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Ma L, Ryu J, Awad H, McQueary M, Anam K. Pro: Is the Radial Artery the Ideal Location for Invasive Blood Pressure Monitoring In Cardiac Surgery? J Cardiothorac Vasc Anesth 2024:S1053-0770(24)00576-7. [PMID: 39294066 DOI: 10.1053/j.jvca.2024.08.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/30/2024] [Accepted: 08/26/2024] [Indexed: 09/20/2024]
Affiliation(s)
- Louis Ma
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Jasmine Ryu
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Hamdy Awad
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH.
| | - Morgan McQueary
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Karina Anam
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH
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Marges OM, Nieboer JP, de Keijzer IN, Rettab R, van Amsterdam K, Scheeren TWL, Absalom ARA, Vereecke HEM, Struys MMRF, Vos JJ, van den Berg JP. Comparing the haemodynamic effects of high- and low-dose opioid anaesthesia: a secondary analysis of a randomised controlled trial. J Clin Monit Comput 2024:10.1007/s10877-024-01195-6. [PMID: 39031233 DOI: 10.1007/s10877-024-01195-6] [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: 03/13/2024] [Accepted: 07/08/2024] [Indexed: 07/22/2024]
Abstract
Post-induction hypotension (MAP < 65 mmHg) occurs frequently and is usually caused by the cardiovascular adverse effects of the anaesthetic induction drugs used. We hypothesize that a clinically significant difference in the incidence and severity of hypotension will be found when different doses of propofol and remifentanil are used for induction of anaesthesia. METHODS This is a secondary analysis of a randomised controlled trial wherein four groups (A-D) of patients received one out of four different combinations of propofol and remifentanil, titrated to a predicted equipotency in probability of tolerance to laryngoscopy (PTOL) according to the Bouillon interaction model. In group A, a high dose of propofol and a low dose of remifentanil was administered, and across the groups this ratio was gradually changed until it was reversed in group D. Mean and systolic arterial blood pressure (MAP, SAP) were compared at four time points (Tbaseline, Tpost-bolus, T3min, Tnadir) within and between groups Heart rate, bispectral index (BIS) and the incidence of hypotension were compared. RESULTS Data from 76 patients was used. At Tpost-bolus a statistically significant lower MAP and SAP was found in group A versus D (p = 0.011 and p = 0.002). A significant higher heart rate was found at T3min and Tnadir between groups A and B when compared to groups C and D (p = < 0.001 and p = 0.002). A significant difference in BIS value was found over all groups at T3min and Tnadir (both p < 0.001). All other outcomes did not differ significantly between groups. CONCLUSION Induction of anaesthesia with different predicted equipotent combinations of propofol and remifentanil did result in statistically different but clinically irrelevant differences in haemodynamic endpoints during induction of anaesthesia. Our study could not identify preferable drug combinations that decrease the risk for hypotension after induction, although they all yield a similar predicted PTOL.
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Affiliation(s)
- O M Marges
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - J P Nieboer
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - I N de Keijzer
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - R Rettab
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - K van Amsterdam
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - T W L Scheeren
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - A R A Absalom
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - H E M Vereecke
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
- Department of Anaesthesia and Reanimation, AZ Sint-Jan Brugge AV, Bruges, Belgium
| | - M M R F Struys
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
- Department of Anaesthesia and Peri-Operative Medicine, Ghent University, Gent, Belgium
| | - J J Vos
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands
| | - J P van den Berg
- Department of Anaesthesiology, University Medical Centre Groningen, Groningen, Netherlands.
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Kouz K, Thiele R, Michard F, Saugel B. Haemodynamic monitoring during noncardiac surgery: past, present, and future. J Clin Monit Comput 2024; 38:565-580. [PMID: 38687416 PMCID: PMC11164815 DOI: 10.1007/s10877-024-01161-2] [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: 01/31/2024] [Accepted: 04/02/2024] [Indexed: 05/02/2024]
Abstract
During surgery, various haemodynamic variables are monitored and optimised to maintain organ perfusion pressure and oxygen delivery - and to eventually improve outcomes. Important haemodynamic variables that provide an understanding of most pathophysiologic haemodynamic conditions during surgery include heart rate, arterial pressure, central venous pressure, pulse pressure variation/stroke volume variation, stroke volume, and cardiac output. A basic physiologic and pathophysiologic understanding of these haemodynamic variables and the corresponding monitoring methods is essential. We therefore revisit the pathophysiologic rationale for intraoperative monitoring of haemodynamic variables, describe the history, current use, and future technological developments of monitoring methods, and finally briefly summarise the evidence that haemodynamic management can improve patient-centred outcomes.
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Affiliation(s)
- Karim Kouz
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, Hamburg, 20246, Germany
- Outcomes Research Consortium, Cleveland, OH, USA
| | - Robert Thiele
- Department of Anesthesiology, University of Virginia, Charlottesville, VA, USA
| | | | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, Hamburg, 20246, Germany.
- Outcomes Research Consortium, Cleveland, OH, USA.
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Kouz K, Weidemann F, Naebian A, Lohr A, Bergholz A, Thomsen KK, Krause L, Petzoldt M, Moll-Khosrawi P, Sessler DI, Flick M, Saugel B. Continuous Finger-cuff versus Intermittent Oscillometric Arterial Pressure Monitoring and Hypotension during Induction of Anesthesia and Noncardiac Surgery: The DETECT Randomized Trial. Anesthesiology 2023; 139:298-308. [PMID: 37265355 DOI: 10.1097/aln.0000000000004629] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Finger-cuff methods allow noninvasive continuous arterial pressure monitoring. This study aimed to determine whether continuous finger-cuff arterial pressure monitoring helps clinicians reduce hypotension within 15 min after starting induction of anesthesia and during noncardiac surgery. Specifically, this study tested the hypotheses that continuous finger-cuff-compared to intermittent oscillometric-arterial pressure monitoring helps clinicians reduce the area under a mean arterial pressure of 65 mmHg within 15 min after starting induction of anesthesia and the time-weighted average mean arterial pressure less than 65 mmHg during noncardiac surgery. METHODS In this single-center trial, 242 noncardiac surgery patients were randomized to unblinded continuous finger-cuff arterial pressure monitoring or to intermittent oscillometric arterial pressure monitoring (with blinded continuous finger-cuff arterial pressure monitoring). The first of two hierarchical primary endpoints was the area under a mean arterial pressure of 65 mmHg within 15 min after starting induction of anesthesia; the second primary endpoint was the time-weighted average mean arterial pressure less than 65 mmHg during surgery. RESULTS Within 15 min after starting induction of anesthesia, the median (interquartile range) area under a mean arterial pressure of 65 mmHg was 7 (0, 24) mmHg × min in 109 patients assigned to continuous finger-cuff monitoring versus 19 (0.3, 60) mmHg × min in 113 patients assigned to intermittent oscillometric monitoring (P = 0.004; estimated location shift: -6 [95% CI: -15 to -0.3] mmHg × min). During surgery, the median (interquartile range) time-weighted average mean arterial pressure less than 65 mmHg was 0.04 (0, 0.27) mmHg in 112 patients assigned to continuous finger-cuff monitoring and 0.40 (0.03, 1.74) mmHg in 115 patients assigned to intermittent oscillometric monitoring (P < 0.001; estimated location shift: -0.17 [95% CI: -0.41 to -0.05] mmHg). CONCLUSIONS Continuous finger-cuff arterial pressure monitoring helps clinicians reduce hypotension within 15 min after starting induction of anesthesia and during noncardiac surgery compared to intermittent oscillometric arterial pressure monitoring. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Karim Kouz
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friederike Weidemann
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ashkan Naebian
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anneke Lohr
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alina Bergholz
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kristen K Thomsen
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Linda Krause
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Petzoldt
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Parisa Moll-Khosrawi
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Daniel I Sessler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio; and Outcomes Research Consortium, Cleveland, Ohio
| | - Moritz Flick
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; and Outcomes Research Consortium, Cleveland, Ohio
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Chen R, He M, Xiao S, Wang C, Wang H, Xu J, Zhang J, Zhang G. The identification of blood pressure variation with hypovolemia based on the volume compensation method. Front Physiol 2023; 14:1180631. [PMID: 37576345 PMCID: PMC10413875 DOI: 10.3389/fphys.2023.1180631] [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: 03/06/2023] [Accepted: 07/17/2023] [Indexed: 08/15/2023] Open
Abstract
Objective: The purpose of this study is to identify the blood pressure variation, which is important in continuous blood pressure monitoring, especially in the case of low blood volume, which is critical for survival. Methods: A pilot study was conducted to identify blood pressure variation with hypovolemia using five Landrace pigs. New multi-dimensional morphological features of Photoplethysmography (PPG) were proposed based on experimental study of hemorrhagic shock in pigs, which were strongly correlated with blood pressure changes. Five machine learning methods were compared to develop the blood pressure variation identification model. Results: Compared with the traditional blood pressure variation identification model with single characteristic based on single period area of PPG, the identification accuracy of mean blood pressure variation based on the proposed multi-feature random forest model in this paper was up to 90%, which was 17% higher than that of the traditional blood pressure variation identification model. Conclusion: By the proposed multi-dimensional features and the identification method, it is more accurate to detect the rapid variation in blood pressure and to adopt corresponding measures. Significance: Rapid and accurate identification of blood pressure variation under low blood volume ultimately has the potential to effectively avoid complications caused by abnormal blood pressure in patients with clinical bleeding trauma.
