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Magajevski AS, Távora‐Mehta MZP, Mehta N, Maluf DLS, Silva ECP, Concato L, Ortiz MR, Doubrawa E, Lofrano‐Alves MS. Differential hemodynamic adaptations to tilt test in patients with idiopathic atrial fibrillation. Physiol Rep 2024; 12:e16131. [PMID: 38942728 PMCID: PMC11213645 DOI: 10.14814/phy2.16131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/29/2024] [Accepted: 06/20/2024] [Indexed: 06/30/2024] Open
Abstract
The hemodynamic response during the transition from the supine to standing position in idiopathic atrial fibrillation (AF) patients is not completely understood. This study aimed to analyze the hemodynamic changes that occur during the head-up tilt test in idiopathic AF patients. We investigated the hemodynamic changes during the head-up tilt test with impedance cardiography in 40 AF patients (12 with AF rhythm-AFr and 28 with sinus rhythm-AFsr) and 38 non-AF controls. Patients with AFr had attenuated SVI decrease after standing when compared to AFsr and non-AF [ΔSVI in mL/m2: -1.3 (-3.4 to 1.7) vs. -6.4 (-17.3 to -0.1) vs. -11.8 (-18.7 to -8.0), respectively; p < 0.001]. PVRI decreased in AFr but increased in AFsr and non-AF [ΔPVRI in dyne.seg.m2/cm5: -477 (-1148 to 82.5) vs. 131 (-525 to 887) vs. 357 (-29 to 681), respectively; p < 0.01]. Similarly, compared with non-AF patients, AFr patients also had a greater HR and greater CI increase after standing. The haemodynamic response to orthostatic challenge suggests differential adaptations between patients with AF rhythm and those reverted to sinus rhythm or healthy controls. Characterizing the hemodynamic phenotype may be relevant for the individualized treatment of AF patients.
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Affiliation(s)
- Adriano Senter Magajevski
- Post Graduate Program in Internal Medicine, Internal Medicine DepartmentFederal University of ParanaCuritibaParanaBrazil
- Cardiac Electrophysiology Service of ParanaCuritibaParanaBrazil
| | - Maria Zildany P. Távora‐Mehta
- Post Graduate Program in Internal Medicine, Internal Medicine DepartmentFederal University of ParanaCuritibaParanaBrazil
- Cardiac Electrophysiology Service of ParanaCuritibaParanaBrazil
| | - Niraj Mehta
- Post Graduate Program in Internal Medicine, Internal Medicine DepartmentFederal University of ParanaCuritibaParanaBrazil
- Cardiac Electrophysiology Service of ParanaCuritibaParanaBrazil
| | | | | | - Leticia Concato
- Cardiac Electrophysiology Service of ParanaCuritibaParanaBrazil
| | | | | | - Marco Stephan Lofrano‐Alves
- Post Graduate Program in Internal Medicine, Internal Medicine DepartmentFederal University of ParanaCuritibaParanaBrazil
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Meng L, Sun Y, Zhao X, Meng DM, Liu Z, Adams DC, McDonagh DL, Rasmussen M. Effects of phenylephrine on systemic and cerebral circulations in humans: a systematic review with mechanistic explanations. Anaesthesia 2024; 79:71-85. [PMID: 37948131 DOI: 10.1111/anae.16172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2023] [Indexed: 11/12/2023]
Abstract
We conducted a systematic review of the literature reporting phenylephrine-induced changes in blood pressure, cardiac output, cerebral blood flow and cerebral tissue oxygen saturation as measured by near-infrared spectroscopy in humans. We used the proportion change of the group mean values reported by the original studies in our analysis. Phenylephrine elevates blood pressure whilst concurrently inducing a reduction in cardiac output. Furthermore, despite increasing cerebral blood flow, it decreases cerebral tissue oxygen saturation. The extent of phenylephrine's influence on cardiac output (r = -0.54 and p = 0.09 in awake humans; r = -0.55 and p = 0.007 in anaesthetised humans), cerebral blood flow (r = 0.65 and p = 0.002 in awake humans; r = 0.80 and p = 0.003 in anaesthetised humans) and cerebral tissue oxygen saturation (r = -0.72 and p = 0.03 in awake humans; r = -0.24 and p = 0.48 in anaesthetised humans) appears closely linked to the magnitude of phenylephrine-induced blood pressure changes. When comparing the effects of phenylephrine in awake and anaesthetised humans, we found no evidence of a significant difference in cardiac output, cerebral blood flow or cerebral tissue oxygen saturation. There was also no evidence of a significant difference in effect on systemic and cerebral circulations whether phenylephrine was given by bolus or infusion. We explore the underlying mechanisms driving the phenylephrine-induced cardiac output reduction, cerebral blood flow increase and cerebral tissue oxygen saturation decrease. Individualised treatment approaches, close monitoring and consideration of potential risks and benefits remain vital to the safe and effective use of phenylephrine in acute care.
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Affiliation(s)
- L Meng
- Department of Anesthesia, Indiana University School of Medicine, IA, Indianapolis, USA
| | - Y Sun
- Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - X Zhao
- Department of Anesthesiology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - D M Meng
- Choate Rosemary Hall School, CT, Wallingford, USA
| | - Z Liu
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, IA, Indianapolis, USA
| | - D C Adams
- Department of Anesthesia, Indiana University School of Medicine, IA, Indianapolis, USA
| | - D L McDonagh
- Departments of Anesthesiology and Pain Management, Neurological Surgery, Neurology and Neurotherapeutics, UT Southwestern Medical Center, TX, Dallas, USA
| | - M Rasmussen
- Department of Anesthesiology, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
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He M, Gong C, Chen Y, Chen R, Qian Y. Effect of remimazolam vs. propofol on hemodynamics during general anesthesia induction in elderly patients: Single-center, randomized controlled trial. J Biomed Res 2023; 38:66-75. [PMID: 37907250 PMCID: PMC10818176 DOI: 10.7555/jbr.37.20230110] [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: 04/28/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 11/02/2023] Open
Abstract
The current study aimed to compare the effects between remimazolam and propofol on hemodynamic stability during the induction of general anesthesia in elderly patients. We used propofol at a rate of 60 mg/(kg·h) in the propofol group (group P) or remimazolam at a rate of 6 mg/(kg·h) in the remimazolam group (group R) for the induction. A processed electroencephalogram was used to determine whether the induction was successful and when to stop the infusion of the study drug. We measured when patients entered the operating room (T 0), when the induction was successful (T 1), and when before (T 2) and 5 min after successful endotracheal intubation (T 3). We found that mean arterial pressure (MAP) was lower at T 1-3, compared with T 0 in both groups, but higher at T 2 in the group R, while ΔMAP T0-T2 and ΔMAP max were smaller in the group R (ΔMAP T0-T2: the difference between MAP at time point T 0 and T 2, ΔMAP max: the difference between MAP at time point T 0 and the lowest value from T 0 to T 3). Cardiac index and stroke volume index did not differ between groups, whereas systemic vascular resistance index was higher at T 1-3 in the group R. These findings show that remimazolam, compared with propofol, better maintains hemodynamic stability during the induction, which may be attributed to its ability to better maintain systemic vascular resistance levels.
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Affiliation(s)
- Mingfeng He
- Department of Anesthesiology and Perioperative Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Chanjuan Gong
- Department of Anesthesiology and Perioperative Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yinan Chen
- Department of Anesthesiology and Perioperative Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Rongting Chen
- Department of Anesthesiology and Perioperative Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yanning Qian
- Department of Anesthesiology and Perioperative Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
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Takei Y, Kumagai M, Suzuki M, Mori S, Sato Y, Tamii T, Tamii A, Saito A, Ogata Y, Kaiho Y, Toyama H, Ejima Y, Yamauchi M. Accuracy of Cardiac Output Measured by Fourth-Generation Flotrac and Lidcorapid, and Their Characteristics Regarding Systemic Vascular Resistance in Patients Undergoing Cardiac Surgery. J Cardiothorac Vasc Anesth 2023:S1053-0770(23)00187-8. [PMID: 37076386 DOI: 10.1053/j.jvca.2023.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/24/2023] [Accepted: 03/11/2023] [Indexed: 04/21/2023]
Abstract
OBJECTIVES The clinical use of less-invasive devices that calculate the cardiac output from arterial pressure waveform is increasing. The authors aimed to evaluate the accuracy and characteristics of the systemic vascular resistance index (SVRI) of the cardiac index measured by 2 less-invasive devices, fourth-generation FloTrac (CIFT) and LiDCOrapid (CILR), compared with the intermittent thermodilution technique, using a pulmonary artery catheter (CITD). DESIGN This was a prospective observational study. SETTING This study was conducted at a single university hospital. PARTICIPANTS Twenty-nine adult patients undergoing elective cardiac surgery. INTERVENTIONS Elective cardiac surgery was used as an intervention. MEASUREMENTS AND MAIN RESULTS Hemodynamic parameters, CIFT, CILR, and CITD, were measured after the induction of general anesthesia, at the start of cardiopulmonary bypass, after completion of weaning from cardiopulmonary bypass, 30 minutes after weaning, and at sternal closure (135 measurements in total). The CIFT and CILR had moderate correlations with CITD (r = 0.62 and 0.58, respectively). Compared with CITD, CIFT, and CILR had a bias of -0.73 and -0.61 L/min/m2, limit of agreement of -2.14-to-0.68 L/min/m2 and -2.42-to-1.20 L/min/m2, and percentage error of 39.9% and 51.2%, respectively. Subgroup analysis for evaluating SVRI characteristics showed that the percentage errors of CIFT and CILR were 33.9% and 54.5% in low SVRI (<1,200 dyne×s/cm5/m), 37.6% and 47.9% in moderate SVRI (1,200-1,800 dyne×s/cm5/m), 49.3% and 50.6% in high SVRI (>1,800 dyne·s/cm5/m2), respectively. CONCLUSIONS The accuracy of CIFT or CILR was not clinically acceptable for cardiac surgery. Fourth-generation FloTrac was unreliable in high SVRI. LiDCOrapid was inaccurate across a broad range of SVRI, and minimally affected by SVRI.
