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Dhanyee AS, Parida S, Thangaswamy CR, Jha AK, Rajappa M, Munuswamy H, Mishra SK. Relationship between difference of preoperative and cardiopulmonary bypass mean arterial pressure, and acute kidney injury in cardiac surgical patients undergoing valve surgery. Perfusion 2024:2676591231226161. [PMID: 38182129 DOI: 10.1177/02676591231226161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
BACKGROUND Modifiable and non-modifiable factors contribute to development and progression of acute kidney injury (AKI) during cardiac surgery. We hypothesized that, the difference between preoperative mean arterial pressure (MAP) and the average mean arterial pressure maintained on cardiopulmonary bypass (CPB) would be strongly predictive of AKI. We also measured plasma Neutrophil gelatinase-associated lipocalin (NGAL), to establish its association with cardiac surgery associated-AKI (CSA-AKI). METHODS One hundred and twelve high-risk patients undergoing valve, and valve plus coronary artery bypass grafting (CABG) surgery under cardiopulmonary bypass (CPB) were included in this study. Delta mean arterial pressure (MAP) was calculated as the difference between the average of pre-operative and on-bypass MAP, and blood was sampled for NGAL levels, at baseline, and 6-h after CPB. Detailed data collection was done, tabulating most of the factors which might influence development of post-operative cardiac surgery associated-AKI (CSA-AKI). To define CSA-AKI within the first 24-h post-operatively, the Kidney Disease Improving Global Outcomes (KDIGO) classification was used. RESULTS Out of 112 patients, 44 (39.3%) developed CSA-AKI postoperatively. With an ROC analysis cut-off of delta MAP of more than 25.67 mmHg, 46.4% patients developed post-operative AKI, and the average CPB flows which were 1.8 ± 0.2 were not contributory to the development of early CSA-AKI. In our study, ELISA test for human NGAL was performed on serum samples, and the estimated cut-off value of 1661 ng/mL was found to be significantly associated with early CSA-AKI. CONCLUSIONS Delta MAP and CPB flows are not related to early post-surgical CSA-AKI in cases with prior high-risk elements. However, baseline serum NGAL, as well as its percent change during the early post-surgical period independently predicted the development of CSA-AKI. This implies that, there may be patients with a higher pre-operative preponderance to develop this complication, which could actually be delineated by the use of serum NGAL estimations at baseline.
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Affiliation(s)
- Anity Singh Dhanyee
- Department of Anaesthesiology & Critical Care, Sri Balaji Vidyapeeth (Deemed-to-be-University), Mahatma Gandhi Medical College & Research Institute, Puducherry, India
| | - Satyen Parida
- Department of Anaesthesiology & Critical Care, JIPMER, Puducherry, India
| | | | - Ajay Kumar Jha
- Department of Anaesthesiology & Critical Care, JIPMER, Puducherry, India
| | - Medha Rajappa
- Department of Biochemistry, JIPMER, Puducherry, India
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Huang X, Lu X, Guo C, Lin S, Zhang Y, Zhang X, Cheng E, Liu J. Effect of preoperative risk on the association between intraoperative hypotension and postoperative acute kidney injury in cardiac surgery. Anaesth Crit Care Pain Med 2023; 42:101233. [PMID: 37061091 DOI: 10.1016/j.accpm.2023.101233] [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: 11/19/2022] [Revised: 03/25/2023] [Accepted: 04/10/2023] [Indexed: 04/17/2023]
Abstract
BACKGROUND Acute kidney injury (AKI), a common and severe complication after cardiac surgery, has been demonstrated to be associated with intraoperative hypotension (IOH). The reproducibility of this finding and whether preoperative risk modifies the association remain unclear. We hypothesised that the relationship between IOH and AKI after cardiac surgery varies by preoperative risk. METHODS We conducted a single-centre, retrospective cohort study to analyse the association between IOH and postoperative AKI by stratifying patients using preoperative risk factors. IOH was defined as a mean arterial pressure (MAP) of less than 65 mmHg and characterised by the cumulative duration and area under the curve (AUC). RESULTS Ten variables could be identified as risk factors: age, smoking status, NYHA III/Ⅳ, emergency surgery, peripheral vascular disease, cerebrovascular disease, heart failure, hypertension, previous cardiac surgery, and NT-proBNP concentration. The risk prediction model divided the patients into three equal-sized preoperative risk groups. Low-risk patients demonstrated no association between AKI and IOH of any severity, while high-risk patients demonstrated a statistically significant association between AKI and IOH with a cumulative duration greater than 104 min (adjusted odds ratio [OR]: 2.27, 95% confidence interval [CI]: 1.10-4.74; and adjusted OR: 3.63, 95% CI: 1.77-7.58) and an AUC greater than 905 mmHg min (adjusted OR: 2.08, 95% CI: 1.01-4.36; and adjusted OR: 4.00, 95% CI: 1.95-8.43). CONCLUSION IOH is a significant independent risk factor for AKI after cardiac surgery. Patients with higher baseline risk showed a more prominent relationship between IOH and postoperative AKI than low-risk patients.
