputs to have a comprehensive view of the impact of each physiological variable on the model's functioning. Data from heart rate, breathing rate, core temperature and personal characteristics from 24 firefighters during an incremental running protocol were used to develop the physical fatigue model based on an XGBoosted tree classifier. The model was trained 11 times with different input combinations resulting from alternating four groups of features. Performance measures from each case showed that heart rate is the most relevant signal for estimating physical fatigue. Breathing rate and core temperature enhanced the model when combined with heart rate but showed poor performance individually. Overall, this study highlights the advantage of using more than one physiological measure for improving physical fatigue modelling. The findings can contribute to variables and sensor selection in occupational applications and as the foundation for further field research.
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Affiliation(s)
- Denisse Bustos
- Associated Laboratory for Energy, Transports and Aeronautics-LAETA (PROA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Ricardo Cardoso
- Centre of Research, Education, Innovation and Intervention in Sport-CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Diogo D Carvalho
- Centre of Research, Education, Innovation and Intervention in Sport-CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Joana Guedes
- Associated Laboratory for Energy, Transports and Aeronautics-LAETA (PROA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Mário Vaz
- Associated Laboratory for Energy, Transports and Aeronautics-LAETA (PROA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - José Torres Costa
- Associated Laboratory for Energy, Transports and Aeronautics-LAETA (PROA), Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - João Santos Baptista
- Associated Laboratory for Energy, Transports and Aeronautics-LAETA (PROA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Ricardo J Fernandes
- Centre of Research, Education, Innovation and Intervention in Sport-CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
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Paulauskaite-Taraseviciene A, Siaulys J, Sutiene K, Petravicius T, Navickas S, Oliandra M, Rapalis A, Balciunas J. Geriatric Care Management System Powered by the IoT and Computer Vision Techniques. Healthcare (Basel) 2023; 11:healthcare11081152. [PMID: 37107987 PMCID: PMC10138364 DOI: 10.3390/healthcare11081152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/03/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
The digitalisation of geriatric care refers to the use of emerging technologies to manage and provide person-centered care to the elderly by collecting patients' data electronically and using them to streamline the care process, which improves the overall quality, accuracy, and efficiency of healthcare. In many countries, healthcare providers still rely on the manual measurement of bioparameters, inconsistent monitoring, and paper-based care plans to manage and deliver care to elderly patients. This can lead to a number of problems, including incomplete and inaccurate record-keeping, errors, and delays in identifying and resolving health problems. The purpose of this study is to develop a geriatric care management system that combines signals from various wearable sensors, noncontact measurement devices, and image recognition techniques to monitor and detect changes in the health status of a person. The system relies on deep learning algorithms and the Internet of Things (IoT) to identify the patient and their six most pertinent poses. In addition, the algorithm has been developed to monitor changes in the patient's position over a longer period of time, which could be important for detecting health problems in a timely manner and taking appropriate measures. Finally, based on expert knowledge and a priori rules integrated in a decision tree-based model, the automated final decision on the status of nursing care plan is generated to support nursing staff.
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Affiliation(s)
| | - Julius Siaulys
- Faculty of Informatics, Kaunas University of Technology, Studentu 50, 51368 Kaunas, Lithuania
| | - Kristina Sutiene
- Department of Mathematical Modeling, Kaunas University of Technology, Studentu 50, 51368 Kaunas, Lithuania
| | - Titas Petravicius
- Faculty of Informatics, Kaunas University of Technology, Studentu 50, 51368 Kaunas, Lithuania
| | - Skirmantas Navickas
- Faculty of Informatics, Kaunas University of Technology, Studentu 50, 51368 Kaunas, Lithuania
| | - Marius Oliandra
- Faculty of Informatics, Kaunas University of Technology, Studentu 50, 51368 Kaunas, Lithuania
| | - Andrius Rapalis
- Biomedical Engineering Institute, Kaunas University of Technology, K. Barsausko 59, 51423 Kaunas, Lithuania
- Faculty of Electrical and Electronics Engineering, Kaunas University of Technology, Studentu 48, 51367 Kaunas, Lithuania
| | - Justinas Balciunas
- Faculty of Medicine, Vilnius University, Universiteto 3, 01513 Vilnius, Lithuania
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Kim H, Song J, Kim S, Lee S, Park Y, Lee S, Lee S, Kim J. Recent Advances in Multiplexed Wearable Sensor Platforms for Real-Time Monitoring Lifetime Stress: A Review. BIOSENSORS 2023; 13:bios13040470. [PMID: 37185545 PMCID: PMC10136450 DOI: 10.3390/bios13040470] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/06/2023] [Accepted: 04/09/2023] [Indexed: 05/17/2023]
Abstract
Researchers are interested in measuring mental stress because it is linked to a variety of diseases. Real-time stress monitoring via wearable sensor systems can aid in the prevention of stress-related diseases by allowing stressors to be controlled immediately. Physical tests, such as heart rate or skin conductance, have recently been used to assess stress; however, these methods are easily influenced by daily life activities. As a result, for more accurate stress monitoring, validations requiring two or more stress-related biomarkers are demanded. In this review, the combinations of various types of sensors (hereafter referred to as multiplexed sensor systems) that can be applied to monitor stress are discussed, referring to physical and chemical biomarkers. Multiplexed sensor systems are classified as multiplexed physical sensors, multiplexed physical-chemical sensors, and multiplexed chemical sensors, with the effect of measuring multiple biomarkers and the ability to measure stress being the most important. The working principles of multiplexed sensor systems are subdivided, with advantages in measuring multiple biomarkers. Furthermore, stress-related chemical biomarkers are still limited to cortisol; however, we believe that by developing multiplexed sensor systems, it will be possible to explore new stress-related chemical biomarkers by confirming their correlations to cortisol. As a result, the potential for further development of multiplexed sensor systems, such as the development of wearable electronics for mental health management, is highlighted in this review.