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Affiliation(s)
- Ruijuan Chen
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Ming He
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Shumian Xiao
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Cong Wang
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Huiquan Wang
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Jiameng Xu
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Jun Zhang
- School of Life Sciences, TianGong University, Tianjin, China
- Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices, Tianjin, China
| | - Guang Zhang
- Systems Engineering Institute, Academy of Military Sciences, People’s Liberation Army, Tianjin, China
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The Effect of Intermittent versus Continuous Non-Invasive Blood Pressure Monitoring on the Detection of Intraoperative Hypotension, a Sub-Study. J Clin Med 2022; 11:jcm11144083. [PMID: 35887844 PMCID: PMC9321987 DOI: 10.3390/jcm11144083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/26/2022] [Accepted: 07/01/2022] [Indexed: 02/01/2023] Open
Abstract
Intraoperative hypotension is associated with postoperative complications. However, in the majority of surgical patients, blood pressure (BP) is measured intermittently with a non-invasive cuff around the upper arm (NIBP-arm). We hypothesized that NIBP-arm, compared with a non-invasive continuous alternative, would result in missed events and in delayed recognition of hypotensive events. This was a sub-study of a previously published cohort study in adult patients undergoing surgery. The detection of hypotension (mean arterial pressure below 65 mmHg) was compared using two non-invasive methods; intermittent oscillometric NIBP-arm versus continuous NIBP measured with a finger cuff (cNIBP-finger) (Nexfin, Edwards Lifesciences). cNIBP-finger was used as the reference standard. Out of 350 patients, 268 patients (77%) had one or more hypotensive events during surgery. Out of the 286 patients, 72 (27%) had one or more missed hypotensive events. The majority of hypotensive events (92%) were detected with NIBP-arm, but were recognized at a median of 1.2 (0.6–2.2) minutes later. Intermittent BP monitoring resulted in missed hypotensive events and the hypotensive events that were detected were recognized with a delay. This study highlights the advantage of continuous monitoring. Future studies are needed to understand the effect on patient outcomes.
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Hansen J, Pohlmann M, Beckmann JH, Klose P, Gruenewald M, Renner J, Lorenzen U, Elke G. Comparison of oscillometric, non-invasive and invasive arterial pressure monitoring in patients undergoing laparoscopic bariatric surgery – a secondary analysis of a prospective observational study. BMC Anesthesiol 2022; 22:83. [PMID: 35346046 PMCID: PMC8962134 DOI: 10.1186/s12871-022-01619-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/17/2022] [Indexed: 11/18/2022] Open
Abstract
Background Oscillometric, non-invasive blood pressure measurement (NIBP) is the first choice of blood pressure monitoring in the majority of low and moderate risk surgeries. In patients with morbid obesity, however, it is subject to several limitations. The aim was to compare arterial pressure monitoring by NIBP and a non-invasive finger-cuff technology (Nexfin®) with the gold-standard invasive arterial pressure (IAP). Methods In this secondary analysis of a prospective observational, single centre cohort study, systolic (SAP), diastolic (DAP) and mean arterial pressure (MAP) were measured at 16 defined perioperative time points including posture changes, fluid bolus administration and pneumoperitoneum (PP) in patients undergoing laparoscopic bariatric surgery. Absolute arterial pressures by NIBP, Nexfin® and IAP were compared using correlation and Bland Altman analyses. Interchangeability was defined by a mean difference ≤ 5 mmHg (SD ≤8 mmHg). Percentage error (PE) was calculated as an additional statistical estimate. For hemodynamic trending, concordance rates were analysed according to the Critchley criterion. Results Sixty patients (mean body mass index of 49.2 kg/m2) were enrolled and data from 56 finally analysed. Pooled blood pressure values of all time points showed a significant positive correlation for both NIPB and Nexfin® versus IAP. Pooled PE for NIBP versus IAP was 37% (SAP), 35% (DAP) and 30% (MAP), for Nexfin versus IAP 23% (SAP), 26% (DAP) and 22% (MAP). Correlation of MAP was best and PE lowest before induction of anesthesia for NIBP versus IAP (r = 0.72; PE 24%) and after intraoperative fluid bolus administration for Nexfin® versus IAP (r = 0.88; PE: 17.2%). Concordance of MAP trending was 90% (SAP 85%, DAP 89%) for NIBP and 91% (SAP 90%, DAP 86%) for Nexfin®. MAP trending was best during intraoperative ATP positioning for NIBP (97%) and at induction of anesthesia for Nexfin® (97%). Conclusion As compared with IAP, interchangeability of absolute pressure values could neither be shown for NIBP nor Nexfin®, however, NIBP showed poorer overall correlation and precision. Overall trending ability was generally high with Nexfin® surpassing NIBP. Nexfin® may likely render individualized decision-making in the management of different hemodynamic stresses during laparoscopic bariatric surgery, particularly where NIBP cannot be reliably established. Trial registration The non-interventional, observational study was registered retrospectively at (NCT03184285) on June 12, 2017.
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Xu Z, Chen H, Zhou H, Sun X, Ren J, Sun H, Chen C, Chen G. Comparison of noninvasive continuous arterial blood pressure measured by NICAP with arterial line in elderly patients. BMC Geriatr 2022; 22:108. [PMID: 35130866 PMCID: PMC8822785 DOI: 10.1186/s12877-022-02803-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 01/31/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Non-Invasive Continuous Arterial Pressure system (NICAP) allows continuous monitoring, timely detection of hypotension, and avoiding risks from invasive procedures. A previous study showed good comparability of NICAP with arterial line in people with no evidence of cardiovascular disease. Therefore, the goal of this study was to investigate whether NICAP could be accurately applied to elderly patients. METHODS In this single-centered observational study, forty-one patients above 65 undergoing elective surgeries requiring artery catheterizations were enrolled from July 17, 2020, to June 25, 2021. Radial artery cannulation and NICAP monitoring were started before anesthesia. Blood pressure during the anesthesia induction and the whole surgery, trend of blood pressure changes, time needed for establishing continuous monitoring, and complications were recorded. RESULTS A total of 6751 valid pairs of blood pressure measurements were analyzed. In the Bland-Altman analysis, the arithmetic means for systolic, diastolic, and mean arterial pressure were 2.2, 3.3, and 2.8 mmHg, respectively. NICAP and arterial line correlation coefficients for systolic, diastolic, and mean arterial pressure were 0.49, 0.33, and 0.45, respectively. In the trending analysis, the polar concordance rates at 30 degrees were 70.9% for systolic, 67.7% for diastolic, and 69.3% for mean arterial blood pressure. During the anesthesia induction, the arithmetic means for systolic, diastolic, and mean arterial pressure in the Bland-Altman analysis were 1.7, -0.2, and 0.5 mmHg, respectively. NICAP and arterial line correlation coefficients for systolic, diastolic, and mean arterial pressure were 0.78, 0.61 and 0.75, respectively. No severe complications occurred. CONCLUSIONS NICAP has a poor correlation with the arterial line in elderly patients for the whole surgery or during anesthesia induction. Moreover, it showed poor comparability in the detection of blood pressure change trends with arterial lines. Our findings suggest that NICAP might not be sufficiently accurate to be applied clinically in elderly patients with comorbidities. More accurate calibration and iteration are needed.
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Affiliation(s)
- Zhao Xu
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China
| | - Hongyang Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China
| | - Hongyu Zhou
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China
| | - Xiaohui Sun
- Department of Anesthesiology, West China Hospital, Sichuan University/ West China School of Nursing, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China
| | - Jun Ren
- Department of Anesthesiology, Xinjiang Production and Construction Corps Hospital, No. 232 Qingnian Road, 830002, Urumqi, China
| | - Hongxia Sun
- Department of Anesthesiology, West China Hospital, Sichuan University/ West China School of Nursing, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China
| | - Chan Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China.
| | - Guo Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37 Guoxue Alley, 610041, Chengdu, China.
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Bobet M, Joachim J, Gayat E, Bonnet A, Sievert K, Barnichon C, Fischler M, Le Guen M. Blood pressure measurement during cesarean delivery: Evaluation of a beat-to-beat noninvasive device (NexfinTM). Medicine (Baltimore) 2021; 100:e26129. [PMID: 34087863 PMCID: PMC8183779 DOI: 10.1097/md.0000000000026129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 05/06/2021] [Indexed: 01/04/2023] Open
Abstract
Early detection of arterial hypotension during cesarean delivery under spinal anesthesia is important. This study aims to compare the validity of NexfinTM as beat-to-beat noninvasive blood pressure monitoring with conventional intermittent oscillometric measurement of blood pressure during elective cesarean delivery.This open prospective observational bicentric study was performed between January 2013 and December 2015. We simultaneously recorded arterial blood pressure with both techniques in pregnant women undergoing elective cesarean delivery under spinal anesthesia. The primary outcome was a Bland-Altman analysis of systolic blood pressure measurement comparing NexfinTM and a conventional method. The secondary outcomes were the time to detect the first relevant hypotensive episode and the comparison of both devices using a four-quadrant graph.One hundred and seventy-four parturients completed the study, and 2640 pairs of systolic blood pressure measurements were analyzed. Bias was -10 mmHg with upper and lower limits of agreement of -61 and +41 mmHg. In 73.9% of the cases, the two techniques provided the same information (normotension or hypotension), but the conventional method missed 20.8% of measurements, with NexfinTM detecting 16.2% more hypotensive measurements. The median [25-75 percentiles] duration to detect the first hypotensive measurement was 331 [206-480] seconds for NexfinTM and 440 [300-500] s for intermittent oscillometry (P < .001).The agreement between NexfinTM and an intermittent method for the measurement of systolic blood pressure was not in an acceptable range during cesarean delivery, although NexfinTM may detect hypotension earlier than the standard method.Trial registration: Clinicaltrials.gov identifier: NCT01732133; November 22, 2012.
