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Smith A, Turoczi Z, Al-Subaie N, Zilahi G. Postoperative Hypotension After Cardiac Surgery Is Associated With Acute Kidney Injury. J Cardiothorac Vasc Anesth 2024; 38:1683-1688. [PMID: 38879370 DOI: 10.1053/j.jvca.2024.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/30/2024] [Accepted: 04/17/2024] [Indexed: 07/16/2024]
Abstract
OBJECTIVES To describe the incidence of postoperative hypotension in patients undergoing cardiac surgery during the first 12 hours in the intensive care unit (ICU) and any relationship between hypotension and the development of acute kidney injury (AKI). DESIGN This was a retrospective, observational cohort study. SETTING The study took place in a single-center tertiary teaching hospital in London, UK. PARTICIPANTS Adult patients (n = 100) who underwent elective cardiac surgery requiring intraoperative cardiopulmonary bypass between May and November 2021 were enrolled. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS A hypotensive event was defined as mean arterial pressure <65 mmHg lasting at least 1 minute. Invasive blood pressure data was analyzed for the first 12 hours after surgery, and any association between postoperative hypotension and AKI was assessed. A total of 91% of patients experienced hypotension in the first 12 hours postprocedure. On average, patients experienced 9 hypotensive events, with events lasting an average of 5 minutes. A total of 16 patients (16%) developed at least stage 1 AKI. The average duration of hypotension was significantly higher in the AKI group (4.6 min [IQR 3.3, 8.0] v 8.1 min [IQR 5.2, 14.2], p = 0.029). Those suffering AKI had longer ICU and hospital stays. CONCLUSIONS This study demonstrated that hypotension in the first 12 hours following cardiac surgery is common and prolonged hypotensive events are associated with developing AKI. This emphasizes the importance of treating hypotension aggressively and highlights a target for further research and intervention.
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Affiliation(s)
- Alexander Smith
- Cardiothoracic Intensive Care Unit, St George's University Hospital NHS Foundation Trust, London, United Kingdom.
| | - Zsolt Turoczi
- Cardiothoracic Intensive Care Unit, St George's University Hospital NHS Foundation Trust, London, United Kingdom
| | - Nawaf Al-Subaie
- Cardiothoracic Intensive Care Unit, St George's University Hospital NHS Foundation Trust, London, United Kingdom
| | - Gabor Zilahi
- Cardiothoracic Intensive Care Unit, St George's University Hospital NHS Foundation Trust, London, United Kingdom
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Heily M, Gerdtz M, Jarden RJ, Yap CY, Darvall J, Coventry AE, Rogers A, Vernon J, Bellomo R. Agitation during anaesthetic emergence: An observational study of adult cardiac surgery patients in two Australian intensive care units. Aust Crit Care 2024; 37:67-73. [PMID: 37919133 DOI: 10.1016/j.aucc.2023.09.003] [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: 06/16/2023] [Revised: 08/21/2023] [Accepted: 09/05/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Anaesthetic emergence agitation among adult patients being recovered after open cardiac and/or thoracic aorta surgery has not been described. OBJECTIVES The objective of this study was to characterise emergence agitation in terms of incidence, clinical features, and consequences in a cohort of cardiac surgery patients being recovered in the intensive care unit (ICU). METHODS A prospective, observational pilot study was implemented. Over a 5-week period, the study was conducted in two metropolitan hospitals in Victoria, Australia. The cohort comprised all patients admitted to the ICUs aged ≥18 years, who had undergone cardiac surgery via an open sternotomy with general anaesthetic, and whose emergence was directly observed. Emergence agitation was defined as a Richmond Agitation and Sedation Scale score of ≥+2. RESULTS Fifty patients were observed. Emergence agitation occurred in 24/50 (48%) of patients. Patients with emergence agitation experienced more clinical consequences than patients with calm emergence, including a significantly greater number of episodes of airway compromise (12/24, 50%, p < 0.001); ventilator dyssynchrony (23/24, 96%, p = 0.004); and hypertension (13/24, 54%, p = 0.004). Significant treatment interference (potentially dangerous patient movements such as pulling tubes) occurred with 23/24 patients (96%, p < 0.0001). Patients who underwent emergence agitation required significantly more interventions during anaesthetic emergence than patients who underwent a calm emergence. Interventions included extra nursing measures (16/24, 67%, p = 0.001) administration of sedative and/or opioid intravenous boluses (22/24, 92%, p = 0.001) and vasoactive agents (15/24, 63%, p = 0.05). CONCLUSIONS In patients recovering from cardiac surgery in the ICU, emergence agitation was clinically important. Immediate interventions were required to prevent and manage complications.