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Affiliation(s)
- Heena Kim
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Jaeyoon Song
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Sehyeon Kim
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Suyoung Lee
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Yejin Park
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Seungjun Lee
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Seunghee Lee
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Jinsik Kim
- Department of Biomedical Engineering, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
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Lin YD, Tan YK, Ku T, Tian B. A Frequency Estimation Scheme Based on Gaussian Average Filtering Decomposition and Hilbert Transform: With Estimation of Respiratory Rate as an Example. SENSORS (BASEL, SWITZERLAND) 2023; 23:3785. [PMID: 37112125 PMCID: PMC10145328 DOI: 10.3390/s23083785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Frequency estimation plays a critical role in vital sign monitoring. Methods based on Fourier transform and eigen-analysis are commonly adopted techniques for frequency estimation. Because of the nonstationary and time-varying characteristics of physiological processes, time-frequency analysis (TFA) is a feasible way to perform biomedical signal analysis. Among miscellaneous approaches, Hilbert-Huang transform (HHT) has been demonstrated to be a potential tool in biomedical applications. However, the problems of mode mixing, unnecessary redundant decomposition and boundary effect are the common deficits that occur during the procedure of empirical mode decomposition (EMD) or ensemble empirical mode decomposition (EEMD). The Gaussian average filtering decomposition (GAFD) technique has been shown to be appropriate in several biomedical scenarios and can be an alternative to EMD and EEMD. This research proposes the combination of GAFD and Hilbert transform that is termed the Hilbert-Gauss transform (HGT) to overcome the conventional drawbacks of HHT in TFA and frequency estimation. This new method is verified to be effective for the estimation of respiratory rate (RR) in finger photoplethysmography (PPG), wrist PPG and seismocardiogram (SCG). Compared with the ground truth values, the estimated RRs are evaluated to be of excellent reliability by intraclass correlation coefficient (ICC) and to be of high agreement by Bland-Altman analysis.
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Affiliation(s)
- Yue-Der Lin
- Department of Automatic Control Engineering, Feng Chia University, Taichung 40724, Taiwan
- Ph.D. Program of Electrical and Communications Engineering, Feng Chia University, Taichung 40724, Taiwan
| | - Yong-Kok Tan
- Ph.D. Program of Electrical and Communications Engineering, Feng Chia University, Taichung 40724, Taiwan
| | - Tienhsiung Ku
- Department of Anesthesiology, Changhua Christian Hospital, Changhua 50051, Taiwan
- Artificial Intelligence Development Center, Changhua Christian Hospital, Changhua 50051, Taiwan
| | - Baofeng Tian
- College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
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Nocera A, Sbrollini A, Romagnoli S, Morettini M, Gambi E, Burattini L. Physiological and Biomechanical Monitoring in American Football Players: A Scoping Review. SENSORS (BASEL, SWITZERLAND) 2023; 23:3538. [PMID: 37050597 PMCID: PMC10098592 DOI: 10.3390/s23073538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
American football is the sport with the highest rates of concussion injuries. Biomedical engineering applications may support athletes in monitoring their injuries, evaluating the effectiveness of their equipment, and leading industrial research in this sport. This literature review aims to report on the applications of biomedical engineering research in American football, highlighting the main trends and gaps. The review followed the PRISMA guidelines and gathered a total of 1629 records from PubMed (n = 368), Web of Science (n = 665), and Scopus (n = 596). The records were analyzed, tabulated, and clustered in topics. In total, 112 studies were selected and divided by topic in the biomechanics of concussion (n = 55), biomechanics of footwear (n = 6), biomechanics of sport-related movements (n = 6), the aerodynamics of football and catch (n = 3), injury prediction (n = 8), heat monitoring of physiological parameters (n = 8), and monitoring of the training load (n = 25). The safety of players has fueled most of the research that has led to innovations in helmet and footwear design, as well as improvements in the understanding and prevention of injuries and heat monitoring. The other important motivator for research is the improvement of performance, which has led to the monitoring of training loads and catches, and studies on the aerodynamics of football. The main gaps found in the literature were regarding the monitoring of internal loads and the innovation of shoulder pads.