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Affiliation(s)
- Mathieu Bobet
- Department of Anesthesiology, Hôpital Foch, Suresnes, France and University Versailles Saint-Quentin en Yvelines, Montigny-Le-Bretonneux
| | - Jona Joachim
- Department of Anesthesiology and Intensive Care, Hôpital Lariboisière - Saint Louis, Paris, France and Inserm, UMRS-942 and Paris Diderot University, Paris
| | - Etienne Gayat
- Department of Anesthesiology and Intensive Care, Hôpital Lariboisière - Saint Louis, Paris, France and Inserm, UMRS-942 and Paris Diderot University, Paris
| | - Agnès Bonnet
- Department of Anesthesiology, Institut Hospitalier Franco-Britannique, Levallois-Perret, France
| | - Kerstin Sievert
- Department of Anesthesiology, Hôpital Foch, Suresnes, France and University Versailles Saint-Quentin en Yvelines, Montigny-Le-Bretonneux
| | - Carole Barnichon
- Department of Anesthesiology, Institut Hospitalier Franco-Britannique, Levallois-Perret, France
| | - Marc Fischler
- Department of Anesthesiology, Hôpital Foch, Suresnes, France and University Versailles Saint-Quentin en Yvelines, Montigny-Le-Bretonneux
| | - Morgan Le Guen
- Department of Anesthesiology, Hôpital Foch, Suresnes, France and University Versailles Saint-Quentin en Yvelines, Montigny-Le-Bretonneux
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Eley V, Christensen R, Guy L, Wyssusek K, Pelecanos A, Dodd B, Stowasser M, van Zundert A. ClearSight™ finger cuff versus invasive arterial pressure measurement in patients with body mass index above 45 kg/m 2. BMC Anesthesiol 2021; 21:152. [PMID: 34006231 PMCID: PMC8130355 DOI: 10.1186/s12871-021-01374-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Measuring blood pressure in patients with obesity is challenging. The ClearSight™ finger cuff (FC) uses the vascular unloading technique to provide continuous non-invasive blood pressure measurements. We aimed to test the agreement of the FC with invasive radial arterial monitoring (INV) in patients with obesity. METHODS Participants had a body mass index (BMI) ≥45 kg/m2 and underwent laparoscopic bariatric surgery. FC and INV measurements were obtained simultaneously every 5 min on each patient, following induction of anesthesia. Agreement over time was assessed using modified Bland-Altman plots and error grid analysis permitted clinical interpretation of the results. Four-quadrant plots allowed assessment of concordance in blood pressure changes. RESULTS The 30 participants had a median (IQR) BMI of 50.2 kg/m2 (IQR 48.3-55.3). The observed bias (SD, 95% limits of agreement) for systolic blood pressure (SBP) was 14.3 mmHg (14.1, -13.4 - 42.0), 5.2 mmHg (10.9, -16.0 - 26.5) for mean arterial pressure (MAP) and 2.6 mmHg (10.8, -18.6 - 23.8) for diastolic blood pressure (DBP). Error grid analysis showed that the proportion of readings in risk zones A-E were 90.8, 6.5, 2.7, 0 and 0% for SBP and 91.4, 4.3, 4.3, 0 and 0% for MAP, respectively. Discordance occurred in ≤8% of pairs for consecutive change in SBP, MAP and DBP. CONCLUSIONS The vascular unloading technique was not adequately in agreement with radial arterial monitoring. Evaluation in a larger sample is required before recommending this technique for intraoperative monitoring of patients with BMI ≥45 kg/m2.
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Affiliation(s)
- Victoria Eley
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia. .,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia.
| | - Rebecca Christensen
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Louis Guy
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Kerstin Wyssusek
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Anita Pelecanos
- Statistics Unit, Queensland Institute of Medical Research Berghofer, Herston, Brisbane, 4006, Australia
| | - Benjamin Dodd
- Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia.,Department of Surgery, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia
| | - Michael Stowasser
- Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia.,Hypertension Unit, Princess Alexandra Hospital, Woolloongabba, Brisbane, 4102, Australia
| | - Andre van Zundert
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St, Herston, Queensland, 4006, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, 4067, Australia
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11
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Lee SW, Lee S, Kim H, Kim YJ, Kim M, Choi JH. Accuracy of noninvasive continuous arterial pressure monitoring using ClearSight during one-lung ventilation. Medicine (Baltimore) 2021; 100:e25152. [PMID: 33726000 PMCID: PMC7982160 DOI: 10.1097/md.0000000000025152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/23/2021] [Indexed: 01/05/2023] Open
Abstract
Noninvasive continuous arterial pressure monitoring may be clinically useful in patients who require continuous blood pressure monitoring in situations where arterial catheter placement is limited. Many previous studies on the accuracy of the noninvasive continuous blood pressure monitoring method reported various results. However, there is no research on the effectiveness of noninvasive arterial pressure monitoring during one-lung ventilation. The purpose of this study was to compare arterial blood pressure obtained through invasive method and noninvasive method by using ClearSight during one-lung ventilation.In this retrospective observational study, a total of 26 patients undergoing one-lung ventilation for thoracic surgery at a single institution between March and July 2019 were recruited. All patients in this study were cannulated on their radial artery to measure continuously invasive blood pressures and applied ClearSight on the ipsilateral side of the cannulated arm. We compared and analyzed the agreement and trendability of blood pressure recorded with invasive and noninvasive methods during one-lung ventilation.Blood pressure and pulse rate showed a narrower limit of agreement with a percentage error value of around 30%. In addition, the tracking ability of each measurement could be determined by the concordance rate, all of which were below acceptable limits (92%).In noninvasive arterial blood pressure monitoring using ClearSight, mean blood pressure and pulse rate show acceptable agreement with the invasive method.