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Affiliation(s)
- Xiaofan Huang
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Xian Lu
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Chunyan Guo
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Shuchi Lin
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Ying Zhang
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Xiaohan Zhang
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Erhong Cheng
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China
| | - Jindong Liu
- Department of Anaesthesiology, The Affiliated Hospital of Xuzhou Medical University, China; Jiangsu Province Key Laboratory of Anaesthesiology, Xuzhou Medical University, China; Jiangsu Province Key Laboratory of Anaesthesia and Analgesia Application Technology, Xuzhou Medical University, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, China.
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Hui V, Ho KM, Hahn R, Wright B, Larbalestier R, Pavey W. The association between intraoperative cardiopulmonary bypass power and complications after cardiac surgery. Perfusion 2023:2676591231187958. [PMID: 37442644 DOI: 10.1177/02676591231187958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
BACKGROUND Low cardiac power (product of flow and pressure) has been shown to be associated with mortality in patients with cardiogenic shock after acute myocardial infarction, but has not been studied in cardiac surgical patients. This study's hypothesis was that cardiac power during cardiopulmonary bypass for cardiac surgery would have a greater association with adverse events than either flow or MAP (mean arterial pressure) alone. METHODS We undertook a retrospective observational study using patient data from February 2015 to March 2022 undergoing cardiac surgery at Fiona Stanley Hospital in Perth Australia. Excluded were patient age less than 18 years old, patients undergoing thoracic transplantation, ventricular assist devices, off pump cardiac surgery and aortic surgery. The primary outcome was a composite outcome of 30-days mortality, stroke or new-onset renal insufficiency. RESULTS Overall, 1984 cardiac surgeries were included in the analysis. Neither duration nor area below thresholds tested for power, MAP or flow was associated with the primary composite outcome. However, we found that an area below MAP thresholds 35-50 mmHg was associated with new renal insufficiency (adjusted odds ratio 1.17 [95% CI 1.02 to 1.35] for patients spending 10 min at 10 mmHg below 50 mmHg MAP compared to those who did not). CONCLUSIONS This study suggests that MAP during cardiopulmonary bypass, but not power or flow, was an independent risk factor for adverse renal outcomes for cardiac surgical patients.
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Affiliation(s)
- Victor Hui
- Department of Anaesthesia and Pain Medicine, Royal Melbourne Hospital, Melbourne, VIC, Australia
- Heart Lung Research Institute of Western Australia, WA, Australia
| | - Kwok M Ho
- Medical School, University of Western Australia, Perth, WA, Australia
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - Rebecca Hahn
- Heart Lung Research Institute of Western Australia, WA, Australia
| | - Brian Wright
- Department of Anaesthesia, Pain and Perioperative Medicine, Fiona Stanley Hospital, Perth, WA, Australia
| | - Robert Larbalestier
- Department of Cardiothoracic Surgery, Fiona Stanley Hospital, Perth, WA, Australia
| | - Warren Pavey
- Heart Lung Research Institute of Western Australia, WA, Australia
- Department of Anaesthesia, Pain and Perioperative Medicine, Fiona Stanley Hospital, Perth, WA, Australia
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Rellum SR, Schuurmans J, Schenk J, van der Ster BJP, van der Ven WH, Geerts BF, Hollmann MW, Cherpanath TGV, Lagrand WK, Wynandts P, Paulus F, Driessen AHG, Terwindt LE, Eberl S, Hermanns H, Veelo DP, Vlaar APJ. Effect of the machine learning-derived Hypotension Prediction Index (HPI) combined with diagnostic guidance versus standard care on depth and duration of intraoperative and postoperative hypotension in elective cardiac surgery patients: HYPE-2 - study protocol of a randomised clinical trial. BMJ Open 2023; 13:e061832. [PMID: 37130670 PMCID: PMC10163508 DOI: 10.1136/bmjopen-2022-061832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/04/2023] Open
Abstract
INTRODUCTION Hypotension is common during cardiac surgery and often persists postoperatively in the intensive care unit (ICU). Still, treatment is mainly reactive, causing a delay in its management. The Hypotension Prediction Index (HPI) can predict hypotension with high accuracy. Using the HPI combined with a guidance protocol resulted in a significant reduction in the severity of hypotension in four non-cardiac surgery trials. This randomised trial aims to evaluate the effectiveness of the HPI in combination with a diagnostic guidance protocol on reducing the occurrence and severity of hypotension during coronary artery bypass grafting (CABG) surgery and subsequent ICU admission. METHODS AND ANALYSIS This is a single-centre, randomised clinical trial in adult patients undergoing elective on-pump CABG surgery with a target mean arterial pressure of 65 mm Hg. One hundred and thirty patients will be randomly allocated in a 1:1 ratio to either the intervention or control group. In both groups, a HemoSphere patient monitor with embedded HPI software will be connected to the arterial line. In the intervention group, HPI values of 75 or above will initiate the diagnostic guidance protocol, both intraoperatively and postoperatively in the ICU during mechanical ventilation. In the control group, the HemoSphere patient monitor will be covered and silenced. The primary outcome is the time-weighted average of hypotension during the combined study phases. ETHICS AND DISSEMINATION The medical research ethics committee and the institutional review board of the Amsterdam UMC, location AMC, the Netherlands, approved the trial protocol (NL76236.018.21). No publication restrictions apply, and the study results will be disseminated through a peer-reviewed journal. TRIAL REGISTRATION NUMBER The Netherlands Trial Register (NL9449), ClinicalTrials.gov (NCT05821647).