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Maity K, Mondal A, Saha MC. Cellulose Nanocrystal-Based All-3D-Printed Pyro-Piezoelectric Nanogenerator for Hybrid Energy Harvesting and Self-Powered Cardiorespiratory Monitoring toward the Human-Machine Interface. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36896956 DOI: 10.1021/acsami.2c21680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Biomaterials with spontaneous piezoelectric property are highly emerging in recent times for the generation of electricity from mechanical energy sources that are amply available in nature. In this context, pyroelectricity, an integral property of piezoelectric materials, might be an interesting tool in harvesting thermal energy from the fluctuations of temperature. On the other hand, respiration and heart pulse are the significant human vital signs that can be used for early detection and prevention of cardiorespiratory diseases. Here, we report an all-three-dimensional (3D)-printed pyro-piezoelectric nanogenerator (Py-PNG) based on the most abundant and completely biodegradable biopolymer on earth, i.e., cellulose nanocrystal (CNC) for hybrid (mechanical as well as thermal) energy harvesting, and interestingly, the NG could be used as an e-skin sensor for application in self-powered noninvasive cardiorespiratory monitoring for personal healthcare. Notably, the CNC-based device will be biocompatible and economically advantageous due to its biomaterial-based supremacy and huge availability. This is an original approach with 3D geometrical advancement in designing a NG/sensor, where the unique all-3D-printed manner is adopted, and certainly, it has promising potential in reducing the number of processing steps to required equipment during the multilayer fabrication. The all-3D-printed NG/sensor shows outstanding mechano-thermal energy harvesting performance along with sensitivity and is capable of accurate detection of heart pulse as well as respiration, whenever and whichever required without the need of any battery or an external power supply. In addition, we have also extended its application in demonstrating a smart mask-based breath monitoring system. Thus, the real-time cardiorespiratory monitoring provides notable and fascinating information in medical diagnosis, stepping toward biomedical device development and human-machine interface.
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Affiliation(s)
- Kuntal Maity
- School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Anirban Mondal
- School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Mrinal C Saha
- School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
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40
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Romano C, Nicolò A, Innocenti L, Sacchetti M, Schena E, Massaroni C. Design and Testing of a Smart Facemask for Respiratory Monitoring during Cycling Exercise. BIOSENSORS 2023; 13:369. [PMID: 36979581 PMCID: PMC10046471 DOI: 10.3390/bios13030369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Given the importance of respiratory frequency (fR) as a valid marker of physical effort, there is a growing interest in developing wearable devices measuring fR in applied exercise settings. Biosensors measuring chest wall movements are attracting attention as they can be integrated into textiles, but their susceptibility to motion artefacts may limit their use in some sporting activities. Hence, there is a need to exploit sensors with signals minimally affected by motion artefacts. We present the design and testing of a smart facemask embedding a temperature biosensor for fR monitoring during cycling exercise. After laboratory bench tests, the proposed solution was tested on cyclists during a ramp incremental frequency test (RIFT) and high-intensity interval training (HIIT), both indoors and outdoors. A reference flowmeter was used to validate the fR extracted from the temperature respiratory signal. The smart facemask showed good performance, both at a breath-by-breath level (MAPE = 2.56% and 1.64% during RIFT and HIIT, respectively) and on 30 s average fR values (MAPE = 0.37% and 0.23% during RIFT and HIIT, respectively). Both accuracy and precision (MOD ± LOAs) were generally superior to those of other devices validated during exercise. These findings have important implications for exercise testing and management in different populations.
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Affiliation(s)
- Chiara Romano
- The Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Andrea Nicolò
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| | - Lorenzo Innocenti
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| | - Massimo Sacchetti
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| | - Emiliano Schena
- The Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
| | - Carlo Massaroni
- The Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy
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Bujan B, Fischer T, Dietz-Terjung S, Bauerfeind A, Jedrysiak P, Große Sundrup M, Hamann J, Schöbel C. Clinical validation of a contactless respiration rate monitor. Sci Rep 2023; 13:3480. [PMID: 36859403 PMCID: PMC9975830 DOI: 10.1038/s41598-023-30171-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 02/16/2023] [Indexed: 03/03/2023] Open
Abstract
Respiratory rate (RR) is an often underestimated and underreported vital sign with tremendous clinical value. As a predictor of cardiopulmonary arrest, chronic obstructive pulmonary disease (COPD) exacerbation or indicator of health state for example in COVID-19 patients, respiratory rate could be especially valuable in remote long-term patient monitoring, which is challenging to implement. Contactless devices for home use aim to overcome these challenges. In this study, the contactless Sleepiz One+ respiration monitor for home use during sleep was validated against the thoracic effort belt. The agreement of instantaneous breathing rate and breathing rate statistics between the Sleepiz One+ device and the thoracic effort belt was initially evaluated during a 20-min sleep window under controlled conditions (no body movement) on a cohort of 19 participants and secondly in a more natural setting (uncontrolled for body movement) during a whole night on a cohort of 139 participants. Excellent agreement was shown for instantaneous breathing rate to be within 3 breaths per minute (Brpm) compared to thoracic effort band with an accuracy of 100% and mean absolute error (MAE) of 0.39 Brpm for the setting controlled for movement, and an accuracy of 99.5% with a MAE of 0.48 Brpm for the whole night measurement, respectively. Excellent agreement was also achieved for the respiratory rate statistics over the whole night with absolute errors of 0.43, 0.39 and 0.67 Brpm for the 10th, 50th and 90th percentiles, respectively. Based on these results we conclude that the Sleepiz One+ can estimate instantaneous respiratory rate and its summary statistics at high accuracy in a clinical setting. Further studies are required to evaluate the performance in the home environment, however, it is expected that the performance is at similar level, as the measurement conditions for the Sleepiz One+ device are better at home than in a clinical setting.