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Affiliation(s)
- Meredith Heily
- Intensive Care Unit, The Royal Melbourne Hospital, Grattan St, Parkville 3050, Australia; Department of Nursing, Faculty of Medicine, Dentistry & Health Sciences, University of Melbourne, Level 6, Alan Gilbert Building, 161 Barry St, Carlton, 3010, Australia.
| | - Marie Gerdtz
- Department of Nursing, Faculty of Medicine, Dentistry & Health Sciences, University of Melbourne, Level 6, Alan Gilbert Building, 161 Barry St, Carlton, 3010, Australia.
| | - Rebecca J Jarden
- Department of Nursing, Faculty of Medicine, Dentistry & Health Sciences, University of Melbourne, Level 6, Alan Gilbert Building, 161 Barry St, Carlton, 3010, Australia; Austin Health, Melbourne, Australia.
| | - Celene Yl Yap
- Department of Nursing, Faculty of Medicine, Dentistry & Health Sciences, University of Melbourne, Level 6, Alan Gilbert Building, 161 Barry St, Carlton, 3010, Australia.
| | - Jai Darvall
- Intensive Care Unit & Department of Anaesthetics, The Royal Melbourne Hospital, Grattan St, Parkville, 3050, Australia; Department of Critical Care, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Grattan St, Parkville, 3010, Australia.
| | - Andrew Ej Coventry
- Intensive Care Unit, The Royal Melbourne Hospital, Grattan St, Parkville 3050, Australia.
| | - Amy Rogers
- Intensive Care Unit, The Royal Melbourne Hospital, Grattan St, Parkville 3050, Australia.
| | - Julie Vernon
- Intensive Care Unit, The Royal Melbourne Hospital, Grattan St, Parkville 3050, Australia.
| | - Rinaldo Bellomo
- Intensive Care Unit, The Royal Melbourne Hospital, Grattan St, Parkville 3050, Australia; Department of Critical Care, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Grattan St, Parkville, 3010, Australia; Intensive Care Unit, Austin Health, Australia.
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Chinawong C, Utriyaprasit K, Sindhu S, Viwatwongkasem C, Suksompong S. Factors Influencing Pre-Cardiopulmonary Arrest Signs among Post-General Surgery Patients in Critical Care Service System. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:876. [PMID: 36613197 PMCID: PMC9819579 DOI: 10.3390/ijerph20010876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/22/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Health service system factors can lead to pre-cardiopulmonary arrest signs (pre-CA), which refer to a critical condition in the body leading to a circulatory and respiratory system disruption. The purpose of this study was to assess the incidence rate of an event leading to pre-cardiopulmonary arrest signs within the first 24 h, and also to analyze the factors influencing the health service system in critical post-general surgery patients in the intensive care unit. These results of the study found the incidence rate of pre-CA was 49.05 per 1000 person-hours, especially 1 h after admission to the ICU. Hemodynamic instability, respiratory instability, and neurological alteration were the most common pre-CA symptoms. The patient factors associated with high pre-CA arrest sign scores were the age from 18-40 years, with an operation status as emergency surgery, elective surgery compared with urgent surgery, and the interaction of operation status and age in critical post-general surgery patients. The organization factors found advanced hospital level and nurse allocation were associated with pre-CA. To improve quality of care for critical post-general surgery patients, critical care service delivery should be delegated to nurses with nurse allocation and critical care nursing training. Guidelines must be established for critically ill post-general surgery patient care.
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Affiliation(s)
| | | | - Siriorn Sindhu
- Faculty of Nursing, Mahidol University, Bangkok 10700, Thailand
| | | | - Sirilak Suksompong
- Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Cengic S, Zuberi M, Bansal V, Ratzlaff R, Rodrigues E, Festic E. Hypotension after intensive care unit drop-off in adult cardiac surgery patients. World J Crit Care Med 2020; 9:20-30. [PMID: 32577413 PMCID: PMC7298587 DOI: 10.5492/wjccm.v9.i2.20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/08/2020] [Accepted: 05/14/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hypotension is a frequent complication in the intensive care unit (ICU) after adult cardiac surgery.
AIM To describe frequency of hypotension in the ICU following adult cardiac surgery and its relation to the hospital outcomes.
METHODS A retrospective study of post-cardiac adult surgical patients at a tertiary academic medical center in a two-year period. We abstracted baseline demographics, comorbidities, and all pertinent clinical variables. The primary predictor variable was the development of hypotension within the first 30 min upon arrival to the ICU from the operating room (OR). The primary outcome was hospital mortality, and other outcomes included duration of mechanical ventilation (MV) in hours, and ICU and hospital length of stay in days.