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Affiliation(s)
- Santino R Rellum
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Jaap Schuurmans
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Jimmy Schenk
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
- Department of Epidemiology & Data Science, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | | | - Ward H van der Ven
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Bart F Geerts
- Medical affairs, Healthplus.ai B.V, Amsterdam, Netherlands
| | - Markus W Hollmann
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
- Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | | | - Wim K Lagrand
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Paul Wynandts
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Frederique Paulus
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Antoine H G Driessen
- Department of Cardiothoracic Surgery, Heart Centre, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Lotte E Terwindt
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Susanne Eberl
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Henning Hermanns
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Denise P Veelo
- Department of Anesthesiology, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
| | - Alexander P J Vlaar
- Department of Intensive Care, Amsterdam UMC Locatie AMC, Amsterdam, Netherlands
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Ju JW, Yoo SJ, Park D, Bae J, Lee S, Nam K, Cho YJ, Lee HC, Jeon Y. Association between intraoperative plantar regional oxygen saturation and acute kidney injury after cardiac surgery. J Clin Monit Comput 2022; 37:525-540. [PMID: 36319881 DOI: 10.1007/s10877-022-00917-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/09/2022] [Indexed: 11/05/2022]
Abstract
Acute kidney injury (AKI) is one of the most common complications after cardiac surgery, associated with increased mortality and morbidity. Near-infrared spectroscopy (NIRS) continuously measures regional oxygen saturation(rSO2) in real-time. This exploratory retrospective study aimed to investigate the association between intraoperative plantar rSO2 and postoperative AKI in cardiac surgery patients. Between August 2019 and March 2021, 394 patients were included. Plantar and cerebral rSO2 were monitored using NIRS intraoperatively. The primary outcome was AKI within 7 postoperative days. The nonlinear association between plantar rSO2, cerebral rSO2, and mean arterial blood pressure (MBP) and AKI was assessed, and plantar rSO2<45% was related to an increased risk of AKI. Multivariable logistic regression analyses revealed that longer duration and higher area under the curve below plantar rSO2<45% and MBP<65 mmHg were more likely to be associated with increased odds of AKI. In additional multivariable regression analyses, association between plantar rSO2<45% and AKI was still maintained after adjusting the duration or AUC of MBP<65 mmHg as a covariate. Cerebral rSO2 levels were not associated with AKI. Independent of MAP, intraoperative plantar rSO2 was associated with AKI after cardiac surgery. However, intraoperative cerebral rSO2 was not associated with AKI. Intraoperative plantar rSO2 monitoring may be helpful in preventing AKI.
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Palomba H, Treml RE, Caldonazo T, Katayama HT, Gomes BC, Malbouisson LMS, Silva Junior JM. Intraoperative fluid balance and cardiac surgery-associated acute kidney injury: a multicenter prospective study. BRAZILIAN JOURNAL OF ANESTHESIOLOGY (ELSEVIER) 2022; 72:688-694. [PMID: 35917847 PMCID: PMC9659999 DOI: 10.1016/j.bjane.2022.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 07/20/2022] [Accepted: 07/24/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND Recent data suggest the regime of fluid therapy intraoperatively in patients undergoing major surgeries may interfere in patient outcomes. The development of postoperative Acute Kidney Injury (AKI) has been associated with both Restrictive Fluid Balance (RFB) and Liberal Fluid Balance (LFB) during non-cardiac surgery. In patients undergoing cardiac surgery, this influence remains unclear. The study objective was to evaluate the relationship between intraoperative RFB vs. LFB and the incidence of Cardiac-Surgery-Associated AKI (CSA-AKI) and major postoperative outcomes in patients undergoing on-pump Coronary Artery Bypass Grafting (CABG). METHODS This prospective, multicenter, observational cohort study was set at two high-complexity university hospitals in Brazil. Adult patients who required postoperative intensive care after undergoing elective on-pump CABG were allocated to two groups according to their intraoperative fluid strategy (RFB or LFB) with no intervention. RESULTS The primary endpoint was CSA-AKI. The secondary outcomes were in-hospital mortality, cardiovascular complications, ICU Length of Stay (ICU-LOS), and Hospital LOS (H-LOS). After propensity score matching, 180 patients remained in each group. There was no difference in risk of CSA-AKI between the two groups (RR = 1.15; 95% CI, 0.85-1.56, p = 0.36). The in-hospital mortality, H-LOS and cardiovascular complications were higher in the LFB group. ICU-LOS was not significantly different between the two groups. ROCcurve analysis determined a fluid balance above 2500 mL to accurately predict in-hospital mortality. CONCLUSION Patients undergoing on-pump CABG with LFB when compared with patients with RFB present similar CSA-AKI rates and ICU-LOS, but higher in-hospital mortality, cardiovascular complications, and H-LOS.