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Affiliation(s)
- Yusuke Takei
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | - Michio Kumagai
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Manami Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Sakura Mori
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yuna Sato
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toru Tamii
- Department of Anesthesiology, Osaki Citizen Hospital, Osaki, Japan
| | - Akane Tamii
- Department of Anesthesiology, Sendai Medical Center, Sendai, Japan
| | - Ako Saito
- Department of Anesthesiology, Sendai Medical Center, Sendai, Japan
| | - Yuko Ogata
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yu Kaiho
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroaki Toyama
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yutaka Ejima
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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Wu NH, Hsieh TH, Chang CY, Shih PC, Kao MC, Lin HY. Validation of cardiac output estimation using the fourth-generation FloTrac/EV1000™ system in patients undergoing robotic-assisted off-pump coronary artery bypass surgery. Heart Vessels 2023; 38:341-347. [PMID: 36181530 DOI: 10.1007/s00380-022-02177-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 09/22/2022] [Indexed: 02/07/2023]
Abstract
The pulmonary artery catheter (PAC)-despite its invasiveness-remains the gold standard for cardiac output (CO) monitoring. The FloTrac system, a less invasive hemodynamic monitor has been developed, which estimates CO using arterial pressure waveform analysis without external calibration. Recently, an upgraded version of FloTrac system with improved algorithm to follow changes in vascular resistance was introduced into the market. The aim of this study was to assess the reliability of the CO estimated from the fourth-generation FloTrac/EV1000 system (COFT) compared to that measured with PAC using the thermodilution method (COPAC) during robotic-assisted off-pump coronary artery bypass (OPCAB) surgery. COFT and COPAC were obtained simultaneously at 4 predefined time points during robotic-assisted OPCAB: 5 min after the induction of general anesthesia (T1), after starting one-lung ventilation (T2), after capnothorax (T3), and after mini-thoracotomy was performed (T4). The agreement of data was investigated by Bland-Altman analysis. Thirty-four patients were initially enrolled. After exclusion, 32 patients and a total of 128 paired CO measurements were obtained. The overall bias was 1.46 L/min, the 95% limits of agreements were - 3.40 to 6.33 L/min, and the percentage error was 72.98%. Regression analysis of the systemic vascular resistance index (SVRI) and the bias between COPAC and COFT showed that the bias was moderately correlated with the SVRI (r2 = 0.43; p < 0.0001). Despite a software upgrade, the reliability of the fourth-generation FloTrac/EV1000™ system during robotic-assisted OPCAB to estimate CO was not acceptable, especially in patients with low SVRI.
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Affiliation(s)
- Nien-Hsun Wu
- Department of Anesthesiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 289, Jianguo Rd., Sindian District, New Taipei City, 23142, Taiwan
| | - Tsung-Han Hsieh
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chun-Yu Chang
- Department of Anesthesiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 289, Jianguo Rd., Sindian District, New Taipei City, 23142, Taiwan
| | - Ping-Chen Shih
- Department of Anesthesiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 289, Jianguo Rd., Sindian District, New Taipei City, 23142, Taiwan
| | - Ming-Chang Kao
- Department of Anesthesiology, New Taipei Municipal TuCheng Hospital (Built and Operated By Chang Gung Medical Foundation), New Taipei City, Taiwan
| | - Han-Yu Lin
- Department of Anesthesiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 289, Jianguo Rd., Sindian District, New Taipei City, 23142, Taiwan. .,School of Medicine, Tzu Chi University, Hualien, Taiwan.
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6
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Kim MH, Yoo YC, Bai SJ, Lee KY, Kim N, Lee KY. Physiologic and hemodynamic changes in patients undergoing open abdominal cytoreductive surgery with hyperthermic intraperitoneal chemotherapy. J Int Med Res 2021; 49:300060520983263. [PMID: 33445991 PMCID: PMC7812408 DOI: 10.1177/0300060520983263] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective We aimed to determine the physiological and hemodynamic changes in patients who were undergoing hyperthermic intraperitoneal chemotherapy (HIPEC) cytoreductive surgeries. Methods This prospective, observational study enrolled 21 patients who were undergoing elective cytoreductive surgery with HIPEC at our hospital over 2 years. We collected vital signs, hemodynamic parameters including global end-diastolic volume index (GEVI) and extravascular lung water index (ELWI) using the VolumeView™ system, and arterial blood gas analysis from all patients. Data were recorded before skin incision (T1); 30 minutes before HIPEC initiation (T2); 30 (T3), 60 (T4), and 90 (T5) minutes after HIPEC initiation; 30 minutes after HIPEC completion (T6); and 10 minutes before surgery completion (T7). Results Patients showed an increase in body temperature and cardiac index and a decrease in the systemic vascular resistance index. GEDI was 715.4 (T1) to 809.7 (T6), and ELWI was 6.9 (T1) to 7.3 (T5). Conclusions HIPEC increased patients’ body temperature and cardiac output and decreased systemic vascular resistance. Although parameters that were extracted from the VolumeView™ system were within their normal ranges, transpulmonary thermodilution approach is helpful in intraoperative hemodynamic management during open abdominal cytoreductive surgery with HIPEC. Trial registry name: ClinicalTrials.gov Trial registration number: NCT02325648 URL: https://clinicaltrials.gov/ct2/results?cond=NCT02325648&term
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Affiliation(s)
- Myoung Hwa Kim
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Republic of Korea
| | - Young Chul Yoo
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Joon Bai
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kang-Young Lee
- Division of Colon and Rectal Surgery, Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Nayeon Kim
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Republic of Korea
| | - Ki Young Lee
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
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Shim J, Cho EA, Ryu KH, Lee SH, Kim JI, Kim D, Oh EJ, Ahn JH. Effects of prophylactic atropine on the time to tracheal intubation with the pre-administration of remifentanil. Acta Anaesthesiol Scand 2021; 65:335-342. [PMID: 33165918 DOI: 10.1111/aas.13739] [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: 06/15/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Pre-administration of remifentanil in target-controlled propofol and remifentanil anaesthesia could prolong the time of onset of muscle relaxation owing to haemodynamic effects, thereby prolonging the time to tracheal intubation. Although the sympatholytic effects of remifentanil result in bradycardia and hypotension, these responses can be attenuated by the administration of atropine. Therefore, we investigated whether prophylactic administration of atropine could prevent the prolongation of the time to tracheal intubation. METHODS Sixty-four patients were included in this study. They were randomised into Group A (atropine 0.5 mg, n = 32) and Group S (saline 0.9%, n = 32), immediately before the pre-administration of remifentanil. The primary outcome was the time to tracheal intubation and the secondary outcomes were rocuronium onset time, time to loss of consciousness (LOC), time to reach a value of 60 on the bispectral index (BIS) and haemodynamic variables. RESULTS The median [Interquartile range] of the time to tracheal intubation was 240 [214, 288]s in Group S and 190 [176, 212]s in Group A(median difference: 50 s, 95% confidence interval: 27-80 s, P = .001). Rocuronium onset time was significantly decreased in Group A compared to that in Group S (129 [110, 156] vs 172 [154, 200], P = .001). The times to LOC and reach 60 on the BIS were not significantly different between the two groups. Cardiac output(CO) and heart rate were less decreased in Group A than in Group S (P = .02, P < .001, respectively). CONCLUSIONS Prophylactic administration of atropine could compensate for the reduction in CO in cases pre-administered with remifentanil in target-controlled propofol and remifentanil anaesthesia. This in turn prevented the prolongation of rocuronium onset time and reduced the time to tracheal intubation.
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Affiliation(s)
- Jae‐Geum Shim
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
| | - Eun A. Cho
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
| | - Kyoung Ho Ryu
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
| | - Sung Hyun Lee
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
| | - Jeong In Kim
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
| | - Doyeon Kim
- Department of Anesthesiology and Pain Medicine Samsung Medical Centre Sungkyunkwan University School of Medicine Seoul Korea
| | - Eun Jung Oh
- Department of Anesthesiology and Pain Medicine Samsung Medical Centre Sungkyunkwan University School of Medicine Seoul Korea
| | - Jin Hee Ahn
- Department of Anesthesiology and Pain Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Seoul Korea
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Mukai A, Suehiro K, Kimura A, Tanaka K, Yamada T, Mori T, Nishikawa K. Effect of Systemic Vascular Resistance on the Reliability of Noninvasive Hemodynamic Monitoring in Cardiac Surgery. J Cardiothorac Vasc Anesth 2020; 35:1782-1791. [PMID: 33279380 DOI: 10.1053/j.jvca.2020.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To assess the effect of systemic vascular resistance (SVR) on the reliability of the ClearSight system (Edwards Lifesciences, Irvine, CA) for measuring blood pressure (BP) and cardiac output (CO). DESIGN Observational study. SETTING University hospital. PARTICIPANTS Twenty-five patients undergoing cardiac surgery. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS BP, measured using ClearSight and an arterial line, and CO, measured using ClearSight and a pulmonary artery catheter, were recorded before (T1) and two minutes after phenylephrine or ephedrine administration. Bland-Altman analysis was used to compare BP and CO measurements at T1. A polar plot was used to assess trending abilities. Patients were divided into the following three groups according to the SVR index (SVRI) at T1: low (<1,200 dyne s/cm5/m2), normal (1,200-25,00 dyne s/cm5/m2), and high (>2,500 dyne s/cm5/m2). The bias in BP and CO was -4.8 ± 8.9 mmHg and 0.10 ± 0.81 L/min, respectively, which was correlated significantly with SVRI (p < 0.05). The percentage error in CO was 40.6%, which was lower in the normal SVRI group (33.3%) than the low and high groups (46.3% and 47.7%, respectively). The angular concordance rate was 96.3% and 95.4% for BP and 87.0% and 92.5% for CO after phenylephrine and ephedrine administration, respectively. There was a low tracking ability for CO changes after phenylephrine administration in the low-SVRI group (angular concordance rate 33.3%). CONCLUSION The ClearSight system showed an acceptable accuracy in measuring BP and tracking BP changes in various SVR states; however, the accuracy of CO measurement and its trending ability in various SVR states was poor.
