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Marquis A, Douillet D, Morin F, Chauvat D, Sechet A, Lacour H, Poiroux L, Savary D. Comparison of chest compression quality between the overlapping hands and interlocking hands techniques: A randomised cross-over trial. Am J Emerg Med 2023; 74:9-13. [PMID: 37729735 DOI: 10.1016/j.ajem.2023.08.039] [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: 03/23/2023] [Revised: 08/06/2023] [Accepted: 08/22/2023] [Indexed: 09/22/2023] Open
Abstract
BACKGROUND Performing quality chest compressions is fundamental to the management of cardiopulmonary arrest. The aim of this study was to compare the efficacy of two hand positions: overlapping versus interlocking for performing chest compressions during cardiopulmonary arrest. METHODS The HP2C (for Hands Position and Chest Compression) was a prospective, randomised, open-label, cross-over, single-centre study. Participants were recruited from the Emergency Medical Service (EMS) teams and the prehospital firefighter teams. They were randomised to start chest compressions either with overlapping or interlocking hands and then performed the other technique after a washout period. The judgement criteria were the overall chest compressions success score generated by software in accordance with ILCOR recommendations, the quality of compression, release, rate and subjective intensity measured with the Borg scale. RESULTS A total of 100 participants were included in the study. The mean age of the caregivers was 38 ± 9.3 years. The median CPR score was 79.5% IQR [48.5-94.0] in the overlapping hands group and 71% IQR [38.0-92.8] in the interlocking hands group (p-value = 0.37). There was no significant difference for the other criteria, especially no difference in term of intensity of effort. However, there was a trend towards better results with overlapping hands. CONCLUSIONS This study failed to demonstrate a difference in effectiveness between overlapping and interlocking hand chest compressions during cardiopulmonary resuscitation.
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Affiliation(s)
- Aurélien Marquis
- Centre for Emergency Care Teaching (CESU 49), Angers University Hospital, Angers, France
| | - Delphine Douillet
- Centre for Emergency Care Teaching (CESU 49), Angers University Hospital, Angers, France; Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France; UMR MitoVasc CNRS 6215 INSERM 1083, University of Angers, 49100 Angers, France.
| | - François Morin
- Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France
| | - Damien Chauvat
- Centre for Emergency Care Teaching (CESU 49), Angers University Hospital, Angers, France; Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France
| | - Aurélien Sechet
- Centre for Emergency Care Teaching (CESU 49), Angers University Hospital, Angers, France; Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France
| | - Hélène Lacour
- Centre for Emergency Care Teaching (CESU 49), Angers University Hospital, Angers, France; Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France
| | - Laurent Poiroux
- Delegation to Clinical Research and Innovation, Angers University Hospital, 49100 Angers, France
| | - Dominique Savary
- Emergency Department, Angers University Hospital, Avenue de l'Hôtel Dieu, 49100 Angers, France; Inserm, EHESP, University of Rennes, Irset (Institut de Recherche en Santé, environnement et travail), UMR_S 1085, 49000 Angers, France
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2
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Huppert EL, Parnia S. Cerebral oximetry: a developing tool for monitoring cerebral oxygenation during cardiopulmonary resuscitation. Ann N Y Acad Sci 2021; 1509:12-22. [PMID: 34780070 DOI: 10.1111/nyas.14706] [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: 05/04/2021] [Revised: 09/25/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022]
Abstract
Despite improvements in cardiopulmonary resuscitation (CPR), survival and neurologic recovery after cardiac arrest remain very poor because of the impact of severe ischemia and subsequent reperfusion injury. As the likelihood of survival and favorable neurologic outcome decreases with increasing severity of ischemia during CPR, developing methods to measure the magnitude of ischemia during resuscitation, particularly cerebral ischemia, is critical for improving overall outcomes. Cerebral oximetry, which measures regional cerebral oxygen saturation (rSO2 ) by near-infrared spectroscopy, has emerged as a potentially beneficial marker of cerebral ischemia during CPR. In numerous preclinical and clinical studies, higher rSO2 during CPR has been associated with improved cardiac arrest survival and neurologic outcome. In this narrative review, we summarize the scientific rationale and validation of cerebral oximetry across populations and pathophysiologic states, discuss the evidence surrounding its use to predict return of spontaneous circulation, rearrest, and neurologic outcome, and provide suggestions for incorporation of cerebral oximetry into CPR practice.
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Affiliation(s)
- Elise L Huppert
- Critical Care and Resuscitation Research Center, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Grossman School of Medicine, New York University Langone Health, New York, New York
| | - Sam Parnia
- Critical Care and Resuscitation Research Center, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Langone Health, New York, New York
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3
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Nelskylä A, Skrifvars MB, Ångerman S, Nurmi J. Incidence of hyperoxia and factors associated with cerebral oxygenation during cardiopulmonary resuscitation. Resuscitation 2021; 170:276-282. [PMID: 34634359 DOI: 10.1016/j.resuscitation.2021.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 09/09/2021] [Accepted: 10/01/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND High oxygen levels may worsen cardiac arrest reperfusion injury. We determined the incidence of hyperoxia during and immediately after successful cardiopulmonary resuscitation and identified factors associated with intra-arrest cerebral oxygenation measured with near-infrared spectroscopy (NIRS). METHODS A prospective observational study of out-of-hospital cardiac arrest patients treated by a physician-staffed helicopter unit. Collected data included intra-arrest brain regional oxygen saturation (rSO2) with NIRS, invasive blood pressures, end-tidal CO2 (etCO2) and arterial blood gas samples. Moderate and severe hyperoxia were defined as arterial oxygen partial pressure (paO2) 20.0-39.9 and ≥40 kPa, respectively. Intra-arrest factors correlated with the NIRS value, rSO2, were assessed with the Spearman's correlation test. RESULTS Of 80 recruited patients, 73 (91%) patients had rSO2 recorded during CPR, and 46 had an intra-arrest paO2 analysed. ROSC was achieved in 28 patients, of whom 20 had paO2 analysed. Moderate hyperoxia was seen in one patient during CPR and in four patients (20%, 95% CI 7-42%) after ROSC. None had severe hyperoxia during CPR, and one patient (5%, 95% 0-25%) immediately after ROSC. The rSO2 during CPR was correlated with intra-arrest systolic (r = 0.28, p < 0.001) and diastolic blood pressure (p = 0.32, p < 0.001) but not with paO2 (r = 0.13, p = 0.41), paCO2 (r = 0.18, p = 0.22) or etCO2 (r = 0.008, p = 0.9). CONCLUSION Hyperoxia during or immediately after CPR is rare in patients treated by physician-staffed helicopter units. Cerebral oxygenation during CPR appears more dependent, albeit weakly, on hemodynamics than arterial oxygen concentration.
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Affiliation(s)
- Annika Nelskylä
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Markus B Skrifvars
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Susanne Ångerman
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Jouni Nurmi
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
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Sanfilippo F, Murabito P, Messina A, Dezio V, Busalacchi D, Ristagno G, Cecconi M, Astuto M. Cerebral regional oxygen saturation during cardiopulmonary resuscitation and return of spontaneous circulation: A systematic review and meta-analysis. Resuscitation 2020; 159:19-27. [PMID: 33333181 DOI: 10.1016/j.resuscitation.2020.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/21/2020] [Accepted: 12/01/2020] [Indexed: 12/29/2022]
Abstract
AIM Predicting the return of spontaneous circulation (ROSC) during cardiopulmonary resuscitation in victims of cardiac arrest (CA) remains challenging. Cerebral regional oxygen saturation (rSO2) measured during resuscitation is feasible, and higher initial and overall values seem associated with ROSC. However, these observations were limited to the analysis of few small single-centre studies. There is a growing number of studies evaluating the role of cerebral rSO2 in the prediction of ROSC. METHODS We conducted an updated meta-analysis aimed at investigating the association of initial and overall values of cerebral rSO2 with ROSC after CA. We performed subgroups analyses according to the location of CA and conducted a secondary analysis according to the country where the study was conducted (resuscitation practice varies greatly for out-of-hospital CA). RESULTS We included 17 studies. Higher initial rSO2 values (11 studies, n = 2870, 16.6% achieved ROSC) were associated with ROSC: Mean Difference (MD) -11.54 [95%Confidence Interval (CI)-20.96, -2.12]; p = 0.02 (I2 = 97%). The secondary analysis confirmed this finding when pooling together European and USA studies, but did not for Japanese studies (p = 0.06). One multi-centre Japanese study was an outlier with large influence on 95%CI. Higher overall rSO2 values during resuscitation (9 studies, n = 894, 33.7% achieving ROSC) were associated with ROSC: MD-10.38; [-13.73, -7.03]; p < 0.00001 (I2 = 77%). All studies were conducted in Europe/USA. CONCLUSIONS This updated meta-analysis confirmed the association between higher initial and overall values of cerebral rSO2 and ROSC after CA. However, we found geographical differences, since this association was not present when Japanese studies were analysed separately.