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Affiliation(s)
- Henrique Palomba
- Hospital Alemão Oswaldo Cruz, Departamento de Medicina Intensiva, São Paulo, SP, Brazil
| | - Ricardo E Treml
- Friedrich-Schiller-University, Department of Anaesthesiology and Intensive Care Medicine, Jena, Germany
| | - Tulio Caldonazo
- Friedrich-Schiller-University, Department of Cardiothoracic Surgery, Jena, Germany
| | - Henrique T Katayama
- Universidade de São Paulo, Departamento de Anestesiologia, São Paulo, SP, Brazil
| | - Brenno C Gomes
- Universidade Federal do Paraná, Departamento de Medicina Integrada, Setor de Ciências da Saúde, Curitiba, PR, Brazil
| | - Luiz M S Malbouisson
- Universidade de São Paulo, Departamento de Anestesiologia, São Paulo, SP, Brazil
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Hong L, Xu H, Ge C, Tao H, Shen X, Song X, Guan D, Zhang C. Prediction of low cardiac output syndrome in patients following cardiac surgery using machine learning. Front Med (Lausanne) 2022; 9:973147. [PMID: 36091676 PMCID: PMC9448978 DOI: 10.3389/fmed.2022.973147] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThis study aimed to develop machine learning models to predict Low Cardiac Output Syndrome (LCOS) in patients following cardiac surgery using machine learning algorithms.MethodsThe clinical data of cardiac surgery patients in Nanjing First Hospital between June 2019 and November 2020 were retrospectively extracted from the electronic medical records. Six conventional machine learning algorithms, including logistic regression, support vector machine, decision tree, random forest, extreme gradient boosting and light gradient boosting machine, were employed to construct the LCOS predictive models with all predictive features (full models) and selected predictive features (reduced models). The discrimination of these models was evaluated by the area under the receiver operating characteristic curve (AUC) and the calibration of the models was assessed by the calibration curve. Shapley Additive explanation (SHAP) and Local Interpretable Model-Agnostic Explanations (LIME) were used to interpret the predictive models.ResultsData from 1,585 patients [982 (62.0%) were male, aged 18 to 88, 212 (13.4%) with LCOS] were employed to train and validate the LCOS models. Among the full models, the RF model (AUC: 0.909, 95% CI: 0.875–0.943; Sensitivity: 0.849, 95% CI: 0.724–0.933; Specificity: 0.835, 95% CI: 0.796–0.869) and the XGB model (AUC: 0.897, 95% CI: 0.859–0.935; Sensitivity: 0.830, 95% CI: 0.702–0.919; Specificity: 0.809, 95% CI: 0.768–0.845) exhibited well predictive power for LCOS. Eleven predictive features including left ventricular ejection fraction (LVEF), first post-operative blood lactate (Lac), left ventricular diastolic diameter (LVDd), cumulative time of mean artery blood pressure (MABP) lower than 65 mmHg (MABP < 65 time), hypertension history, platelets level (PLT), age, blood creatinine (Cr), total area under curve above threshold central venous pressure (CVP) 12 mmHg and 16 mmHg, and blood loss during operation were used to build the reduced models. Among the reduced models, RF model (AUC: 0.895, 95% CI: 0.857–0.933; Sensitivity: 0.830, 95% CI: 0.702–0.919; Specificity: 0.806, 95% CI: 0.765–0.843) revealed the best performance. SHAP and LIME plot showed that LVEF, Lac, LVDd and MABP < 65 time significantly contributed to the prediction model.ConclusionIn this study, we successfully developed several machine learning models to predict LCOS after surgery, which may avail to risk stratification, early detection and management of LCOS after cardiac surgery.
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Affiliation(s)
- Liang Hong
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Huan Xu
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Chonglin Ge
- College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Hong Tao
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao Shen
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaochun Song
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Donghai Guan
- College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
- Donghai Guan,
| | - Cui Zhang
- Cardiovascular Intensive Care Unit, Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- *Correspondence: Cui Zhang,
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Dealing with endogeneity in non-randomized medical studies: a study of acute kidney injury following cardiopulmonary bypass surgery. HEALTH SERVICES AND OUTCOMES RESEARCH METHODOLOGY 2022. [DOI: 10.1007/s10742-022-00278-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Intraoperative Hypotension and Acute Kidney Injury, Stroke, and Mortality during and outside Cardiopulmonary Bypass: A Retrospective Observational Cohort Study. Anesthesiology 2022; 136:927-939. [PMID: 35188970 DOI: 10.1097/aln.0000000000004175] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In cardiac surgery, the association between hypotension during specific intraoperative phases or vasopressor-inotropes with adverse outcomes remains unclear. This study's hypothesis was that intraoperative hypotension duration throughout the surgery or when separated into hypotension during and outside cardiopulmonary bypass may be associated with postoperative major adverse events. METHODS This retrospective observational cohort study included data for adults who had cardiac surgery between 2008 and 2016 in a tertiary hospital. Intraoperative hypotension was defined as mean arterial pressure of less than 65 mmHg. The total duration of hypotension was divided into three categories based on the fraction of overall hypotension duration that occurred during cardiopulmonary bypass (more than 80%, 80 to 60%, and less than 60%). The primary outcome was a composite of stroke, acute kidney injury, or mortality during the index hospitalization. The association with the composite outcome was evaluated for duration of hypotension during the entire surgery, outside cardiopulmonary bypass, and during cardiopulmonary bypass and the fraction of hypotension during cardiopulmonary bypass adjusting for