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Affiliation(s)
- Akira Mukai
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
| | - Koichi Suehiro
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan.
| | - Aya Kimura
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
| | - Katsuaki Tanaka
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
| | - Tokuhiro Yamada
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
| | - Takashi Mori
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
| | - Kiyonobu Nishikawa
- Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan
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Terada T, Ochiai R. Comparison of the ability of two continuous cardiac output monitors to detect stroke volume index: Estimated continuous cardiac output estimated by modified pulse wave transit time and measured by an arterial pulse contour-based cardiac output device. Technol Health Care 2020; 29:499-504. [PMID: 32925120 DOI: 10.3233/thc-202332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Estimated continuous cardiac output (esCCO), a non-invasive technique for continuously measuring cardiac output (CO), is based on modified pulse wave transit time, which is determined by pulse oximetry and electrocardiography. OBJECTIVE We examined the ability of esCCO to detect stroke volume index (SVI) and changes in SVI compared with currently available arterial waveform analysis methods. METHODS We retrospectively reanalysed 15 of the cases from our previous study on esCCO measurement. SVI was calculated using an esCCO system, measured using the arterial pressure-based CO (APCO) method, and compared with a corresponding intermittent bolus thermodilution CO (ICO) method. Percentage error measurement and statistical methods, including concordance analysis and polar plot analysis, were performed. RESULTS The difference in the SVI values between esCCO and ICO was -3.0 ± 8.8 ml (percentage error, 33.5%). The mean angular bias was 0.8 and the radial limits of agreement were ± 27.3. The difference in the SVI values between APCO and ICO was 0.9 ± 11.2 ml (percentage error, 42.6%). The mean angular bias was -6.8 and the radial limits of agreement were ± 44.1. CONCLUSION This study demonstrated that the accuracy, precision, and dynamic trend of esCCO are better than those of APCO.
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Jun JH, Chung RK, Baik HJ, Chung MH, Hyeon JS, Lee YG, Park SH. The tidal volume challenge improves the reliability of dynamic preload indices during robot-assisted laparoscopic surgery in the Trendelenburg position with lung-protective ventilation. BMC Anesthesiol 2019; 19:142. [PMID: 31390982 PMCID: PMC6686427 DOI: 10.1186/s12871-019-0807-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/18/2019] [Indexed: 12/12/2022] Open
Abstract
Background The reliability of pulse pressure variation (PPV) and stroke volume variation (SVV) is controversial under pneumoperitoneum. In addition, the usefulness of these indices is being called into question with the increasing adoption of lung-protective ventilation using low tidal volume (VT) in surgical patients. A recent study indicated that changes in PPV or SVV obtained by transiently increasing VT (VT challenge) accurately predicted fluid responsiveness even in critically ill patients receiving low VT. We evaluated whether the changes in PPV and SVV induced by a VT challenge predicted fluid responsiveness during pneumoperitoneum. Methods We performed an interventional prospective study in patients undergoing robot-assisted laparoscopic surgery in the Trendelenburg position under lung-protective ventilation. PPV, SVV, and the stroke volume index (SVI) were measured at a VT of 6 mL/kg and 3 min after increasing the VT to 8 mL/kg. The VT was reduced to 6 mL/kg, and measurements were performed before and 5 min after volume expansion (infusing 6% hydroxyethyl starch 6 ml/kg over 10 min). Fluid responsiveness was defined as ≥15% increase in the SVI. Results Twenty-four of the 38 patients enrolled in the study were responders. In the receiver operating characteristic curve analysis, an increase in PPV > 1% after the VT challenge showed excellent predictive capability for fluid responsiveness, with an area under the curve (AUC) of 0.95 [95% confidence interval (CI), 0.83–0.99, P < 0.0001; sensitivity 92%, specificity 86%]. An increase in SVV > 2% after the VT challenge predicted fluid responsiveness, but showed only fair predictive capability, with an AUC of 0.76 (95% CI, 0.60–0.89, P < 0.0006; sensitivity 46%, specificity 100%). The augmented values of PPV and SVV following VT challenge also showed the improved predictability of fluid responsiveness compared to PPV and SVV values (as measured by VT) of 6 ml/kg. Conclusions The change in PPV following the VT challenge has excellent reliability in predicting fluid responsiveness in our surgical population. The change in SVV and augmented values of PPV and SVV following this test are also reliable. Trial registration This trial was registered with Clinicaltrials.gov, NCT03467711, 10th March 2018.
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Affiliation(s)
- Joo-Hyun Jun
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University, College of Medicine, Seoul, South Korea
| | - Rack Kyung Chung
- Department of Anesthesiology and Pain Medicine, Ewha Womans University, College of Medicine, Anyangcheon-ro, Yangcheon-gu, Seoul, 1071, South Korea.
| | - Hee Jung Baik
- Department of Anesthesiology and Pain Medicine, Ewha Womans University, College of Medicine, Anyangcheon-ro, Yangcheon-gu, Seoul, 1071, South Korea
| | - Mi Hwa Chung
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University, College of Medicine, Seoul, South Korea
| | - Joon-Sang Hyeon
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University, College of Medicine, Seoul, South Korea
| | - Young-Goo Lee
- Department of Urology, Kangnam Sacred Heart Hospital, Hallym University, College of Medicine, Seoul, South Korea
| | - Sung-Ho Park
- Department of Obstetrics and Gynecology, Kangnam Sacred Heart Hospital, Hallym University, College of Medicine, Seoul, South Korea
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11
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Kondo Y, Hirose N, Maeda T, Yoshino A, Suzuki T. Relationship between changes in regional cerebral blood volume and oxygenation and changes in cardiac output and systemic vascular resistance during spinal anesthesia in women undergoing cesarean section. J Anesth 2019; 33:579-586. [DOI: 10.1007/s00540-019-02670-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 08/02/2019] [Indexed: 12/01/2022]
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12
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Eisenried A, Klarwein R, Ihmsen H, Wehrfritz A, Tandler R, Heim C, Fechner J. Accuracy and Trending Ability of the Fourth-Generation FloTrac/EV1000 System in Patients With Severe Aortic Valve Stenosis Before and After Surgical Valve Replacement. J Cardiothorac Vasc Anesth 2019; 33:1230-1236. [DOI: 10.1053/j.jvca.2018.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Indexed: 11/11/2022]
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13
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Hao GW, Liu Y, Ma GG, Hou JY, Zhu DM, Liu L, Zhang Y, Liu H, Zhuang YM, Luo Z, Tu GW, Yang XM, Chen HY. Reliability of three-dimensional color flow Doppler and two-dimensional pulse wave Doppler transthoracic echocardiography for estimating cardiac output after cardiac surgery. Cardiovasc Ultrasound 2019; 17:5. [PMID: 30944001 PMCID: PMC6448273 DOI: 10.1186/s12947-019-0155-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/01/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Three-dimensional color flow Doppler (3DCF) is a new convenient technique for cardiac output (CO) measurement. However, to date, no one has evaluated the accuracy of 3DCF echocardiography for CO measurement after cardiac surgery. Therefore, this single-center, prospective study was designed to evaluate the reliability of three-dimensional color flow and two-dimensional pulse wave Doppler (2D-PWD) transthoracic echocardiography for estimating cardiac output after cardiac surgery. METHODS Post-cardiac surgical patients with a good acoustic window and a low dose or no dose of vasoactive drugs (norepinephrine < 0.05 μg/kg/min) were enrolled for CO estimation. Three different methods (third generation FloTrac/Vigileo™ [FT/V] system as the reference method, 3DCF, and 2D-PWD) were used to estimate CO before and after interventions (baseline, after volume expansion, and after a dobutamine test). RESULTS A total of 20 patients were enrolled in this study, and 59 pairs of CO measurements were collected (one pair was not included because of increasing drainage after the dobutamine test). Pearson's coefficients were 0.260 between the CO-FT/V and CO-PWD measurements and 0.729 between the CO-FT/V and CO-3DCF measurements. Bland-Altman analysis showed the bias between the absolute values of CO-FT/V and CO-PWD measurements was - 0.6 L/min with limits of agreement between - 3.3 L/min and 2.2 L/min, with a percentage error (PE) of 61.3%. The bias between CO-FT/V and CO-3DCF was - 0.14 L/min with limits of agreement between - 1.42 L /min and 1.14 L/min, with a PE of 29.9%. Four-quadrant plot analysis showed the concordance rate between ΔCO-PWD and ΔCO-3FT/V was 93.3%. CONCLUSIONS In a comparison with the FT/V system, 3DCF transthoracic echocardiography could accurately estimate CO in post-cardiac surgical patients, and the two methods could be considered interchangeable. Although 2D-PWD echocardiography was not as accurate as the 3D technique, its ability to track directional changes was reliable.