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Affiliation(s)
- Bartosz Bujan
- Klinik Lengg AG, Neurorehabilitation Center, Bleulerstrasse 60, 8008, Zurich, Switzerland.
| | - Tobit Fischer
- grid.477805.90000 0004 7470 9004Essen University Hospital, Ruhrlandklinik, Tueschener Weg 40, 45239 Essen, Germany
| | - Sarah Dietz-Terjung
- grid.477805.90000 0004 7470 9004Essen University Hospital, Ruhrlandklinik, Tueschener Weg 40, 45239 Essen, Germany
| | - Aribert Bauerfeind
- grid.419749.60000 0001 2235 3868Klinik Lengg AG, Swiss Epilepsy Center, Bleulerstrasse 60, 8008 Zurich, Switzerland
| | - Piotr Jedrysiak
- Essen University Hospital, Neurorehabilitation Center, Bleulerstrasse 60, 8008 Zurich, Switzerland
| | - Martina Große Sundrup
- grid.477805.90000 0004 7470 9004Essen University Hospital, Ruhrlandklinik, Tueschener Weg 40, 45239 Essen, Germany
| | - Janne Hamann
- grid.419749.60000 0001 2235 3868Klinik Lengg AG, Swiss Epilepsy Center, Bleulerstrasse 60, 8008 Zurich, Switzerland
| | - Christoph Schöbel
- grid.477805.90000 0004 7470 9004Essen University Hospital, Ruhrlandklinik, Tueschener Weg 40, 45239 Essen, Germany
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Sharpe E, Butler MP, Clark-Stone J, Soltanzadeh R, Jindal R, Hanes D, Bradley R. A closer look at yoga nidra- early randomized sleep lab investigations. J Psychosom Res 2023; 166:111169. [PMID: 36731199 PMCID: PMC9973252 DOI: 10.1016/j.jpsychores.2023.111169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 01/21/2023] [Accepted: 01/22/2023] [Indexed: 01/30/2023]
Abstract
OBJECTIVES We aimed to examine trial feasibility plus physiological and psychological effects of a guided meditation practice, Yoga Nidra, in adults with self-reported insomnia. METHODS Twenty-two adults with self-reported insomnia were recruited to attend two visits at our research center. At Visit 1 (V1), participants were asked to lie quietly for ninety minutes. The primary outcome was change in electroencephalography (EEG). Heart rate variability (HRV), respiratory rate and self-reported mood and anxiety were also measured. At Visit 2 (V2), the same protocol was followed, except half of participants were randomized to practice Yoga Nidra for the first 30-min. RESULTS There were no between-group changes (V1-V2) in alpha EEG power at O1 (Intervention: 13 ± 70%; Control: -20 ± 40%), HRV or sleep onset latency in response to Yoga Nidra. Respiratory rate, however, showed statistically significant difference between groups (Yoga Nidra -1.4 breaths per minute (bpm) change during and - 2.1 bpm afterwards vs. Control +0.2 bpm during and + 0.4 bpm after; p = .03 for both during and after). The intervention displayed good acceptability (well-tolerated) and credibility (perceived benefit ratings) with implementation success (target sample size reached; 5% dropout rate). CONCLUSIONS This preliminary clinical trial provides early evidence that Yoga Nidra is a well-tolerated, feasible intervention for adults reporting insomnia. Decreased respiratory rate in response to Yoga Nidra needs to be confirmed in more definitive studies. TRIAL REGISTRATION INFORMATION This trial was registered on ClinicalTrials.gov as "A Closer Look at Yoga Nidra: Sleep Lab Analyses" (NCT#03685227).
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Affiliation(s)
- Erica Sharpe
- National University of Natural Medicine, Portland, OR, USA; State University of New York at Canton, Canton, NY, USA.
| | | | | | | | - Ripu Jindal
- Birmingham VA Medical Center, Birmingham, AL, USA.
| | - Douglas Hanes
- National University of Natural Medicine, Portland, OR, USA.
| | - Ryan Bradley
- National University of Natural Medicine, Portland, OR, USA; University of California, San Diego, La Jolla, CA, USA.
