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Eerdekens GJ, Van Beersel D, Rex S, Gewillig M, Schrijvers A, Al Tmimi L. The patient with congenital heart disease in ambulatory surgery. Best Pract Res Clin Anaesthesiol 2023; 37:421-436. [PMID: 37938087 DOI: 10.1016/j.bpa.2022.11.006] [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: 10/17/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022]
Abstract
The number of patients with congenital heart disease (CHD) undergoing ambulatory surgery is increasing. Deciding whether a CHD patient is suitable for an ambulatory procedure is still challenging. Several factors must be considered, including the type of planned procedure, the complexity of the underlying pathology, the American Society of Anesthesiologists' Physical Status classification of the patient, and other patient-specific factors, including comorbidity, chronic complications of CHD, medication, coagulation disorders, and issues related to the presence of a pacemaker (PM) or cardioverter-defibrillator. Numerous studies reported higher perioperative mortality and morbidity rates in surgical patients with CHD than non-CHD patients. However, most of these studies were conducted in a cohort of hospitalized patients and may not reflect the ambulatory setting. The current review aims to provide the anesthesiologist with an overview and practical recommendations on selecting and managing a CHD patient scheduled for an ambulatory procedure.
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Affiliation(s)
- Gert-Jan Eerdekens
- Department of Anesthesiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium.
| | - Dieter Van Beersel
- Department of Anesthesiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium.
| | - Steffen Rex
- Department of Anesthesiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium; Department of Cardiovascular Sciences, KU Leuven - University of Leuven, B-3000, Leuven, Belgium
| | - Marc Gewillig
- Department of Cardiovascular Sciences, KU Leuven - University of Leuven, B-3000, Leuven, Belgium; Department of Pediatric Cardiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium.
| | - An Schrijvers
- Department of Anesthesiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium.
| | - Layth Al Tmimi
- Department of Anesthesiology, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium; Department of Cardiovascular Sciences, KU Leuven - University of Leuven, B-3000, Leuven, Belgium.
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2
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Kim J, Jung K, Moon J, Kwon J, Kang BH, Yoo J, Song S, Bang E, Kim S, Huh Y. Ketamine versus etomidate for rapid sequence intubation in patients with trauma: a retrospective study in a level 1 trauma center in Korea. BMC Emerg Med 2023; 23:57. [PMID: 37248552 DOI: 10.1186/s12873-023-00833-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/24/2023] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Ketamine and etomidate are commonly used as sedatives in rapid sequence intubation (RSI). However, there is no consensus on which agent should be favored when treating patients with trauma. This study aimed to compare the effects of ketamine and etomidate on first-pass success and outcomes of patients with trauma after RSI-facilitated emergency intubation. METHODS We retrospectively reviewed 944 patients who underwent endotracheal intubation in a trauma bay at a Korean level 1 trauma center between January 2019 and December 2021. Outcomes were compared between the ketamine and etomidate groups after propensity score matching to balance the overall distribution between the two groups. RESULTS In total, 620 patients were included in the analysis, of which 118 (19.9%) were administered ketamine and the remaining 502 (80.1%) were treated with etomidate. Patients in the ketamine group showed a significantly faster initial heart rate (105.0 ± 25.7 vs. 97.7 ± 23.6, p = 0.003), were more hypotensive (114.2 ± 32.8 mmHg vs. 139.3 ± 34.4 mmHg, p < 0.001), and had higher Glasgow Coma Scale (9.1 ± 4.0 vs. 8.2 ± 4.0, p = 0.031) and Injury Severity Score (32.5 ± 16.3 vs. 27.0 ± 13.3, p < 0.001) than those in the etomidate group. There were no significant differences in the first-pass success rate (90.7% vs. 90.1%, p > 0.999), final mortality (16.1% vs. 20.6, p = 0.348), length of stay in the intensive care unit (days) (8 [4, 15] (Interquartile range)), vs. 10 [4, 21], p = 0.998), ventilator days (4 [2, 10] vs. 5 [2, 13], p = 0.735), and hospital stay (days) (24.5 [10.25, 38.5] vs. 22 [8, 40], p = 0.322) in the 1:3 propensity score matching analysis. CONCLUSION In this retrospective study of trauma resuscitation, those receiving intubation with ketamine had greater hemodynamic instability than those receiving etomidate. However, there was no significant difference in clinical outcomes between patients sedated with ketamine and those treated with etomidate.
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Affiliation(s)
- Jinjoo Kim
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Kyoungwon Jung
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jonghwan Moon
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Junsik Kwon
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Byung Hee Kang
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jayoung Yoo
- Gyeonggi Southern Regional Trauma Centre, Ajou University Hospital, Suwon, Republic of Korea
| | - Seoyoung Song
- Gyeonggi Southern Regional Trauma Centre, Ajou University Hospital, Suwon, Republic of Korea
| | - Eunsook Bang
- Gyeonggi Southern Regional Trauma Centre, Ajou University Hospital, Suwon, Republic of Korea
| | - Sora Kim
- Gyeonggi Southern Regional Trauma Centre, Ajou University Hospital, Suwon, Republic of Korea
| | - Yo Huh
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea.
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Population pharmacokinetic and pharmacodynamic model of propofol externally validated in Korean elderly subjects. J Pharmacokinet Pharmacodyn 2022; 50:97-109. [PMID: 36522561 DOI: 10.1007/s10928-022-09836-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022]
Abstract
The Eleveld propofol pharmacokinetic (PK) model, which was developed based on a broad range of populations, showed greater bias (- 27%) in elderly subjects in a previous validation study conducted by Vellinga and colleagues. We aimed to develop and externally validate a new PK-pharmacodynamic (PK-PD) model of propofol for elderly subjects. A population PK-PD model was constructed using propofol plasma concentrations and bispectral index (BIS) values that were obtained from 31 subjects aged 65 years older in previously published phase I studies. The predictive performance of the newly-developed PK-PD model (Choi model) was assessed in a separate Korean elderly population and compared with that of the Eleveld model. A three-compartment mammillary model using an allometric expression and a sigmoid Emax model well-described the time courses of propofol concentrations and BIS values. The V1, V2, V3, Cl, Q1, Q2, E0, Emax, Ce50, γ, and ke0 of a 60-kg subject were 8.36, 58.0, 650 L, 1.26, 0.917, 0.669 L/min, 92.1, 18.7, 2.21 μg/mL, 2.89, and 0.138 /min, respectively. In the Choi model and Eleveld model, pooled biases (95% CI) of the propofol concentration were 7.78 ( 3.09-12.49) and 16.70 (9.46-23.93) and pooled inaccuracies were 22.84 (18.87-26.81) and 24.85 (18.07-31.63), respectively. The Choi PK model was less biased than the Eleveld PK model in Korean elderly subjects (age range: 65.0-79.0 yr; weight range: 45.0-75.3 kg). Our results suggest that the Choi PK model, particularly, is applicable to target-controlled infusion in non-obese Korean elderly subjects.
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Zucker M, Kagan G, Adi N, Ronel I, Matot I, Zac L, Goren O. Changes in mean systemic filling pressure as an estimate of hemodynamic response to anesthesia induction using propofol. BMC Anesthesiol 2022; 22:234. [PMID: 35869445 PMCID: PMC9306094 DOI: 10.1186/s12871-022-01773-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 07/12/2022] [Indexed: 11/29/2022] Open
Abstract
Background Even a small change in the pressure gradient between the venous system and the right atrium can have significant hemodynamic effects. Mean systemic filling pressure (MSFP) is the driving force of the venous system. As a result, MSFP has a significant effect on cardiac output. We aimed to test the hypothesis that the hemodynamic instability during induction of general anesthesia by intravenous propofol administration is caused by changes in MSFP. Methods We prospectively collected data from 15 patients undergoing major surgery requiring invasive hemodynamic monitoring. Hemodynamic parameters, including MSFP, were measured before and after propofol administration and following intubation, using venous return curves at a no-flow state induced by a pneumatic tourniquet. Results A significant decrease in MSFP was observed in all study patients after propofol administration (median (IQR) pressure 17 (9) mmHg compared with 25 (7) before propofol administration, p = 0.001). The pressure gradient for venous return (MSFP – central venous pressure; CVP) also decreased following propofol administration from 19 (8) to 12 (6) mmHg, p = 0.001. Central venous pressure did not change. Conclusions These results support the hypothesis that induction of anesthesia with propofol causes a marked reduction in MSFP. A possible mechanism of propofol-induced hypotension is reduction in preload due to a decrease in the venous vasomotor tone. Supplementary Information The online version contains supplementary material available at 10.1186/s12871-022-01773-8.