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Affiliation(s)
- Sang-Wook Lee
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, Seoul
| | - Sangho Lee
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, Seoul
| | - Hyungtae Kim
- Department of Medicine, Graduate School, Kyung Hee University
| | - Yun-Jong Kim
- Department of Anesthesiology and Pain Medicine, Kyung Hee University Hospital
| | - Mihyeon Kim
- Department of Anesthesiology and Pain Medicine, Kyung Hee University Hospital
| | - Jeong-Hyun Choi
- Department of Anesthesiology and Pain Medicine, College of Medicine, Kyung Hee University, Seoul, Korea
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12
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Abstract
BACKGROUND The optimal method for blood pressure monitoring in obese surgical patients remains unknown. Arterial catheters can cause potential complications, and noninvasive oscillometry provides only intermittent values. Finger cuff methods allow continuous noninvasive monitoring. The authors tested the hypothesis that the agreement between finger cuff and intraarterial measurements is better than the agreement between oscillometric and intraarterial measurements. METHODS This prospective study compared intraarterial (reference method), finger cuff, and oscillometric (upper arm, forearm, and lower leg) blood pressure measurements in 90 obese patients having bariatric surgery using Bland-Altman analysis, four-quadrant plot and concordance analysis (to assess the ability of monitoring methods to follow blood pressure changes), and error grid analysis (to describe the clinical relevance of measurement differences). RESULTS The difference (mean ± SD) between finger cuff and intraarterial measurements was -1 mmHg (± 11 mmHg) for mean arterial pressure, -7 mmHg (± 14 mmHg) for systolic blood pressure, and 0 mmHg (± 11 mmHg) for diastolic blood pressure. Concordance between changes in finger cuff and intraarterial measurements was 88% (mean arterial pressure), 85% (systolic blood pressure), and 81% (diastolic blood pressure). In error grid analysis comparing finger cuff and intraarterial measurements, the proportions of measurements in risk zones A to E were 77.1%, 21.6%, 0.9%, 0.4%, and 0.0% for mean arterial pressure, respectively, and 89.5%, 9.8%, 0.2%, 0.4%, and 0.2%, respectively, for systolic blood pressure. For mean arterial pressure and diastolic blood pressure, absolute agreement and trending agreement between finger cuff and intraarterial measurements were better than between oscillometric (at each of the three measurement sites) and intraarterial measurements. Forearm performed better than upper arm and lower leg monitoring with regard to absolute agreement and trending agreement with intraarterial monitoring. CONCLUSIONS The agreement between finger cuff and intraarterial measurements was better than the agreement between oscillometric and intraarterial measurements for mean arterial pressure and diastolic blood pressure in obese patients during surgery. Forearm oscillometry exhibits better measurement performance than upper arm or lower leg oscillometry. EDITOR’S PERSPECTIVE
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13
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Naylor AJ, Sessler DI, Maheshwari K, Khanna AK, Yang D, Mascha EJ, Suleiman I, Reville EM, Cote D, Hutcherson MT, Nguyen BM, Elsharkawy H, Kurz A. Arterial Catheters for Early Detection and Treatment of Hypotension During Major Noncardiac Surgery: A Randomized Trial. Anesth Analg 2020; 131:1540-1550. [PMID: 33079877 DOI: 10.1213/ane.0000000000004370] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Continuous blood pressure monitoring may facilitate early detection and prompt treatment of hypotension. We tested the hypothesis that area under the curve (AUC) mean arterial pressure (MAP) <65 mm Hg is reduced by continuous invasive arterial pressure monitoring. METHODS Adults having noncardiac surgery were randomly assigned to continuous invasive arterial pressure or intermittent oscillometric blood pressure monitoring. Arterial catheter pressures were recorded at 1-minute intervals; oscillometric pressures were typically recorded at 5-minute intervals. We estimated the arterial catheter effect on AUC-MAP <65 mm Hg using a multivariable proportional odds model adjusting for imbalanced baseline variables and duration of surgery. Pressures <65 mm Hg were categorized as 0, 1-17, 18-91, and >91 mm Hg × minutes of AUC-MAP <65 mm Hg (ie, no hypotension and 3 equally sized groups of increasing hypotension). RESULTS One hundred fifty-two patients were randomly assigned to arterial catheter use and 154 to oscillometric monitoring. For various clinical reasons, 143 patients received an arterial catheter, while 163 were monitored oscillometrically. There were a median [Q1, Q3] of 246 [187, 308] pressure measurements in patients with arterial catheters versus 55 (46, 75) measurements in patients monitored oscillometrically. In the primary intent-to-treat analysis, catheter-based monitoring increased detection of AUC-MAP <65 mm Hg, with an estimated proportional odds ratio (ie, odds of being in a worse hypotension category) of 1.78 (95% confidence interval [CI], 1.18-2.70; P = .006). The result was robust over an as-treated analysis and for sensitivity analyses with thresholds of 60 and 70 mm Hg. CONCLUSIONS Intraoperative blood pressure monitoring with arterial catheters detected nearly twice as much hypotension as oscillometric measurements.
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Affiliation(s)
| | | | | | - Ashish K Khanna
- From the Departments of Outcomes Research
- General Anesthesiology
| | - Dongsheng Yang
- From the Departments of Outcomes Research
- Quantitative Health Sciences, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio
| | - Edward J Mascha
- From the Departments of Outcomes Research
- Quantitative Health Sciences, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio
| | | | | | - Devan Cote
- From the Departments of Outcomes Research
| | | | | | | | - Andrea Kurz
- From the Departments of Outcomes Research
- General Anesthesiology
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14
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Meidert AS, Briegel J, Saugel B. [Principles and pitfalls of arterial blood pressure measurement]. Anaesthesist 2020; 68:637-650. [PMID: 31270554 DOI: 10.1007/s00101-019-0614-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The determination of arterial blood pressure is a fundamental part of basic cardiovascular monitoring in perioperative, intensive care and emergency medicine. Blood pressure can be measured directly via an arterial catheter, which is the most accurate method. Blood pressure is most commonly monitored using noninvasive intermittent methods with an occluding upper arm cuff. Noninvasive intermittent blood pressure measurements can also be performed either manually using palpation and auscultation or automatically based on an oscillometric algorithm. Furthermore, methods such as the vascular unloading technique with a finger plethysmographic sensor are available for continuous and noninvasive blood pressure monitoring. This article explains the principles of the individual methods, the sources of errors, advantages and disadvantages and discusses the fields of application in the clinical routine.
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Affiliation(s)
- A S Meidert
- Klinik für Anaesthesiologie, Klinikum der Universität München (LMU), Marchioninistr. 15, 81377, München, Deutschland.
| | - J Briegel
- Klinik für Anaesthesiologie, Klinikum der Universität München (LMU), Marchioninistr. 15, 81377, München, Deutschland
| | - B Saugel
- Klinik und Poliklinik für Anästhesiologie, Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
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15
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Personalised haemodynamic management targeting baseline cardiac index in high-risk patients undergoing major abdominal surgery: a randomised single-centre clinical trial. Br J Anaesth 2020; 125:122-132. [PMID: 32711724 DOI: 10.1016/j.bja.2020.04.094] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Despite several clinical trials on haemodynamic therapy, the optimal intraoperative haemodynamic management for high-risk patients undergoing major abdominal surgery remains unclear. We tested the hypothesis that personalised haemodynamic management targeting each individual's baseline cardiac index at rest reduces postoperative morbidity. METHODS In this single-centre trial, 188 high-risk patients undergoing major abdominal surgery were randomised to either routine management or personalised haemodynamic management requiring clinicians to maintain personal baseline cardiac index (determined at rest preoperatively) using an algorithm that guided intraoperative i.v. fluid and/or dobutamine administration. The primary outcome was a composite of major complications (European Perioperative Clinical Outcome definitions) or death within 30 days of surgery. Secondary outcomes included postoperative morbidity (assessed by a postoperative morbidity survey), hospital length of stay, mortality within 90 days of surgery, and neurocognitive function assessed after postoperative Day 3. RESULTS The primary outcome occurred in 29.8% (28/94) of patients in the personalised management group, compared with 55.3% (52/94) of patients in the routine management group (relative risk: 0.54, 95% confidence interval [CI]: 0.38 to 0.77; absolute risk reduction: -25.5%, 95% CI: -39.2% to -11.9%; P<0.001). One patient assigned to the personalised management group, compared with five assigned to the routine management group, died within 30 days after surgery (P=0.097). There were no clinically relevant differences between the two groups for secondary outcomes. CONCLUSIONS In high-risk patients undergoing major abdominal surgery, personalised haemodynamic management reduces a composite outcome of major postoperative complications or death within 30 days after surgery compared with routine care. CLINICAL TRIAL REGISTRATION NCT02834377.
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The authors reply. Crit Care Med 2020; 48:e157-e158. [PMID: 31939821 DOI: 10.1097/ccm.0000000000004101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Tanioku T, Yoshida A, Aratani Y, Fujii K, Kawamata T. Validation of noninvasive continuous arterial pressure measurement by ClearSight System™ during induction of anesthesia for cardiovascular surgery. BMC Anesthesiol 2020; 20:176. [PMID: 32690040 PMCID: PMC7370521 DOI: 10.1186/s12871-020-01091-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/12/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Since blood pressure tends to be unstable during induction of anesthesia in patients undergoing cardiovascular surgery, an artery catheter is often inserted before induction to continuously monitor arterial pressure during induction of anesthesia. ClearSight System™ enables noninvasive continuous measurement of beat-to-beat arterial pressure via a single finger cuff without pain using photoplethysmographic technology. If ClearSight System™ can replace intra-arterial pressure measurement, blood pressure could be easily and noninvasively assessed. However, the validity of ClearSight System™ during induction of anesthesia in patients undergoing cardiovascular surgery has not been evaluated. The aim of this study was to compare blood pressure measured by ClearSight System™ with intra-arterial pressure during induction of anesthesia for cardiovascular surgery. METHODS This study was registered retrospectively. Data during induction of anesthesia for elective cardiovascular surgery were obtained for patients in whom noninvasive arterial pressure was measured by ClearSight System™ (APcs) and invasive radial arterial pressure (APrad) was measured simultaneously. According to the widely used criteria formulated by international standards from the Association for the Advancement of Medical Instrumentation, the acceptable bias and precision for arterial pressure measurements were fixed at < 5 mmHg and 8 mmHg, respectively. RESULTS Data for 18 patients were analyzed. For 3068 analyzed paired measurements, values of APcs vs APrad bias (precision) were 13.2 (17.5), - 9.1 (7.3) and - 3.9 (7.8) mmHg for systolic, diastolic, and mean arterial pressures, respectively. CONCLUSIONS Mean arterial pressure measured by ClearSight System™ could be considered as an alternative for mean radial arterial pressure during induction of anesthesia for elective cardiovascular surgery.
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Affiliation(s)
- Tadashi Tanioku
- Department of Anesthesiology, Wakayama Medical University School of Medicine, Kimiidera 811-1, Wakayama, 641-8509, Japan.
| | - Akari Yoshida
- Department of Anesthesiology, Wakayama Medical University School of Medicine, Kimiidera 811-1, Wakayama, 641-8509, Japan
| | - Yuichi Aratani
- Department of Anesthesiology, Wakayama Medical University School of Medicine, Kimiidera 811-1, Wakayama, 641-8509, Japan
| | - Keisuke Fujii
- Department of Anesthesiology, Wakayama Medical University School of Medicine, Kimiidera 811-1, Wakayama, 641-8509, Japan
| | - Tomoyuki Kawamata
- Department of Anesthesiology, Wakayama Medical University School of Medicine, Kimiidera 811-1, Wakayama, 641-8509, Japan
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18
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Monitoring of blood pressure in the perioperatory hypertensive patient. ACTA ACUST UNITED AC 2020. [PMID: 32178911 DOI: 10.1016/j.redar.2019.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The choice of the type of blood pressure monitoring in patients with uncontrolled hypertension varies depending on the patient's risk due to his previous pathology and cardiovascular risk, as well as the risk of the type of surgical intervention. We must assess the possibility of using new non-invasive monitors that allow optimal control of blood pressure continuously and evaluate the usefulness of new hemodynamic indexes that are still under study.