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Oyarzo-Aravena A, Arce-Alvarez A, Salazar-Ardiles C, Ramirez-Campillo R, Alvarez C, Toledo C, Izquierdo M, Andrade DC. Cardiorespiratory optimal point as a submaximal evaluation tool in endurance athletes: An exploratory study. Front Physiol 2023; 14:1087829. [PMID: 36860520 PMCID: PMC9969083 DOI: 10.3389/fphys.2023.1087829] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/24/2023] [Indexed: 02/15/2023] Open
Abstract
Introduction: The cardiorespiratory optimal point (COP) represents the lowest minute ventilation to oxygen consumption ratio (VE/VO2) and can be estimated during a CPET at submaximal intensity when an exercise test until volitional fatigue is not always advisable (i.e., a conflict zone where you cannot be confident of the security because near-competition, off-season, among other). COP's physiological components have not been wholly described yet. Therefore, this study seeks to identify the determinants of COP in highly trained athletes and its influence on maximum and sub-maximum variables during CPET through principal c omponent analysis (PCA) (explains the dataset's variance). Methods: Female (n = 9; age, 17.4 ± 3.1 y; maximal VO2 [VO2max]), 46.2 ± 5.9 mL/kg/min) and male (n = 24; age, 19.7 ± 4.0 y; VO2max, 56.1 ± 7.6 mL/kg/min) athletes performed a CPET to determine the COP, ventilatory threshold 1 (VT1) and 2 (VT2), and VO2max. The PCA was used to determine the relationship between variables and COP, explaining their variance. Results: Our data revealed that females and males displayed different COP values. Indeed, males showed a significant diminished COP compared to the female group (22.6 ± 2.9 vs. 27.2 ±3.4 VE/VO2, respectively); nevertheless, COP was allocated before VT1 in both groups. Discussion: PC analysis revealed that the COP variance was mainly explained (75.6%) by PC1 (expired CO2 at VO2max) and PC2 (VE at VT2), possibly influencing cardiorespiratory efficiency at VO2max and VT2. Our data suggest that COP could be used as a submaximal index to monitor and assess cardiorespiratory system efficiency in endurance athletes. The COP could be particularly useful during the offseason and competitive periods and the return to the sports continuum.
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Affiliation(s)
- Alexis Oyarzo-Aravena
- Exercise Applied Physiology Laboratory, Centro de investigación en Fisiología y Medicina de Altura, Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile,Magister en Fisiología Clínica de Ejercicio, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Alexis Arce-Alvarez
- Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago, Chile
| | - Camila Salazar-Ardiles
- Exercise Applied Physiology Laboratory, Centro de investigación en Fisiología y Medicina de Altura, Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile,Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain
| | - Rodrigo Ramirez-Campillo
- Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
| | - Cristian Alvarez
- Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
| | - Camilo Toledo
- Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mikel Izquierdo
- Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain,CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - David C. Andrade
- Exercise Applied Physiology Laboratory, Centro de investigación en Fisiología y Medicina de Altura, Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile,*Correspondence: David C. Andrade,
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Nicolò A, Sacchetti M. Differential control of respiratory frequency and tidal volume during exercise. Eur J Appl Physiol 2023; 123:215-242. [PMID: 36326866 DOI: 10.1007/s00421-022-05077-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022]
Abstract
The lack of a testable model explaining how ventilation is regulated in different exercise conditions has been repeatedly acknowledged in the field of exercise physiology. Yet, this issue contrasts with the abundance of insightful findings produced over the last century and calls for the adoption of new integrative perspectives. In this review, we provide a methodological approach supporting the importance of producing a set of evidence by evaluating different studies together-especially those conducted in 'real' exercise conditions-instead of single studies separately. We show how the collective assessment of findings from three domains and three levels of observation support the development of a simple model of ventilatory control which proves to be effective in different exercise protocols, populations and experimental interventions. The main feature of the model is the differential control of respiratory frequency (fR) and tidal volume (VT); fR is primarily modulated by central command (especially during high-intensity exercise) and muscle afferent feedback (especially during moderate exercise) whereas VT by metabolic inputs. Furthermore, VT appears to be fine-tuned based on fR levels to match alveolar ventilation with metabolic requirements in different intensity domains, and even at a breath-by-breath level. This model reconciles the classical neuro-humoral theory with apparently contrasting findings by leveraging on the emerging control properties of the behavioural (i.e. fR) and metabolic (i.e. VT) components of minute ventilation. The integrative approach presented is expected to help in the design and interpretation of future studies on the control of fR and VT during exercise.