vasopressor-inotrope dose, milrinone dose, patient, and surgical factors. RESULTS The composite outcome occurred in 256 (5.1%) of 4,984 included patient records; 66 (1.3%) patients suffered stroke, 125 (2.5%) had acute kidney injury, and 109 (2.2%) died. The primary outcome was associated with total duration of hypotension (adjusted odds ratio, 1.05; 95% CI, 1.02 to 1.08; P = 0.032), hypotension outside cardiopulmonary bypass (adjusted odds ratio, 1.06; 95% CI, 1.03 to 1.10; P = 0.001) per 10-min exposure to mean arterial pressure of less than 65 mmHg, and fraction of hypotension duration during cardiopulmonary bypass of less than 60% (reference greater than 80%; adjusted odds ratio, 1.67; 95% CI, 1.10 to 2.60; P = 0.019) but not with each 10-min period hypotension during cardiopulmonary bypass (adjusted odds ratio, 1.04; 95% CI, 0.99 to 1.09; P = 0.118), fraction of hypotension during cardiopulmonary bypass of 60 to 80% (adjusted odds ratio, 1.45; 95% CI, 0.97 to 2.23; P = 0.082), or total vasopressor-inotrope dose (adjusted odds ratio, 1.00; 95% CI, 1.00 to 1.00; P = 0.247). CONCLUSIONS This study confirms previous single-center findings that intraoperative hypotension throughout cardiac surgery is associated with an increased risk of acute kidney injury, mortality, or stroke. EDITOR’S PERSPECTIVE
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Intraoperative venous congestion rather than hypotension is associated with acute adverse kidney events after cardiac surgery: a retrospective cohort study. Br J Anaesth 2022; 128:785-795. [PMID: 35249707 DOI: 10.1016/j.bja.2022.01.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The pathophysiological mechanisms by which venous congestion and hypotension lead to acute adverse kidney events after cardiac surgery with cardiopulmonary bypass have not been elucidated. We tested the hypothesis that intraoperative hypotension and venous congestion are associated with acute kidney injury and acute kidney disease. METHODS Primary exposures were venous congestion and intraoperative hypotension defined by central venous pressure ≥12, 16, or 20 mm Hg or mean arterial pressure ≤55, 65, or 75 mm Hg. The primary outcomes were acute kidney injury and acute kidney disease. Multivariable logistic regression and Cox proportional hazard models were used, adjusted for relevant confounding factors and multiple comparisons. RESULTS Of 5127 eligible subjects, 1070 (20.9%) and 327 (7.2%) developed acute kidney injury and acute kidney disease, respectively. The occurrence of acute kidney injury was statistically associated with both venous congestion and intraoperative hypotension. The cumulative incidence rate for new onset acute kidney disease was 1.34 (95% confidence interval [CI], 1.21-1.60) per 100 person-days. Acute kidney disease was significantly associated with each 10 min epoch of central venous pressure ≥12 mm Hg (hazard ratio [HR]=1.03; 99% CI, 1.01-1.06; P<0.001), ≥16 mm Hg (HR=1.04; 99% CI, 1.01-1.07; P<0.001), and ≥20 mm Hg (HR=1.07; 99% CI, 1.02-1.13; P<0.001). Venous congestion was associated with an 8-17% increased risk for de novo renal replacement therapy. In contrast, intraoperative hypotension was not associated with development of acute kidney disease. CONCLUSION Although both venous congestion and intraoperative hypotension are associated with acute kidney injury, only venous congestion correlates with acute kidney disease among patients undergoing cardiac surgery requiring cardiopulmonary bypass. The reported associations are suggestive of a pathophysiological role of venous congestion in acute kidney disease.
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Lankadeva YR, May CN, Bellomo R, Evans RG. Role of perioperative hypotension in postoperative acute kidney injury: a narrative review. Br J Anaesth 2022; 128:931-948. [DOI: 10.1016/j.bja.2022.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/17/2022] [Accepted: 03/01/2022] [Indexed: 12/20/2022] Open
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Lizano-Díez I, Poteet S, Burniol-Garcia A, Cerezales M. The burden of perioperative hypertension/hypotension: A systematic review. PLoS One 2022; 17:e0263737. [PMID: 35139104 PMCID: PMC8827488 DOI: 10.1371/journal.pone.0263737] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/25/2022] [Indexed: 11/30/2022] Open
Abstract
Study objective Our goal is to review the outcomes of acute hypertensive/hypotensive episodes from articles published in the past 10 years that assessed the short- and long-term impact of acute hypertensive/hypotensive episodes in the perioperative setting. Methods We conducted a systematic peer review based upon PROSPERO and Cochrane Handbook protocols. The following study characteristics were collected: study type, author, year, population, sample size, their definition of acute hypertension, hypotension or other measures, and outcomes (probabilities, odds ratio, hazard ratio, and relative risk) and the p-values; and they were classified according to the type of surgery (cardiac and non-cardiac). Results A total of 3,680 articles were identified, and 66 articles fulfilled the criteria for data extraction. For the perioperative setting, the number of articles varies by outcome: 20 mortality, 16 renal outcomes, 6 stroke, 7 delirium and 34 other outcomes. Hypotension was reported to be associated with mortality (OR 1.02–20.826) as well as changes from the patient’s baseline blood pressure (BP) (OR 1.02–1.36); hypotension also had a role in the development of acute kidney injury (AKI) (OR 1.03–14.11). Postsurgical delirium was found in relation with BP lability (OR 1.018–1.038) and intra- and postsurgical hypotension (OR 1.05–1.22), and hypertension (OR 1.44–2.34). Increased OR (37.67) of intracranial hemorrhage was associated to postsurgical systolic BP >130 mmHg. There was a wide range of additional diverse outcomes related to hypo-, hypertension and BP lability. Conclusions The perioperative management of BP influences short- and long-term effects of surgical procedures in cardiac and non-cardiac interventions; these findings support the burden of BP fluctuations in this setting.