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Affiliation(s)
- Guang-Wei Hao
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Yang Liu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Guo-Guang Ma
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Jun-Yi Hou
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Du-Ming Zhu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Lan Liu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Ying Zhang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Hua Liu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Ya-Min Zhuang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Zhe Luo
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Guo-Wei Tu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Xiao-Mei Yang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China.
| | - Hai-Yan Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, People's Republic of China.
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Kusaka Y, Ohchi F, Minami T. Evaluation of the Fourth-Generation FloTrac/Vigileo System in Comparison With the Intermittent Bolus Thermodilution Method in Patients Undergoing Cardiac Surgery. J Cardiothorac Vasc Anesth 2019; 33:953-960. [DOI: 10.1053/j.jvca.2018.06.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Indexed: 11/11/2022]
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15
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Sumiyoshi M, Maeda T, Miyazaki E, Hotta N, Sato H, Hamaguchi E, Kanazawa H, Ohnishi Y, Kamei M. Accuracy of the ClearSight™ system in patients undergoing abdominal aortic aneurysm surgery. J Anesth 2019; 33:364-371. [DOI: 10.1007/s00540-019-02632-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/16/2019] [Indexed: 11/28/2022]
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16
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Maeda T, Hamaguchi E, Kubo N, Shimokawa A, Kanazawa H, Ohnishi Y. The accuracy and trending ability of cardiac index measured by the fourth-generation FloTrac/Vigileo system™ and the Fick method in cardiac surgery patients. J Clin Monit Comput 2018; 33:767-776. [DOI: 10.1007/s10877-018-0217-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/01/2018] [Indexed: 12/25/2022]
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17
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Wajima Z, Shiga T, Imanaga K. Bolus administration of ephedrine and etilefrine induces transient vasodilation just after injection in combined epidural and general anesthesia patients: A randomized clinical study. Biosci Trends 2018; 12:382-388. [PMID: 30101824 DOI: 10.5582/bst.2018.01074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Hypotension commonly accompanies combined epidural and general anesthesia, and intravenous bolus ephedrine and etilefrine are widely used to correct hypotension. We have noticed that systemic vascular resistance (SVR) transiently decreases just after intravenous bolus administration of these drugs. The goal of the present study was to investigate whether bolus administration of these drugs decrease SVR just after intravenous administration in combined epidural and general anesthesia patients. We investigated 40 patients who were scheduled for elective abdominal surgery. Patients were chosen as subjects if their systolic arterial pressure decreased by 20% or to <100 mmHg at 30 min after the induction of general anesthesia. Baseline hemodynamic values were recorded, and after ephedrine 10 mg injection or etilefrine 2 mg injection (equipotent), the parameters were recorded again at 0.5 min and once each min for the next 5 min thereafter. The 40 patients were enrolled into the ephedrine (n = 20) or etilefrine (n = 20) treatment groups. Patient characteristics were comparable in both groups. After ephedrine injection, SVR decreased significantly at the 1-min time point, whereas after etilefrine injection, SVR decreased significantly at the 0.5- to 2-min time points compared with baseline values. SVR at the 0.5- to 1-min time points was lower in the etilefrine versus the ephedrine group. Both drugs transiently decreased SVR after intravenous injection, but etilefrine decreased SVR much more than ephedrine, indicating that more vasodilation occurred after the injection of etilefrine than after ephedrine. It is thus important to recognize the different characteristics of these drugs.
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Affiliation(s)
- Zen'ichiro Wajima
- Department of Anesthesiology, Tokyo Medical University Hachioji Medical Center
| | - Toshiya Shiga
- Department of Anesthesiology and Intensive Care Medicine, International University of Health and Welfare, School of Medicine
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Maeda T, Hattori K, Sumiyoshi M, Kanazawa H, Ohnishi Y. Accuracy and trending ability of the fourth-generation FloTrac/Vigileo System™ in patients undergoing abdominal aortic aneurysm surgery. J Anesth 2018; 32:387-393. [DOI: 10.1007/s00540-018-2491-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
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19
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Zlicar M, Novak-Jankovic V, Blagus R, Cecconi M. Predictive values of pulse pressure variation and stroke volume variation for fluid responsiveness in patients with pneumoperitoneum. J Clin Monit Comput 2017; 32:825-832. [PMID: 29149433 DOI: 10.1007/s10877-017-0081-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 11/13/2017] [Indexed: 10/18/2022]
Abstract
Animal studies suggest that dynamic predictors remain useful in patients with pneumoperitoneum, but human data is conflicting. Our aim was to determine predictive values of pulse pressure variation (PPV) and stroke volume variation (SVV) in patients with pneumoperitoneum using LiDCORapid™ haemodynamic monitor. Standardised fluid challenges of colloid were administered to patients undergoing laparoscopic procedures, one fluid challenge per patient. Intra-abdominal pressure was automatically held at 12 mmHg. Fluid responsiveness was defined as an increase in nominal stroke index (nSI) ≥ 10%. Linear regression was used to assess the ability of PPV and SVV to track the changes of nSI and logistic regression and area under the receiver operating curve (AUROC) to assess the predictive value of PPV and SVV for fluid responsiveness. Threshold values for PPV and SVV were obtained using the "gray zone" approach. A p < 0.05 was considered as statistically significant. 56 patients were included in analysis. 41 patients (73%) responded to fluids. Both PPV and SVV tracked changes in nSI (Spearman correlation coefficients 0.34 for PPV and 0.53 for SVV). Odds ratio for fluid responsiveness for PPV was 1.163 (95% CI 1.01-1.34) and for SVV 1.341 (95% CI 1.10-1.63). PPV achieved an AUROC of 0.674 (95% CI 0.518-0.830) and SVV 0.80 (95% CI 0.668-0.932). The gray zone of PPV ranged between 6.5 and 20.5% and that of SVV between 7.5 and 13%. During pneumoperitoneum, as measured by LiDCORapid™, PPV and SVV can predict fluid responsiveness, however their sensitivity is lower than the one reported in conditions without pneumoperitoneum. Trial registry number: (with the Australian New Zealand Clinical Trials Registry): ACTRN12612000456853.
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Affiliation(s)
- Marko Zlicar
- Clinical Department of Anaesthesiology and Intensive Therapy, University Medical Centre Ljubljana, Zaloska 2, Ljubljana, Slovenia.
| | - Vesna Novak-Jankovic
- Clinical Department of Anaesthesiology and Intensive Therapy, University Medical Centre Ljubljana, Zaloska 2, Ljubljana, Slovenia
| | - Rok Blagus
- Institute for Biostatistics and Medical Informatics, Medical Faculty, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia
| | - Maurizio Cecconi
- Adult Critical Care, St. George's Healthcare NHS Trust, London, SW170QT, UK
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Lighthall GK, Singh S. Perioperative Maintenance of Tissue Perfusion and Cardiac Output in Cardiac Surgery Patients. Semin Cardiothorac Vasc Anesth 2017; 18:117-36. [PMID: 24876228 DOI: 10.1177/1089253214534781] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Sumit Singh
- University of California Los Angeles, CA, USA
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21
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van Drumpt A, van Bommel J, Hoeks S, Grüne F, Wolvetang T, Bekkers J, Ter Horst M. The value of arterial pressure waveform cardiac output measurements in the radial and femoral artery in major cardiac surgery patients. BMC Anesthesiol 2017; 17:42. [PMID: 28288587 PMCID: PMC5348755 DOI: 10.1186/s12871-017-0334-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/28/2017] [Indexed: 12/02/2022] Open
Abstract
Background A relatively new uncalibrated arterial pressure waveform cardiac output (CO) measurement technique is the Pulsioflex-ProAQT® system. Aim of this study was to validate this system in cardiac surgery patients with a specific focus on the evaluation of a difference in the radial versus the femoral arterial access, the value of the auto-calibration modus and the ability to show fluid-induced changes. Methods In twenty-five patients scheduled for ascending aorta, aortic arch replacement, or both we measured CO simultaneously by transpulmonary thermodilution (COtd) and by using the ProAQT® system connected to the radial (COpR), as well as the femoral artery catheter (COpF). Hemodynamic data were assessed at predefined time points; from incision until 16 h after ICU admission. Results In total 175 (radial) and 179 (femoral) pairs of CO measurement were collected. The accuracy of COpR/COpF was evaluated showing a mean bias of −0.31 L/min (±2.9 L/min) and -0.57 L/min (± 2.8 L/min) with percentage errors of 49 and 46% respectively. Trending ability of the ProAQT® device was evaluated; the four quadrant concordance rates in the radial and femoral artery were 74 and 75% and improved to 77 and 85% after auto-calibration. The mean angular biases in the radial and femoral artery were 6.4° and 6.0° and improved to 5° and 3.3° after auto-calibration. The polar concordance rates in the radial and femoral artery were 65 and 70% and improved to 76 and 84% after auto-calibration. Considering the fluid-induced changes in stroke volume(SV), the coefficient of correlation between the changes in SVtd and SVp was 0.57 (p < 0.01) in the radial artery and 0.60 (p < 0.01) in the femoral artery. Conclusions The ProAQT® system can be of additional value if the clinician wants to determine fluid responsiveness in cardiac surgery patients. However, the ProAQT® system provided inaccurate CO measurements compared to transpulmonary thermodilution. The trending ability was poor for COpR but moderate for COpF. Auto-calibration of the system did not improve accuracy of CO measurements nor did it improve the prediction of fluid responsiveness. However, the trending ability was improved by auto-calibration, possibly by correcting a drift over a longer time period.