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Affiliation(s)
- Andrea Nicolò
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro De Bosis 6, 00135, Rome, Italy.
| | - Massimo Sacchetti
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro De Bosis 6, 00135, Rome, Italy
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Eisenkraft A, Goldstein N, Ben Ishay A, Fons M, Tabi M, Sherman AD, Merin R, Nachman D. Clinical validation of a wearable respiratory rate device: A brief report. Chron Respir Dis 2023; 20:14799731231198865. [PMID: 37612250 PMCID: PMC10461800 DOI: 10.1177/14799731231198865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Respiratory rate (RR) is used for the diagnosis and management of medical conditions and can predict clinical changes. Heavy workload, understaffing, and errors related to poor recording make it underutilized. Wearable devices may facilitate its use. METHODS RR measurements using a wearable photoplethysmography-based monitor were compared with medical grade devices in complementary clinical scenarios: Study one included a comparison to a capnograph in 35 healthy volunteers; Study two included a comparison to a ventilator monitor in 18 ventilated patients; and Study three included a comparison to capnograph in 92 COVID-19 patients with active pulmonary disease. Pearson's correlations and Bland-Altman analysis were used to assess the accuracy and agreement between the measurement techniques, including stratification for Body Mass Index (BMI) and skin tone. Statistical significance was set at p ≤ 0.05. RESULTS High correlation was found in all studies (r = 0.991, 0.884, and 0.888, respectively, p < 0.001 for all). 95% LOA of ±2.3, 1.7-(-1.6), and ±3.9 with a bias of < 0.1 breaths per minute was found in Bland-Altman analysis in studies 1,2, and 3, respectively. In all, high accordance was found in all sub-groups. CONCLUSIONS RR measurements using the wearable monitor were highly-correlated with medical-grade devices in various clinical settings. TRIAL REGISTRATION ClinicalTrials.gov, https://clinicaltrials.gov/ct2/show/NCT03603860.
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Affiliation(s)
- Arik Eisenkraft
- Biobeat Technologies Ltd, Petah Tikva, Israel
- Institute for Research in Military Medicine, Faculty of Medicine, The Hebrew University of Jerusalem and the Israel Defense Force Medical Corps, Jerusalem, Israel
| | | | | | - Meir Fons
- Biobeat Technologies Ltd, Petah Tikva, Israel
| | | | | | - Roei Merin
- Biobeat Technologies Ltd, Petah Tikva, Israel
- Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dean Nachman
- Institute for Research in Military Medicine, Faculty of Medicine, The Hebrew University of Jerusalem and the Israel Defense Force Medical Corps, Jerusalem, Israel
- Heart Institute, Hadassah Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
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46
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Harbour E, van Rheden V, Schwameder H, Finkenzeller T. Step-adaptive sound guidance enhances locomotor-respiratory coupling in novice female runners: A proof-of-concept study. Front Sports Act Living 2023; 5:1112663. [PMID: 36935883 PMCID: PMC10014560 DOI: 10.3389/fspor.2023.1112663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/02/2023] [Indexed: 03/04/2023] Open
Abstract
Introduction Many runners struggle to find a rhythm during running. This may be because 20-40% of runners experience unexplained, unpleasant breathlessness at exercise onset. Locomotor-respiratory coupling (LRC), a synchronization phenomenon in which the breath is precisely timed with the steps, may provide metabolic or perceptual benefits to address these limitations. It can also be consciously performed. Hence, we developed a custom smartphone application to provide real-time LRC guidance based on individual step rate. Methods Sixteen novice-intermediate female runners completed two control runs outdoors and indoors at a self-selected speed with auditory step rate feedback. Then, the runs were replicated with individualized breath guidance at specific LRC ratios. Hexoskin smart shirts were worn and analyzed with custom algorithms to estimate continuous LRC frequency and phase coupling. Results LRC guidance led to a large significant increase in frequency coupling outdoor from 26.3 ± 10.7 (control) to 69.9 ± 20.0 % (LRC) "attached". There were similarly large differences in phase coupling between paired trials, and LRC adherence was stronger for the indoor treadmill runs versus outdoors. There was large inter-individual variability in running pace, preferred LRC ratio, and instruction adherence metrics. Discussion Our approach demonstrates how personalized, step-adaptive sound guidance can be used to support this breathing strategy in novice runners. Subsequent investigations should evaluate the skill learning of LRC on a longer time basis to effectively clarify its risks and advantages.