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Sattin D, Duran D, Visintini S, Schiaffi E, Panzica F, Carozzi C, Rossi Sebastiano D, Visani E, Tobaldini E, Carandina A, Citterio V, Magnani FG, Cacciatore M, Orena E, Montano N, Caldiroli D, Franceschetti S, Picozzi M, Matilde L. Analyzing the Loss and the Recovery of Consciousness: Functional Connectivity Patterns and Changes in Heart Rate Variability During Propofol-Induced Anesthesia. Front Syst Neurosci 2021; 15:652080. [PMID: 33889078 PMCID: PMC8055941 DOI: 10.3389/fnsys.2021.652080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/15/2021] [Indexed: 11/13/2022] Open
Abstract
The analysis of the central and the autonomic nervous systems (CNS, ANS) activities during general anesthesia (GA) provides fundamental information for the study of neural processes that support alterations of the consciousness level. In the present pilot study, we analyzed EEG signals and the heart rate (HR) variability (HRV) in a sample of 11 patients undergoing spinal surgery to investigate their CNS and ANS activities during GA obtained with propofol administration. Data were analyzed during different stages of GA: baseline, the first period of anesthetic induction, the period before the loss of consciousness, the first period after propofol discontinuation, and the period before the recovery of consciousness (ROC). In EEG spectral analysis, we found a decrease in posterior alpha and beta power in all cortical areas observed, except the occipital ones, and an increase in delta power, mainly during the induction phase. In EEG connectivity analysis, we found a significant increase of local efficiency index in alpha and delta bands between baseline and loss of consciousness as well as between baseline and ROC in delta band only and a significant reduction of the characteristic path length in alpha band between the baseline and ROC. Moreover, connectivity results showed that in the alpha band there was mainly a progressive increase in the number and in the strength of incoming connections in the frontal region, while in the beta band the parietal region showed mainly a significant increase in the number and in the strength of outcoming connections values. The HRV analysis showed that the induction of anesthesia with propofol was associated with a progressive decrease in complexity and a consequent increase in the regularity indexes and that the anesthetic procedure determined bradycardia which was accompanied by an increase in cardiac sympathetic modulation and a decrease in cardiac parasympathetic modulation during the induction. Overall, the results of this pilot study showed as propofol-induced anesthesia caused modifications on EEG signal, leading to a "rebalance" between long and short-range cortical connections, and had a direct effect on the cardiac system. Our data suggest interesting perspectives for the interactions between the central and autonomic nervous systems for the modulation of the consciousness level.
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Affiliation(s)
- Davide Sattin
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
- Clinical and Experimental Medicine and Medical Humanities-PhD Program, Insubria University, Varese, Italy
| | - Dunja Duran
- Clinical and Experimental Epileptology Division, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Sergio Visintini
- Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Elena Schiaffi
- Neurophysiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Ferruccio Panzica
- Clinical Engineering Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Carla Carozzi
- Department of Anaesthesia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | | | - Elisa Visani
- Clinical and Experimental Epileptology Division, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Eleonora Tobaldini
- Department of Internal Medicine, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Angelica Carandina
- Department of Internal Medicine, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Valeria Citterio
- Department of Internal Medicine, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Francesca Giulia Magnani
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Martina Cacciatore
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Eleonora Orena
- Department of Anaesthesia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Nicola Montano
- Department of Internal Medicine, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Dario Caldiroli
- Department of Anaesthesia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Silvana Franceschetti
- Neurophysiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Mario Picozzi
- Center for Clinical Ethics, Biotechnology and Life Sciences Department, Insubria University, Varese, Italy
| | - Leonardi Matilde
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
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Runte K, Brosien K, Schubert C, Nordmeyer J, Kramer P, Schubert S, Berger F, Hennemuth A, Kuehne T, Kelm M, Goubergrits L. Image-Based Computational Model Predicts Dobutamine-Induced Hemodynamic Changes in Patients With Aortic Coarctation. Circ Cardiovasc Imaging 2021; 14:e011523. [PMID: 33591212 DOI: 10.1161/circimaging.120.011523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pharmacological stress testing can help to uncover pathological hemodynamic conditions and is, therefore, used in the clinical routine to assess patients with structural heart diseases such as aortic coarctation with borderline indication for treatment. The aim of this study was to develop and test a reduced-order model predicting dobutamine stress induced pressure gradients across the coarctation. METHODS The reduced-order model was developed based on n=21 imaging data sets of patients with aortic coarctation and a meta-analysis of subjects undergoing dobutamine stress testing. Within an independent test cohort of n=21 patients with aortic coarctation, the results of the model were compared with dobutamine stress testing during catheterization. RESULTS In n=19 patients responding to dobutamine stress testing, pressure gradients across the coarctation during dobutamine stress increased from 15.7±5.1 to 33.6±10.3 mm Hg (paired t test, P<0.001). The model-predicted pressure gradients agreed with catheter measurements with a mean difference of -2.2 mm Hg and a limit of agreement of ±11.16 mm Hg according to Bland-Altman analysis. Significant equivalence between catheter-measured and simulated pressure gradients during stress was found within the study cohort (two 1-sided tests of equivalence with a noninferiority margin of 5.0 mm Hg, 33.6±10.33 versus 31.5±11.15 mm Hg, P=0.021). CONCLUSIONS The developed reduced-order model can instantly predict dobutamine-induced hemodynamic changes with accuracy equivalent to heart catheterization in patients with aortic coarctation. The method is easy to use, available as a web-based calculator, and provides a promising alternative to conventional stress testing in the clinical routine. Registration: URL: https://www.clinicaltrials.gov. Unique identifier: NCT02591940.
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Affiliation(s)
- Kilian Runte
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.)
| | - Kay Brosien
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.)
| | - Charlotte Schubert
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.)
| | - Johannes Nordmeyer
- Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.)
| | - Peter Kramer
- Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.)
| | - Stephan Schubert
- Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.).,Department of Congenital Heart Disease/Pediatric Cardiology, Heart and Diabetes Center NRW, Ruhr-University Bochum, Bad Oeynhausen, Germany (S.S.).,German Center for Cardiovascular Research, Partner Site Berlin, Germany (S.S., F.B., T.K.)
| | - Felix Berger
- Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.).,German Center for Cardiovascular Research, Partner Site Berlin, Germany (S.S., F.B., T.K.)
| | - Anja Hennemuth
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Fraunhofer Institute for Medical Image Computing-MEVIS, Bremen, Germany (A.H.)
| | - Titus Kuehne
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.).,German Center for Cardiovascular Research, Partner Site Berlin, Germany (S.S., F.B., T.K.)
| | - Marcus Kelm
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Department of Congenital Heart Disease/Pediatric Cardiology, German Heart Center Berlin, Germany (K.R., C.S., J.N., P.K., S.S., F.B., T.K., M.K.).,Berlin Institute of Health, Germany (M.K.)
| | - Leonid Goubergrits
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Germany (K.R., K.B., C.S., A.H., T.K., M.K., L.G.).,Einstein Center Digital Future, Berlin, Germany (L.G.)
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Bundgaard JS, Jacobsen PK, Grand J, Lindholm MG, Hassager C, Pehrson S, Kjaergaard J, Bundgaard H. Deep sedation as temporary bridge to definitive treatment of ventricular arrhythmia storm. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2020; 9:657-664. [DOI: 10.1177/2048872620903453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Background:
Electrical storm and incessant ventricular tachycardia (VT) are characterized by the clustering of episodes of VT or ventricular fibrillation (VF) and are associated with a poor prognosis. Autonomic nervous system activity influences VT threshold, and deep sedation may be useful for the treatment of VT emergencies.
Methods:
We reviewed data from conscious patients admitted to our intensive care unit (ICU) due to monomorphic VT, polymorphic VT or VF at our tertiary center between 2010 and 2018.
Results:
A total of 46 conscious patients with recurrent ventricular arrhythmia, refractory to initial treatment, were referred to the ICU. The majority (n = 31) were stabilized on usual care. The remaining treatment-refractory 15 patients (57 years (range 9–74), 80% males, seven with implantable cardioverter-defibrillators) with VT/VF storm (n = 11) or incessant VT (n = 4) due to ischemic heart disease (n = 10), cardiomyopathy (n = 2), primary arrhythmia (n = 2) and one patient post valve surgery, were deeply sedated and intubated. A complete resolution of VT/VF within minutes to hours was achieved in 12 patients (80%), partial resolution in two (13%) and one (7%) patient died due to ventricular free-wall rupture. One patient with recurrent VT episodes needing repeated deep sedation developed necrotic caecum. No other major complications were seen. Thirteen (87%) patients were alive after a mean follow-up of 3.7 years.