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Affiliation(s)
- A van Drumpt
- Department of Anesthesiology, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
| | - J van Bommel
- Department of Intensive Care Adults, Erasmus Medical Center, Rotterdam, The Netherlands
| | - S Hoeks
- Department of Anesthesiology, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - F Grüne
- Department of Anesthesiology, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - T Wolvetang
- Department of Anesthesiology, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - J Bekkers
- Department of Cardiothoracic Surgery, Erasmus Medical Center, Rotterdam, The Netherlands
| | - M Ter Horst
- Department of Anesthesiology, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
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22
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Hattori K, Maeda T, Masubuchi T, Yoshikawa A, Ebuchi K, Morishima K, Kamei M, Yoshitani K, Ohnishi Y. Accuracy and Trending Ability of the Fourth-Generation FloTrac/Vigileo System in Patients With Low Cardiac Index. J Cardiothorac Vasc Anesth 2017; 31:99-104. [DOI: 10.1053/j.jvca.2016.06.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Indexed: 11/11/2022]
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23
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Shih BF, Huang PH, Yu HP, Liu FC, Lin CC, Chung PCH, Chen CY, Chang CJ, Tsai YF. Cardiac Output Assessed by the Fourth-Generation Arterial Waveform Analysis System Is Unreliable in Liver Transplant Recipients. Transplant Proc 2017; 48:1170-5. [PMID: 27320580 DOI: 10.1016/j.transproceed.2015.12.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 12/07/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Liver transplant recipients often have violent hemodynamic fluctuation during surgery that may be related to perioperative and postoperative morbidity. Because there are some considerations for the risk of the pulmonary arterial catheter (PAC), the conventional invasive device for cardiac output (CO) measurement, a reliable and minimally invasive alternative is required. We validated the reliability of CO measurements with the use of a minimally invasive FloTrac system with the latest fourth-generation algorithm in liver transplant recipients. METHODS Forty liver transplant recipients without atrial fibrillation, valvular pathology, or intracardiac shunt were recruited in this prospective, observational study. CO values measured by use of PAC with continuous thermodilution method (COTh) and FloTrac devices (COFT) were collected simultaneously throughout the operation for reliability validation. RESULTS Four hundred pairs of CO data points were collected in total. The linear regression analysis showed a high correlation coefficient (73%, P < .001). However, the percent error between COTh and COFT was 42.2%, which is worse than the established interchangeability criterion of 30%. The concordance rates were calculated at 89% and 59% by 4-quadrant plot and polar plot analysis, respectively. Neither met the preset validation criteria (>92% for the 4-quadrant plot and >90% for polar plot analyses). CONCLUSIONS Our study demonstrates that the CO measurements in liver transplant recipients by the latest FloTrac system and the PAC do not meet the recognized interchangeability criterion. Although the result showed improvement in linear regression analysis, it failed to display a qualified trending ability.
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Affiliation(s)
- B-F Shih
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - P-H Huang
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - H-P Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - F-C Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - C-C Lin
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - P C-H Chung
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - C-Y Chen
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - C-J Chang
- Clinical Informatics and Medical Statistics Research Center, Chang Gung University, Guishan, Taoyuan, Taiwan; Biostatistical Center for Clinical Research, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - Y-F Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan.
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Power P, Bone A, Simpson N, Yap CH, Gower S, Bailey M. Comparison of pulmonary artery catheter, echocardiography, and arterial waveform analysis monitoring in predicting the hemodynamic state during and after cardiac surgery. Int J Crit Illn Inj Sci 2017; 7:156-162. [PMID: 28971029 PMCID: PMC5613407 DOI: 10.4103/2229-5151.214411] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Objective: The aim of this trial was to determine whether Flotrac Vigileo™ (FV™) provides a reliable representation of the hemodynamic state of a cardiac surgical patient population when compared to pulmonary artery catheter (PAC) and echocardiography in the peril-operative period. Design: This was a prospective observational trial comparing perioperative hemodynamic states using transesophageal echocardiography (TEE), transthoracic echocardiography (TTE), FV™ and PAC during and post cardiothoracic surgery. Setting: Tertiary regional hospital Intensive Care Unit (ICU). Participants: 50 consecutive adult cardiothoracic patients with written consent provided. Intervention: Comparison of the perioperative hemodynamic states using echocardiography, FV™ and PAC was performed. Evaluation of the hemodynamic state (HDS) was performed using TEE, TTE, PAC and FV™ during and after cardiac surgery. Data were compared between the three hemodynamic assessment modalities. Main Outcome Measure: Predicted hemodynamic state. Results: FV™ and PAC were shown to correlate poorly with TEE/TTE assessment of the hemodynamic state. Both PAC and FV™ showed significant discordance with echocardiographic assessment of the hemodynamic state. Conclusions: In this trial, FV™ and PAC were shown to agree poorly with TTE/TEE assessment of the HDS in an adult cardiothoracic population. Agreement between the FV™ and PAC was also poor. Caution is recommended in interpreting isolated hemodynamic monitoring data. All hemodynamic monitoring devices have inherent sources of error. Caution is advised in interpreting any single device or measurement as a gold standard. We suggest that hemodynamic measuring devices such as FV™/PAC may act as triggers for a global hemodynamic assessment including consideration of TTE/TEE.
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Affiliation(s)
- Paul Power
- Intensive Care Unit, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia
| | - Allison Bone
- Intensive Care Unit, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia
| | - Nicholas Simpson
- Intensive Care Unit, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia.,Deakin University School of Medicine, Barwon Health, Geelong, Victoria, Australia
| | - Cheng-Hon Yap
- Department of Cardiothoracic Surgery, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia.,Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Simon Gower
- Department of Anaesthesia, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia
| | - Michael Bailey
- Department of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Victoria, Australia
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Accuracy of Cardiac Output by Nine Different Pulse Contour Algorithms in Cardiac Surgery Patients: A Comparison with Transpulmonary Thermodilution. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3468015. [PMID: 28116294 PMCID: PMC5225324 DOI: 10.1155/2016/3468015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/09/2016] [Accepted: 11/22/2016] [Indexed: 11/24/2022]
Abstract
Objective. Today, there exist several different pulse contour algorithms for calculation of cardiac output (CO). The aim of the present study was to compare the accuracy of nine different pulse contour algorithms with transpulmonary thermodilution before and after cardiopulmonary bypass (CPB). Methods. Thirty patients scheduled for elective coronary surgery were studied before and after CPB. A passive leg raising maneuver was also performed. Measurements included CO obtained by transpulmonary thermodilution (COTPTD) and by nine pulse contour algorithms (COX1–9). Calibration of pulse contour algorithms was performed by esophageal Doppler ultrasound after induction of anesthesia and 15 min after CPB. Correlations, Bland-Altman analysis, four-quadrant, and polar analysis were also calculated. Results. There was only a poor correlation between COTPTD and COX1–9 during passive leg raising and in the period before and after CPB. Percentage error exceeded the required 30% limit. Four-quadrant and polar analysis revealed poor trending ability for most algorithms before and after CPB. The Liljestrand-Zander algorithm revealed the best reliability. Conclusions. Estimation of CO by nine different pulse contour algorithms revealed poor accuracy compared with transpulmonary thermodilution. Furthermore, the less-invasive algorithms showed an insufficient capability for trending hemodynamic changes before and after CPB. The Liljestrand-Zander algorithm demonstrated the highest reliability. This trial is registered with NCT02438228 (ClinicalTrials.gov).
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Emerging Methodology of Intraoperative Hemodynamic Monitoring Research. CURRENT ANESTHESIOLOGY REPORTS 2016. [DOI: 10.1007/s40140-016-0176-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nakasuji M, Okutani A, Miyata T, Imanaka N, Tanaka M, Nakasuji K, Nagai M. Disagreement between fourth generation FloTrac and LiDCOrapid measurements of cardiac output and stroke volume variation during laparoscopic colectomy. J Clin Anesth 2016; 35:150-156. [PMID: 27871513 DOI: 10.1016/j.jclinane.2016.07.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/11/2016] [Accepted: 07/14/2016] [Indexed: 12/13/2022]
Abstract
STUDY OBJECTIVE To determine the agreement between cardiac output (CO) and stroke volume variation (SVV) measured simultaneously by the fourth generation FloTrac/Vigileo system and LiDCOrapid system during pneumoperitoneum in patients undergoing laparoscopic colectomy. DESIGN Retrospective observational study. SETTINGS Operating room in a general hospital. PATIENTS Ten patients (American Society of Anesthesiologist 1 or 2) without preoperative anemia. INTERVENTIONS A 22-gauge catheter was inserted in the radial artery after induction of anesthesia. The arterial line was split to monitor CO and SVV simultaneously with the LiDCOrapid and fourth generation FloTrac/Vigileo systems. All data were downloaded from each system after surgery and simultaneous paired COFloTrac, COLiDCO and SVVFloTrac, SVVLiDCO values estimated every 1 minute during the pneumoperitoneum were analyzed. MEASUREMENTS To assess the agreement after carbon dioxide insufflation, a scatter 4-quadrant plot was generated using paired ΔCO values (changes in COFloTrac and COLiDCO just before pneumoperitoneum and 3 minutes after the induction of pneumoperitoneum). For data in which SVVFloTrac was >9% but <16% and cardiac index measured by FloTrac/Vigileo was <2.5 L/min per m2 during stable pneumoperitoneum (the period from 5 minutes after Trendelenburg position until discontinuation of pneumoperitoneum), simultaneously measured paired SVVFloTrac and SVVLiDCO were plotted every 1 minute using the Bland-Altman method. MAIN RESULTS A concordance ratio for changes in CO after the induction of pneumoperitoneum was 83% in 4-quadrant plot. During stable pneumoperitoneum, 702 paired SVVFloTrac and SVVLiDCO matched the criteria. These data sets were plotted by the Bland-Altman method and the bias and 95% limit of agreement of SVV were 2.01 and -2.63% to 6.65%, respectively, with 38% percentage error. The regression equation was SVVLiDCO = 0.98 × SVVFloTrac- 1.73 with Pearson correlation coefficient of 0.55. CONCLUSIONS Our study showed disagreement between the 2 methods and the hemodynamic parameters measured by one of the two devices should be interpreted with caution before therapeutic interventions.