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Affiliation(s)
- Filippo Sanfilippo
- Department of Anaesthesia and Intensive Care, A.O.U. "Policlinico-San Marco", Catania, Italy.
| | - Paolo Murabito
- Department of Anaesthesia and Intensive Care, A.O.U. "Policlinico-San Marco", Catania, Italy; Department of General Surgery and Medical-Surgical Specialties, Section of Anesthesia and Intensive Care, University of Catania, Catania, Italy; School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
| | - Antonio Messina
- Humanitas Clinical and Research Center - IRCCS, Milano, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, MI, Italy
| | - Veronica Dezio
- School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
| | - Diana Busalacchi
- School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
| | - Giuseppe Ristagno
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Department of Anesthesiology, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Maurizio Cecconi
- Humanitas Clinical and Research Center - IRCCS, Milano, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, MI, Italy
| | - Marinella Astuto
- Department of Anaesthesia and Intensive Care, A.O.U. "Policlinico-San Marco", Catania, Italy; Department of General Surgery and Medical-Surgical Specialties, Section of Anesthesia and Intensive Care, University of Catania, Catania, Italy; School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
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Takegawa R, Hayashida K, Rolston DM, Li T, Miyara SJ, Ohnishi M, Shiozaki T, Becker LB. Near-Infrared Spectroscopy Assessments of Regional Cerebral Oxygen Saturation for the Prediction of Clinical Outcomes in Patients With Cardiac Arrest: A Review of Clinical Impact, Evolution, and Future Directions. Front Med (Lausanne) 2020; 7:587930. [PMID: 33251235 PMCID: PMC7673454 DOI: 10.3389/fmed.2020.587930] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/02/2020] [Indexed: 12/24/2022] Open
Abstract
Despite three decades of advancements in cardiopulmonary resuscitation (CPR) methods and post-resuscitation care, neurological prognosis remains poor among survivors of out-of-hospital cardiac arrest, and there are no reliable methods for predicting neurological outcomes in patients with cardiac arrest (CA). Adopting more effective methods of neurological monitoring may aid in improving neurological outcomes and optimizing therapeutic interventions for each patient. In the present review, we summarize the development, evolution, and potential application of near-infrared spectroscopy (NIRS) in adults with CA, highlighting the clinical relevance of NIRS brain monitoring as a predictive tool in both pre-hospital and in-hospital settings. Several clinical studies have reported an association between various NIRS oximetry measurements and CA outcomes, suggesting that NIRS monitoring can be integrated into standardized CPR protocols, which may improve outcomes among patients with CA. However, no studies have established acceptable regional cerebral oxygen saturation cut-off values for differentiating patient groups based on return of spontaneous circulation status and neurological outcomes. Furthermore, the point at which resuscitation efforts can be considered futile remains to be determined. Further large-scale randomized controlled trials are required to evaluate the impact of NIRS monitoring on survival and neurological recovery following CA.
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Affiliation(s)
- Ryosuke Takegawa
- Laboratory for Critical Care Physiology, Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States.,Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kei Hayashida
- Laboratory for Critical Care Physiology, Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States
| | - Daniel M Rolston
- Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - Timmy Li
- Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - Santiago J Miyara
- Laboratory for Critical Care Physiology, Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States.,Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, United States
| | - Mitsuo Ohnishi
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan.,Department of Acute Medicine and Critical Care Medical Center, Osaka National Hospital, National Hospital Organization, Osaka, Japan
| | - Tadahiko Shiozaki
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Lance B Becker
- Laboratory for Critical Care Physiology, Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, North Shore University Hospital, Northwell Health System, Manhasset, NY, United States.,Department of Emergency Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
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6
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Comparison of manual and mechanical chest compression techniques using cerebral oximetry in witnessed cardiac arrests at the emergency department: A prospective, randomized clinical study. Am J Emerg Med 2020; 41:163-169. [PMID: 33071075 DOI: 10.1016/j.ajem.2020.06.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/31/2020] [Accepted: 06/06/2020] [Indexed: 11/22/2022] Open
Abstract
AIM We aimed to compare regional cerebral oxygen saturation (rSO2) levels during cardiopulmonary resuscitation (CPR), performed either manually or using a mechanical chest compression device (MCCD), in witnessed cardiac arrest cases in the emergency department (ED), and to evaluate the effects of both the CPR methods and perfusion levels on patient survival and neurological outcomes. METHODS This single-center, randomized study recruited patients aged ≥18 years who had witnessed a cardiopulmonary arrest in the ED. According to the relevant guidelines, CPR was performed either manually or using an MCCD. Simultaneously, rSO2 levels were continually measured with near-infrared spectroscopy. RESULTS Seventy-five cases were randomly distributed between the MCCD (n = 40) and manual CPR (n = 35) groups. No significant difference in mean rSO2 levels was found between the MCCD and manual CPR groups (46.35 ± 14.04 and 46.60 ± 12.09, respectively; p = 0.541). However, a significant difference in rSO2 levels was found between patients without return of spontaneous circulation (ROSC) and those with ROSC (40.35 ± 10.05 and 50.50 ± 13.44, respectively; p < 0.001). In predicting ROSC, rSO2 levels ≥24% provided 100% sensitivity (95% confidence interval [CI] 92-100), and rSO2 levels ≥64% provided 100% specificity (95% CI 88-100). The area under the curve for ROSC prediction using rSO2 levels during CPR was 0.74 (95% CI 0.62-0.83). CONCLUSION A relationship between ROSC and high rSO2 levels in witnessed cardiac arrests exists. Monitoring rSO2 levels during CPR would be useful in CPR management and ROSC prediction. During CPR, MCCD or manual chest compression has no distinct effect on oxygen delivery to the brain. TRIAL REGISTRATION clinicaltrials.gov identifier: NCT03238287.
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7
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Hamanaka K, Shimoto M, Hitosugi M, Beppu S, Terashima M, Sasahashi N, Nishiyama K. Cerebral oxygenation monitoring during resuscitation by emergency medical technicians: a prospective multicenter observational study. Acute Med Surg 2020; 7:e528. [PMID: 32566238 PMCID: PMC7299661 DOI: 10.1002/ams2.528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/03/2020] [Accepted: 05/07/2020] [Indexed: 11/12/2022] Open
Abstract
Aim To assess the feasibility and predictive ability of regional cerebral oxygen saturation monitoring during cardiopulmonary resuscitation by emergency medical technicians. Methods This prospective observational study included 33 cardiac arrest patients who received cardiopulmonary resuscitation in a prehospital setting. Patients were connected to a near‐infrared spectrometer through two disposable probes immediately after entering the ambulance. The monitor, which showed regional cerebral oxygen saturation readings, was obscured by covering it with a sheet of paper. Regional cerebral oxygen saturation was measured continuously until hospital arrival. Outcome variables included the prehospital return of spontaneous circulation, survival to hospital admission, and survival at 90 days. Results For patients who survived >90 days after hospital admission (n = 2), the mean regional cerebral oxygen saturation values upon ambulance and hospital arrival were 24% and 60%, respectively; for patients who did not survive (n = 31), the mean regional cerebral oxygen saturation values were 15% and 17%, respectively. Regional cerebral oxygen saturation values increased to a greater extent between ambulance arrival and hospital arrival in patients who survived >90 days (median, 36%; interquartile range, 32–40%) than in those who did not survive (0; 0–6%; P = 0.07). Additionally, regional cerebral oxygen saturation values were not related to the prehospital return of spontaneous circulation or survival to hospital admission. Conclusion Regional cerebral oxygen saturation could be monitored during resuscitation by emergency medical technicians, and it can be used during physiological monitor‐guided cardiopulmonary resuscitation.