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Affiliation(s)
- Eric Harbour
- Department of Sport and Exercise Science, Paris Lodron University of Salzburg, Salzburg, Austria
- Correspondence: Eric Harbour
| | - Vincent van Rheden
- Department of Artificial Intelligence and Human Interfaces, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Hermann Schwameder
- Department of Sport and Exercise Science, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Thomas Finkenzeller
- Department of Sport and Exercise Science, Paris Lodron University of Salzburg, Salzburg, Austria
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De Fazio R, Greco MR, De Vittorio M, Visconti P. A Differential Inertial Wearable Device for Breathing Parameter Detection: Hardware and Firmware Development, Experimental Characterization. SENSORS (BASEL, SWITZERLAND) 2022; 22:9953. [PMID: 36560322 PMCID: PMC9787627 DOI: 10.3390/s22249953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/03/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Breathing monitoring is crucial for evaluating a patient's health status. The technologies commonly used to monitor respiration are costly, bulky, obtrusive, and inaccurate, mainly when the user moves. Consequently, efforts have been devoted to providing new solutions and methodologies to overcome these limitations. These methods have several uses, including healthcare monitoring, measuring athletic performance, and aiding patients with respiratory diseases, such as COPD (chronic obtrusive pulmonary disease), sleep apnea, etc. Breathing-induced chest movements can be measured noninvasively and discreetly using inertial sensors. This research work presents the development and testing of an inertia-based chest band for breathing monitoring through a differential approach. The device comprises two IMUs (inertial measurement units) placed on the patient's chest and back to determine the differential inertial signal, carrying out information detection about the breathing activity. The chest band includes a low-power microcontroller section to acquire inertial data from the two IMUs and process them to extract the breathing parameters (i.e., RR-respiration rate; TI/TE-inhalation/exhalation time; IER-inhalation-to-exhalation time; V-flow rate), using the back IMU as a reference. A BLE transceiver wirelessly transmits the acquired breathing parameters to a mobile application. Finally, the test results demonstrate the effectiveness of the used dual-inertia solution; correlation and Bland-Altman analyses were performed on the RR measurements from the chest band and the reference, demonstrating a high correlation (r¯ = 0.92) and low mean difference (MD¯ = -0.27 BrPM (breaths per minute)), limits of agreement (LoA¯ = +1.16/-1.75 BrPM), and mean absolute error (MAE¯ = 1.15%). Additionally, the experimental results demonstrated that the developed device correctly measured the other breathing parameters (TI, TE, IER, and V), keeping an MAE of ≤5%. The obtained results indicated that the developed chest band is a viable solution for long-term breathing monitoring, both in stationary and moving users.
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Affiliation(s)
- Roberto De Fazio
- Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
| | - Maria Rosaria Greco
- Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
| | - Massimo De Vittorio
- Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology IIT, 73010 Arnesano, Italy
| | - Paolo Visconti
- Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology IIT, 73010 Arnesano, Italy
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48
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Hou X, Liu C. Rope Jumping Strength Monitoring on Smart Devices via Passive Acoustic Sensing. SENSORS (BASEL, SWITZERLAND) 2022; 22:9739. [PMID: 36560109 PMCID: PMC9783232 DOI: 10.3390/s22249739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/06/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Rope jumping, as a fitness exercise recommended by many sports medicine practitioners, can improve cardiorespiratory capacity and physical coordination. Existing rope jump monitoring systems have limitations in terms of convenience, comfort, and exercise intensity evaluation. This paper presents a rope jump monitoring system using passive acoustic sensing. Our system exploits the off-the-shelf smartphone and headphones to capture the user's rope-jumping sound and breathing sound after exercise. Given the captured acoustic data, the system uses a short-time energy-based approach and the high correlation between rope jumping cycles to detect the rope-jumping sound frames, then applies a dual-threshold endpoint detection algorithm to calculate the number of rope jumps. Finally, our system performs regression predictions of exercise intensity based on features extracted from the jumping speed and the mel spectrograms of the user's breathing sound. The significant advantage of the system lies in the solution of the problem of poorly characterized mel spectrograms. We employ an attentive mechanism-based GAN to generate optimized breathing sound mel spectrograms and apply domain adversarial adaptive in the network to improve the migration capability of the system. Through extensive experiments, our system achieves (on average) 0.32 and 2.3% error rates for the rope jumping count and exercise intensity evaluation, respectively.
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Affiliation(s)
| | - Chao Liu
- Correspondence: ; Tel.: +86-18660226768
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49
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Li W, Yu H, Li B, Zhang Y, Fu M. The transcultural adaptation and validation of the Chinese version of the Attitudes Toward Recognizing Early and Noticeable Deterioration scale. Front Psychol 2022; 13:1062949. [PMID: 36562070 PMCID: PMC9765647 DOI: 10.3389/fpsyg.2022.1062949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Background In China, clinical deterioration events present a real problem for every clinical nurse. Patient deterioration is determined in part by nurses' attitudes toward early recognition of clinical deterioration. However, research on attitudes toward the early identification of clinical deterioration is still in its infancy, and even less research has been done on ward nurses' attitudes toward the early identification of clinical deterioration. To drive behavioral change and improve the care of deteriorating patients, nurses need comprehensive, valid, and reliable tools to assess their attitudes toward early identification of deterioration. Objective In this study, we aimed to translate the Attitudes Toward Recognizing Early and Noticeable Deterioration (ATREND) scale into Chinese and to assess its validity and reliability tests. Methods From March 2022 to July 2022, the ATREND scale was translated, back-translated, and cross-culturally adapted into the Chinese version using a modified Brislin translation model. Then, 460 ward nurses were recruited from tertiary Grade A general hospitals in two cities: Shenyang and Jinzhou in Liaoning Province, China. Reliability analyses were conducted using internal consistency, split-half, and test-retest reliability. We convened a committee of experts to determine the validity of the content. Tests of the structural validity of the scale were conducted using exploratory and validation factor analyses. Results The Cronbach's α value of the Chinese version of the ATREND scale was 0.804, and the Cronbach's α value of the dimensions ranged from 0.782 to 0.863. The split-half reliability and test-retest reliability were 0.846 and 0.711, respectively. Furthermore, the scale has an index of content validity of 0.922, indicating a high level of content validity. In exploratory factor analysis, eigenvalues, total variance explained, and scree plot supported a three-factor structure. The three-factor model supported by this study was confirmed by confirmatory factor analysis (CFA). Moreover, the model fitting indexes (e.g., χ 2/DF = 1.498, GFI = 0.954, RMSEA = 0.047) were all within acceptable limits based on the CFA. Conclusion The Chinese version of the scale is reliable and valid among ward nurses. Nursing educators and clinicians will be able to develop targeted educational programs to enhance the competence and behaviors of Chinese ward nurses in recognizing clinical deterioration. It will be based on the developed scale to assess Chinese nurses' attitudes and practices regarding early recognition of clinical deterioration. As a result, it is necessary to consider the Chinese scale's three-factor structure. The developed three-factor structured scale will assess Chinese ward nurses' attitudes and practices toward patient observation and vital sign-monitoring empowerment, enlightening them on the importance of patient observation, encouraging ward nurses to use a wider range of patient assessment techniques to capture early signs of clinical deterioration, and helping ward nurses to develop clinical confidence to monitor clinical deterioration.