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Yoon S, Park JB, Lee J, Lee HC, Bahk JH, Cho YJ. Relationship between blood pressure stability and mortality in cardiac surgery patients: retrospective cohort study. J Clin Monit Comput 2021; 35:931-942. [PMID: 33389355 DOI: 10.1007/s10877-020-00631-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 12/09/2020] [Indexed: 01/06/2023]
Abstract
Performance measurement variables can be applied in clinical practice to evaluate hemodynamic instability. This study aimed to evaluate the relationship between the performance measurement of mean arterial pressure during cardiac surgery using cardiopulmonary bypass and postoperative mortality. A retrospective cohort study of patients who underwent cardiac surgery requiring cardiopulmonary bypass between 2013 and 2016 was conducted. The median performance error (MDPE) and median absolute performance error (MDAPE) were calculated using the preoperative mean arterial pressure as a reference, and intraoperative mean arterial pressures as measured values. Multivariable logistic regression analyses were performed using performance measurement variables to predict 30-day mortality. Overall survival according to performance measurement variables was evaluated using Cox proportional hazard models and Kaplan-Meier survival curves were generated to compare survival probability. Among 1203 patients, 110 (9.1%) died after surgery, and the 30-day mortality rate was 2.3% (28/1203). After adjusting for confounders, MDPE and MDAPE were significant mean arterial pressure derived predictors of 30-day mortality and overall survival. Intraoperative hypotension measured by performance measurement variables was independently associated with 30-day and overall mortality after cardiac surgery requiring cardiopulmonary bypass. Kaplan-Meier survival curves showed lower survival probability in patients with higher MDAPE during the pre- and post- cardiopulmonary bypass periods (P < 0.001 by log-rank test). Intraoperative hypotension measured by performance measurement variables was independently associated with 30-day and overall mortality after cardiac surgery requiring CPB. We propose that performance measurement variables are useful for quantifying the degree of intraoperative hypotension and predicting survival following cardiac surgery.Trial registration: ClinicalTrials.gov, identifier: NCT03785132.
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Affiliation(s)
- Susie Yoon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jung-Bin Park
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jaehun Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Hyung-Chul Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jae-Hyon Bahk
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Youn Joung Cho
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.
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Li N, Kong H, Li SL, Zhu SN, Zhang Z, Wang DX. Intraoperative hypotension is associated with increased postoperative complications in patients undergoing surgery for pheochromocytoma-paraganglioma: a retrospective cohort study. BMC Anesthesiol 2020; 20:147. [PMID: 32532209 PMCID: PMC7291712 DOI: 10.1186/s12871-020-01066-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Dramatic hemodynamic fluctuation occurs frequently during surgery for pheochromocytoma or paraganglioma. However, the criteria of intraoperative hemodynamic instability vary widely, and most of them were defined arbitrarily but not according to patients' prognosis. The objective was to analyze the relationship between different thresholds and durations of intraoperative hyper-/hypotension and the risk of postoperative complications in patients undergoing surgery for pheochromocytoma or paraganglioma. METHODS This was a retrospective single-center cohort study performed in a tertiary care hospital from January 1, 2005 to December 31, 2017. Three hundred twenty-seven patients who underwent surgery for pheochromocytoma or paraganglioma, of which the diagnoses were confirmed by postoperative pathologic examination, were enrolled. Those who were less than 18 years, underwent surgery involving non-tumor organs, or had incomplete data were excluded. The primary endpoint was a composite of the occurrence of AKI or other complications during hospital stay after surgery. Multivariate Logistic regression models were used to analyze the association between different thresholds and durations of intraoperative hyper-/hypotension and the development of postoperative complications. RESULTS Forty three (13.1%) patients developed complications during hospital stay after surgery. After adjusting for confounding factors, intraoperative hypotension, defined as systolic blood pressure (SBP) of ≤95 mmHg for ≥20 min (OR 3.211; 99% CI 1.081-9.536; P = 0.006), SBP of ≤90 mmHg for ≥20 min (OR 3.680; 98.8% CI 1.107-12.240; P = 0.006), SBP of ≤85 mmHg for ≥10 min (OR 3.975; 98.3% CI 1.321-11.961; P = 0.003), and SBP of ≤80 mmHg for ≥1 min (OR 3.465; 95% CI 1.484-8.093; P = 0.004), were associated with an increased risk of postoperative complications. On the other hand, intraoperative hypertension was not significantly associated with the development of postoperative complications. CONCLUSIONS For patients undergoing surgery for pheochromocytoma or paraganglioma, intraoperative hypotension is associated with increased postoperative complications; and the harmful effects are level- and duration-dependent. The effects of intraoperative hypertension need to be studied further.