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Affiliation(s)
- Kunio Hamanaka
- Department of Trauma and Critical Care Kyoto Medical Center Fushimi Japan
| | - Manabu Shimoto
- Department of Primary Care and Emergency Medicine Kyoto University Graduate School of Medicine Sakyou Japan
| | - Masahito Hitosugi
- Division of Legal Medicine Shiga University of Medical Science Otsu Japan
| | - Satoru Beppu
- Department of Trauma and Critical Care Kyoto Medical Center Fushimi Japan
| | - Mariko Terashima
- Department of Trauma and Critical Care Kyoto Medical Center Fushimi Japan
| | - Nozomu Sasahashi
- Department of Trauma and Critical Care Kyoto Medical Center Fushimi Japan
| | - Kei Nishiyama
- Department of Trauma and Critical Care Kyoto Medical Center Fushimi Japan
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8
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9
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Hubner P, Wijshoff RWCGR, Muehlsteff J, Wallmüller C, Warenits AM, Magnet IAM, Nammi K, Russell JK, Sterz F. On detection of spontaneous pulse by photoplethysmography in cardiopulmonary resuscitation. Am J Emerg Med 2019; 38:526-533. [PMID: 31138516 DOI: 10.1016/j.ajem.2019.05.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/20/2019] [Accepted: 05/22/2019] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE This work investigates the potential of photoplethysmography (PPG) to detect a spontaneous pulse from the finger, nose or ear in order to support pulse checks during cardiopulmonary resuscitation (CPR). METHODS In a prospective single-center cross-sectional study, PPG signals were acquired from cardiac arrest victims who underwent CPR. The PPG signals were analyzed and compared to arterial blood pressure (ABP) signals as a reference during three distranaisco; Date: 2/2/2020; Time:18:44:23inct phases of CPR: compression pauses, on-going compressions and at very low arterial blood pressure. Data analysis was based on a qualitative subjective visual description of similarities of the frequency content of PPG and ABP waveform. RESULTS In 9 patients PPG waveforms corresponded to ABP waveforms during normal blood pressures. During ABP in the clinically challenging range of 60 to 90 mmHg and during chest compressions and pauses, PPG continued to resemble ABP, as both signals showed similar frequency components as a result of chest compressions as well as cardiac activity. Altogether 1199 s of PPG data in compression pauses were expected to show a spontaneous pulse, of which 732 s (61%) of data were artifact-free and showed the spontaneous pulse as visible in the ABP. CONCLUSIONS PPG signals at all investigated sites can indicate pulse presence at the moment the heart resumes beating as verified via the ABP signal. Therefore, PPG may provide decision support during CPR, especially related to preventing and shortening interruptions for unnecessary pulse checks. This could have impact on CPR outcome and should further be investigated.
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Affiliation(s)
- Pia Hubner
- Department of Emergency Medicine, Medical University of Vienna, Austria.
| | | | - Jens Muehlsteff
- Oregon Health and Science University, Department of Emergency Medicine, Portland, OR, USA.
| | | | | | | | - Krishnakant Nammi
- Oregon Health and Science University, Department of Emergency Medicine, Portland, OR, USA.
| | - James K Russell
- Oregon Health and Science University, Department of Emergency Medicine, Portland, OR, USA
| | - Fritz Sterz
- Department of Emergency Medicine, Medical University of Vienna, Austria.
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10
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Two-site regional oxygen saturation and capnography monitoring during resuscitation after cardiac arrest in a swine pediatric ventricular fibrillatory arrest model. J Clin Monit Comput 2019; 34:63-70. [PMID: 30820870 PMCID: PMC7223879 DOI: 10.1007/s10877-019-00291-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 02/23/2019] [Indexed: 11/21/2022]
Abstract
To investigate the use of two-site regional oxygen saturations (rSO2) and end tidal carbon dioxide (EtCO2) to assess the effectiveness of resuscitation and return of spontaneous circulation (ROSC). Eight mechanically ventilated juvenile swine underwent 28 ventricular fibrillatory arrests with open cardiac massage. Cardiac massage was administered to achieve target pulmonary blood flow (PBF) as a percentage of pre-cardiac arrest baseline. Non-invasive data, including, EtCO2, cerebral rSO2 (C-rSO2) and renal rSO2 (R-rSO2) were collected continuously. Our data demonstrate the ability to measure both rSO2 and EtCO2 during CPR and after ROSC. During resuscitation EtCO2 had a strong correlation with goal CO with r = 0.83 (p < 0.001) 95% CI [0.67–0.92]. Both C-rSO2 and R-rSO2 had moderate and statistically significant correlation with CO with r = 0.52 (p = 0.003) 95% CI (0.19–0.74) and 0.50 (p = 0.004) 95% CI [0.16–0.73]. The AUCs for sudden increase of EtCO2, C-rSO2, and R-rSO2 at ROSC were 0.86 [95% CI, 0.77–0.94], 0.87 [95% CI, 0.8–0.94], and 0.98 [95% CI, 0.96–1.00] respectively. Measurement of continuous EtCO2 and rSO2 may be used during CPR to ensure effective chest compressions. Moreover, both rSO2 and EtCO2 may be used to detect ROSC in a swine pediatric ventricular fibrillatory arrest model.
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11
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YAZAR MA, AÇIKGÖZ MB, BAYRAM A. Does chest compression during cardiopulmonary resuscitation provide sufficient cerebral oxygenation? Turk J Med Sci 2019; 49:311-317. [PMID: 30761856 PMCID: PMC7350789 DOI: 10.3906/sag-1809-165] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background/aim Some of the patients suffering from cardiac arrest (CA) remain in a chronic unconscious state in intensive care units (ICUs). The primary aim of this study was to evaluate the efficacy of chest compression (CC) on cerebral oxygenation during cardiopulmonary resuscitation (CPR). As a secondary goal, we attempted to determine the effects of regional cerebral oxygen saturation (rSO2) values on consciousness and the survival rate using the Full Outline of Unresponsiveness (FOUR) scoring method. Materials and methods This observational preliminary study was carried out with 20 patients with CA who were hospitalized in ICUs. The rSO2 values measured by near-infrared spectroscopy were recorded during CA. FOUR scoring was used to determine the neurological status, severity of disease, and degree of organ dysfunction in survivors. Results Return of spontaneous circulation (ROSC) was gained in 8 (40%) of 20 patients. Maximum rSO2 values were higher in survivors than in nonsurvivors (P = 0.005). The mean FOUR score before CA was 11.50 ± 0.8 in survivors, whereas this value was 7.87 ± 0.7 for 1 week after ROSC (P < 0.0001). There was a significant positive correlation between the minimum and mean rSO2 values and the mean 1-week FOUR scores in survivors (r = 0.811, r = 0.771 and P = 0.015, P = 0.025, respectively). Conclusion Our results suggest that the maximum rSO2 values affect ROSC while the minimum and mean rSO2 values affect the post-cardiac arrest neurological outcome.