Conclusion:
Deep sedation was effective and safe for the temporary management of malignant VT/VF refractory to usual treatment. In emergencies, deep sedation may be widely accessible at both secondary and tertiary centers and a clinically useful bridge to definitive treatment of VT.
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Hattersley R, Downing F, Gibson S, Demetriou J, Elmenhorst K, Kulendra N, Mielke B, Woods S. Impact of intra-operative hypotension on mortality rates and post-operative complications in dogs undergoing cholecystectomy. J Small Anim Pract 2020; 61:624-629. [PMID: 32845022 DOI: 10.1111/jsap.13199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVES To report the mortality rate within a cohort of dogs undergoing cholecystectomy and investigate the impact of intra-operative hypotension on mortality. MATERIALS AND METHODS Clinical records at five UK referral centres were reviewed for dogs undergoing cholecystectomy. Data collected included presenting signs, pre-operative blood test results, intra-operative data including frequency and duration of hypotension and the incidence and type of post-operative complications. RESULTS Data from 119 dogs were included. Sixteen dogs (13%) died before discharge and by 28 days after surgery the total mortality was 19 dogs (17%). Hypotension lasting over 10 minutes during general anaesthesia occurred in 65 dogs (54.6%), with a mean ± sd duration of 36.1 ± 30.0 minutes. Intra-operative hypotension or the number of hypotensive episodes did not appear to be associated with in-hospital or 28-day mortality. American Society of Anaesthesiologists grade (of fitness for surgery) was significantly associated with both in-hospital and 28-day mortality on univariable analysis, as were post-operative hypoproteinaemia, ileus and pancreatitis. However on multivariable analysis, only ileus and pancreatitis were found to significantly impact mortality. CLINICAL SIGNIFICANCE Dogs presenting with a higher American Society of Anaesthesiologists grade appear to have a higher risk of mortality, although intra-operative hypotension did not appear to be part of this risk.
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Affiliation(s)
| | - F Downing
- Davies Veterinary Specialists, Hertfordshire, UK
| | - S Gibson
- Davies Veterinary Specialists, Hertfordshire, UK
| | | | - K Elmenhorst
- Anderson Moores Veterinary Specialists, Hampshire, UK
| | - N Kulendra
- North Downs Specialist Referrals, Surrey, UK
| | - B Mielke
- Royal Veterinary College, Hertfordshire, UK
| | - S Woods
- Veterinary Specialists Scotland, Livingston, UK
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9
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Wong GTC, Irwin MG. Post-induction hypotension: a fluid relationship? Anaesthesia 2020; 76:15-18. [PMID: 32609373 DOI: 10.1111/anae.15065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2020] [Indexed: 12/15/2022]
Affiliation(s)
- G T C Wong
- Department of Anaesthesiology, University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - M G Irwin
- Department of Anaesthesiology, University of Hong Kong, Queen Mary Hospital, Hong Kong, China
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10
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Epinephrine stress testing during cardiac catheterization in patients with aortic coarctation. Am Heart J 2020; 225:78-87. [PMID: 32474207 DOI: 10.1016/j.ahj.2020.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/07/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND The severity of aortic coarctation (CoA) may be underestimated during cardiac catheterization. We aimed to investigate whether epinephrine stress testing improves clinical decision making and outcome in CoA. METHODS We retrospectively evaluated CoA patients >50 kg with a peak systolic gradient (PSG) ≤20 mm Hg during cardiac catheterization who underwent epinephrine stress testing. Subsequent interventional management (stenting or balloon dilatation), complications, and medium-term clinical outcome were assessed. RESULTS Fifty CoA patients underwent cardiac catheterization with epinephrine stress testing. Patients with a high epinephrine PSG (>20 mm Hg; n = 24) were younger and more likely to have a hypertensive response to exercise compared to patients with a low epinephrine PSG (≤20 mm Hg; n = 26). In total, 21 patients (88%) with a high epinephrine PSG underwent intervention, and 20 patients (77%) with a low epinephrine PSG were treated conservatively. After a mean follow-up of 25 ± 18 months, there was a lower prevalence of hypertension in patients with a high epinephrine PSG who underwent intervention compared to patients with a low epinephrine PSG treated conservatively (19% vs. 76%; P = .001). In a multivariate model, intervention was independently associated with a 14.3-mm Hg reduction in systolic blood pressure (P = .001) and a decrease in the use of antihypertensive agents. CONCLUSIONS In CoA patients with a low baseline PSG but high epinephrine PSG, percutaneous intervention is associated with a substantial reduction in systemic blood pressure and the use of antihypertensive medication. Accordingly, epinephrine stress testing may be a useful addition in the evaluation of CoA.
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Nugent BD, Davis PJ, Noll RB, Tersak JM. Sedation practices in pediatric patients with acute lymphoblastic leukemia. Pediatr Blood Cancer 2020; 67:e28037. [PMID: 31625677 DOI: 10.1002/pbc.28037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/20/2019] [Accepted: 09/24/2019] [Indexed: 11/11/2022]
Abstract
BACKGROUND The 5-year survival for pediatric acute lymphoblastic leukemia (ALL) is greater than 90%. One late effect of pediatric ALL associated with numerous long-term difficulties is neurocognitive deficits. The experience at our institution, as well as conversations with oncologists at other institutions, suggests an increase in the use of sedation during lumbar punctures (LPs) for treatment of pediatric ALL. Among the most common Children's Oncology Group (COG) ALL protocols, approximately 30 LPs are performed over 2-3 years. Studies in animals reveal that sedation drugs may harm the developing brain. Gaps in knowledge exist regarding their use in children, particularly repeated exposures. The purpose of this study is to summarize sedation practices for LPs related to the treatment of ALL at COG institutions. METHODS Responsible Individuals (RIs) of the Cancer Control Committee of COG were invited to complete an internet-based survey about sedation practices at their institutions. RESULTS Surveys were sent to 103 RIs with a 62% response rate (N = 64). A combined 2018 new patients with ALL were seen each year (mean = 31.5, range = 3-110) at the participating institutions. The majority (96%) of children with ALL received sedation for LPs. While there was considerable variability across institutions in the type of sedation given, the most common was propofol alone (n = 36, 56%). CONCLUSIONS A substantial number of children with ALL receive sedation for LPs; however, there is variation in the medication used. Better understanding of sedation practices in children with ALL may inform future research to investigate which methods are the safest, with an emphasis on long-term neurocognitive late effects.
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Affiliation(s)
- Bethany D Nugent
- School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Peter J Davis
- School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.,UPMC Children's Hospital of Pittsburgh, Department of Anesthesiology, Pittsburgh, Pennsylvania
| | - Robert B Noll
- School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jean M Tersak
- School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.,UPMC Children's Hospital of Pittsburgh, Division of Pediatric Hematology/Oncology, Pittsburgh, Pennsylvania
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12
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Jia L, Hou J, Zheng H, Sun L, Fan Y, Wang X, Hao M, Li Y, Yang T. Study of the rational dose of propofol in elderly patients under bispectral index monitoring during total intravenous anesthesia: A PRISMA-compliant systematic review. Medicine (Baltimore) 2020; 99:e19043. [PMID: 32000452 PMCID: PMC7004673 DOI: 10.1097/md.0000000000019043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Propofol has been used widely as an anesthetic for elderly patients; however, the drug instructions only indicate that the need for maintenance of general anesthesia in elderly patients is reduced, and not the extent of the reduction. This study has summarized the usage of propofol in total intravenous anesthesia under bispectral index (BIS) monitoring and determined the optimum dosage of propofol for elderly patients. METHODS The study comprised 156 patients undergoing elective surgery under general anesthesia divided into 2 groups according to their age: the elderly group (O group) and nonelderly group (Y group). BIS monitoring was used in both groups during the operation, and propofol and remifentanil were used to maintain anesthesia. The preoperative special conditions, intraoperative maintenance of propofol, remifentanil, fentanyl, cis-atracurium, vasoactive drug use, and hemodynamic changes were summarized. RESULTS Propofol maintenance in the O group was 3.372 ± 0.774 mg/(kg h), which was significantly lesser than that in Y group (P < 0.05). The incidence of cardiovascular and cerebrovascular diseases and the use rate of vasoactive drugs in the O group were significantly higher than in the Y group (P < 0.05). CONCLUSION Propofol maintenance in the O group was significantly lower than that in the nonelderly group; this indicates that the anesthetic drug delivery rate for elderly patients should be reduced.