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Affiliation(s)
- Nan Li
- Department of Anesthesiology and Critical Care Medicine, Peking University First Hospital, No.8 Xishiku street, Beijing, 100034, China
| | - Hao Kong
- Department of Anesthesiology and Critical Care Medicine, Peking University First Hospital, No.8 Xishiku street, Beijing, 100034, China
| | - Shuang-Ling Li
- Department of Anesthesiology and Critical Care Medicine, Peking University First Hospital, No.8 Xishiku street, Beijing, 100034, China
| | - Sai-Nan Zhu
- Department of Biostatistics, Peking University First Hospital, Beijing, China
| | - Zheng Zhang
- Department of Urology, Peking University First Hospital, Beijing, China
| | - Dong-Xin Wang
- Department of Anesthesiology and Critical Care Medicine, Peking University First Hospital, No.8 Xishiku street, Beijing, 100034, China.
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Rinehart J, Cannesson M, Weeraman S, Barvais L, Obbergh LV, Joosten A. Closed-Loop Control of Vasopressor Administration in Patients Undergoing Cardiac Revascularization Surgery. J Cardiothorac Vasc Anesth 2020; 34:3081-3085. [PMID: 32434724 DOI: 10.1053/j.jvca.2020.03.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Joseph Rinehart
- Department of Anesthesiology and Perioperative Care, University of California Irvine, Irvine, CA.
| | - Maxime Cannesson
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Sashini Weeraman
- Department of Anesthesiology and Perioperative Care, University of California Irvine, Irvine, CA
| | - Luc Barvais
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Luc Van Obbergh
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexandre Joosten
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium; Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris, Le Kremlin-Bicêtre, France
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Ahuja S, Mascha EJ, Yang D, Maheshwari K, Cohen B, Khanna AK, Ruetzler K, Turan A, Sessler DI. Associations of Intraoperative Radial Arterial Systolic, Diastolic, Mean, and Pulse Pressures with Myocardial and Acute Kidney Injury after Noncardiac Surgery: A Retrospective Cohort Analysis. Anesthesiology 2020; 132:291-306. [PMID: 31939844 DOI: 10.1097/aln.0000000000003048] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Arterial pressure is a complex signal that can be characterized by systolic, mean, and diastolic components, along with pulse pressure (difference between systolic and diastolic pressures). The authors separately evaluated the strength of associations among intraoperative pressure components with myocardial and kidney injury after noncardiac surgery. METHODS The authors included 23,140 noncardiac surgery patients at Cleveland Clinic who had blood pressure recorded at 1-min intervals from radial arterial catheters. The authors used univariable smoothing and multivariable logistic regression to estimate probabilities of each outcome as function of patients' lowest pressure for a cumulative 5 min for each component, comparing discriminative ability using C-statistics. The authors further assessed the association between outcomes and both area and minutes under derived thresholds corresponding to the beginning of increased risk for the average patient. RESULTS Out of 23,140 patients analyzed, myocardial injury occurred in 6.1% and acute kidney injury in 8.2%. Based on the lowest patient blood pressure experienced for greater than or equal to 5 min, estimated thresholds below which the odds of myocardial or kidney injury progressively increased (slope P < 0.001) were 90 mmHg for systolic, 65 mmHg for mean, 50 mmHg for diastolic, and 35 mmHg for pulse pressure. Weak discriminative ability was noted between the pressure components, with univariable C-statistics ranging from 0.55 to 0.59. Area under the curve in the highest (deepest) quartile of exposure below the respective thresholds had significantly higher odds of myocardial injury after noncardiac surgery and acute kidney injury compared to no exposure for systolic, mean, and pulse pressure (all P < 0.001), but not diastolic, after adjusting for confounding. CONCLUSIONS Systolic, mean, and pulse pressure hypotension were comparable in their strength of association with myocardial and renal injury. In contrast, the relationship with diastolic pressure was poor. Baseline factors were much more strongly associated with myocardial and renal injury than intraoperative blood pressure, but pressure differs in being modifiable.
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Affiliation(s)
- Sanchit Ahuja
- From the Departments of OUTCOMES RESEARCH, (S.A., E.J.M., D.Y., K.M., B.C., A.K.K., K.R., A.T., D.I.S.) Quantitative Health Sciences (E.J.M., D.Y.) General Anesthesiology (K.M., K.R., A.T.), Cleveland Clinic, Cleveland, Ohio the Department of Anesthesiology, Pain Management and Perioperative Medicine, Henry Ford Health System, Detroit, Michigan (S.A.) the Division of Anesthesia, Critical Care, and Pain Management, Tel-Aviv Medical Center, Tel Aviv University, Tel-Aviv, Israel (B.C.) the Department of Anesthesiology, Section on Critical Care Medicine, Wake Forest School of Medicine, Wake Forest Center for Biomedical Informatics, and the Critical Injury, Illness and Recovery Research Center, Winston-Salem, North Carolina (A.K.K.)