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Affiliation(s)
- Masato Nakasuji
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan; Division of Anesthesiology and Critical Care Medicine, Kansai Electric Power Medical Research Institute, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Aki Okutani
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Taeko Miyata
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Norie Imanaka
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Masuji Tanaka
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Kae Nakasuji
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
| | - Miwako Nagai
- Department of Anesthesiology, Kansai Electric Power Hospital, 2-1-7 Fukushima, Fukushima-ku, Osaka, 553-0003, Japan.
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Maeda T, Sakurai R, Nakagawa K, Morishima K, Maekawa M, Furumoto K, Kono T, Egawa A, Kubota Y, Kato S, Okamura H, Yoshitani K, Ohnishi Y. Cardiac Resynchronization Therapy-Induced Cardiac Index Increase Measured by Three-Dimensional Echocardiography Can Predict Decreases in Brain Natriuretic Peptide. J Cardiothorac Vasc Anesth 2016; 30:599-605. [DOI: 10.1053/j.jvca.2015.09.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Indexed: 11/11/2022]
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Renner J, Grünewald M, Bein B. Monitoring high-risk patients: minimally invasive and non-invasive possibilities. Best Pract Res Clin Anaesthesiol 2016; 30:201-16. [PMID: 27396807 DOI: 10.1016/j.bpa.2016.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/21/2016] [Accepted: 04/27/2016] [Indexed: 12/19/2022]
Abstract
Over the past decades, there has been considerable progress in the field of less invasive haemodynamic monitoring technologies. Substantial evidence has accumulated, which supports the continuous measurement and optimization of flow-based variables such as stroke volume, that is, cardiac output, in order to prevent occult hypoperfusion and consequently to improve patients' outcome in the perioperative setting. However, there is a striking gap between the developments in haemodynamic monitoring and the increasing evidence to implement defined treatment protocols based on the measured variables, and daily clinical routine. Recent trials have shown that perioperative morbidity and mortality is higher than anticipated. This emphasizes the need for the anaesthesia community to address this issue and promotes the implementation of proven concepts into clinical practice in order to improve patients' outcome, especially in high-risk patients. The advances in minimally invasive and non-invasive monitoring techniques can be seen as a driving force in this respect, as the degree of invasiveness of any monitoring tool determines the frequency of its application, especially in the operating room (OR). From this point of view, we are very confident that some of these minimally invasive and non-invasive haemodynamic monitoring technologies will become an inherent part of our monitoring armamentarium in the OR and in the intensive care unit (ICU).
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Affiliation(s)
- Jochen Renner
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Germany.
| | - Matthias Grünewald
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Germany.
| | - Berthold Bein
- Department of Anaesthesiology and Intensive Care Medicine, Asklepios Klinik St. Georg, Hamburg, Germany.
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Phan TD, Kluger R, Wan C. Minimally Invasive Cardiac Output Monitoring: Agreement of Oesophageal Doppler, LiDCOrapid™ and Vigileo FloTrac™ Monitors in Non-Cardiac Surgery. Anaesth Intensive Care 2016; 44:382-90. [DOI: 10.1177/0310057x1604400313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
There is lack of data about the agreement of minimally invasive cardiac output monitors, which make it impossible to determine if they are interchangeable or differ objectively in tracking physiological trends. We studied three commonly used devices: the oesophageal Doppler and two arterial pressure–based devices, the Vigileo FloTrac™ and LiDCOrapid™. The aim of this study was to compare the agreement of these three monitors in adult patients undergoing elective non-cardiac surgery. Measurements were taken at baseline and after predefined clinical interventions of fluid, metaraminol or ephedrine bolus. From 24 patients, 131 events, averaging 5.2 events per patient, were analysed. The cardiac index of LiDCOrapid versus FloTrac had a mean bias of −6.0% (limits of agreement from −51% to 39%) and concordance of over 80% to the three clinical interventions. The cardiac index of Doppler versus LiDCOrapid and Doppler versus FloTrac, had an increasing negative bias at higher mean cardiac outputs and there was significantly poorer concordance to all interventions. Of the preload-responsive parameters, Doppler stroke volume index, Doppler systolic flow time and FloTrac stroke volume variation were fair at predicting fluid responsiveness while other parameters were poor. While there is reasonable agreement between the two arterial pressure–derived cardiac output devices (LiDCOrapid and Vigileo FloTrac), these two devices differ significantly to the oesophageal Doppler technology in response to common clinical intraoperative interventions, representing a limitation to how interchangeable these technologies are in measuring cardiac output.
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Affiliation(s)
- T. D. Phan
- Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital, University of Melbourne, Melbourne, Victoria
| | - R. Kluger
- Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital, University of Melbourne, Melbourne, Victoria
| | - C. Wan
- Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital, University of Melbourne, Melbourne, Victoria
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Hemodynamic monitoring and management in high-risk surgery: a survey among Japanese anesthesiologists. J Anesth 2016; 30:526-9. [DOI: 10.1007/s00540-016-2155-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 02/18/2016] [Indexed: 01/10/2023]
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Broch O, Carbonell J, Ferrando C, Metzner M, Carstens A, Albrecht M, Gruenewald M, Höcker J, Soro M, Steinfath M, Renner J, Bein B. Accuracy of an autocalibrated pulse contour analysis in cardiac surgery patients: a bi-center clinical trial. BMC Anesthesiol 2015; 15:171. [PMID: 26612072 PMCID: PMC4661938 DOI: 10.1186/s12871-015-0153-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 11/22/2015] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Less-invasive and easy to install monitoring systems for continuous estimation of cardiac index (CI) have gained increasing interest, especially in cardiac surgery patients who often exhibit abrupt haemodynamic changes. The aim of the present study was to compare the accuracy of CI by a new semi-invasive monitoring system with transpulmonary thermodilution before and after cardiopulmonary bypass (CPB). METHODS Sixty-five patients (41 Germany, 24 Spain) scheduled for elective coronary surgery were studied before and after CPB, respectively. Measurements included CI obtained by transpulmonary thermodilution (CITPTD) and autocalibrated semi-invasive pulse contour analysis (CIPFX). Percentage changes of CI were also calculated. RESULTS There was only a poor correlation between CITPTD and CIPFX both before (r (2) = 0.34, p < 0.0001) and after (r (2) = 0.31, p < 0.0001) CPB, with a percentage error (PE) of 62 and 49 %, respectively. Four quadrant plots revealed a concordance rate over 90 % indicating an acceptable correlation of trends between CITPTD and CIPFX before (concordance: 93 %) and after (concordance: 94 %) CPB. In contrast, polar plot analysis showed poor trending before and an acceptable trending ability of changes in CI after CPB. CONCLUSIONS Semi-invasive CI by autocalibrated pulse contour analysis showed a poor ability to estimate CI compared with transpulmonary thermodilution. Furthermore, the new semi-invasive device revealed an acceptable trending ability for haemodynamic changes only after CPB. TRIAL REGISTRATION ClinicalTrials.gov: NCT02312505 Date: 12.03.2012.