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Affiliation(s)
| | - Jiachen Hou
- Department of Surgery, the Second Hospital of Jilin University, Changchun City, Jilin Province, China
| | | | | | | | - Xu Wang
- Department of Anesthesiology
| | | | - Yue Li
- Department of Anesthesiology
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13
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Abstract
BACKGROUND Administration of propofol, especially rapid administration, decreases patient cardiac output (CO) to various degrees. CO might influence the buildup of an effective drug level within the neuromuscular junction and affect the onset time of neuromuscular blockers. The present study aimed to investigate the effects of different infusion rates of propofol on patient CO and the onset time of rocuronium. METHODS A total of 90 patients were randomly assigned to receive propofol (2.5 mg/kg) at an infusion rate of 480 mg/min (group A), 240 mg/min (group B), or 120 mg/min (group C). After the administration of propofol, rocuronium (0.6 mg/kg) was administered to facilitate tracheal intubation. The Finometer monitor was used to obtain the cardiovascular profile during the induction of general anesthesia. Neuromuscular relaxation was monitored by acceleromyography using the ulnar nerve at the wrist surface and electrodes with repeated single twitches. Onset time was defined as the time from the beginning of rocuronium injection until 95% twitch depression. The onset time of rocuronium in the three groups was compared using analysis of variance with the post-hoc Tukey test. A p-value <0.05 was considered statistically significant. RESULTS After induction, a significant decrease in CO was observed in group A (21.6% ± 4.6%) when compared with the findings in group B (11.6% ± 4.5%) and group C (9.8% ± 4.6%). The onset time of rocuronium was significantly longer in group A (177.7 ± 17.6 seconds) than in group B (121.3 ± 18.3 seconds) and group C (118.3 ± 12.3 seconds). CONCLUSION Rapid administration of propofol significantly delays the onset time of rocuronium by altering CO as measured with the Finometer monitor.
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Affiliation(s)
- Chia-Shiang Lin
- Department of Anesthesiology, Mackay Memorial Hospital, Taipei, Taiwan, ROC
| | - Chien-Chuan Chen
- Department of Anesthesiology, Mackay Memorial Hospital, Taipei, Taiwan, ROC
| | - Yung-Wei Hsu
- Department of Anesthesiology, Mackay Memorial Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan, ROC
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14
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Abstract
Infusion systems are complicated electromechanical systems that are used to deliver anesthetic drugs with moderate precision. Four types of systems are described-gravity feed, in-line piston, peristaltic, and syringe. These systems are subject to a number of failure modes-occlusion, disconnection, siphoning, infiltration, and air bubbles. The relative advantages of the various systems and some of the monitoring capabilities are discussed. A brief example of the use of an infusion system during anesthetic induction is presented. With understanding of the functioning of these systems, users may develop greater comfort.
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Affiliation(s)
- Jeff E Mandel
- From the Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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15
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Runte K, Brosien K, Salcher-Konrad M, Schubert C, Goubergrits L, Kelle S, Schubert S, Berger F, Kuehne T, Kelm M. Hemodynamic Changes During Physiological and Pharmacological Stress Testing in Healthy Subjects, Aortic Stenosis and Aortic Coarctation Patients-A Systematic Review and Meta-Analysis. Front Cardiovasc Med 2019; 6:43. [PMID: 31024935 PMCID: PMC6467940 DOI: 10.3389/fcvm.2019.00043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/22/2019] [Indexed: 12/20/2022] Open
Abstract
Introduction: Exercise testing has become a diagnostic standard in the evaluation and management of heart disease. While different methods of exercise and pharmacological stress testing exist, only little is known about their comparability. We aimed to assess hemodynamic changes during dynamic exercise, isometric exercise, and dobutamine stress testing at different stress intensities in healthy subjects and patients with aortic stenosis (AS) and aortic coarctation (CoA). Methods: A systematic literature search (PROSPERO 2017:CRD42017078608) in MEDLINE of interventional trials was conducted to identify eligible studies providing evidence of changes in hemodynamic parameters under different stress conditions acquired by MRI or echocardiography. A random effects model was used to estimate pooled mean changes in hemodynamics. Results: One hundred and twenty-eight study arms with a total of 3,139 stress-examinations were included. In healthy subjects/(where available) in AS, pooled mean changes (95% CIs) during light dynamic stress were 31.78 (27.82–35.74) bpm in heart rate (HR) and 6.59 (2.58–10.61) ml in stroke volume (SV). Changes during light pharmacological stress were 13.71 (7.87–19.56)/14.0 (9.82–18.18) bpm in HR, and 5.47 (0.3–10.63)/8.0 (3.82–12.18) ml in SV. Changes during light isometric stress were 18.44 (10.74–26.14)/5.0 (−1.17–11.17) bpm in HR and −4.17 (−14.37–6.03)/−4.0 (−16.43–8.43) ml in SV. Changes during moderate dynamic stress were 49.57 (40.03–59.1)/46.45 (42.63–50.27) bpm in HR and 11.64 (5.87–17.42) ml in SV. During moderate pharmacological stress, changes in HR were 42.83 (36.94–48.72)/18.66 (2.38–34.93) bpm and in SV 6.29 (−2.0–14.58)/13.11 (7.99–18.23) ml. During high intensity dynamic stress changes in HR were 89.31 (81.46–97.17)/55.32 (47.31–63.33) bpm and in SV 21.31 (13.42–29.21)/−0.96 (−5.27–3.35) ml. During high pharmacological stress, changes in HR were 53.58 (36.53–70.64)/42.52 (32.77–52.28) bpm, and in SV 0.98 (−9.32–11.27)/14.06 (−1.62–29.74) ml. HR increase and age were inversely correlated at high stress intensities. In CoA, evidence was limited to single studies. Conclusion: This systematic review and meta-analysis presents pooled hemodynamic changes under light, moderate and high intensity exercise and pharmacological stress, while considering the potential influence of age. Despite limited availability of comparative studies, the reference values presented in this review allow estimation of the expected individual range of a circulatory response in healthy individuals and patients with AS and may contribute to future study planning and patient-specific models even when stress testing is contraindicated.
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Affiliation(s)
- Kilian Runte
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany
| | - Kay Brosien
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Maximilian Salcher-Konrad
- Personal Social Services Research Unit, London School of Economics and Political Science, London, United Kingdom.,LSE Health, London School of Economics and Political Science, London, United Kingdom
| | - Charlotte Schubert
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany
| | - Leonid Goubergrits
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Kelle
- Department of Internal Medicine/Cardiology, German Heart Center Berlin, Berlin, Germany.,Department of Internal Medicine/Cardiology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,German Center for Cardiovascular Research, Partner Site Berlin, Berlin, Germany
| | - Stephan Schubert
- Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany.,German Center for Cardiovascular Research, Partner Site Berlin, Berlin, Germany
| | - Felix Berger
- Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany.,German Center for Cardiovascular Research, Partner Site Berlin, Berlin, Germany
| | - Titus Kuehne
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany.,German Center for Cardiovascular Research, Partner Site Berlin, Berlin, Germany
| | - Marcus Kelm
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany
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16
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Abstract
Intracerebral hemorrhage (ICH) is responsible for approximately 15% of strokes annually in the United States, with nearly 1 in 3 of these patients dying without ever leaving the hospital. Because this disproportionate mortality risk has been stagnant for nearly 3 decades, a main area of research has been focused on the optimal strategies to reduce mortality and improve functional outcomes. The acute hypertensive response following ICH has been shown to facilitate ICH expansion and is a strong predictor of mortality. Rapidly reducing blood pressure was once thought to induce cerebral ischemia, though has been found to be safe in certain patient populations. Clinicians must work quickly to determine whether specific patient populations may benefit from acute lowering of systolic blood pressure (SBP) following ICH. This review provides nurses with a summary of the available literature on blood pressure control following ICH. It focuses on intravenous and oral antihypertensive medications available in the United States that may be utilized to acutely lower SBP, as well as medications outside of the antihypertensive class used during the acute setting that may reduce SBP.