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Performance of the Hypotension Prediction Index with non-invasive arterial pressure waveforms in non-cardiac surgical patients. J Clin Monit Comput 2020; 35:71-78. [PMID: 31989416 PMCID: PMC7889685 DOI: 10.1007/s10877-020-00463-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/18/2020] [Indexed: 01/08/2023]
Abstract
An algorithm derived from machine learning uses the arterial waveform to predict intraoperative hypotension some minutes before episodes, possibly giving clinician’s time to intervene and prevent hypotension. Whether the Hypotension Prediction Index works well with noninvasive arterial pressure waveforms remains unknown. We therefore evaluated sensitivity, specificity, and positive predictive value of the Index based on non-invasive arterial waveform estimates. We used continuous hemodynamic data measured from ClearSight (formerly Nexfin) noninvasive finger blood pressure monitors in surgical patients. We re-evaluated data from a trial that included 320 adults ≥ 45 years old designated ASA physical status 3 or 4 who had moderate-to-high-risk non-cardiac surgery with general anesthesia. We calculated sensitivity and specificity for predicting hypotension, defined as mean arterial pressure ≤ 65 mmHg for at least 1 min, and characterized the relationship with receiver operating characteristics curves. We also evaluated the number of hypotensive events at various ranges of the Hypotension Prediction Index. And finally, we calculated the positive predictive value for hypotension episodes when the Prediction Index threshold was 85. The algorithm predicted hypotension 5 min in advance, with a sensitivity of 0.86 [95% confidence interval 0.82, 0.89] and specificity 0.86 [0.82, 0.89]. At 10 min, the sensitivity was 0.83 [0.79, 0.86] and the specificity was 0.83 [0.79, 0.86]. And at 15 min, the sensitivity was 0.75 [0.71, 0.80] and the specificity was 0.75 [0.71, 0.80]. The positive predictive value of the algorithm prediction at an Index threshold of 85 was 0.83 [0.79, 0.87]. A Hypotension Prediction Index of 80–89 provided a median of 6.0 [95% confidence interval 5.3, 6.7] minutes warning before mean arterial pressure decreased to < 65 mmHg. The Hypotension Prediction Index, which was developed and validated with invasive arterial waveforms, predicts intraoperative hypotension reasonably well from non-invasive estimates of the arterial waveform. Hypotension prediction, along with appropriate management, can potentially reduce intraoperative hypotension. Being able to use the non-invasive pressure waveform will widen the range of patients who might benefit. Clinical Trial Number: ClinicalTrials.gov NCT02872896.
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20
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Eley VA, Christensen R, Guy L, Dodd B. Perioperative Blood Pressure Monitoring in Patients With Obesity. Anesth Analg 2019; 128:484-491. [PMID: 30059399 DOI: 10.1213/ane.0000000000003647] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Blood pressure monitoring plays a key part in the preoperative, intraoperative, and postoperative care of all patients. In patients with obesity, hypertension indicates increased metabolic and surgical risk and may signal the presence of significant medical comorbidities, including obstructive sleep apnea. Avoidance of hypertension postoperatively is necessary to minimize bleeding risk after surgery. Hypotension in the postoperative period may be the first sign of significant complications that require urgent management. With the problem of being overweight or obese now affecting two-thirds of adults in Western countries, the proportion of patients with obesity in perioperative environments is similarly increasing. Detection of aberrations in blood pressure is contingent on the accuracy of blood pressure measurement methods. Patients with obesity tend to have a large arm circumference and "cone-shaped arms." Standard blood pressure cuffs fit such patients poorly, and this compromises the accuracy of measurements. Alternatives to arm blood pressure cuffs, some made specifically for individuals with obesity, have been evaluated but are not widely available to clinicians. This focused narrative review will discuss the relevance of hypertension management in the care of patients with obesity, highlight the currently available methods for perioperative monitoring of blood pressure, and explore the opportunities that exist to improve the perioperative blood pressure care in patients with obesity undergoing surgical procedures.
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Affiliation(s)
- Victoria A Eley
- From the Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, Australia
| | - Rebecca Christensen
- From the Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, Australia
| | - Louis Guy
- From the Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.,Faculty of Medicine, The University of Queensland, St Lucia, Queensland, Australia
| | - Benjamin Dodd
- Faculty of Medicine, The University of Queensland, St Lucia, Queensland, Australia.,Department of Surgery, The Royal Brisbane and Women's Hospital, Herston, Queensland, Australia
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Pour-Ghaz I, Manolukas T, Foray N, Raja J, Rawal A, Ibebuogu UN, Khouzam RN. Accuracy of non-invasive and minimally invasive hemodynamic monitoring: where do we stand? ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:421. [PMID: 31660320 DOI: 10.21037/atm.2019.07.06] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
One of the most important variables in assessing hemodynamic status in the intensive care unit (ICU) is the cardiac function and blood pressure. Invasive methods such as pulmonary artery catheter and arterial line allow monitoring of blood pressure and cardiac function accurately and reliably. However, their use is not without drawbacks, especially when the invasive nature of these procedures and complications associated with them are considered. There are several newer methods of noninvasive and minimally invasive hemodynamic monitoring available. In this manuscript, we will review these different methods of minimally invasive and non-invasive hemodynamic monitoring and will discuss their advantages, drawbacks and limitations.
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Affiliation(s)
- Issa Pour-Ghaz
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Theodore Manolukas
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Nathalie Foray
- Department of Medicine - Critical Care, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Joel Raja
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Aranyak Rawal
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Uzoma N Ibebuogu
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Rami N Khouzam
- Department of Internal Medicine, Division of Cardiovascular Diseases, University of Tennessee Health Science Center, Memphis, TN, USA
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Noninvasive continuous arterial pressure monitoring with Clearsight during awake carotid endarterectomy: A prospective observational study. Eur J Anaesthesiol 2019; 36:144-152. [PMID: 30562226 DOI: 10.1097/eja.0000000000000938] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND Continuous noninvasive blood pressure (CNBP) measurement using the volume-clamp method is a less invasive alternative compared with invasive intra-arterial monitoring for awake patients during carotid endarterectomy (CEA) under regional anaesthesia. OBJECTIVE We investigated the agreement of blood pressure (BP) recorded with invasive and CNBP methods during awake CEA. DESIGN A prospective observational study for assessing agreement with Bland-Altman plots, agreement-tolerability indices (ATI), concordance and interchangeability. SETTING Azienda Ospedaliera Universitaria G. Martino, Messina, a University tertiary referral centre in Italy. PATIENTS In 30 consecutive patients, we recorded continuously ipsilateral invasive and noninvasive BPs, from 3 min before carotid cross-clamping to 5 min after unclamping. MAIN OUTCOME MEASURES Primary outcome was bias, 95% limits of agreement, ATI, concordance and interchangeability for mean arterial pressure (MAP). Secondary outcomes were agreements for systolic arterial pressure and diastolic arterial pressure. Tracking of changes was assessed with four-quadrant polar plots and the trend interchangeability method. Optimal bias was defined as 5 mmHg or less. RESULTS A total of 2672 invasive and CNBP paired measurements (93% of overall data) were analysed, with a median of 92 readings per patient [IQR 76 to 100]. Mean (SD) bias for MAP, systolic arterial pressure and DAP were -6.8 (6.7), -3.0 (9.7) and -9.0 (5.4) mmHg, respectively. The ATIs were 0.88, 0.95 and 0.71, respectively, where ATI of 1.0 or less and at least 2.0 defined acceptable, marginal and unacceptable agreements. The four-quadrant plot analysis for beat-to-beat differences showed concordance rates of 97.3%, 99.98% and 96.4%, respectively. Polar plot analysis showed 95% limits of agreement of -3 to 3, -2 to 2 and -2 to 2 mmHg respectively. Trend interchangeability method showed an interchangeability rate of 95% for MAP. CONCLUSION During CEA performed under regional anaesthesia, CNBP offers a less invasive approach for BP monitoring. We found acceptable agreement for MAP defined by an ATI of 0.88 and an excellent 95% global interchangeability rate. A suboptimal bias of 7 mmHg was found with CNBP for MAP.