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Affiliation(s)
- Mehmet Akif YAZAR
- Konya Training and Research Hospital, Meram, KonyaTurkey
- * To whom correspondence should be addressed. E-mail:
| | | | - Adnan BAYRAM
- Faculty of Medicine, Erciyes University, KayseriTurkey
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12
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Maillard J, Sologashvili T, Diaper J, Licker MJ, Keli Barcelos G. A Case of Persistence of Normal Tissue Oxygenation Monitored by Near-Infrared Spectroscopy (NIRS) Values Despite Prolonged Perioperative Cardiac Arrest. AMERICAN JOURNAL OF CASE REPORTS 2019; 20:21-25. [PMID: 30610182 PMCID: PMC6330994 DOI: 10.12659/ajcr.911399] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Patient: Male, 65 Final Diagnosis: Aortic dissection Symptoms: Hemiplegia • hypotension Medication:— Clinical Procedure: Emergent surgery Specialty: Surgery
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Affiliation(s)
- Julien Maillard
- Department of Anesthesiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Tornike Sologashvili
- Department of Surgery, Division Cardiovascular Surgery, University Hospitals of Geneva, Geneva, Switzerland
| | - John Diaper
- Department of Anesthesiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Marc-Joseph Licker
- Department of Anesthesiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Gleicy Keli Barcelos
- Department of Anesthesiology, University Hospitals of Geneva, Geneva, Switzerland
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Regional Cerebral Saturation Monitoring During Cardiopulmonary Resuscitation-The Magic Crystal Ball That Allows Peeking Into the Future? Crit Care Med 2018; 44:1786-8. [PMID: 27525999 DOI: 10.1097/ccm.0000000000001794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Schnaubelt S, Sulzgruber P, Menger J, Skhirtladze-Dworschak K, Sterz F, Dworschak M. Regional cerebral oxygen saturation during cardiopulmonary resuscitation as a predictor of return of spontaneous circulation and favourable neurological outcome - A review of the current literature. Resuscitation 2018; 125:39-47. [PMID: 29410191 DOI: 10.1016/j.resuscitation.2018.01.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 01/04/2018] [Accepted: 01/21/2018] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Regional cerebral oxygen saturation (rSO2) can be measured non-invasively even at no- or low-flow states. It thus allows assessment of brain oxygenation during CPR. Certain rSO2 values had been associated with return of spontaneous circulation (ROSC) and neurological outcome in the past. Clear-cut thresholds for the prediction of beneficial outcome, however, are still lacking. METHODS We conducted a database search to extract all available investigations on rSO2 measurement during CPR. Mean, median, and ΔrSO2 values were either taken from the studies or calculated. Thresholds for the outcome "ROSC" and "neurological outcome" were sought. RESULTS We retrieved 26 publications for the final review. The averaged mean rSO2 for patients achieving ROSC was 41 ± 12% vs. 30 ± 12% for non-ROSC (p = .009). ROSC was not observed when mean rSO2 remained <26%. In ROSC patients, ΔrSO2 was 22 ± 16% vs. 7 ± 10% in non-ROSC patients (p = .009). A rSO2 threshold of 36% predicted ROSC with a sensitivity of 67% and specificity of 69% while ΔrSO2 of 7% showed a sensitivity of 100% and a specificity of 86% (AUC = 0.733 and 0.893, respectively). Mean rSO2 of 47 ± 11% was associated with favourable and 38 ± 12% with poor neurological outcome. There was, however, a great overlap between groups due to scarce data. CONCLUSION Higher rSO2 consistently correlated with increased rates of ROSC. The discriminatory power of rSO2 to prognosticate favourable neurological outcome remains unclear. Measuring rSO2 during CPR could potentially facilitate clinical decision-making.
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Affiliation(s)
- S Schnaubelt
- Division of Cardiothoracic and Vascular Anaesthesia and Intensive Care Medicine, Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna General Hospital, Austria; Department of Emergency Medicine, Medical University of Vienna, Vienna General Hospital, Austria
| | - P Sulzgruber
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna General Hospital, Austria
| | - J Menger
- Division of Cardiothoracic and Vascular Anaesthesia and Intensive Care Medicine, Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna General Hospital, Austria
| | - K Skhirtladze-Dworschak
- Division of Cardiothoracic and Vascular Anaesthesia and Intensive Care Medicine, Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna General Hospital, Austria
| | - F Sterz
- Department of Emergency Medicine, Medical University of Vienna, Vienna General Hospital, Austria
| | - M Dworschak
- Division of Cardiothoracic and Vascular Anaesthesia and Intensive Care Medicine, Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna General Hospital, Austria.
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Cournoyer A, Iseppon M, Chauny JM, Denault A, Cossette S, Notebaert É. Near-infrared Spectroscopy Monitoring During Cardiac Arrest: A Systematic Review and Meta-analysis. Acad Emerg Med 2016; 23:851-62. [PMID: 27028004 DOI: 10.1111/acem.12980] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/05/2016] [Accepted: 03/28/2016] [Indexed: 12/29/2022]
Abstract
BACKGROUND Tissue oximetry using near-infrared spectroscopy (NIRS) is a noninvasive monitor of cerebral oxygenation. This new technology has been used during cardiac arrest (CA) because of its ability to give measures in low-blood-flow situations. The aim of this study was to assess the evidence regarding the association between the types of NIRS measurements (mean, initial, and highest values) and resuscitation outcomes (return of spontaneous circulation [ROSC], survival to discharge, and good neurologic outcome) in patients undergoing cardiopulmonary resuscitation. METHODS This review was registered (Prospero CRD42015017380) and is reported as per the PRISMA guidelines. Medline, Embase, and CENTRAL were searched. All studies, except case reports and case series of fewer than five patients, reporting on adults that had NIRS monitoring during CA were eligible for inclusion. Two reviewers assessed the quality of the included articles and extracted the data. The outcome effect was standardized using standardized mean difference (SMD). RESULTS Twenty nonrandomized observational studies (15 articles and five conference abstracts) were included in this review, for a total of 2,436 patients. We found a stronger association between ROSC and mean NIRS values (SMD = 1.33; 95% confidence interval [CI] = 0.92 to 1.74) than between ROSC and initial NIRS measurements (SMD = 0.51; 95% CI = 0.23 to 0.78). There was too much heterogeneity among the highest NIRS measurements group to perform meta-analysis. Only two of the 75 patients who experienced ROSC had a mean NIRS saturation under 30%. Patients who survived to discharge and who had good neurologic outcome displayed superior combined initial and mean NIRS values than their counterparts (SMD = 1.63; 95% CI = 1.34 to 1.92; and SMD = 2.12; 95% CI = 1.14 to 3.10). CONCLUSIONS Patients with good resuscitation outcomes have significantly higher NIRS saturations during resuscitation than their counterparts. The types of NIRS measurements during resuscitation influenced the association between ROSC and NIRS saturation. Prolonged failure to obtain a NIRS saturation higher than 30% may be included in a multimodal approach to the decision of terminating resuscitation efforts (Class IIb, Level of Evidence C-Limited Data).
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Affiliation(s)
| | | | - Jean-Marc Chauny
- Université de Montréal; Montréal Québec
- Hôpital du Sacré-Cœur de Montréal; Montréal Québec
| | - André Denault
- Université de Montréal; Montréal Québec
- Montreal Heart Institute; Montréal Québec
- Centre Hospitalier de l'Université de Montréal; Montréal Québec
| | - Sylvie Cossette
- Université de Montréal; Montréal Québec
- Montreal Heart Institute; Montréal Québec
| | - Éric Notebaert
- Université de Montréal; Montréal Québec
- Hôpital du Sacré-Cœur de Montréal; Montréal Québec
- Cité de la Santé de Laval; Montréal Québec Canada
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16
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Near-infrared spectroscopy during cardiopulmonary resuscitation and after restoration of spontaneous circulation. Curr Opin Crit Care 2016; 22:191-8. [DOI: 10.1097/mcc.0000000000000301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Vahedian-Azimi A, Hajiesmaeili M, Amirsavadkouhi A, Jamaati H, Izadi M, Madani SJ, Hashemian SMR, Miller AC. Effect of the Cardio First Angel™ device on CPR indices: a randomized controlled clinical trial. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:147. [PMID: 27184664 PMCID: PMC4869179 DOI: 10.1186/s13054-016-1296-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 04/13/2016] [Indexed: 11/11/2022]
Abstract
Background A number of cardiopulmonary resuscitation (CPR) adjunct devices have been developed to improve the consistency and quality of manual chest compressions. We investigated whether a CPR feedback device would improve CPR quality and consistency, as well as patient survival. Methods We conducted a randomized controlled study of patients undergoing CPR for cardiac arrest in the mixed medical-surgical intensive care units of four academic teaching hospitals. Patients were randomized to receive either standard manual CPR or CPR using the Cardio First Angel™ CPR feedback device. Recorded variables included guideline adherence, CPR quality, return of spontaneous circulation (ROSC) rates, and CPR-associated morbidity. Results A total of 229 subjects were randomized; 149 were excluded; and 80 were included. Patient demographics were similar. Adherence to published CPR guidelines and CPR quality was significantly improved in the intervention group (p < 0.0001), as were ROSC rates (72 % vs. 35 %; p = 0.001). A significant decrease was observed in rib fractures (57 % vs. 85 %; p = 0.02), but not sternum fractures (5 % vs. 17 %; p = 0.15). Conclusions Use of the Cardio First Angel™ CPR feedback device improved adherence to published CPR guidelines and CPR quality, and it was associated with increased rates of ROSC. A decrease in rib but not sternum fractures was observed with device use. Further independent prospective validation is warranted to determine if these results are reproducible in other acute care settings. Trial registration ClinicalTrials.gov identifier: NCT02394977. Registered on 5 Mar 2015.
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Affiliation(s)
- Amir Vahedian-Azimi
- Trauma Research Center and Nursing Faculty, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Hajiesmaeili
- Loghman Clinical Research Development Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Hamidreza Jamaati
- Tobacco Prevention and Control Research Center, National Research Institute of Tuberculosis and Lung Diseases, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Morteza Izadi
- Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Seyed J Madani
- Trauma Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Seyed M R Hashemian
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Andrew C Miller
- Department of Emergency Medicine, West Virginia University School of Medicine, 1 Medical Center Drive, Morgantown, WV, 26506-9149, USA.