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17
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Uryga A, Burzyńska M, Tabakow P, Kasprowicz M, Budohoski KP, Kazimierska A, Smielewski P, Czosnyka M, Goździk W. Baroreflex sensitivity and heart rate variability are predictors of mortality in patients with aneurysmal subarachnoid haemorrhage. J Neurol Sci 2018; 394:112-119. [PMID: 30245190 DOI: 10.1016/j.jns.2018.09.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/24/2018] [Accepted: 09/11/2018] [Indexed: 01/09/2023]
Abstract
OBJECT We aimed to investigate the link between the autonomic nervous system (ANS) impairment, assessed using baroreflex sensitivity (BRS) and heart rate variability (HRV) indices, and mortality after aneurysmal subarachnoid haemorrhage (aSAH). METHODS A total of 57 patients (56 ± 18 years) diagnosed with aSAH were retrospectively enrolled in the study, where 25% of patients died in the hospital. BRS was calculated using a modified cross-correlation method. Time- and frequency-domain HRV indices were calculated from a time-series of systolic peak intervals of arterial blood pressure signals. Additionally, cerebral autoregulation (CA) was assessed using the mean velocity index (Mxa), where Mxa > 0 indicates impaired CA. RESULTS Both BRS and HRV indices were lower in non-survivors than in survivors. The patients with disturbed BRS and HRV had more extensive haemorrhage in the H-H scale (p = .040) and were more likely to die (p = .013) when compared to patients with the intact ANS. The logistic regression model for mortality included: the APACHE II score (p = .002; OR 0.794) and the normalised high frequency power of the HRV (p < <.001; OR 0.636). A positive relationship was found between the Mxa and BRS (R = 0.48, p = .003), which suggests that increasing BRS is moderately strongly associated with worsening CA. CONCLUSION Our results indicated that lower values of HRV indices and BRS correlate with mortality and that there is a link between cerebral dysautoregulation and the analysed estimates of the ANS in aSAH patients.
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Affiliation(s)
- Agnieszka Uryga
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland.
| | - Małgorzata Burzyńska
- Department of Anesthesiology and Intensive Care, Wroclaw Medical University, Wroclaw, Poland
| | - Paweł Tabakow
- Department of Neurosurgery, Wroclaw Medical University, Wroclaw, Poland
| | - Magdalena Kasprowicz
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Karol P Budohoski
- Brain Physics Laboratory, Department of Clinical Neurosciences, Division of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Agnieszka Kazimierska
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Peter Smielewski
- Brain Physics Laboratory, Department of Clinical Neurosciences, Division of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Marek Czosnyka
- Brain Physics Laboratory, Department of Clinical Neurosciences, Division of Neurosurgery, University of Cambridge, Cambridge, UK; Institute of Electronic Systems, Faculty of Electronics and Information Technology, Warsaw University of Technology, Warsaw, Poland
| | - Waldemar Goździk
- Department of Anesthesiology and Intensive Care, Wroclaw Medical University, Wroclaw, Poland
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18
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Myocardial Dysfunction and Shock after Cardiac Arrest. BIOMED RESEARCH INTERNATIONAL 2015; 2015:314796. [PMID: 26421284 PMCID: PMC4572400 DOI: 10.1155/2015/314796] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 06/28/2015] [Indexed: 01/12/2023]
Abstract
Postarrest myocardial dysfunction includes the development of low cardiac output or ventricular systolic or diastolic dysfunction after cardiac arrest. Impaired left ventricular systolic function is reported in nearly two-thirds of patients resuscitated after cardiac arrest. Hypotension and shock requiring vasopressor support are similarly common after cardiac arrest. Whereas shock requiring vasopressor support is consistently associated with an adverse outcome after cardiac arrest, the association between myocardial dysfunction and outcomes is less clear. Myocardial dysfunction and shock after cardiac arrest develop as the result of preexisting cardiac pathology with multiple superimposed insults from resuscitation. The pathophysiology involves cardiovascular ischemia/reperfusion injury and cardiovascular toxicity from excessive levels of inflammatory cytokine activation and catecholamines, among other contributing factors. Similar mechanisms occur in myocardial dysfunction after cardiopulmonary bypass, in sepsis, and in stress-induced cardiomyopathy. Hemodynamic stabilization after resuscitation from cardiac arrest involves restoration of preload, vasopressors to support arterial pressure, and inotropic support if needed to reverse the effects of myocardial dysfunction and improve systemic perfusion. Further research is needed to define the role of postarrest myocardial dysfunction on cardiac arrest outcomes and identify therapeutic strategies.
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19
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Propofol effect on cerebral oxygenation in children with congenital heart disease. Pediatr Cardiol 2015; 36:543-9. [PMID: 25311762 DOI: 10.1007/s00246-014-1047-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
Abstract
Propofol is a short-acting, intravenously administered hypnotic agent which is used in procedural sedation in children. Propofol is known to decrease systemic vascular resistance, arterial blood pressure and can lead to desaturations and decreased systemic perfusion in children with cardiac shunting. This may result in a reduction in cerebral blood flow and oxygenation. Near-infrared spectroscopy (NIRS) can monitor cerebral tissue oxygenation in the frontal neocortex. The objective of our study was to measure the changes in cerebral oxygen and blood supply after Propofol infusion in children with congenital heart disease. Propofol infusion may reduce cerebral oxygenation in children with congenital heart disease. The study group consisted of 32 children (f:m = 18:14), with median age of 49 (5-112) months and median weight of 15 (5-34) kg. We performed NIRS derived continuous measurement of cerebral oxygenation and cardiac output using Electrical velocimetry for 5 min before and after sedation with Propofol (1-2 mg/kg i.v.) for cardiac catheterization. Simultaneously, non-invasive arterial blood pressure and transcutaneous oxygen saturation were measured. Propofol sedation led to a significant decrease in mean arterial pressure (79 ± 16 vs. 67 ± 12 mmHg) (p = 0.01) and cardiac index (3.2 ± 0.8 vs. 2.9 ± 0.6 ml/min/m(2)) (p = 0.03). In contrast, cerebral tissue oxygenation index, increased significantly from 57 ± 11 to 59 ± 10 % (p < 0.05). Sedation with Propofol increased cerebral tissue oxygenation despite a decrease in cardiac index and arterial blood pressure. This may be caused by a decreased oxygen consumption of the sedated brain with intact cerebral auto-regulation.
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20
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Hwang WJ, Park CO, Lee Y. Alternating asystole and atrial fibrillation after infusion of propofol and remifentanil with target-controlled infusion. Korean J Anesthesiol 2014; 67:S32-3. [PMID: 25598897 PMCID: PMC4295971 DOI: 10.4097/kjae.2014.67.s.s32] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Won-jung Hwang
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Chan Oh Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Yoonki Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
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21
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Poser H, Semplicini L, De Benedictis GM, Gerardi G, Contiero B, Maschietto N, Valerio E, Milanesi O, Semplicini A, Bernardini D. Two-dimensional, M-mode and Doppler-derived echocardiographic parameters in sedated healthy growing female sheep. Lab Anim 2013; 47:194-202. [PMID: 23760962 DOI: 10.1177/0023677213486895] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Despite the fact that sheep are a widely used animal model in cardiovascular research, reference values for transthoracic echocardiography in normal growing animals are not available. Eight healthy female lambs underwent two-dimensional, M-mode and pulsed wave Doppler echocardiographic examination at 100 days of age and every three months thereafter over a 12-month period. The study was conducted under sedation with midazolam, butorphanol and constant rate infusion of intravenous propofol. Their growth phase was completed at about one year of age. All the echocardiographic parameters considered were significantly correlated with body weight and age class except for the left ventricular systolic and diastolic diameters. Functional indices were not correlated to body weight or age except for the E-point to septal separation distance (EPSS). Doppler-derived parameters were not influenced by independent variables. Transthoracic echocardiography can be considered an applicable method for cardiovascular research using a growing lamb animal model after appropriate adjustments for age and body size.
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Affiliation(s)
- H Poser
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy.
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22
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Yang HS, Song BG, Kim JY, Kim SN, Kim TY. Impact of propofol anesthesia induction on cardiac function in low-risk patients as measured by intraoperative Doppler tissue imaging. J Am Soc Echocardiogr 2013; 26:727-35. [PMID: 23622885 DOI: 10.1016/j.echo.2013.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Indexed: 12/19/2022]
Abstract
BACKGROUND Despite a few experimental studies showing a dose-dependent myocardial depressive effect of propofol anesthesia induction, few clinical data are available to determine its precise impact on myocardial function, probably because of its brevity and a lack of appropriate evaluation tools. The purpose of this study was to examine the impact of propofol-based anesthesia induction on left ventricular (LV) function using Doppler tissue and speckle-tracking imaging. METHODS In 19 low-risk patients with normal LV systolic and diastolic function undergoing noncardiac surgery (all women; mean age, 42 years), propofol bolus (2.0 mg/kg) was administered intravenously for anesthesia induction. LV ejection fraction, global peak systolic longitudinal strain, and tissue Doppler-derived indices of mitral annular velocity during systole (S'), early diastole (e'), and atrial contraction (a') were determined by intraoperative transthoracic echocardiography before and 1, 3, and 5 min after propofol bolus (T0, T1, T2, and T3, respectively). RESULTS The following at T1, T2, and T3 were significantly less in magnitude than at T0: septal S' (5.61, 5.61, and 5.51 vs 7.60 cm/sec, P < .001), lateral S' (5.75, 5.89, and 5.94 vs 8.12 cm/sec, P < .001), septal e' (10.10, 10.26, and 10.07 vs 11.4 cm/sec, P < .01), septal a' (6.70, 6.21, and 6.13 vs 8.58 cm/sec, P < .01), lateral a' (7.29, 6.81, and 6.85 vs 9.01 cm/sec, P < .01), and longitudinal strain (-19.36%, -19.71%, and -19.61% vs -22.28%, P < .001). LV ejection fraction was not significantly changed (P = .361). CONCLUSIONS Propofol anesthesia induction diminished LV and atrial contraction in low-risk patients with prior normal LV function. Further studies are needed to understand the clinical implications, particularly for higher risk populations.