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23
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Continuous Noninvasive Arterial Pressure Monitoring in Obese Patients During Bariatric Surgery. Anesth Analg 2019; 128:477-483. [DOI: 10.1213/ane.0000000000003943] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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Maheshwari K, Makarova N, Sessler DI. In Response. Anesth Analg 2018; 128:e34. [PMID: 30399023 DOI: 10.1213/ane.0000000000003915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kamal Maheshwari
- Departments of Outcomes Research and General Anesthesiology, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio, Departments of Quantitative Health Sciences and Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio
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Davies DJ, Clancy M, Dehghani H, Lucas SJE, Forcione M, Yakoub KM, Belli A. Cerebral Oxygenation in Traumatic Brain Injury: Can a Non-Invasive Frequency Domain Near-Infrared Spectroscopy Device Detect Changes in Brain Tissue Oxygen Tension as Well as the Established Invasive Monitor? J Neurotrauma 2018; 36:1175-1183. [PMID: 29877139 DOI: 10.1089/neu.2018.5667] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The cost and highly invasive nature of brain monitoring modality in traumatic brain injury patients currently restrict its utility to specialist neurological intensive care settings. We aim to test the abilities of a frequency domain near-infrared spectroscopy (FD-NIRS) device in predicting changes in invasively measured brain tissue oxygen tension. Individuals admitted to a United Kingdom specialist major trauma center were contemporaneously monitored with an FD-NIRS device and invasively measured brain tissue oxygen tension probe. Area under the curve receiver operating characteristic (AUROC) statistical analysis was utilized to assess the predictive power of FD-NIRS in detecting both moderate and severe hypoxia (20 and 10 mm Hg, respectively) as measured invasively. Sixteen individuals were prospectively recruited to the investigation. Severe hypoxic episodes were detected in nine of these individuals, with the NIRS demonstrating a broad range of predictive abilities (AUROC 0.68-0.88) from relatively poor to good. Moderate hypoxic episodes were detected in seven individuals with similar predictive performance (AUROC 0.576-0.905). A variable performance in the predictive powers of this FD-NIRS device to detect changes in brain tissue oxygen was demonstrated. Consequently, this enhanced NIRS technology has not demonstrated sufficient ability to replace the established invasive measurement.
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Affiliation(s)
- David James Davies
- 1 National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Michael Clancy
- 1 National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Hamid Dehghani
- 2 School of Computer Science, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Samuel John Edwin Lucas
- 3 School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Mario Forcione
- 1 National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Kamal Makram Yakoub
- 1 National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Antonio Belli
- 1 National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
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Yamada T, Vacas S, Gricourt Y, Cannesson M. Improving Perioperative Outcomes Through Minimally Invasive and Non-invasive Hemodynamic Monitoring Techniques. Front Med (Lausanne) 2018; 5:144. [PMID: 29868596 PMCID: PMC5966660 DOI: 10.3389/fmed.2018.00144] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 04/25/2018] [Indexed: 01/10/2023] Open
Abstract
An increasing number of patients require precise intraoperative hemodynamic monitoring due to aging and comorbidities. To prevent undesirable outcomes from intraoperative hypotension or hypoperfusion, appropriate threshold settings are required. These setting can vary widely from patient to patient. Goal-directed therapy techniques allow for flow monitoring as the standard for perioperative fluid management. Based on the concept of personalized medicine, individual assessment and treatment are more advantageous than conventional or uniform interventions. The recent development of minimally and noninvasive monitoring devices make it possible to apply detailed control, tracking, and observation of broad patient populations, all while reducing adverse complications. In this manuscript, we review the monitoring features of each device, together with possible advantages and disadvantages of their use in optimizing patient hemodynamic management.
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Affiliation(s)
- Takashige Yamada
- Department of Anesthesiology and Perioperative Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Department of Anesthesiology, Keio University School of Medicine, Tokyo, Japan
| | - Susana Vacas
- Department of Anesthesiology and Perioperative Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yann Gricourt
- Departement Anesthesie Réanimation Douleur Urgence, Centre Hospitalaire Universitaire Caremeau, Nimes, France
| | - Maxime Cannesson
- Department of Anesthesiology and Perioperative Medicine, University of California, Los Angeles, Los Angeles, CA, United States
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Eley VA, Christensen R, Kumar S, Callaway LK. A review of blood pressure measurement in obese pregnant women. Int J Obstet Anesth 2018; 35:64-74. [PMID: 29954650 DOI: 10.1016/j.ijoa.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/27/2018] [Accepted: 04/15/2018] [Indexed: 10/17/2022]
Abstract
Blood pressure monitoring is a critical component of antenatal, peripartum and postnatal care. The accurate detection and treatment of abnormal blood pressure during pregnancy is essential for the optimisation of maternal and neonatal outcomes. Increasing maternal obesity in western populations is well documented. The presence of a large arm circumference in obese pregnant women may lead to difficult and inaccurate blood pressure measurements. Difficulties measuring blood pressure in non-pregnant obese patients are well described. In the literature, the problem is uncommonly mentioned in relation to pregnant patients. This topic review will discuss the importance and challenges of blood pressure measurement in pregnancy. The currently available equipment for blood pressure monitoring in pregnancy will be identified and the process of validating devices described. The limitations of the current validation protocols in pregnancy will be highlighted. It is concluded that a pregnancy-specific validation protocol is required: this would facilitate the introduction of new technology for use in high-risk pregnant women. More accurate blood pressure measurement has the potential to improve the diagnosis and management of abnormal blood pressure in pregnancy and influence maternal and neonatal outcomes.
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Affiliation(s)
- V A Eley
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St Herston, 2006 Queensland, Australia; The University of Queensland, Faculty of Medicine, Herston Road, Herston 4006, Queensland, Australia.
| | - R Christensen
- Department of Anaesthesia and Perioperative Medicine, The Royal Brisbane and Women's Hospital, Butterfield St Herston, 2006 Queensland, Australia; The University of Queensland, Faculty of Medicine, Herston Road, Herston 4006, Queensland, Australia
| | - S Kumar
- The University of Queensland, Faculty of Medicine, Herston Road, Herston 4006, Queensland, Australia; Mater Research Institute and Department of Maternal Fetal Medicine, The Mater Mothers' Hospital, Raymond Terrace, South Brisbane, 4101 Queensland, Australia
| | - L K Callaway
- The University of Queensland, Faculty of Medicine, Herston Road, Herston 4006, Queensland, Australia; Department of Obstetrics and Gynaecology/Obstetric Medicine, The Royal Brisbane and Women's Hospital, Butterfield St Herston, 2006 Queensland, Australia
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Noninvasive Hemodynamic Measurements During Neurosurgical Procedures in Sitting Position. J Neurosurg Anesthesiol 2018; 29:251-257. [PMID: 26998648 DOI: 10.1097/ana.0000000000000300] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Neurosurgical procedures in sitting position need advanced cardiovascular monitoring. Transesophageal echocardiography (TEE) to measure cardiac output (CO)/cardiac index (CI) and stroke volume (SV), and invasive arterial blood pressure measurements for systolic (ABPsys), diastolic (ABPdiast) and mean arterial pressure (MAP) are established monitoring technologies for these kind of procedures. A noninvasive device for continuous monitoring of blood pressure and CO based on a modified Penaz technique (volume-clamp method) was introduced recently. In the present study the noninvasive blood pressure measurements were compared with invasive arterial blood pressure monitoring, and the noninvasive CO monitoring to TEE measurements. METHODS Measurements of blood pressure and CO were performed in 35 patients before/after giving a fluid bolus and a change from supine to sitting position, start of surgery, and repositioning from sitting to supine at the end of surgery. Data pairs from the noninvasive device (Nexfin HD) versus arterial line measurements (ABPsys, ABPdiast, MAP) and versus TEE (CO, CI, SV) were compared using Bland-Altman analysis and percentage error. RESULTS All parameters compared (CO, CI, SV, ABPsys, ABPdiast, MAP) showed a large bias and wide limits of agreement. Percentage error was above 30% for all parameters except ABPsys. CONCLUSION The noninvasive device based on a modified Penaz technique cannot replace arterial blood pressure monitoring or TEE in anesthetized patients undergoing neurosurgery in sitting position.
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Meidert AS, Saugel B. Techniques for Non-Invasive Monitoring of Arterial Blood Pressure. Front Med (Lausanne) 2018; 4:231. [PMID: 29359130 PMCID: PMC5766655 DOI: 10.3389/fmed.2017.00231] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/04/2017] [Indexed: 11/13/2022] Open
Abstract
Since both, hypotension and hypertension, can potentially impair the function of vital organs such as heart, brain, or kidneys, monitoring of arterial blood pressure (BP) is a mainstay of hemodynamic monitoring in acutely or critically ill patients. Arterial BP can either be obtained invasively via an arterial catheter or non-invasively. Non-invasive BP measurement provides either intermittent or continuous readings. Most commonly, an occluding upper arm cuff is used for intermittent non-invasive monitoring. BP values are then obtained either manually (by auscultation of Korotkoff sounds or palpation) or automatically (e.g., by oscillometry). For continuous non-invasive BP monitoring, the volume clamp method or arterial applanation tonometry can be used. Both techniques enable the arterial waveform and BP values to be obtained continuously. This article describes the different techniques for non-invasive BP measurement, their advantages and limitations, and their clinical applicability.