RESULTS Of 417 patients, more than half (54%) experienced hypotension within 30 min upon arrival to the ICU. Presence of OR hypotension immediately prior to ICU transfer was significantly associated with ICU hypotension (odds ratio = 1.9; 95% confidence interval: 1.21-2.98; P < 0.006). ICU hypotensive patients had longer MV, 5 (interquartile ranges 3, 15) vs 4 h (interquartile ranges 3, 6), P = 0.012. The patients who received vasopressor boluses (n = 212) were more likely to experience ICU drop-off hypotension (odds ratio = 1.45, 95% confidence interval: 0.98-2.13; P = 0.062), and they experienced longer MV, ICU and hospital length of stay (P < 0.001, for all).
CONCLUSION Hypotension upon anesthesia-to-ICU drop-off is more frequent than previously reported and may be associated with adverse clinical outcomes.
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Affiliation(s)
- Sabina Cengic
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
- Department of General Surgery, Stadtspital Triemli, Zurich 8063, Switzerland
| | - Muhammad Zuberi
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
| | - Vikas Bansal
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
| | - Robert Ratzlaff
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
| | - Eduardo Rodrigues
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
| | - Emir Festic
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL 32224, United States
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ICU Pad Project: application of modern computer technology in pediatric postoperative cardiac intensive care. Pilot study. POLISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2016; 13:83-9. [PMID: 27212989 PMCID: PMC4860445 DOI: 10.5114/kitp.2016.58975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 05/04/2015] [Accepted: 02/19/2016] [Indexed: 11/17/2022]
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Nobahar M. Competence of nurses in the intensive cardiac care unit. Electron Physician 2016; 8:2395-404. [PMID: 27382450 PMCID: PMC4930260 DOI: 10.19082/2395] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 03/01/2016] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Competence of nurses is a complex combination of knowledge, function, skills, attitudes, and values. Delivering care for patients in the Intensive Cardiac Care Unit (ICCU) requires nurses' competences. This study aimed to explain nurses' competence in the ICCU. METHODS This was a qualitative study in which purposive sampling with maximum variation was used. Data were collected through semi-structured interviews with 23 participants during 2012-2013. Interviews were recorded, transcribed verbatim, and analyzed by using the content-analysis method. RESULTS The main categories were "clinical competence," comprising subcategories of 'routine care,' 'emergency care,' 'care according to patients' needs,' 'care of non-coronary patients', as well as "professional competence," comprising 'personal development,' 'teamwork,' 'professional ethics,' and 'efficacy of nursing education.' CONCLUSION The finding of this study revealed dimensions of nursing competence in ICCU. Benefiting from competence leads to improved quality of patient care and satisfaction of patients and nurses and helps elevate nursing profession, improve nursing education, and clinical nursing.
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Affiliation(s)
- Monir Nobahar
- Associate Professor, Nursing Care Research Center, Faculty of Nursing and Allied Health, Semnan University of Medical Sciences, Semnan, Iran
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Lopes CT, Brunori EFR, Cavalcante AMRZ, Moorhead SA, Swanson E, Lopes JDL, de Barros ALBL. Factors associated with excessive bleeding after cardiac surgery: A prospective cohort study. Heart Lung 2016; 45:64-69.e2. [DOI: 10.1016/j.hrtlng.2015.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 09/13/2015] [Accepted: 09/14/2015] [Indexed: 12/23/2022]
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Lopes CT, Brunori EHFR, Santos VB, Moorhead SA, Lopes JDL, de Barros ALBL. Predictive factors for bleeding-related re-exploration after cardiac surgery: A prospective cohort study. Eur J Cardiovasc Nurs 2015; 15:e70-7. [PMID: 25888608 DOI: 10.1177/1474515115583407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 03/31/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Bleeding-related re-exploration is a life-threatening complication after cardiac surgery. Nurses must be aware of important risk factors for this complication so that their assessment, monitoring and evaluation activities can be prioritized, focused and anticipated. AIMS To identify the predictive factors for bleeding-related re-exploration after cardiac surgery and to describe the sources of postoperative bleeding. METHODS This is a prospective cohort study at a tertiary cardiac school-hospital in São Paulo/SP, Brazil. Adult patients (n=323) submitted to surgical correction of acquired cardiac diseases were included. Potential risk factors for bleeding-related re-exploration within the 24 hours following admission to the intensive care unit were investigated in the patients' charts. A univariate analysis and a multiple analysis through logistic regression were conducted to identify the outcome predictors. The area under the receiver-operating characteristic curve was calculated as a measure of accuracy considering the cut-off points with the highest sensitivity and specificity. RESULTS The univariate factors significantly associated with bleeding-related re-exploration were a lower preoperative platelet count, a lower number of bypasses in coronary artery bypass surgery and postoperatively, a lower body temperature, infusion of lower intravenous volume, a higher positive end-expiratory pressure during mechanical ventilation and transfusion of blood products. The independent predictors of bleeding-related re-exploration included postoperative red blood cell transfusion, and transfusion of fresh frozen plasma, platelet or cryoprecipitate units. These predictors had a sensitivity of 87.5%, a specificity of 99.28% and an accuracy of 97.93%. CONCLUSIONS Blood product transfusion postoperatively is an independent predictor of bleeding-related re-exploration. Surgical errors prevailed as sources of bleeding.