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Affiliation(s)
- Hyun Suk Yang
- Department of Cardiovascular Medicine, Konkuk University Medical Center, Seoul, Korea
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23
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Devabhakthuni S, Armahizer MJ, Dasta JF, Kane-Gill SL. Analgosedation: A Paradigm Shift in Intensive Care Unit Sedation Practice. Ann Pharmacother 2012; 46:530-40. [DOI: 10.1345/aph.1q525] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: To critically evaluate the use of analgosedation in the management of agitation in critically ill mechanically ventilated patients. Data Sources: Literature was accessed through MEDLINE (1948-November 2011) and Cochrane Library (2011, issue 1) using the terms analgosedation, analgosedation, or analgesia-based sedation alone or in combination with intensive care unit or critically ill. Reference lists of related publications were also reviewed. Study Selection and Data Extraction: All articles published in English were evaluated. Randomized controlled trials examining critically ill mechanically ventilated patients older than 18 years were included. Data Synthesis: Limitations of current sedation practices include serious adverse drug events, prolonged mechanical ventilation time, and intensive care unit (ICU) length of stay. Studies have demonstrated that analgosedation, a strategy that manages patient pain and discomfort first, before providing sedative therapy, results in improved patient outcomes compared to standard sedative-hypnotic regimens. Nine randomized controlled trials comparing remifentanil-based analgosedation to other commonly used agents (fentanyl, midazolam, morphine, and propofol) for ICU sedation and 1 trial comparing morphine to daily sedation interruption with propofol or midazolam were reviewed. Remifentanil is an ideal agent for analgosedation due to its easy titratability and organ-in dependent metabolism. When compared to sedative-hypnotic regimens, remifentanil-based regimens were associated with shorter duration of mechanical ventilation, more rapid weaning from the ventilator, and shorter ICU length of stay. Compared to fentanyl-based regimens, remifentanil had similar efficacy with the exception of increased pain requirements upon remifentanil discontinuation. Analgosedation was well tolerated, with no significant differences in hemodynamic stability compared to sedative-hypnotic regimens. Conclusions: Analgosedation is an efficacious and well-tolerated approach to management of ICU sedation with improved patient outcomes compared to sedative-hypnotic approaches. Additional well-designed trials are warranted to clarify the role of analgosedation in the management of ICU sedation, including trials with nonopioid analgesics.
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Affiliation(s)
- Sandeep Devabhakthuni
- University of Pittsburgh Medical Center, Pittsburgh, PA; now, Assistant Professor of Pharmacy Practice and Science, School of Pharmacy, University of Maryland, Baltimore
| | - Michael J Armahizer
- University of Pittsburgh Medical Center; how, Critical Care Pharmacy Specialist, Cardiothoracic Intensive Care Unit, University of Pittsburgh Medical Center
| | - Joseph F Dasta
- The Ohio State University, Columbus; Adjunct Professor, The University of Texas, Austin
| | - Sandra L Kane-Gill
- Center for Pharmacoinformatics and Outcomes Research, University of Pittsburgh
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24
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Bilotta F, Rosa G. Remifentanil or alfentanil for endotracheal intubation. Anesth Pain Med 2012; 1:277-8. [PMID: 24904819 PMCID: PMC4018707 DOI: 10.5812/aapm.3465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 11/11/2011] [Accepted: 11/13/2011] [Indexed: 11/16/2022] Open
Affiliation(s)
- Federico Bilotta
- Department of Anesthesiology, Critical Care and Pain Medicine, Sapienza University of Rome, Rome, Italy
- Corresponding author: Federico Bilotta, Department of Anesthesiology, Critical Care and Pain Medicine, Sapienza University of Rome, Rome, Italy. Tel: +39-3393370822, E-mail:
| | - Giovanni Rosa
- Department of Anesthesiology, Critical Care and Pain Medicine, Sapienza University of Rome, Rome, Italy
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Propofol increases the Ca2+ sensitivity of BKCa in the cerebral arterial smooth muscle cells of mice. Acta Pharmacol Sin 2012; 33:19-26. [PMID: 22101171 DOI: 10.1038/aps.2011.134] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
AIM Propofol has the side effect of hypotension especially in the elderly and patients with hypertension. Previous studies suggest propofol-caused hypotension results from activation of large conductance Ca(2+)-sensitive K channels (BKCa). In this study, the effects of propofol on the Ca(2+) sensitivity of BKCa were investigated in mice cerebral arterial smooth muscle cells. METHODS Single smooth muscle cells were prepared from the cerebral arteries of mice. Perforated whole-cell recoding was conducted to investigate the whole-cell BKCa current and spontaneous transient outward K(+) current (STOC). Inside-out patch configuration was used to record the single channel current and to study the Ca(2+)- and voltage-dependence of BKCa. RESULTS Propofol (56 and 112 μmol/L) increased the macroscopic BKCa and STOC currents in a concentration-dependent manner. It markedly increased the total open probability (NPo) of single BKCa channel with an EC(50) value of 76 μmol/L. Furthermore, propofol significantly decreased the equilibrium dissociation constant (K(d)) of Ca(2+) for BKCa channel. The K(d) value of Ca(2+) was 0.881 μmol/L in control, and decreased to 0.694, 0.599 and 0.177 μmol/L, respectively, in the presence of propofol 28, 56 and 112 μmol/L. An analysis of the channel kinetics revealed that propofol (112 μmol/L) significantly increased the open dwell time and decreased the closed dwell time, which stabilized BKCa channel in the open state. CONCLUSION Propofol increases the Ca(2+) sensitivity of BKCa channels, thus lowering the Ca(2+) threshold of the channel activation in arterial smooth muscle cells, which causes greater vasodilating effects.
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In vivo and ex vivo effects of propofol on myocardial performance in rats with obstructive jaundice. BMC Gastroenterol 2011; 11:144. [PMID: 22204383 PMCID: PMC3276443 DOI: 10.1186/1471-230x-11-144] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 12/28/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Responsiveness of the "jaundiced heart" to propofol is not completely understood. The purpose of this study was to evaluate the effect of propofol on myocardial performance in rats with obstructive jaundice. METHODS Male Sprague-Dawley rats (n = 40) were randomly allocated into two groups, twenty underwent bile duct ligation (BDL), and 20 underwent a sham operation. Seven days after the surgery, propofol was administered in vivo and ex vivo (Langendorff preparations). Heart rate, left ventricular end-systolic pressure (LVESP) left ventricular end-diastolic pressure (LVEDP), and maximal rate for left ventricular pressure rise and decline (± dP/dtmax ) were measured to determine the influence of propofol on the cardiac function of rats. RESULTS Impaired basal cardiac function was observed in the isolated BDL hearts, whereas in vivo indices of basal cardiac function (LVESP and ± dP/dt) in vivo were significantly higher in rats that underwent BDL compared with controls. With low or intermediate concentrations of propofol, these indices of cardiac function were within the normal physiologic range in both groups, and responsiveness to propofol was unaffected by BDL. When the highest concentration of propofol was administrated, a significant decline in cardiac function was observed in the BDL group. CONCLUSIONS In rats that underwent BDL, basal cardiac performance was better in vivo and worse ex vivo compared with controls. Low and intermediate concentrations of propofol did not appear to impair cardiac function in rats with obstructive jaundice.