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Affiliation(s)
- Agnes S Meidert
- Department of Anaesthesiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Noninvasive BP Monitoring in the Critically Ill: Time to Abandon the Arterial Catheter? Chest 2017; 153:1023-1039. [PMID: 29108815 DOI: 10.1016/j.chest.2017.10.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 10/11/2017] [Accepted: 10/26/2017] [Indexed: 12/17/2022] Open
Abstract
Although its reliability is often questioned, noninvasive BP (NIBP)-monitoring with an oscillometric arm cuff is widely used, even in critically ill patients in shock. When correctly implemented, modern arm NIBP devices can provide accurate and precise measurements of mean BP, as well as clinically meaningful information such as identification of hypotension and hypertension and monitoring of patient response to therapy. Even in specific circumstances such as arrhythmia, hypotension, vasopressor infusion, and possibly in obese patients, arm NIBP may be useful, contrary to widespread belief. Hence, postponing the arterial catheter insertion pending the initiation of more urgent diagnostic and therapeutic measures could be a suitable strategy. Given the arterial catheter-related burden, fully managing critically ill patients without any arterial catheter may also be an option. Indeed, the benefit that patients may experience from an arterial catheter has been questioned in studies failing to show that its use reduces mortality. However, randomized controlled trials to confirm that NIBP can safely fully replace the arterial catheter have yet to be performed. In addition to intermittent measurements, continuous NIBP monitoring is a booming field, as illustrated by the release onto the market of user-friendly devices, based on digital volume clamp and applanation tonometry. Although the imperfect accuracy and precision of these devices would probably benefit from technical refinements, their good ability to track, in real time, the direction of changes in BP is an undeniable asset. Their drawbacks and advantages and whether these devices are currently ready to use in the critically ill patient are discussed in this review.
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The impact of continuous non-invasive arterial blood pressure monitoring on blood pressure stability during general anaesthesia in orthopaedic patients. Eur J Anaesthesiol 2017; 34:716-722. [DOI: 10.1097/eja.0000000000000690] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Prophylactic atropine administration attenuates the negative haemodynamic effects of induction of anaesthesia with propofol and high-dose remifentanil. Eur J Anaesthesiol 2017; 34:695-701. [DOI: 10.1097/eja.0000000000000639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Michard F, Liu N, Kurz A. The future of intraoperative blood pressure management. J Clin Monit Comput 2017; 32:1-4. [PMID: 28168583 DOI: 10.1007/s10877-017-9989-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 01/22/2017] [Indexed: 01/10/2023]
Affiliation(s)
| | - Ngai Liu
- Department of Anesthesia, Hôpital Foch, 40 rue Worth, 92151, Suresnes, France
| | - Andrea Kurz
- Department of General Anesthesiology, Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH, USA
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Comparison of Continuous Noninvasive Blood Pressure Monitoring by TL-300 With Standard Invasive Blood Pressure Measurement in Patients Undergoing Elective Neurosurgery. J Neurosurg Anesthesiol 2017; 29:1-7. [DOI: 10.1097/ana.0000000000000245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bottiger BA, Bezinover DS, Mets B, Dalal PG, Prozesky J, Ural S, Vaida S. Phenylephrine infusion for spinal-induced hypotension in elective cesarean delivery: Does preload make a difference? J Anaesthesiol Clin Pharmacol 2016; 32:319-24. [PMID: 27625478 PMCID: PMC5009836 DOI: 10.4103/0970-9185.168159] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background and Aims: Patients undergoing elective cesarean delivery (CD) have a high-risk of spinal-induced hypotension (SIH). We hypothesized that a colloid preload would further reduce SIH when compared with a crystalloid preload. Material and Methods: Eighty-two healthy parturients undergoing elective CD were included in the study. Patients were randomly assigned to two groups (41 patients in each group) to receive either Lactated Ringer's solution (1500 ml) or hydroxyethyl starch (6% in normal saline, 500 ml) 30 min prior to placement of spinal anesthesia. All patients were treated with a phenylephrine infusion (100 mcg/min), titrated during the study. Results: There was no statistical difference between groups with regards to the incidence of hypotension (10.8% in the colloid group vs. 27.0% in the crystalloid group, P = 0.12). There was also no difference between groups with respect to bradycardia, APGAR scores, and nausea and vomiting. Significantly less phenylephrine (1077.5 ± 514 mcg) was used in the colloid group than the crystalloid group (1477 ± 591 mcg, P = 0.003). Conclusion: The preload with 6% of hydroxyethyl starch before CD might be beneficial for the prevention of SIH.
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Affiliation(s)
- Brandi A Bottiger
- Department of Anesthesiology, Duke University Medical Center, Durham, USA
| | - Dmitri S Bezinover
- Department of Anesthesiology, Penn State Milton S Hershey Medical Center, PA 17033, USA
| | - Berend Mets
- Department of Anesthesiology, Penn State Milton S Hershey Medical Center, PA 17033, USA
| | - Priti G Dalal
- Department of Anesthesiology, Penn State Milton S Hershey Medical Center, PA 17033, USA
| | - Jansie Prozesky
- Department of Anesthesiology, Penn State Milton S Hershey Medical Center, PA 17033, USA
| | - Serdar Ural
- Department of Maternal Fetal Medicine, Penn State Milton S Hershey Medical Center, PA 17033, USA
| | - Sonia Vaida
- Department of Anesthesiology, Penn State Milton S Hershey Medical Center, PA 17033, USA
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Heusdens J, Lof S, Pennekamp C, Specken-Welleweerd J, de Borst G, van Klei W, van Wolfswinkel L, Immink R. Validation of non-invasive arterial pressure monitoring during carotid endarterectomy. Br J Anaesth 2016; 117:316-23. [DOI: 10.1093/bja/aew268] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2016] [Indexed: 11/14/2022] Open
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A sneak peek into digital innovations and wearable sensors for cardiac monitoring. J Clin Monit Comput 2016; 31:253-259. [PMID: 27566472 DOI: 10.1007/s10877-016-9925-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/16/2016] [Indexed: 12/20/2022]
Abstract
Many mobile phone or tablet applications have been designed to control cardiovascular risk factors (obesity, smoking, sedentary lifestyle, diabetes and hypertension) or to optimize treatment adherence. Some have been shown to be useful but the long-term benefits remain to be demonstrated. Digital stethoscopes make easier the interpretation of abnormal heart sounds, and the development of pocket-sized echo machines may quickly and significantly expand the use of ultrasounds. Daily home monitoring of pulmonary artery pressures with wireless implantable sensors has been shown to be associated with a significant decrease in hospital readmissions for heart failure. There are more and more non-invasive, wireless, and wearable sensors designed to monitor heart rate, heart rate variability, respiratory rate, arterial oxygen saturation, and thoracic fluid content. They have the potential to change the way we monitor and treat patients with cardiovascular diseases in the hospital and beyond. Some may have the ability to improve quality of care, decrease the number of medical visits and hospitalization, and ultimately health care costs. Validation and outcome studies are needed to clarify, among the growing number of digital innovations and wearable sensors, which tools have real clinical value.
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Bartels K, Esper SA, Thiele RH. Blood Pressure Monitoring for the Anesthesiologist. Anesth Analg 2016; 122:1866-79. [DOI: 10.1213/ane.0000000000001340] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Balzer F, Habicher M, Sander M, Sterr J, Scholz S, Feldheiser A, Müller M, Perka C, Treskatsch S. Comparison of the non-invasive Nexfin® monitor with conventional methods for the measurement of arterial blood pressure in moderate risk orthopaedic surgery patients. J Int Med Res 2016; 44:832-43. [PMID: 27142436 PMCID: PMC5536626 DOI: 10.1177/0300060516635383] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 02/03/2016] [Indexed: 11/15/2022] Open
Abstract
Objective Continuous invasive arterial blood pressure (IBP) monitoring remains the gold standard for BP measurement, but traditional oscillometric non-invasive intermittent pressure (NIBP) measurement is used in most low-to-moderate risk procedures. This study compared non-invasive continuous arterial BP measurement using a Nexfin® monitor with NIBP and IBP monitors. Methods This was a single-centre, prospective, pilot study in patients scheduled for elective orthopaedic surgery. Systolic BP, diastolic BP and mean arterial blood pressure (MAP) were measured by Nexfin®, IBP and NIBP at five intraoperative time-points. Pearson correlation coefficients, Bland–Altman plots and trending ability of Nexfin® measurements were used as criteria for success in the investigation of measurement reliability. Results A total of 20 patients were enrolled in the study. For MAP, there was a sufficient correlation between IBP/Nexfin® (Pearson = 0.75), which was better than the correlation between IBP/NIBP (Pearson = 0.70). Bland–Altman analysis of the data showed that compared with IBP, there was a higher percentage error for MAPNIBP (30%) compared with MAPNexfin® (27%). Nexfin® and NIBP underestimated systolic BP; NIBP also underestimated diastolic BP and MAP. Trending ability for MAPNexfin® and MAPNIBP were comparable to IBP. Conclusion Non-invasive BP measurement with Nexfin® was comparable with IBP and tended to be more precise than NIBP.