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Talikowska M, Tohira H, Bailey P, Finn J. Cardiopulmonary resuscitation quality: Widespread variation in data intervals used for analysis. Resuscitation 2016; 102:25-8. [DOI: 10.1016/j.resuscitation.2016.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 12/30/2015] [Accepted: 02/06/2016] [Indexed: 11/26/2022]
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19
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Storm C, Wutzler A, Trenkmann L, Krannich A, von Rheinbarben S, Luckenbach F, Nee J, Otto N, Schroeder T, Leithner C. Good neurological outcome despite very low regional cerebral oxygen saturation during resuscitation--a prospective preclinical trial in 29 patients. Scand J Trauma Resusc Emerg Med 2016; 24:43. [PMID: 27048406 PMCID: PMC4822235 DOI: 10.1186/s13049-016-0234-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 03/31/2016] [Indexed: 11/12/2022] Open
Abstract
Background Noninvasive regional cerebral oxygen saturation (rSO2) measurement using near-infrared spectroscopy (NIRS) might inform on extent and duration of cerebral hypoxia during cardiopulmonary resuscitation (CPR). This information may be used to guide resuscitation efforts and may carry relevant early prognostic information. Methods We prospectively investigated non-traumatic out-of-hospital cardiac arrest (OHCA) patients on scene. NIRS was started either during CPR or shortly after (<2 min) return of spontaneous circulation (ROSC) by emergency medical service (EMS). Outcome was determined at intensive care unit (ICU) discharge and 6 months after cardiac arrest. Results A total of 29 OHCA patients were included. In 23 patients NIRS was started during CPR and in 6 patients immediately after ROSC. 18 (62.1 %) patients did not reach ROSC. Initial rSO2 during CPR was very low (<50 % in all 23 patients, < 30 % in 19 of 23 patients) with no significant difference between patients achieving ROSC and those who did not. Of five patients with ROSC, in whom NIRS was recorded during CPR, two reached a good six-months outcome (initial rSO2 22 %) and three died during the ICU stay (initial rSO2 15, 16 and 46 %). In six patients with NIRS started immediately after ROSC (<2 min), rSO2 was substantially higher (54–85 %) than in patients during CPR (p = 0.006). Discussion and conclusion Initial frontal brain rSO2 determined by NIRS during CPR was generally very low and recovered rapidly after ROSC. Very low initial rSO2 during CPR was compatible with good neurological outcome in our limited cohort of patients. Further studies are needed to assess in larger cohorts and more detail the implications of very low initial rSO2 during CPR on scene.
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Affiliation(s)
- Christian Storm
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany.
| | - Alexander Wutzler
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Lars Trenkmann
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Alexander Krannich
- Department of Biostatistics, Berlin Institute of Health, Clinical Research Unit, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Sabrina von Rheinbarben
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Fridolin Luckenbach
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Jens Nee
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Natalie Otto
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Tim Schroeder
- Department of Internal Medicine, Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
| | - Christoph Leithner
- Department of Neurology, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353, Berlin, Germany
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20
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Genbrugge C, Dens J, Meex I, Boer W, Eertmans W, Sabbe M, Jans F, De Deyne C. Regional Cerebral Oximetry During Cardiopulmonary Resuscitation: Useful or Useless? J Emerg Med 2016; 50:198-207. [DOI: 10.1016/j.jemermed.2015.03.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/16/2015] [Accepted: 03/14/2015] [Indexed: 11/29/2022]
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21
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Ogawa Y, Shiozaki T, Hirose T, Ohnishi M, Nakamori Y, Ogura H, Shimazu T. Load-distributing-band cardiopulmonary resuscitation for out-of-hospital cardiac arrest increases regional cerebral oxygenation: a single-center prospective pilot study. Scand J Trauma Resusc Emerg Med 2015; 23:99. [PMID: 26568325 PMCID: PMC4644276 DOI: 10.1186/s13049-015-0182-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 11/07/2015] [Indexed: 11/10/2022] Open
Abstract
Background Despite advances in therapeutic strategies and improved guidelines, morbidity and mortality rates for out-of-hospital cardiac arrest (OHCA) remain high. Especially, neurological prognosis is one of the most important problems even though brain protection therapy for patients with OHCA has improved greatly in recent years due to the development of emergency post-cardiac arrest interventions such as mild therapeutic hypothermia, early percutaneous coronary intervention, and extracorporeal cardiopulmonary resuscitation (CPR). Recently, cerebral regional oxygen saturation (rSO2) has received attention as a method for evaluation of cerebral oxygenation. We have reported that conventional chest compression did not improve the rSO2 of cardiac arrest patients if they did not achieve return of spontaneous circulation. It is, however, unclear whether a mechanical CPR device is helpful in improving rSO2. The purpose of this study was to evaluate the effects of load-distributing-band CPR (LDB-CPR) on rSO2. Methods In this prospective study, LDB-CPR was begun for OHCA with the AutoPulseTM device on patient arrival at hospital. During mechanical CPR, rSO2 values were recorded continuously from the forehead of the patients. CPR for patients with OHCA was performed according to the Japan Resuscitation Council Guidelines 2010 except for using the AutoPulseTM instead of manual chest compression. Results From December 2012 to December 2013, 34 patients (mean age, 75.6 ± 12.8 years) with OHCA were included in this study. Duration of time from recognition of cardiac collapse to arrival to hospital was 31.0 ± 11.4 min. Compared with the rSO2 value of 38.9 ± 0.7 % prior to starting LDB-CPR, rSO2 values at 4, 8 and 12 minutes increased significantly after initiation of LDB-CPR (44.0 ± 0.9 %, 45.2 ± 0.8 %, and 45.5 ± 0.8 %, respectively, p < 0.05). Conclusion LDB-CPR significantly increased the rSO2 of cardiac arrest patients during resuscitation.
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Affiliation(s)
- Yoshihito Ogawa
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Tadahiko Shiozaki
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Tomoya Hirose
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Mitsuo Ohnishi
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Yasushi Nakamori
- Department of Emergency and Critical Care Medicine, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka, 570-8507, Japan.
| | - Hiroshi Ogura
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Takeshi Shimazu
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Ni C, Xu T, Li N, Tian Y, Han Y, Xue Q, Li M, Guo X. Cerebral oxygen saturation after multiple perioperative influential factors predicts the occurrence of postoperative cognitive dysfunction. BMC Anesthesiol 2015; 15:156. [PMID: 26503361 PMCID: PMC4624171 DOI: 10.1186/s12871-015-0117-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 10/01/2015] [Indexed: 01/18/2023] Open
Abstract
Background Postoperative cognitive dysfunction (POCD) is a frequent complication in elderly patients undergoing major non-cardiac surgery, but its etiology is still unclear. Cerebral oxygen saturation (ScO2) represents the balance of cerebral oxygen supply and demand. The aim of present study was to evaluate the relationship between perioperative ScO2 and POCD, and to verify the hypothesis that the value of ScO2 after multiple perioperative influential factors could predict POCD in elderly patients undergoing total knee arthroplasty (TKA). Methods Seventy eight Patients aged more than 65 years undergoing elective TKA with intrathecal anesthesia were enrolled. Cognitive functions were assessed one day before and 6 days after surgery, and POCD were defined according to ISPOCD. Demographics were recorded. Perioperative ScO2, blood pressure (BP), blood gas analysis and other clinical data were monitored and recorded, then the decrease of ScO2, BP and PaO2 after influential factors were calculated. Results POCD occurred in 15 patients (19.2 %). BP decreased after anesthesia induction and tourniquet deflation, and PaO2 decreased after cement implantation, then percentage decrease of BP was higher in POCD group. ScO2 of POCD group is significantly lower than non-POCD group (P < 0.05), and the absolute value and percentage decrease of ScO2 became significant between two groups after multiple influential factors. ScO2 after all influential factors (anesthesia induction, cement implantation and tourniquet deflation) had the best predictive performance for POCD (AUC = 0.742), and the optimal threshold was 66.5 %. Conclusions Perioperative ScO2 of patients with POCD is lower than patients without POCD. ScO2 after multiple perioperative influential factors could be an effective predictor for POCD, which reveal an important role of ScO2 decrease in the development of POCD and provide possible treatment target.