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Affiliation(s)
- Ole Broch
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany.
| | - Jose Carbonell
- Department of Anaesthesiology and Critical Care, University Hospital Valencia, Avenida Blasco Ibanez 17, 46010, Valencia, Spain
| | - Carlos Ferrando
- Department of Anaesthesiology and Critical Care, University Hospital Valencia, Avenida Blasco Ibanez 17, 46010, Valencia, Spain
| | - Malte Metzner
- Christian-Albrechts-University Kiel, Schleswig-Holstein, Germany
| | - Arne Carstens
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Martin Albrecht
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Matthias Gruenewald
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Jan Höcker
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Marina Soro
- Department of Anaesthesiology and Critical Care, University Hospital Valencia, Avenida Blasco Ibanez 17, 46010, Valencia, Spain
| | - Markus Steinfath
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Jochen Renner
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105, Kiel, Germany
| | - Berthold Bein
- Department of Anaesthesiology and Intensive Care Medicine, Asklepios Hospital St. Georg, Hamburg, Germany
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Chin JH, Kim WJ, Choi JH, Han YA, Kim SO, Choi WJ. Unreliable Tracking Ability of the Third-Generation FloTrac/Vigileo™ System for Changes in Stroke Volume after Fluid Administration in Patients with High Systemic Vascular Resistance during Laparoscopic Surgery. PLoS One 2015; 10:e0142125. [PMID: 26529592 PMCID: PMC4631474 DOI: 10.1371/journal.pone.0142125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/16/2015] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The FloTrac/Vigileo™ system does not thoroughly reflect variable arterial tones, due to a lack of external calibration. The ability of this system to measure stroke volume and track its changes after fluid administration has not been fully evaluated in patients with the high systemic vascular resistance that can develop during laparoscopic surgery. METHODS In 42 patients undergoing laparoscopic prostatectomy, the stroke volume derived by the third-generation FloTrac/Vigileo™ system (SV-Vigileo), the stroke volume measured using transesophageal echocardiography (SV-TEE) as a reference method, and total systemic vascular resistance were evaluated before and after 500 ml fluid administration during pneumoperitoneum combined with the Trendelenburg position. RESULTS Total systemic vascular resistance was 2159.4 ± 523.5 dyn·s/cm5 before fluid administration. The SV-Vigileo was significantly higher than the SV-TEE both before (68.8 ± 15.9 vs. 57.0 ± 11.0 ml, P < 0.001) and after (73.0 ± 14.8 vs. 64.9 ± 12.2 ml, P = 0.003) fluid administration. During pneumoperitoneum combined with the Trendelenburg position, Bland-Altman analysis for repeated measures showed a 53.8% of percentage error between the SV-Vigileo and the SV-TEE. Four-quadrant plot (69.2% of a concordance rate) and polar plot analysis (20.6° of a mean polar angle, 16.4° of the SD of a polar angle, and ±51.5° of a radial sector containing 95% of the data points) did not indicate a good trending ability of the FloTrac/Vigileo™ system. CONCLUSIONS The third-generation FloTrac/Vigileo™ system may not be useful in patients undergoing laparoscopic surgery, based on unreliable performance in measuring the stroke volume and in tracking changes in the stroke volume after fluid administration during pneumoperitoneum combined with the Trendelenburg position.
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Affiliation(s)
- Ji-Hyun Chin
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Wook-Jong Kim
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jeong-Hyun Choi
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Yun A. Han
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seon-Ok Kim
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Woo-Jong Choi
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- * E-mail:
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Cho YJ, Koo CH, Kim TK, Hong DM, Jeon Y. Comparison of cardiac output measures by transpulmonary thermodilution, pulse contour analysis, and pulmonary artery thermodilution during off-pump coronary artery bypass surgery: a subgroup analysis of the cardiovascular anaesthesia registry at a single tertiary centre. J Clin Monit Comput 2015; 30:771-782. [DOI: 10.1007/s10877-015-9784-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 09/23/2015] [Indexed: 01/24/2023]
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Shirai A, Suzuki T, Seki T. Numerical reproduction of hemodynamics change by acupuncture on Taichong (LR-3) based on the lumped-parameter approximation model of the systemic arteries. Integr Med Res 2015; 4:161-170. [PMID: 28664122 PMCID: PMC5481802 DOI: 10.1016/j.imr.2015.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 06/23/2015] [Accepted: 06/26/2015] [Indexed: 11/24/2022] Open
Abstract
Background The aim of this study was to develop a mathematical model of blood flow in the systemic circulation to emulate the change in hemodynamics by acupuncture therapy to elucidate the mechanism of the therapy. For this purpose, as a first step, a simple model of arterial blood flow was presented to reproduce previously reported change in the blood flow volume by the acupuncture needle stimulation of Taichong (LR-3). Methods This model was based on the lumped-parameter approximation of arterial blood flow together with linear resistance of peripheral circulation. It has been reported that blood flow in the left arm was enhanced after the stimulation, yielding the peripheral vascular resistance-regulated blood flow dominated by the sympathetic nervous system. In addition to the peripheral resistance, another parameter that possibly regulates the blood flow is the cross-sectional area of the vessel. These two factors were changed to numerically examine their contributions to the blood flow based on the hypothesis that they could be changed by the stimulation. The numerical result was compared with the experimental result to confirm the validity of the hypothesis that the blood flow in the arm is regulated by the peripheral resistance. Results This model is extremely simple and the physical parameters introduced for the simulation were gleaned from different reports in the literature. It was demonstrated, however, that regulation of the peripheral resistance rather than of the cross-sectional area could reproduce the experimentally observed change in the blood flow. Moreover, the relationship between the changes in the flow volume and the systemic vascular resistance quantitatively matched the experimental data. Conclusion The present model has a potential to emulate hemodynamic change by acupuncture therapy by incorporating physiological correlation of stimulation of an acupoint and regulation of parameters that affect the hemodynamics.
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Affiliation(s)
- Atsushi Shirai
- Institute of Fluid Science, Tohoku University, Miyagi, Japan
| | - Takuya Suzuki
- Graduate School of Biomedical Engineering, Tohoku University, Miyagi, Japan
| | - Takashi Seki
- Division of Geriatric Behavioral Neurology, Tohoku University CYRIC, Miyagi, Japan
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Abstract
Although use of the classic pulmonary artery catheter has declined, several techniques have emerged to estimate cardiac output. Arterial pressure waveform analysis computes cardiac output from the arterial pressure curve. The method of estimating cardiac output for these devices depends on whether they need to be calibrated by an independent measure of cardiac output. Some newer devices have been developed to estimate cardiac output from an arterial curve obtained noninvasively with photoplethysmography, allowing a noninvasive beat-by-beat estimation of cardiac output. This article describes the different devices that perform pressure waveform analysis.
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Affiliation(s)
- Xavier Monnet
- Medical Intensive Care Unit, Bicêtre Hospital, Paris-Sud University Hospitals, 78, rue du Général Leclerc, F-94270 Le Kremlin-Bicêtre, France; EA4533, Paris-Sud University, 63 rue Gabriel Péri, F-94270 Le Kremlin-Bicêtre, France.
| | - Jean-Louis Teboul
- Medical Intensive Care Unit, Bicêtre Hospital, Paris-Sud University Hospitals, 78, rue du Général Leclerc, F-94270 Le Kremlin-Bicêtre, France; EA4533, Paris-Sud University, 63 rue Gabriel Péri, F-94270 Le Kremlin-Bicêtre, France
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Suehiro K, Tanaka K, Mikawa M, Uchihara Y, Matsuyama T, Matsuura T, Funao T, Yamada T, Mori T, Nishikawa K. Improved Performance of the Fourth-Generation FloTrac/Vigileo System for Tracking Cardiac Output Changes. J Cardiothorac Vasc Anesth 2015; 29:656-62. [DOI: 10.1053/j.jvca.2014.07.022] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Indexed: 11/11/2022]
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Monnet X, Vaquer S, Anguel N, Jozwiak M, Cipriani F, Richard C, Teboul JL. Comparison of pulse contour analysis by Pulsioflex and Vigileo to measure and track changes of cardiac output in critically ill patients. Br J Anaesth 2015; 114:235-43. [DOI: 10.1093/bja/aeu375] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Høiseth LØ, Hoff IE, Hagen OA, Landsverk SA, Kirkebøen KA. Agreement between stroke volume measured by oesophageal Doppler and uncalibrated pulse contour analysis during fluid loads in severe aortic stenosis. J Clin Monit Comput 2015; 29:435-41. [PMID: 25638514 DOI: 10.1007/s10877-015-9666-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 01/27/2015] [Indexed: 11/24/2022]
Abstract
The purpose of this analysis was to study agreement and trending of stroke volume measured by oesophageal Doppler and 3rd generation Vigileo during fluid loads in patients with severe aortic stenosis. Observational study in 32 patients (30 analyzed) scheduled for aortic valve replacement due to severe aortic stenosis. After induction of anesthesia and before start of surgery, hemodynamic registrations for 1 min were obtained before and after a fluid load. Agreement between stroke volume measured by oesophageal Doppler (SVOD) and Vigileo (SVVig) was evaluated in Bland-Altman plot and trending in four-quadrant and polar plots. Bias ± limits of agreement (LOA) between SVOD and SVVig was 24 ± 37 ml (percentage error 45%). Concordance of the two methods from before to after a fluid load was 100%. Angular bias ± LOA was 12° ± 28°. Absolute values of SVOD and SVVig agreed poorly, but changes were highly concordant during fluid loads in aortic stenosis patients. The angular agreement indicated acceptable trending. The two measurement methods are not interchangeable in patients with aortic stenosis.
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Maeda T, Yoshitani K, Inatomi Y, Ohnishi Y. Inaccuracy of the FloTrac/Vigileo™ System in Patients With Low Cardiac Index. J Cardiothorac Vasc Anesth 2014; 28:1521-6. [DOI: 10.1053/j.jvca.2014.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 11/11/2022]
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Suehiro K, Tanaka K, Matsuura T, Funao T, Yamada T, Mori T, Nishikawa K. The Vigileo-FloTracTM System: Arterial Waveform Analysis for Measuring Cardiac Output and Predicting Fluid Responsiveness: A Clinical Review. J Cardiothorac Vasc Anesth 2014; 28:1361-74. [DOI: 10.1053/j.jvca.2014.02.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Indexed: 02/03/2023]
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The ability of the Vigileo-FloTrac system to measure cardiac output and track cardiac output changes during one-lung ventilation. J Clin Monit Comput 2014; 29:333-9. [DOI: 10.1007/s10877-014-9609-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 08/27/2014] [Indexed: 01/05/2023]
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Abstract
PURPOSE OF REVIEW Advanced hemodynamic monitoring is indispensable for adequate management of patients undergoing major surgery. This article will summarize minimally invasive hemodynamic monitoring technologies and their potential use in thoracic anesthesia. RECENT FINDINGS According to their inherent principle, currently available technologies can be classified into four groups: bioimpedance and bioreactance, applied Fick's principle, pulse wave analysis and Doppler. All devices measure stroke volume and cardiac output. Functional hemodynamic variables and volumetric parameters have been integrated in some devices. Two major indications can be identified: the 'hemodynamically unstable' patient and the patient 'at risk' for hemodynamic instability. Although there is evidence for the first indication, pre-emptive hemodynamic therapy or perioperative hemodynamic optimization for the patient 'at risk' is still an issue of ongoing debate. There is a growing body of evidence that this approach can positively influence patients' outcome with less postoperative complications in selected patient groups. SUMMARY Many different minimally invasive hemodynamic monitoring devices have been developed and clinically introduced in the last years. They offer the advantage of being less invasive and easier to use. However, these techniques have several limitations and data are scarce in patients undergoing thoracic anesthesia, preventing their widespread use so far.