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Terbeck S, Heinisch PP, Lenz A, Friess JO, Guensch D, Carrel T, Eberle B, Erdoes G. Levosimendan and systemic vascular resistance in cardiac surgery patients: a systematic review and meta-analysis. Sci Rep 2019; 9:20343. [PMID: 31889123 PMCID: PMC6937247 DOI: 10.1038/s41598-019-56831-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022] Open
Abstract
AbstractLevosimendan is a potent non-adrenergic inodilator agent. The net effect of hemodynamic changes may result in a hyperdynamic state with low systemic vascular resistance. We conducted a systematic review and meta-analysis assessing hemodynamics in cardiac surgery patients treated with levosimendan. English-language literature was searched systematically from 2006 until October 2018, including randomized controlled trials and case-matched or retrospective studies providing at least two sequentially measured hemodynamic variables in adult patients who underwent cardiac surgery with cardiopulmonary bypass and were treated with levosimendan in comparison to alternative drugs or devices. Cardiac index significantly increased in the levosimendan group by 0.74 (0.24 to 1.23) [standardized mean difference (95% CI); p = 0.003] from baseline to postoperative day (POD) 1, and by 0.75 (0.25 to 1.25; p = 0.003) from baseline to POD 7, when corrected for the standardized mean difference at baseline by a multivariate mixed effects meta-analysis model. With this correction for baseline differences, other hemodynamic variables including systemic vascular resistance did not significantly differ until POD 1 [−0.17 (−0.64 to 0.30), p = 0.48] and POD 7 [−0.13 (−0.61 to 0.34), p = 0.58] between the levosimendan and the comparator group. Levosimendan increases cardiac index in patients undergoing cardiac surgery. Although levosimendan has inodilator properties, this meta-analysis finds no clinical evidence that levosimendan produces vasopressor-resistant vasoplegic syndrome.
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Ortoleva J, Shapeton A, Vanneman M, Dalia AA. Vasoplegia During Cardiopulmonary Bypass: Current Literature and Rescue Therapy Options. J Cardiothorac Vasc Anesth 2019; 34:2766-2775. [PMID: 31917073 DOI: 10.1053/j.jvca.2019.12.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 11/11/2022]
Abstract
Vasoplegia syndrome in the cardiac surgical intensive care unit and postoperative period has been an area of interest to clinicians because of its prevalence and effects on morbidity and mortality. However, there is a paucity of evidence regarding the treatment of vasoplegia syndrome during cardiopulmonary bypass (on-CPB VS). This review aims to detail the incidence, outcomes, and possible treatment options for patients who develop vasoplegia during bypass. The pharmacologic rescue agents discussed are used in cases in which vasoplegia during CPB is refractory to standard catecholamine agents, such as norepinephrine, epinephrine, and phenylephrine. Methods to improve vasoplegia during CPB can be both pharmacologic and nonpharmacologic. In particular, optimization of CPB parameters plays an important nonpharmacologic role in vasoplegia during CPB. Pharmacologic agents that have been demonstrated as being effective in vasoplegia include vasopressin, terlipressin, methylene blue, hydroxocobalamin, angiotensin II (Giapreza), vitamin C, flurbiprofen (Ropion), and hydrocortisone. Although these agents have not been specifically evaluated for vasoplegia during CPB, they have shown signs of effectiveness for vasoplegia postoperatively to varying degrees. Understanding the evidence for, dosing, and side effects of these agents is crucial for cardiac anesthesiologists when treating vasoplegia during CPB bypass.
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Affiliation(s)
- Jamel Ortoleva
- Department of Anesthesiology and Perioperative Medicine, Tufts Medical Center, Boston, MA
| | - Alexander Shapeton
- Department of Anesthesia, Critical Care and Pain Medicine, Veterans Affairs Boston Healthcare System, Harvard Medical School, Boston, MA
| | - Mathew Vanneman
- Department of Anesthesiology, Pain Medicine, and Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Adam A Dalia
- Department of Anesthesiology, Pain Medicine, and Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
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Crestanello JA. Commentary: Optimal systemic arterial blood pressure after cardiac surgery. J Thorac Cardiovasc Surg 2019; 158:1380-1381. [PMID: 30772040 DOI: 10.1016/j.jtcvs.2019.01.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 01/16/2019] [Indexed: 11/19/2022]
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Smeltz AM, Cooter M, Rao S, Karhausen JA, Stafford-Smith M, Fontes ML, Kertai MD. Elevated Pulse Pressure, Intraoperative Hemodynamic Perturbations, and Acute Kidney Injury After Coronary Artery Bypass Grafting Surgery. J Cardiothorac Vasc Anesth 2018; 32:1214-1224. [DOI: 10.1053/j.jvca.2017.08.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 12/21/2022]
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