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Affiliation(s)
- Cheng Ni
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Ting Xu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Nan Li
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, 100191, China
| | - Yang Tian
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Yongzheng Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Qingsheng Xue
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Min Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China.
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Sanfilippo F, Serena G, Corredor C, Benedetto U, Maybauer MO, Al-Subaie N, Madden B, Oddo M, Cecconi M. Cerebral oximetry and return of spontaneous circulation after cardiac arrest: A systematic review and meta-analysis. Resuscitation 2015; 94:67-72. [DOI: 10.1016/j.resuscitation.2015.06.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/18/2015] [Accepted: 06/24/2015] [Indexed: 01/23/2023]
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24
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Talikowska M, Tohira H, Finn J. Cardiopulmonary resuscitation quality and patient survival outcome in cardiac arrest: A systematic review and meta-analysis. Resuscitation 2015; 96:66-77. [PMID: 26247143 DOI: 10.1016/j.resuscitation.2015.07.036] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 07/10/2015] [Accepted: 07/25/2015] [Indexed: 11/25/2022]
Abstract
AIM To conduct a systematic review and meta-analysis to determine whether cardiopulmonary resuscitation (CPR) quality, as indicated by parameters such as chest compression depth, compression rate and compression fraction, is associated with patient survival from cardiac arrest. METHODS Five databases were searched (MEDLINE, Embase, CINAHL, Scopus and Cochrane) as well as the grey literature (MedNar). To satisfy inclusion criteria, studies had to document human cases of in- or out-of hospital cardiac arrest where CPR quality had been recorded using an automated device and linked to patient survival. Where indicated (I(2)<75%), meta-analysis was undertaken to examine the relationship between individual CPR quality parameters and either survival to hospital discharge (STHD) or return of spontaneous circulation (ROSC). RESULTS Database searching yielded 8,842 unique citations, resulting in the inclusion of 22 relevant articles. Thirteen were included in the meta-analysis. Chest compression depth was significantly associated with STHD (mean difference (MD) between survivors and non-survivors 2.59 mm, 95% CI: 0.71, 4.47); and with ROSC (MD 0.99 mm, 95% CI: 0.04, 1.93). Within the range of approximately 100-120 compressions per minute (cpm), compression rate was significantly associated with STHD; survivors demonstrated a lower mean compression rate than non-survivors (MD -1.17 cpm, 95% CI: -2.21, -0.14). Compression fraction could not be examined by meta-analysis due to high heterogeneity, however a higher fraction appeared to be associated with survival in cases with a shockable initial rhythm. CONCLUSIONS Chest compression depth and rate were associated with survival outcomes. More studies with consistent reporting of data are required for other quality parameters.
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Affiliation(s)
- Milena Talikowska
- Prehospital, Resuscitation and Emergency Care Research Unit (PRECRU), School of Nursing, Midwifery and Paramedicine, Curtin University, Bentley, WA, Australia.
| | - Hideo Tohira
- Prehospital, Resuscitation and Emergency Care Research Unit (PRECRU), School of Nursing, Midwifery and Paramedicine, Curtin University, Bentley, WA, Australia
| | - Judith Finn
- Prehospital, Resuscitation and Emergency Care Research Unit (PRECRU), School of Nursing, Midwifery and Paramedicine, Curtin University, Bentley, WA, Australia; St. John Ambulance, Western Australia, Belmont, WA, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
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Hernández-Padilla JM, Suthers F, Granero-Molina J, Fernández-Sola C. Effects of two retraining strategies on nursing students' acquisition and retention of BLS/AED skills: A cluster randomised trial. Resuscitation 2015; 93:27-34. [PMID: 26026776 DOI: 10.1016/j.resuscitation.2015.05.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/23/2015] [Accepted: 05/15/2015] [Indexed: 11/17/2022]
Abstract
AIM To determine and compare the effects of two different retraining strategies on nursing students' acquisition and retention of BLS/AED skills. METHODS Nursing students (N = 177) from two European universities were randomly assigned to either an instructor-directed (IDG) or a student-directed (SDG) 4-h retraining session in BLS/AED. A multiple-choice questionnaire, the Cardiff Test, Laerdal SkillReporter(®) software and a self-efficacy scale were used to assess students' overall competency (knowledge, psychomotor skills and self-efficacy) in BLS/AED at pre-test, post-test and 3-month retention-test. GEE, chi-squared and McNemar tests were performed to examine statistical differences amongst groups across time. RESULTS There was a significant increase in the proportion of students who achieved competency for all variables measuring knowledge, psychomotor skills and self-efficacy between pre-test and post-test in both groups (all p-values<0.05). However, at post-test, significantly more students in the SDG achieved overall BLS/AED competency when compared to IDG. In terms of retention at 3 months, success rates of students within the IDG deteriorated significantly for all variables except ≥ 70% of chest compressions with correct hand position (p-value = 0.12). Conversely, the proportion of students who achieved competency within the SDG only decreased significantly in 'mean no flow-time ≤ 5s' (p-value = 0.02). Furthermore, differences between groups' success rates at retention-test also proved to be significantly different for all variables measured (all p-values < 0.05). CONCLUSION This study demonstrated that using a student-directed strategy to retrain BLS/AED skills has resulted in a higher proportion of nursing students achieving and retaining competency in BLS/AED at three months when compared to an instructor-directed strategy.
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Affiliation(s)
- José Manuel Hernández-Padilla
- Associate Lecturer in Clinical Skills. Adult, Child and Midwifery Department. School of Health and Education. Middlesex University. Hendon Campus. The Burroughs, NW4 4BT, London, United Kingdom.
| | - Fiona Suthers
- Senior Lecturer in Resuscitation. Adult, Child and Midwifery Department. School of Health and Education. Middlesex University. Postal address: The Burroughs, NW4 4BT, Hendon, London, United Kingdom
| | - José Granero-Molina
- Senior Lecturer. Nursing, Physiotherapy and Medicine Department. Faculty of Education Sciences, Nursing and Physiotherapy. University of Almeria. Spain. Postal address: Universidad de Almería. Edificio de Ciencias de la Salud. Carretera de Sacramento s/n. Almería. CP: 04120. Spain; Associate Researcher. Faculty of Health Sciences. Universidad Autónoma de Chile. Temuco, Chile
| | - Cayetano Fernández-Sola
- Senior Lecturer. Nursing, Physiotherapy and Medicine Department. Faculty of Education Sciences, Nursing and Physiotherapy. University of Almeria. Spain. Postal address: Universidad de Almería. Edificio de Ciencias de la Salud. Carretera de Sacramento s/n. Almería. CP: 04120. Spain; Associate Researcher. Faculty of Health Sciences. Universidad Autónoma de Chile. Temuco, Chile
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Wally D, Velik-Salchner C. [Near-infrared spectroscopy during cardiopulmonary resuscitation and mechanical circulatory support: From the operating room to the intensive care unit]. Med Klin Intensivmed Notfmed 2015; 110:621-30. [PMID: 25917180 DOI: 10.1007/s00063-015-0012-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 01/07/2015] [Accepted: 01/13/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Near infrared spectroscopy (NIRS) allows continuous measurement of cerebral regional oxygen saturation (rSO2). It is a weighted saturation value derived from approximately 70-75 % venous, 20-25 % arterial and 2.5-5 % capillary blood. In contrast to pulse oximetry, NIRS is independent of pulsatile flow. Therefore, it is also applicable during extracorporeal circulation, cardiopulmonary resuscitation (CPR), and hypothermia. OBJECTIVES The purpose of this work is to describe the application of cerebral and somatic NIRS in cardiology and cardiac surgery patients in the operation room, during and after CPR, and during the intensive care unit stay. MATERIALS AND METHODS This article is based on peer-reviewed literature from PubMed. RESULTS Interventions based on decline of cerebral NIRS values during on-pump cardiac surgery can reduce major organ morbidity and mortality; however, the appearance of a postoperative cognitive dysfunction is scarcely influenced. Persisting of low cerebral oximetry values during resuscitation is a marker for not achieving return of spontaneous circulation under normothermia. NIRS is an additional method for monitoring that can be used during extracorporeal circulation. CONCLUSION NIRS is a rapidly available, user-friendly, and noninvasive method for continuous measurement of rSO2. NIRS provides additional information about tissue oxygenation especially during resuscitation and extracorporeal circulatory assist support. Recommendations concerning the use of NIRS for standard monitoring during resuscitation and mechanical circulatory support are not currently available. Further studies are required to show if use of NIRS can reduce pulse control and hands-off times during resuscitation and if use of NIRS can improve outcome after CPR and mechanical circulatory support.