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Affiliation(s)
- Camila T Lopes
- Paulista Nursing School, Federal University of Sao Paulo (EPE-UNIFESP), Brazil
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Kilpatrick K. Understanding acute care nurse practitioner communication and decision-making in healthcare teams. J Clin Nurs 2012; 22:168-79. [DOI: 10.1111/j.1365-2702.2012.04119.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Denaï MA, Mahfouf M, Ross JJ. A hybrid hierarchical decision support system for cardiac surgical intensive care patients. Part I: Physiological modelling and decision support system design. Artif Intell Med 2008; 45:35-52. [PMID: 19112012 DOI: 10.1016/j.artmed.2008.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2007] [Revised: 09/02/2008] [Accepted: 11/06/2008] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To develop a clinical decision support system (CDSS) that models the different levels of the clinician's decision-making strategies when controlling post cardiac surgery patients weaned from cardio pulmonary bypass. METHODS A clinical trial was conducted to define and elucidate an expert anesthetists' decision pathway utilised in controlling this patient population. This data and derived knowledge were used to elicit a decision-making model. The structural framework of the decision-making model is hierarchical, clearly defined, and dynamic. The decision levels are linked to five important components of the cardiovascular physiology in turn, i.e. the systolic blood pressure (SBP), central venous pressure (CVP), systemic vascular resistance (SVR), cardiac output (CO), and heart rate (HR). Progress down the hierarchy is dependent upon the normalisation of each physiological parameter to a value pre-selected by the clinician via fluid, chronotropes or inotropes. Since interventions at each and every level cause changes and disturbances in the other components, the proposed decision support model continuously refers back decision outcomes back to the SBP which is considered to be the overriding supervisory safety component in this hierarchical decision structure. The decision model was then translated into a computerised decision support system prototype and comprehensively tested on a physiological model of the human cardiovascular system. This model was able to reproduce conditions experienced by post-operative cardiac surgery patients including hypertension, hypovolemia, vasodilation and the systemic inflammatory response syndrome (SIRS). RESULTS In all the simulated patients scenarios considered the CDSS was able to initiate similar therapeutic interventions to that of the expert, and as a result, was also able to control the hemodynamic parameters to the prescribed target values.
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Affiliation(s)
- Mouloud A Denaï
- Department of Automatic Control & Systems Engineering, University of Sheffield, Mappin Street, Sheffield, United Kingdom
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Currey J, Browne J, Botti M. Haemodynamic instability after cardiac surgery: nurses' perceptions of clinical decision-making. J Clin Nurs 2006; 15:1081-90. [PMID: 16911048 DOI: 10.1111/j.1365-2702.2006.01392.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Cardiac surgical patients are distinguished by their potential for instability in the early postoperative period, highly invasive haemodynamic monitoring technologies and unique clinical presentations as a result of undergoing cardiopulmonary bypass. Little is known about nurses' perceptions of assuming responsibility for such patients. An understanding of nurses' perceptions may identify areas of practice that can be improved and assist in determining the adequacy of current decision supports. AIM The aim of this study was to describe critical care nurses' perceptions of assuming responsibility for the nursing management of cardiac patients in the initial two-hour postoperative period. DESIGN An exploratory descriptive study based on naturalistic decision-making. METHODS Thirty-eight nurses were interviewed immediately following a two-hour observation of their clinical practice. Content analysis and a systematic thematic analysis process called 'Framework' were used to analyse the interview transcripts. RESULTS Nurses described their perceptions of managing patients in terms of how they felt about making decisions for complex cardiac surgical patients and in terms of how clinical processes unique to the admission phase impacted their decision-making. Nurses felt either daunted or stimulated and challenged when making decisions. Nurses identified handover from anaesthetists, settling in procedures and forms of collegial assistance as important processes that impacted their decision-making. CONCLUSION Nurses' previous experiences with similar patients influenced how they felt about making decisions during the initial two-hour postoperative period, but did not alter their views about processes important for patient safety during this time. RELEVANCE TO CLINICAL PRACTICE Feelings expressed by nurses in this study highlight the need for clinical supervision and appropriate allocation of resources during the immediate recovery period after cardiac surgery. Nurses identified ways to improve clinical processes that impacted their decision-making during the immediate recovery of cardiac surgical patients.
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Affiliation(s)
- Judy Currey
- Alfred/Deakin Nursing Research Centre, Deakin University, Burwood, VIC, Australia.
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