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Guinot PG, de Broca B, Bernard E, Arab OA, Lorne E, Dupont H. Respiratory stroke volume variation assessed by oesophageal Doppler monitoring predicts fluid responsiveness during laparoscopy. Br J Anaesth 2014; 112:660-4. [DOI: 10.1093/bja/aet430] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Semi-invasive measurement of cardiac output based on pulse contour: a review and analysis. Can J Anaesth 2014; 61:452-79. [PMID: 24643474 DOI: 10.1007/s12630-014-0135-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 02/18/2014] [Indexed: 12/21/2022] Open
Abstract
PURPOSE The aim of this review was to provide a meta-analysis of all five of the most popular systems for arterial pulse contour analysis compared with pulmonary artery thermodilution, the established reference method for measuring cardiac output (CO). The five investigated systems are FloTrac/Vigileo(®), PiCCO(®), LiDCO/PulseCO(®), PRAM/MostCare(®), and Modelflow. SOURCE In a comprehensive literature search through MEDLINE(®), Web of Knowledge (v.5.11), and Google Scholar, we identified prospective studies and reviews that compared the pulse contour approach with the reference method (n = 316). Data extracted from the 93 selected studies included range and mean cardiac output, bias, percentage error, software versions, and study population. We performed a pooled weighted analysis of their precision in determining CO in various patient groups and clinical settings. PRINCIPAL FINDINGS Results of the majority of studies indicate that the five investigated systems show acceptable accuracy during hemodynamically stable conditions. Forty-three studies provided adequate data for a pooled weighted analysis and resulted in a mean (SD) total pooled bias of -0.28 (1.25) L·min(-1), percentage error of 40%, and a correlation coefficient of r = 0.71. In hemodynamically unstable patients (n = 8), we found a higher percentage error (45%) and bias of -0.54 (1.64) L·min(-1). CONCLUSION During hemodynamic instability, CO measurement based on continuous arterial pulse contour analysis shows only limited agreement with intermittent bolus thermodilution. The calibrated systems seem to deliver more accurate measurements than the auto-calibrated or the non-calibrated systems. For reliable use of these semi-invasive systems, especially for critical therapeutic decisions during hemodynamic disorders, both a strategy for hemodynamic optimization and further technological improvements are necessary.
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Pei S, Yuan W, Mai H, Wang M, Hao C, Mi W, Fu Q. Efficacy of dynamic indices in predicting fluid responsiveness in patients with obstructive jaundice. Physiol Meas 2014; 35:369-82. [PMID: 24499723 DOI: 10.1088/0967-3334/35/3/369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Previous studies have shown that the stroke volume variation (SVV), the pulse pressure variation (PPV) and the pleth variability index (PVI) could be successfully used for predicting fluid responsiveness (FR) in surgical patients. The aim of this study was to validate the ability of SVV, PPV and PVI to predict intraoperative FR in mechanically ventilated patients with obstructive jaundice (OJ). Thirty-two patients with OJ (mean serum total bilirubin 190.5 ± 95.3 µmol L(-1)) received intraoperative volume expansion (VE) with 250 ml colloids immediately after an exploratory laparotomy had been completed and after a 5 min period of hemodynamic stability. Hemodynamic variables were recorded before and after VE. FR was defined as an increase in stroke volume index > 10% after VE. The ability of SVV, PPV and PVI to predict FR was assessed by calculation of the area under the receiver operating characteristic curve. Eleven (34%) patients were responders and 21 patients were nonresponders to VE. The PPV was the unique dynamic index that had the moderate ability to predict FR during surgical procedures, the area under the curve was 0.71 (95% CI, 0.523 to 0.856; P = 0.039) and the threshold (sensitivity and specificity) discriminated responders was 7.5% (63.6%/71.4%). The present study concluded that SVV and PVI were not reliable predictors of FR, but PPV has some value predicting FR in patients with OJ intraoperatively.
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Affiliation(s)
- Shujun Pei
- Anesthesia and Operation Center, Chinese People's Liberation Army General Hospital & Medical School of Chinese People's Liberation Army, Beijing 100853, People's Republic of China. Department of Anesthesiology, 251 Hospital of Chinese People's Liberation Army, Zhangjiakou 075000, People's Republic of China
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Metzelder SM, Coburn M, Stoppe C, Fries M, Simon TP, Reinges MHT, Höllig A, Rossaint R, Marx G, Rex S. Accuracy and precision of calibrated arterial pulse contour analysis in patients with subarachnoid hemorrhage requiring high-dose vasopressor therapy: a prospective observational clinical trial. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:R25. [PMID: 24499533 PMCID: PMC4057342 DOI: 10.1186/cc13715] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 01/30/2014] [Indexed: 12/13/2022]
Abstract
Introduction Calibrated arterial pulse contour analysis has become an established method for the continuous monitoring of cardiac output (PCCO). However, data on its validity in hemodynamically instable patients beyond the setting of cardiac surgery are scarce. We performed the present study to assess the validity and precision of PCCO-measurements using the PiCCO™-device compared to transpulmonary thermodilution derived cardiac output (TPCO) as the reference technique in neurosurgical patients requiring high-dose vasopressor-therapy. Methods A total of 20 patients (16 females and 4 males) were included in this prospective observational clinical trial. All of them suffered from subarachnoid hemorrhage (Hunt&Hess grade I-V) due to rupture of a cerebral arterial aneurysm and underwent high-dose vasopressor therapy for the prevention/treatment of delayed cerebral ischemia (DCI). Simultaneous CO measurements by bolus TPCO and PCCO were obtained at baseline as well as 2 h, 6 h, 12 h, 24 h, 48 h and 72 h after inclusion. Results PCCO- and TPCO-measurements were obtained at baseline as well as 2 h, 6 h, 12 h, 24 h, 48 h and 72 h after inclusion. Patients received vasoactive support with (mean ± standard deviation, SD) 0.57 ± 0.49 μg · kg-1 · min-1 norepinephrine resulting in a mean arterial pressure of 103 ± 13 mmHg and a systemic vascular resistance of 943 ± 248 dyn · s · cm-5. 136 CO-data pairs were analyzed. TPCO ranged from 5.2 to 14.3 l · min-1 (mean ± SD 8.5 ± 2.0 l · min-1) and PCCO ranged from 5.0 to 14.4 l · min-1 (mean ± SD 8.6 ± 2.0 l · min-1). Bias and limits of agreement (1.96 SD of the bias) were −0.03 ± 0.82 l · min-1 and 1.62 l · min-1, resulting in an overall percentage error of 18.8%. The precision of PCCO-measurements was 17.8%. Insufficient trending ability was indicated by concordance rates of 74% (exclusion zone of 15% (1.29 l · min-1)) and 67% (without exclusion zone), as well as by polar plot analysis. Conclusions In neurosurgical patients requiring extensive vasoactive support, CO values obtained by calibrated PCCO showed clinically and statistically acceptable agreement with TPCO-measurements, but the results from concordance and polar plot analysis indicate an unreliable trending ability.
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Tsai YF, Liu FC, Yu HP. FloTrac/Vigileo system monitoring in acute-care surgery: current and future trends. Expert Rev Med Devices 2014; 10:717-28. [DOI: 10.1586/17434440.2013.844464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Renner J, Scholz J, Bein B. Monitoring cardiac function: echocardiography, pulse contour analysis and beyond. Best Pract Res Clin Anaesthesiol 2013; 27:187-200. [PMID: 24012231 DOI: 10.1016/j.bpa.2013.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 06/12/2013] [Indexed: 11/25/2022]
Abstract
Haemodynamic monitoring has developed considerably over the last decades, nowadays comprising a wide spectrum of different technologies ranging from invasive to completely non-invasive techniques. At present, the evidence to continuously measure and optimise stroke volume, that is, cardiac output, in order to prevent occult hypoperfusion in the perioperative setting and consequently to improve patients' outcome is substantial. Surprisingly, there is a striking discrepancy between the developments in advanced haemodynamic monitoring combined with evidence-based knowledge on the one hand and daily clinical routine on the other hand. Recent trials have shown that perioperative mortality is higher than anticipated, emphasising the need for the speciality of anaesthesiology to face the problem and to translate proven concepts into clinical routine to improve patients' outcome. One basic principle of these concepts is to monitor and to optimise cardiac function by means of advanced haemodynamic monitoring, using echocardiography, pulse contour analysis and beyond.
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Affiliation(s)
- Jochen Renner
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105 Kiel, Germany.
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