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Affiliation(s)
- Felix Balzer
- Department of Anaesthesiology and Intensive Care Medicine, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Marit Habicher
- Department of Anaesthesiology and Intensive Care Medicine, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Michael Sander
- Department of Anaesthesiology and Intensive Care Medicine, Universitätsklinikum Giessen und Marburg GmbH, Rudolf-Buchheim-Straße, Giessen, Germany
| | - Julian Sterr
- Department of Internal Medicine, Klinikum Starnberg, Oßwaldstraße, Starnberg, Germany
| | - Stephanie Scholz
- Department of Anaesthesiology and Intensive Care Medicine, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Aarne Feldheiser
- Department of Anaesthesiology and Intensive Care Medicine, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Michael Müller
- Centre for Musculoskeletal Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité- Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Carsten Perka
- Centre for Musculoskeletal Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité- Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
| | - Sascha Treskatsch
- Department of Anaesthesiology and Intensive Care Medicine, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Charitéplatz, Berlin, Germany
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Blanié A, Soued M, Benhamou D, Mazoit JX, Duranteau J. A Comparison of Photoplethysmography Versus Esophageal Doppler for the Assessment of Cardiac Index During Major Noncardiac Surgery. Anesth Analg 2016; 122:430-6. [DOI: 10.1213/ane.0000000000001113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Haemodynamic management using non-invasive cardiac output monitoring for urgent craniotomy in fragile X syndrome: Case report☆. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2016. [DOI: 10.1097/01819236-201644010-00011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Guerrero-Domínguez R, López-Herrera-Rodríguez D, Beato-López FJ, Jiménez I. Haemodynamic management using non-invasive cardiac output monitoring for urgent craniotomy in fragile X syndrome: Case report. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2016. [DOI: 10.1016/j.rcae.2015.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Guerrero-Domínguez R, López-Herrera-Rodríguez D, Beato-López FJ, Jiménez I. Manejo hemodinámico mediante monitor no invasivo de gasto cardiaco para craneotomía urgente en el síndrome X frágil: reporte de caso. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2016. [DOI: 10.1016/j.rca.2015.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Vos JJ, Poterman M, Salm PP, Van Amsterdam K, Struys MMRF, Scheeren TWL, Kalmar AF. Noninvasive pulse pressure variation and stroke volume variation to predict fluid responsiveness at multiple thresholds: a prospective observational study. Can J Anaesth 2015; 62:1153-60. [PMID: 26335905 PMCID: PMC4595532 DOI: 10.1007/s12630-015-0464-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 08/16/2015] [Indexed: 11/30/2022] Open
Abstract
Background Pulse pressure variation (PPV) and stroke volume variation (SVV) are dynamic preload variables that can be measured noninvasively to assess fluid responsiveness (FR) in anesthetized patients with mechanical ventilation. Few studies have examined the effectiveness of predicting FR according to the definition of FR, and assessment of inconclusive values of PPV and SVV around the cut-off value (the “grey zone”) might improve individual FR prediction. We explored the ability of noninvasive volume clamp derived measurements of PPV and SVV to predict FR using the grey zone approach, and we assessed the influence of multiple thresholds on the predictive ability of the numerical definition of FR. Methods Ninety patients undergoing general surgery were included in this prospective observational study and received a 500 mL fluid bolus as deemed clinically required by the attending anesthesiologist. A minimal relative increase in stroke volume index (↑SVI) was used to define FR with different thresholds from 10-25%. The PPV, SVV, and SVI were measured using the Nexfin® device that employs noninvasive volume clamp plethysmography. Results The area under the receiver operator characteristic curve gradually increased for PPV / SVV with higher threshold values (from 0.818 / 0.760 at 10% ↑SVI to 0.928 / 0.944 at 25% ↑SVI). The grey zone limits of both PPV and SVV changed from 9–16% (PPV) and 5–13% (SVV) at the 10% ↑SVI threshold to 18–21% (PPV) and 14–16% (SVV) at the 25% ↑SVI threshold. Conclusion Noninvasive PPV and SVV measurements allow an acceptable FR prediction, although the reliability of both variables is dependent on the intended increase in SVI, which improves substantially with concomitant smaller grey zones at higher ↑SVI thresholds. Electronic supplementary material The online version of this article (doi:10.1007/s12630-015-0464-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jaap Jan Vos
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands.
| | - Marieke Poterman
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands
| | - Pieternel Papineau Salm
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands
| | - Kai Van Amsterdam
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands
| | - Michel M R F Struys
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands
| | - Thomas W L Scheeren
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands
| | - Alain F Kalmar
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO BOX 30 001, 9700 RB, Groningen, The Netherlands.,Department of Anesthesiology and Intensive Care Medicine, Maria Middelares Hospital, Ghent, Belgium
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Bartels K, Thiele RH. Advances in photoplethysmography: beyond arterial oxygen saturation. Can J Anaesth 2015; 62:1313-28. [PMID: 26286382 DOI: 10.1007/s12630-015-0458-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/03/2015] [Accepted: 08/11/2015] [Indexed: 01/19/2023] Open
Abstract
PURPOSE Photoplethysmography permits continuous measurement of heart rate and peripheral oxygen saturation and has been widely used to inform clinical decisions. Recently, a myriad of noninvasive hemodynamic monitoring devices using this same technology have been increasingly available. This narrative review aims to summarize the principles that form the basis for the function of these devices as well as to comment on trials evaluating their accuracy and clinical application. PRINCIPAL FINDINGS Advanced monitoring devices extend photoplethysmography technology beyond measuring oxygen concentration and heart rate. Quantification of respiratory variation of the photoplethysmographic waveform reflects respiratory variation of the arterial pressure waveform and can be used to gauge volume responsiveness. Both the volume-clamp and physiocal techniques are extensions of conventional photoplethysmography and permit continuous measurement of finger arterial blood pressure. Finger arterial pressure waveforms can subsequently inform estimations of cardiac output. CONCLUSIONS Although respiratory variations of the plethysmographic waveform correlate only modestly with the arterial blood pressure waveform, fluid responsiveness can be relatively consistently assessed using both approaches. Continuous blood pressure measurements obtained using the volume-clamp technique may be as accurate as conventional brachial noninvasive blood pressure measurements. Most importantly, clinical comparative effectiveness studies are still needed in order to determine if these technologies can be translated into improvement of relevant patient outcomes.
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Affiliation(s)
- Karsten Bartels
- Departments of Anesthesiology and Surgery, University of Colorado Denver, Aurora, CO, USA
| | - Robert H Thiele
- Divisions of Cardiac, Thoracic, and Critical Care Anesthesiology, Departments of Anesthesiology and Biomedical Engineering, University of Virginia School of Medicine, Charlottesville, VA, USA.
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Sakka SG. Hemodynamic Monitoring in the Critically Ill Patient - Current Status and Perspective. Front Med (Lausanne) 2015; 2:44. [PMID: 26284244 PMCID: PMC4522558 DOI: 10.3389/fmed.2015.00044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 06/26/2015] [Indexed: 01/20/2023] Open
Abstract
In the critically ill patient, early and effective hemodynamic management including fluid therapy and administration of vasoactive drugs to maintain vital organ perfusion and oxygen delivery is mandatory. Understanding the different approaches in the management of critically ill patients during the resuscitation and further management is essential to initiate adequate context- and time-specific interventions. Treatment of hemodynamic variables to achieve a balance between organ oxygen delivery and consumption is the cornerstone. In general, cardiac output is considered a major determinant of oxygen supply and thus its monitoring is regarded helpful. However, indicators of oxygen requirements are equally necessary to assess adequacy of oxygen supply. Currently, more and more less or even totally non-invasive monitoring systems have been developed and clinically introduced, but require validation in this particular patient population. Cardiac output monitors and surrogates of organ oxygenation only enable to adequately guide management, as patient's outcome is determined by acquisition and interpretation of accurate data, and finally suitable management decisions. This mini-review presents the currently available techniques in the field of hemodynamic monitoring in critically ill patients and briefly summarizes their advantages and limitations.
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Affiliation(s)
- Samir G Sakka
- Department of Anesthesiology and Operative Intensive Care Medicine, Medical Center Cologne Merheim, University Witten/Herdecke , Cologne , Germany
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Araz C, Zeyneloglu P, Pirat A, Veziroglu N, Camkiran Firat A, Arslan G. Accuracy of Continuous Noninvasive Arterial Pressure Monitoring in Living-Liver Donors During Transplantation. EXP CLIN TRANSPLANT 2015; 13 Suppl 1:301-5. [DOI: 10.6002/ect.mesot2014.p140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kalmar AF, Vos JJ, Poterman M, Scheeren TWL. Are we ready for non-invasive blood pressure monitoring?—reply. Br J Anaesth 2015; 115:130-1. [PMID: 26089450 DOI: 10.1093/bja/aev185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Karnwal A, Lippmann M, Kakazu C. Are we ready for non-invasive blood pressure monitoring? Br J Anaesth 2015; 115:130. [PMID: 26089449 DOI: 10.1093/bja/aev184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Simula N, Earle R, Vaghadia H, Sawka A. Effect of absent bilateral radial arteries on the accuracy of continuous real-time noninvasive blood pressure monitoring with the Nexfin™ system. Can J Anaesth 2015; 62:1128-9. [PMID: 26048360 DOI: 10.1007/s12630-015-0413-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 06/02/2015] [Indexed: 10/23/2022] Open
Affiliation(s)
- Natasha Simula
- Department of Anesthesia, Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada,
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