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Affiliation(s)
- D Wally
- Universitätsklinik für Anästhesie und Intensivmedizin, Department für Operative Medizin, Medizinische Universität Innsbruck, Anichstr. 35, 6020, Innsbruck, Österreich
| | - Corinna Velik-Salchner
- Universitätsklinik für Anästhesie und Intensivmedizin, Department für Operative Medizin, Medizinische Universität Innsbruck, Anichstr. 35, 6020, Innsbruck, Österreich.
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Abdominal oxygen saturation for monitoring return of spontaneous circulation in out-of-hospital cardiac arrest using near infrared spectrophometry. Am J Emerg Med 2015; 33:344-8. [DOI: 10.1016/j.ajem.2014.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/19/2014] [Accepted: 11/21/2014] [Indexed: 11/18/2022] Open
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Hernández-Padilla J, Suthers F, Fernández-Sola C, Granero-Molina J. Development and psychometric assessment of the Basic Resuscitation Skills Self-Efficacy Scale. Eur J Cardiovasc Nurs 2014; 15:e10-8. [DOI: 10.1177/1474515114562130] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 11/11/2014] [Indexed: 11/17/2022]
Affiliation(s)
- Jose Hernández-Padilla
- Adult, Child and Midwifery Department, School of Health and Education, Middlesex University, London, UK
| | - Fiona Suthers
- Adult, Child and Midwifery Department, School of Health and Education, Middlesex University, London, UK
| | - Cayetano Fernández-Sola
- Nursing, Physiotherapy and Medicine Department. Faculty of Education Sciences, Nursing and Physiotherapy, University of Almeria, Spain
- Associate Researcher, Faculty of Health Sciences, Universidad Autónoma de Chile, Temuco, Chile
| | - Jose Granero-Molina
- Nursing, Physiotherapy and Medicine Department. Faculty of Education Sciences, Nursing and Physiotherapy, University of Almeria, Spain
- Associate Researcher, Faculty of Health Sciences, Universidad Autónoma de Chile, Temuco, Chile
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Wijshoff RWCGR, van Asten AMTM, Peeters WH, Bezemer R, Noordergraaf GJ, Mischi M, Aarts RM. Photoplethysmography-based algorithm for detection of cardiogenic output during cardiopulmonary resuscitation. IEEE Trans Biomed Eng 2014; 62:909-21. [PMID: 25415981 DOI: 10.1109/tbme.2014.2370649] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Detecting return of spontaneous circulation (ROSC) during cardiopulmonary resuscitation (CPR) is challenging, time consuming, and requires interrupting chest compressions. Based on automated-CPR porcine data, we have developed an algorithm to support ROSC detection, which detects cardiogenic output during chest compressions via a photoplethysmography (PPG) signal. The algorithm can detect palpable and impalpable spontaneous pulses. A compression-free PPG signal which estimates the spontaneous pulse waveform, was obtained by subtracting the compression component, modeled by a harmonic series. The fundamental frequency of this series was the compression rate derived from the transthoracic impedance signal measured between the defibrillation pads. The amplitudes of the harmonic components were obtained via a least mean-square algorithm. The frequency spectrum of the compression-free PPG signal was estimated via an autoregressive model, and the relationship between the spectral peaks was analyzed to identify the pulse rate (PR). Resumed cardiogenic output could also be detected from a decrease in the baseline of the PPG signal, presumably caused by a redistribution of blood volume to the periphery. The algorithm indicated cardiogenic output when a PR or a redistribution of blood volume was detected. The algorithm indicated cardiogenic output with 94% specificity and 69% sensitivity compared to the retrospective ROSC detection of nine clinicians. Results showed that ROSC detection can be supported by combining the compression-free PPG signal with an indicator based on the detected PR and redistribution of blood volume.
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Schewe JC, Thudium MO, Kappler J, Steinhagen F, Eichhorn L, Erdfelder F, Heister U, Ellerkmann R. Monitoring of cerebral oxygen saturation during resuscitation in out-of-hospital cardiac arrest: a feasibility study in a physician staffed emergency medical system. Scand J Trauma Resusc Emerg Med 2014; 22:58. [PMID: 25286829 PMCID: PMC4196010 DOI: 10.1186/s13049-014-0058-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 09/29/2014] [Indexed: 11/10/2022] Open
Abstract
Background Despite recent advances in resuscitation algorithms, neurological injury after cardiac arrest due to cerebral ischemia and reperfusion is one of the reasons for poor neurological outcome. There is currently no adequate means of measuring cerebral perfusion during cardiac arrest. It was the aim of this study to investigate the feasibility of measuring near infrared spectroscopy (NIRS) as a potential surrogate parameter for cerebral perfusion in patients with out-of-hospital resuscitations in a physician-staffed emergency medical service. Methods An emergency physician responding to out-of-hospital emergencies was equipped with a NONIN cerebral oximetry device. Cerebral oximetry values (rSO2) were continuously recorded during resuscitation and transport. Feasibility was defined as >80% of total achieved recording time in relation to intended recording time. Results 10 patients were prospectively enrolled. In 89.8% of total recording time, rSO2 values could be recorded (213 minutes and 20 seconds), thus meeting feasibility criteria. 3 patients experienced return of spontaneous circulation (ROSC). rSO2 during manual cardiopulmonary resuscitation (CPR) was lower in patients who did not experience ROSC compared to the 3 patients with ROSC (31.6%, ± 7.4 versus 37.2% ± 17.0). ROSC was associated with an increase in rSO2. Decrease of rSO2 indicated occurrence of re-arrest in 2 patients. In 2 patients a mechanical chest compression device was used. rSO2 values during mechanical compression were increased by 12.7% and 19.1% compared to manual compression. Conclusions NIRS monitoring is feasible during resuscitation of patients with out-of-hospital cardiac arrest and can be a useful tool during resuscitation, leading to an earlier detection of ROSC and re-arrest. Higher initial rSO2 values during CPR seem to be associated with the occurrence of ROSC. The use of mechanical chest compression devices might result in higher rSO2. These findings need to be confirmed by larger studies.
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Affiliation(s)
| | - Marcus O Thudium
- Department of Anaesthesiology, University of Bonn Medical Center, Sigmund-Freud-Str, 25, Bonn, 53105, Germany.
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Re: A pilot study examining the role of regional cerebral oxygen saturation monitoring as a marker of return of spontaneous circulation in shockable (VF/VT) and non-shockable (PEA/Asystole) causes of cardiac arrest. Resuscitation 2014; 85:e121-2. [PMID: 24704112 DOI: 10.1016/j.resuscitation.2014.02.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 02/23/2014] [Indexed: 11/22/2022]
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Cerebral Oximetry During Cardiac Arrest—Feasible, But Benefit Yet to Be Determined*. Crit Care Med 2014; 42:1001-2. [DOI: 10.1097/ccm.0000000000000092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Camp-Rogers T, Sawyer KN. Non-invasive monitoring during cardiac arrest: NIRS has potential but data remain limited. Resuscitation 2013; 84:1643-4. [PMID: 24210221 DOI: 10.1016/j.resuscitation.2013.09.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 09/19/2013] [Indexed: 10/26/2022]
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Koyama Y, Wada T, Lohman BD, Takamatsu Y, Matsumoto J, Fujitani S, Taira Y. A new method to detect cerebral blood flow waveform in synchrony with chest compression by near-infrared spectroscopy during CPR. Am J Emerg Med 2013; 31:1504-8. [PMID: 23969279 DOI: 10.1016/j.ajem.2013.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 07/01/2013] [Accepted: 07/04/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE The objective of the study is to demonstrate the utility of near-infrared spectroscopy (NIRS) in evaluating chest compression (CC) quality in cardiac arrest (CA) patients as well as determine its prognosis predictive value. METHODS We present a nonconsecutive case series of adult patients with CA whose cardiopulmonary resuscitation (CPR) was monitored with NIRS and collected the total hemoglobin concentration change (ΔcHb), the tissue oxygen index (TOI), and the ΔTOI to assess CC quality in a noninvasive fashion. RESULTS During CPR, ΔcHb displayed waveforms monitor, which we regarded as a surrogate for CC quality. Total hemoglobin concentration change waveforms responded accurately to variations or cessations of CCs. In addition, a TOI greater than 40% measured upon admission appears to be significant in predicting patient's outcome. Of 15 patients, 6 had a TOI greater than 40% measured upon admission, and 67% of the latter were in return of spontaneous circulation after CPR and were found to be significantly different between return of spontaneous circulation and death (P = .047; P < .05). CONCLUSION Near-infrared spectroscopy reliably assesses the quality of CCs in patients with CA demonstrated by synchronous waveforms during CPR and possible prognostic predictive value, although further investigation is warranted.