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Remifentanil or Alfentanil for Endotracheal Intubation. Anesth Pain Med 2011. [DOI: 10.5812/anesthpain.3465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Bilotta F, Doronzio A, Stazi E, Titi L, Zeppa IO, Cianchi A, Rosa G, Paoloni FP, Bergese S, Asouhidou I, Ioannou P, Abramowicz AE, Spinelli A, Delphin E, Ayrian E, Zelman V, Lumb P. Early postoperative cognitive dysfunction and postoperative delirium after anaesthesia with various hypnotics: study protocol for a randomised controlled trial--the PINOCCHIO trial. Trials 2011; 12:170. [PMID: 21733178 PMCID: PMC3155116 DOI: 10.1186/1745-6215-12-170] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 07/06/2011] [Indexed: 11/28/2022] Open
Abstract
Background Postoperative delirium can result in increased postoperative morbidity and mortality, major demand for postoperative care and higher hospital costs. Hypnotics serve to induce and maintain anaesthesia and to abolish patients' consciousness. Their persisting clinical action can delay postoperative cognitive recovery and favour postoperative delirium. Some evidence suggests that these unwanted effects vary according to each hypnotic's specific pharmacodynamic and pharmacokinetic characteristics and its interaction with the individual patient. We designed this study to evaluate postoperative delirium rate after general anaesthesia with various hypnotics in patients undergoing surgical procedures other than cardiac or brain surgery. We also aimed to test whether delayed postoperative cognitive recovery increases the risk of postoperative delirium. Methods/Design After local ethics committee approval, enrolled patients will be randomly assigned to one of three treatment groups. In all patients anaesthesia will be induced with propofol and fentanyl, and maintained with the anaesthetics desflurane, or sevoflurane, or propofol and the analgesic opioid fentanyl. The onset of postoperative delirium will be monitored with the Nursing Delirium Scale every three hours up to 72 hours post anaesthesia. Cognitive function will be evaluated with two cognitive test batteries (the Short Memory Orientation Memory Concentration Test and the Rancho Los Amigos Scale) preoperatively, at baseline, and postoperatively at 20, 40 and 60 min after extubation. Statistical analysis will investigate differences in the hypnotics used to maintain anaesthesia and the odds ratios for postoperative delirium, the relation of early postoperative cognitive recovery and postoperative delirium rate. A subgroup analysis will be used to categorize patients according to demographic variables relevant to the risk of postoperative delirium (age, sex, body weight) and to the preoperative score index for delirium. Discussion The results of this comparative anaesthesiological trial should whether each the three hypnotics tested is related to a significantly different postoperative delirium rate. This information could ultimately allow us to select the most appropriate hypnotic to maintain anaesthesia for specific subgroups of patients and especially for those at high risk of postoperative delirium. Registered at Trial.gov Number ClinicalTrials.gov: NCT00507195
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Affiliation(s)
- Federico Bilotta
- Department of Anaesthesiology, Critical Care and Pain Medicine, Sapienza University of Rome, Policlinico Umberto I, Rome, Italy.
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Chow SL, Houseman D, Phung T, French WJ. Transient acute decompensated heart failure following propofol and fentanyl administration in a healthy 19-year-old patient. CONGESTIVE HEART FAILURE (GREENWICH, CONN.) 2010; 16:80-81. [PMID: 20412475 DOI: 10.1111/j.1751-7133.2009.00125.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Sheryl L Chow
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, USA.
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Turek Z, Sykora R, Matejovic M, Cerny V. Anesthesia and the Microcirculation. Semin Cardiothorac Vasc Anesth 2009; 13:249-58. [DOI: 10.1177/1089253209353134] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is increasing evidence that the microcirculation and its regulation are severely compromised during many pathological conditions, such as hemorrhage, sepsis, or trauma. The effects of anesthetic agents on macrohemodynamics were investigated intensively in the last several decades. Research regarding modern anesthetics and anesthesia techniques has increased knowledge regarding the nonanesthetic effects of anesthetic agents, including those on organ perfusion and the microcirculation. Alterations in microvascular reactivity, nitric oxide pathways, and cytokine release are presumably the main mechanisms of anesthetic-induced tissue perfusion changes. This review summarizes current methods of microcirculatory status assessment and current knowledge regarding the microcirculatory effects of intravenous and potent volatile anesthetics and anesthesia-related techniques under both normal and pathophysiological conditions.
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Affiliation(s)
- Zdenek Turek
- University Hospital Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic,
| | - Roman Sykora
- Charles University in Prague, Faculty of Medicine in Pilsen, Czech Republic, Department of Anesthesiology and Intensive Care, Hospital Karlovy Vary, Czech Republic
| | - Martin Matejovic
- Charles University in Prague, Faculty of Medicine in Pilsen, Czech Republic, University Affiliated Hospital Plzen
| | - Vladimir Cerny
- University Hospital Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
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de la Morena G, Saura D, Oliva MJ, Soria F, Gonzalez J, Garcia M, Moreno V, Bonaque JC, Valdes M. Real-time three-dimensional transoesophageal echocardiography in the assessment of aortic valve stenosis. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY 2009; 11:9-13. [DOI: 10.1093/ejechocard/jep154] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Lopes P, Nunes N, Sousa M, Paula D, Carareto R, Nishimori C, Santos P, Camacho A. Efeitos de diferentes FiO2 sobre variáveis ecocardiográficas em cães submetidos à infusão contínua de propofol. ARQ BRAS MED VET ZOO 2009. [DOI: 10.1590/s0102-09352009000200010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Avaliaram-se os efeitos do fornecimento de diferentes frações inspiradas de oxigênio (FiO2) em cães anestesiados com infusão contínua de propofol e mantidos em ventilação espontânea sobre os parâmetros ecocardiográficos, obtidos em modo M. Oito cães adultos foram submetidos a cinco protocolos anestésicos diferenciando um do outro pela FiO2 fornecida ao paciente. Formaram-se cinco grupos denominados G100 (FiO2=1), G80 (FiO2=0,8), G60 (FiO2=0,6), G40 (FiO2=0,4) e G20 (FiO2=0,21). Os animais foram induzidos à anestesia com propofol na dose necessária para intubação e, ato contínuo, iniciou-se a infusão do fármaco. Os cães receberam oxigênio conforme a FiO2 determinada para cada grupo. As primeiras mensurações foram efetuadas antes da administração do fármaco (M0), aos 30 minutos (M30) após o início da infusão do anestésico e a cada 15 minutos (M45, M60, M75 e M90) durante 60 minutos. Para espessura do septo interventricular ao final da sístole (ESIVs) registrada em M60, a média de G100 foi maior do que as obtidas de G60 e G20. Em M30, o espessamento fracional da parede livre do ventrículo esquerdo (ELPVE) de G100 foi menor que de G80, e, em M75, G80 foi maior que G40. Em relação ao índice de volume ventricular esquerdo ao final da sístole (IVVEFs), em M45, G40 foi maior que G80. Conclui-se que as variáveis ecocardiográficas estudadas não são afetadas pelo emprego de diferentes FiO2.
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Koerber JP, Roberts GEW, Whitaker R, Thorpe CM. Variation in rapid sequence induction techniques: current practice in Wales. Anaesthesia 2009; 64:54-9. [DOI: 10.1111/j.1365-2044.2008.05681.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim HS, Chang WC, Hwang KC, Choi IG, Park WK. Effect of propofol on calcium homeostasis in hypoxia-reoxygenated neonatal rat cardiomyocytes. Eur J Pharmacol 2008; 594:139-45. [DOI: 10.1016/j.ejphar.2008.07.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 07/03/2008] [Accepted: 07/10/2008] [Indexed: 11/28/2022]
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Koch M, De Backer D, Vincent J, Barvais L, Hennart D, Schmartz D. Effects of propofol on human microcirculation. Br J Anaesth 2008; 101:473-8. [DOI: 10.1093/bja/aen210] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Larsen JR, Torp P, Norrild K, Sloth E. Propofol reduces tissue-Doppler markers of left ventricle function: a transthoracic echocardiographic study. Br J Anaesth 2007; 98:183-8. [PMID: 17251211 DOI: 10.1093/bja/ael345] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Propofol is thought to minimally depress myocardial function, but mainly to reduce blood pressure by vasodilation. Transthoracic tissue-Doppler echocardiography (TDE) is a novel, validated method of quantifying myocardial function. It provides new insight into myocardial function by measuring myocardial motion. We examined the effects of propofol upon myocardial function by measuring changes in left ventricle function by TDE. METHODS We assessed change in myocardial function in propofol anaesthetized ASA I patients tissue tracking displacement (TTD) before anaesthesia onset and repeated measurements after a single propofol bolus dose. Tissue tracking score (TTS), a marker of ejection fraction, was also used (n = 10). RESULTS Propofol 1.5-2 mg kg(-1) significantly attenuated PSV from 5.64 (1.17) to 4.66 (0.55) cm s(-1) (P < 0.0001) and TTD from 10.2 (2.1) to 8.5 (1.4) mm (P = 0.0091), whereas TTP was unchanged [all data: mean (SD)]. TTS declined from 7.2 (1.3) to 6.1 (0.6) mm (P < 0.01). Non-invasive mean blood pressure declined 17% (P < 0.0001). CONCLUSIONS The results indicate that myocardial contractile function is compromised concomitantly with reduced cyclic displacement after propofol dosing. Blood pressure declined accordingly. From these results, it is impossible to ascertain whether this was secondary to reduced cardiac filling or a consequence of a direct negative inotropic action of propofol, but it represents a left-shift of the Starling curve. The novel TDE yields new information on myocardial velocities and motion.