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Affiliation(s)
- Wenbo Li
- Department of Nursing, Jinzhou Medical University, Jinzhou, China
| | - Hongyu Yu
- Department of Nursing, Jinzhou Medical University, Jinzhou, China,*Correspondence: Hongyu Yu,
| | - Bing Li
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanli Zhang
- Department of Nursing, Jinzhou Medical University, Jinzhou, China
| | - Mingshu Fu
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, Shenyang, China
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Huang F, Shen T, Hai X, Xiu H, Zhang K, Huang T, Chen J, Guan Z, Zhou H, Cai J, Cai Z, Cui W, Zhang S, Zhang G. Clinical characteristics of and risk factors for secondary bloodstream infection after pneumonia among patients infected with methicillin-resistant Staphylococcus aureus. Heliyon 2022; 8:e11978. [PMID: 36506352 PMCID: PMC9732304 DOI: 10.1016/j.heliyon.2022.e11978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/29/2022] [Accepted: 11/23/2022] [Indexed: 12/04/2022] Open
Abstract
Purpose To investigate the clinical features and risk factors for methicillin-resistant Staphylococcus aureus (MRSA) pneumonia (MP) with secondary MRSA bloodstream infections (MRSA-BSI) (termed MP-BSI) compared with MP alone and to study the incidence of MP-BSI among patients with MP. Methods This was a retrospective, single-center study with clinical data derived from previous medical records. The cases were divided into groups: MP alone and MP-BSI. The determination of independent risk factors for MP-BSI relied on logistic regression analysis. Additionally, the crude outcomes were compared. Results A total of 435 patients with MP were recruited, with 18.9% (82/435) having MP-BSI. The median age was 62 (interquartile range, 51,72) years, and 74.5% of the patients were male. Multivariate analysis revealed that immunosuppression, community-acquired MP (CA-MP), time from initial to targeted antibiotic use, high Sequential Organ Failure Assessment (SOFA) score, increased respiratory rate, and elevated γ-GT level (all p < 0.05) were independent risk factors for MP-BSI, while targeted treatment with linezolid was a protective factor. Patients with MP-BSI had a longer duration of hospitalization (median days, 27.5 vs. 19, p = 0.001), a higher 28-day mortality rate (24.4% vs. 11.0%, p = 0.001), and a higher in-hospital mortality rate (26.8% vs. 14.7%, p = 0.009) than those with MP alone. Conclusion Secondary MRSA-BSI among patients with MP is not rare. Immunosuppression, CA-MP, time from initial to targeted antibiotic use, high SOFA score, increased respiratory rate and elevated γ-GT level are all independent risk factors for MP-BSI; however, linezolid, as a targeted antibiotic, is a protective factor. Moreover, patients with MP may have worse clinical outcomes when they develop MRSA-BSI.
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Affiliation(s)
- Fangfang Huang
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Department of Critical Care Medicine, Yuyao People's Hospital, Yuyao 315400, China
| | - Ting Shen
- Department of Critical Care Medicine, Yuyao People's Hospital, Yuyao 315400, China
| | - Xin Hai
- Department of Pharmacy, First Affiliated Hospital, Harbin Medical University, Harbin, 150001, China
| | - Huiqing Xiu
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Kai Zhang
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Tiancha Huang
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Juan Chen
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Department of Intensive Care Unit, Ningbo Fourth Hospital Ningbo, Zhejiang 315700, China
| | - Zhihui Guan
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Department of Critical Care Medicine, Taizhou First People's Hospital, Taizhou 318020, China
| | - Hongwei Zhou
- Clinical Microbiology Laboratory, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Jiachang Cai
- Clinical Microbiology Laboratory, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Zhijian Cai
- Institute of Immunology, and Department of Orthopaedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Wei Cui
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Corresponding author.
| | - Shufang Zhang
- Department of Cardiology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Corresponding author.
| | - Gensheng Zhang
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China,Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, China,Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, China,Corresponding author.
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