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Affiliation(s)
- Yasuaki Koyama
- Departments of Emergency and Critical Care Medicine, St Marianna University School of Medicine, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511, Japan.
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Wijshoff RWCGR, van der Sar T, Peeters WH, Bezemer R, Aelen P, Paulussen IWF, Ordelman SCMA, Venema A, van Berkom PFJ, Aarts RM, Woerlee PH, Scheffer GJ, Noordergraaf GJ. Detection of a spontaneous pulse in photoplethysmograms during automated cardiopulmonary resuscitation in a porcine model. Resuscitation 2013; 84:1625-32. [PMID: 23907100 DOI: 10.1016/j.resuscitation.2013.07.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/10/2013] [Accepted: 07/23/2013] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Reliable, non-invasive detection of return of spontaneous circulation (ROSC) with minimal interruptions to chest compressions would be valuable for high-quality cardiopulmonary resuscitation (CPR). We investigated the potential of photoplethysmography (PPG) to detect the presence of a spontaneous pulse during automated CPR in an animal study. METHODS Twelve anesthetized pigs were instrumented to monitor circulatory and respiratory parameters. Here we present the simultaneously recorded PPG and arterial blood pressure (ABP) signals. Ventricular fibrillation was induced, followed by 20 min of automated CPR and subsequent defibrillation. After defibrillation, pediatric-guidelines-style life support was given in cycles of 2 min. PPG and ABP waveforms were recorded during all stages of the protocol. Raw PPG waveforms were acquired with a custom-built photoplethysmograph controlling a commercial reflectance pulse oximetry probe attached to the nose. ABP was measured in the aorta. RESULTS In nine animals ROSC was achieved. Throughout the protocol, PPG and ABP frequency content showed strong resemblance. We demonstrate that (1) the PPG waveform allows for the detection of a spontaneous pulse during ventilation pauses, and that (2) frequency analysis of the PPG waveform allows for the detection of a spontaneous pulse and the determination of the pulse rate, even during ongoing chest compressions, if the pulse and compression rates are sufficiently distinct. CONCLUSIONS These results demonstrate the potential of PPG as a non-invasive means to detect pulse presence or absence, as well as pulse rate during CPR.
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Affiliation(s)
- Ralph W C G R Wijshoff
- Signal Processing Systems, Department of Electrical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands.
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Skhirtladze-Dworschak K, Dworschak M. Cerebral oximetry and cardiac arrest. Semin Cardiothorac Vasc Anesth 2013; 17:269-75. [PMID: 23782549 DOI: 10.1177/1089253213492861] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cerebral oximetry is a Food and Drug Administration-approved technology that allows monitoring of brain oxygen saturation in accessible superficial brain cortex regions, which are amongst the most vulnerable in regard to ischemic or hypoxic injury. Since most oxygen in the area of interest is located in the venous compartment, the determined regional brain oxygen saturation approximately reflects the local balance between oxygen delivery and oxygen consumption. Major systemic alterations in blood oxygen content and oxygen delivery will be accompanied by corresponding changes in regional brain saturation. This systematic review, which is based on a Medline search, focuses on the characteristic changes in regional cerebral oxygen saturation that occur, when global oxygen supply to the brain ceases. It further highlights the potential application of cerebral oximetry in the management of cardiac arrest victims, the predictability of clinical outcome after global cerebral ischemia, and it also indicates possible potentials for the management of cerebral reperfusion after having instituted return of spontaneous circulation.
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Cerebral tissue oxygen saturation during therapeutic hypothermia in post-cardiac arrest patients. Resuscitation 2013; 84:788-93. [DOI: 10.1016/j.resuscitation.2013.01.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/20/2012] [Accepted: 01/01/2013] [Indexed: 11/23/2022]
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Meex I, De Deyne C, Dens J, Scheyltjens S, Lathouwers K, Boer W, Vundelinckx G, Heylen R, Jans F. Feasibility of absolute cerebral tissue oxygen saturation during cardiopulmonary resuscitation. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2013; 17:R36. [PMID: 23448653 PMCID: PMC3672653 DOI: 10.1186/cc12546] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 02/26/2013] [Indexed: 11/10/2022]
Abstract
Introduction Current monitoring during cardiopulmonary resuscitation (CPR) is limited to clinical observation of consciousness, breathing pattern and presence of a pulse. At the same time, the adequacy of cerebral oxygenation during CPR is critical for neurological outcome and thus survival. Cerebral oximetry, based on near-infrared spectroscopy (NIRS), provides a measure of brain oxygen saturation. Therefore, we examined the feasibility of using NIRS during CPR. Methods Recent technologies (FORE-SIGHT™ and EQUANOX™) enable the monitoring of absolute cerebral tissue oxygen saturation (SctO2) values without the need for pre-calibration. We tested both FORE-SIGHT™ (five patients) and EQUANOX Advance™ (nine patients) technologies in the in-hospital as well as the out-of-hospital CPR setting. In this observational study, values were not utilized in any treatment protocol or therapeutic decision. An independent t-test was used for statistical analysis. Results Our data demonstrate the feasibility of both technologies to measure cerebral oxygen saturation during CPR. With the continuous, pulseless near-infrared wave analysis of both FORE-SIGHT™ and EQUANOX™ technology, we obtained SctO2 values in the absence of spontaneous circulation. Both technologies were able to assess the efficacy of CPR efforts: improved resuscitation efforts (improved quality of chest compressions with switch of caregivers) resulted in higher SctO2 values. Until now, the ability of CPR to provide adequate tissue oxygenation was difficult to quantify or to assess clinically due to a lack of specific technology. With both technologies, any change in hemodynamics (for example, ventricular fibrillation) results in a reciprocal change in SctO2. In some patients, a sudden drop in SctO2 was the first warning sign of reoccurring ventricular fibrillation. Conclusions Both the FORE-SIGHT™ and EQUANOX™ technology allow non-invasive monitoring of the cerebral oxygen saturation during CPR. Moreover, changes in SctO2 values might be used to monitor the efficacy of CPR efforts.
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Nolan JP, Ornato JP, Parr MJ, Perkins GD, Soar J. Resuscitation highlights in 2012. Resuscitation 2013; 84:129-36. [DOI: 10.1016/j.resuscitation.2013.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 01/02/2013] [Indexed: 12/19/2022]
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Gruber J, Stumpf D, Zapletal B, Neuhold S, Fischer H. Real-time feedback systems in CPR. TRENDS IN ANAESTHESIA AND CRITICAL CARE 2012. [DOI: 10.1016/j.tacc.2012.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Affiliation(s)
- Douglas J A Brown
- Department of Emergency Medicine, University of British Columbia, Vancouver General Hospital, Vancouver, BC V5Z 1M9, Canada.
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Abstract
The best chance of survival with a good neurological outcome after cardiac arrest is afforded by early recognition and high-quality cardiopulmonary resuscitation (CPR), early defibrillation of ventricular fibrillation (VF), and subsequent care in a specialist center. Compression-only CPR should be used by responders who are unable or unwilling to perform mouth-to-mouth ventilations. After the first defibrillator shock, further rhythm checks and defibrillation attempts should be performed after 2 min of CPR. The underlying cause of cardiac arrest can be identified and treated during CPR. Drugs have a limited effect on long-term outcomes after cardiac arrest, although epinephrine improves the success of resuscitation, and amiodarone increases the success of defibrillation for refractory VF. Supraglottic airway devices are an alternative to tracheal intubation, which should be attempted only by skilled rescuers. Care after cardiac arrest includes controlled reoxygenation, therapeutic hypothermia for comatose survivors, percutaneous coronary intervention, circulatory support, and control of blood-glucose levels and seizures. Prognostication in comatose survivors of cardiac arrest needs a careful, multimodal approach using clinical and electrophysiological assessments after at least 72 h.
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Affiliation(s)
- Jerry P Nolan
- Anaesthesia and Intensive Care Medicine, Royal United Hospital, Combe Park, Bath BA1 3NG, UK
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