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Affiliation(s)
- J R Larsen
- Department of Anaesthesiology and Intensive Care, Skejby Sygehus, Aarhus University Hospital, DK-8200 Aarhus N, Denmark.
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Bovill JG. Intravenous anesthesia for the patient with left ventricular dysfunction. Semin Cardiothorac Vasc Anesth 2006; 10:43-8. [PMID: 16703233 DOI: 10.1177/108925320601000108] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Patients with heart failure have a diminished cardiac reserve capacity that may be further compromised by anesthesia. In addition to depression of sympathetic activity, most anaesthetics interfere with cardiovascular performance, either by a direct myocardial depression or by modifying cardiovascular control mechanisms. Etomidate causes the least cardiovascular depression. It is popular for induction of anesthesia in cardiac-compromised patients; however, it is not suitable for maintenance of anesthesia because it depresses adrenocortical function. Ketamine has a favorable cardiovascular profile related to central sympathetic stimulation and inhibition of neuronal catecholamine uptake. These counteract its direct negative inotropic effect. In patients with a failing myocardium, however, the negative inotropic effects may be unmasked, resulting in deterioration in cardiac performance and cardiovascular instability. Propofol is the most popular intravenous anesthetic for maintenance of anesthesia. It does have a negative inotropic effect, but the net effect on myocardial contractility is insignificant at clinical concentrations, probably because of a simultaneous increase in the sensitivity of the myofilaments to Ca2+. Propofol protects the myocardium against ischemia-reperfusion injury, an action derived from its antioxidant and free-radical-scavenging properties as well as the related inhibition of the mitochondrial permeability transition pore. For intravenous anesthesia, propofol is always combined with an opioid. Opioids have relatively few cardiovascular side effects and, in particular, do not cause myocardial depression. Indeed, they are cardioprotective, with antiarrhythmic activity, and induce pharmacologic preconditioning of the myocardium by a mechanism similar to the inhalational anesthetics.
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Affiliation(s)
- J G Bovill
- Department of Anaessthesiology, Leiden University Medical Centre, The Netherlands.
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Baumert JH, Falter F, Eletr D, Hecker KE, Reyle-Hahn M, Rossaint R. Xenon anaesthesia may preserve cardiovascular function in patients with heart failure. Acta Anaesthesiol Scand 2005; 49:743-9. [PMID: 15954952 DOI: 10.1111/j.1399-6576.2005.00662.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND The hypothesis that xenon anaesthesia provided haemodynamic stability was tested in patients with heart failure in a prospective, randomized, single-blind design. METHODS Twenty-six patients scheduled for implantation of a cardioverter-defibrillator (ICD) received xenon 60-65% in oxygen (xenon group, n = 12) or propofol 3 mg/kg/h (propofol group, n = 14), both combined with remifentanil 0.2 microg/kg/min. After induction of anaesthesia with etomidate and remifentanil, heart rate (HR), mean arterial pressure (MAP) and left ventricular ejection fraction (LVEF) were recorded. After 60 min of propofol or xenon anaesthesia, the same parameters were recorded. RESULTS While HR decreased in both groups, MAP was unchanged with xenon (73 vs. 76 mmHg) and decreased with propofol (from 78 to 64 mmHg, P < 0.02). LVEF was stable in both groups [32% vs. 37%, xenon (NS), and 30% vs. 34%, propofol (NS)]. Preload, as measured by end-diastolic volume (EDV), did not change (66 vs. 63 ml with xenon; 79 vs. 81 ml with propofol, both NS). Afterload, as determined by end-systolic pressure-volume product (ESPV), decreased with propofol (6760 vs. 4920 ml mmHg) but not with xenon (4060 vs. 3780 ml mmHg, P < 0.01 between groups). CONCLUSION With propofol, MAP is reduced and LVEF is not increased in spite of reduced afterload. In contrast, MAP and LVEF are maintained with xenon.
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Affiliation(s)
- J-H Baumert
- Klinik fuer Anesthesiologie, Universitaetsklinikum Aachen, Germany.
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Van Poucke GE, Bravo LJB, Shafer SL. Target controlled infusions: targeting the effect site while limiting peak plasma concentration. IEEE Trans Biomed Eng 2004; 51:1869-75. [PMID: 15536889 DOI: 10.1109/tbme.2004.827935] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Target controlled infusion (TCI) systems are available commercially worldwide, except in North America. Existing systems target the plasma drug concentration, which may be less than ideal because the plasma is not the site of drug effect. The commonly accepted existing algorithm to target the site of drug effect results in high plasma concentrations, which may increase the acute hemodynamic effects of intravenous anesthetic drugs. METHODS A novel mathematical algorithm is proposed for controlling the effect site concentration using a TCI device. The algorithm limits the peak plasma concentration, thereby slowing the onset of anesthetic drug effect but potentially ameliorating side effects. Simulations are used to examine the delay in time to peak effect for fentanyl, alfentanil, sufentanil, remifentanil, and propofol when the peak plasma concentration is limited by the algorithm. RESULTS The plasma overshoot required of the previously proposed algorithm to control the site of drug effect can be reduced by 60% with only about a 20% delay in the onset of drug effect. CONCLUSIONS Concerns about the high plasma concentrations that result from targeting the effect site with a TCI device can be addressed by reducing the peak plasma concentration by as much as 60% with only a very modest increase in time to peak effect.
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Abstract
Intravenous anaesthetic agents are generally remarkably safe. However, it is clear that propofol infusion syndrome is a real, albeit rare, entity. This often lethal syndrome of metabolic acidosis, acute cardiomyopathy and skeletal myopathy is strongly associated with infusions of propofol at rates of 5 mg/kg/hour and greater for more than 48 hours. There is evidence to support the hypothesis that the syndrome is caused by the failure of free fatty acid metabolism due to inhibition of free fatty acid entry into the mitochondria and also specific sites in the mitochondrial respiratory chain. The syndrome therefore mimics the mitochondrial myopathies. Midazolam causes seizure-like activity in very-low-birthweight premature infants requiring the drug prior to tracheal intubation or during prolonged positive pressure ventilation. This can be successfully reversed with the specific benzodiazepine antagonist flumazenil. Midazolam can also cause paradoxical reactions, including increased agitation, poor co-operation and aggressive or violent behaviour, which has been successfully managed with flumazenil.
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Affiliation(s)
- Timothy G Short
- Department of Anaesthesia, Auckland Hospital, Park Road, Grafton, Auckland I, New Zealand
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Borghi B, Casati A, Iuorio S, Celleno D, Michael M, Serafini P, Pusceddu A, Fanelli G. Frequency of hypotension and bradycardia during general anesthesia, epidural anesthesia, or integrated epidural-general anesthesia for total hip replacement. J Clin Anesth 2002; 14:102-6. [PMID: 11943521 DOI: 10.1016/s0952-8180(01)00362-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
STUDY OBJECTIVE To evaluate the frequency of hypotension and bradycardia during integrated epidural-general anesthesia as compared with general anesthesia or epidural anesthesia alone. DESIGN Prospective, randomized, open, multicenter study. SETTING Inpatient anesthesia at 7 University or Hospital Departments of anesthesia. PATIENTS 210 ASA physical status I, II, and III patients undergoing elective total hip replacement. INTERVENTIONS Using a balanced randomization method, each hospital enrolled 30 consecutive patients who received integrated epidural-general anesthesia, epidural anesthesia, or general anesthesia. MEASUREMENTS AND MAIN RESULTS Occurrence of clinically relevant hypotension (systolic arterial blood pressure (BP) decrease >30% from baseline), or bradycardia (heart rate (HR) <45 bpm) requiring pharmacologic treatment were recorded, as well as routine cardiovascular parameters. Clinically relevant hypotension during induction of nerve block was reported in 13 patients receiving epidural block (18%) and 16 patients receiving epidural-general anesthesia (22%) (p = 0.67). Subsequently, 22 of the remaining 54 patients in the epidural-general anesthesia group (41%) developed hypotension after the induction of general anesthesia, as compared with 16 patients of the general anesthesia group (23%) (p = 0.049). No differences in HR or in frequency of bradycardia were observed in the three groups. CONCLUSIONS The induction of general anesthesia in patients with an epidural block up to T10 increased the odds of developing clinically relevant hypotension as compared with those patients who received no epidural block, and was associated with a twofold increase of the odds of hypotension as compared with the use of epidural anesthesia alone.
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