Risk factors of post-anaesthesia care unit delirium in patients undergoing non-cardiac surgery in Singapore

Introduction: Post-anaesthesia care unit (PACU) delirium affects 5%–45% of patients after surgery and is associated with postoperative delirium and increased mortality. Up to 40% of PACU delirium is preventable but it remains under-recognised due to a lack of awareness for its diagnosis. Nursing Delirium Screening Scale (Nu-DESC) has been validated in diagnosing PACU delirium but is not routine locally. This study aim was to use the Nu-DESC to establish the incidence and risk factors of PACU delirium in patients undergoing non-cardiac surgery in the surgical population. Methods: With IRB approval and informed consent, we conducted an audit of eligible patients undergoing major surgery in three major public hospitals in Singapore over one week. Patients were assessed for delirium 30–60 minutes following their arrival in the PACU using the Nu-DESC with a score of ≥ 2 as indicative of delirium. Results: A total of 478 patients were assessed. The overall incidence rate of PACU delirium was 18/478 (3.8%) and 9/146 (6.2%) in patients over 65 years old. PACU delirium was more common in females, patients with malignancy and those who underwent longer operations. Logistic Regression analysis showed that the use of BIS (p < 0.001) and the presence of malignancy (p<0.001) were significantly associated with a higher incidence of PACU delirium. Conclusion: In this first local study, the incidence of PACU delirium was 3.8%, with the incidence increasing to 6.2% in those older than 65 years old. Understanding these risk factors will form the basis for which protocols can be established to optimise resource management and prevent long term morbidities and mortality of PACU delirium.

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Postoperative acute kidney injury in adult non-cardiac surgery: joint consensus report of the Acute Disease Quality Initiative and PeriOperative Quality Initiative

Nature Reviews Nephrology ◽

10.1038/s41581-021-00418-2 ◽

2021 ◽

Author(s):

John R. Prowle ◽

Lui G. Forni ◽

Max Bell ◽

Michelle S. Chew ◽

Mark Edwards ◽

...

Keyword(s):

Chronic Kidney Disease ◽

Acute Kidney Injury ◽

Cardiac Surgery ◽

Kidney Disease ◽

Kidney Injury ◽

Adverse Outcomes ◽

Baseline Risk ◽

Major Surgery ◽

Increased Risk

AbstractPostoperative acute kidney injury (PO-AKI) is a common complication of major surgery that is strongly associated with short-term surgical complications and long-term adverse outcomes, including increased risk of chronic kidney disease, cardiovascular events and death. Risk factors for PO-AKI include older age and comorbid diseases such as chronic kidney disease and diabetes mellitus. PO-AKI is best defined as AKI occurring within 7 days of an operative intervention using the Kidney Disease Improving Global Outcomes (KDIGO) definition of AKI; however, additional prognostic information may be gained from detailed clinical assessment and other diagnostic investigations in the form of a focused kidney health assessment (KHA). Prevention of PO-AKI is largely based on identification of high baseline risk, monitoring and reduction of nephrotoxic insults, whereas treatment involves the application of a bundle of interventions to avoid secondary kidney injury and mitigate the severity of AKI. As PO-AKI is strongly associated with long-term adverse outcomes, some form of follow-up KHA is essential; however, the form and location of this will be dictated by the nature and severity of the AKI. In this Consensus Statement, we provide graded recommendations for AKI after non-cardiac surgery and highlight priorities for future research.

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National quality improvement indicators project: an initial descriptive study

Anaesthesia and Intensive Care ◽

10.1177/0310057x211027884 ◽

2021 ◽

pp. 0310057X2110278

Author(s):

Daniel P Ramsay ◽

Phillip Quinn ◽

Veronica Gin ◽

Timothy D Starkie ◽

Robert A Fry ◽

...

Keyword(s):

Quality Improvement ◽

New Zealand ◽

Respiratory Distress ◽

Postoperative Nausea ◽

Postoperative Nausea And Vomiting ◽

Public Hospitals ◽

Nausea And Vomiting ◽

Post Anaesthesia Care Unit ◽

National Quality ◽

Anaesthesia Care

Background Anaesthesia Quality Improvement New Zealand developed a set of five quality improvement indicators pertaining to postoperative nausea and vomiting, pain, respiratory distress, hypothermia and a prolonged post-anaesthesia care unit stay. This study sought to assess the proportion of eligible institutions that were able to measure and provide data on these indicators, produce an initial national estimate of these, and a measure of variability in the quality improvement indicators across hospitals in New Zealand. Methods All public hospitals that provide a representative to Anaesthesia Quality Improvement New Zealand were eligible for inclusion. Participating institutions were required to provide the number and proportion of patients with each of the five quality improvement indicators over a continuous 2-week period between 1 June 2019 and 25 October 2019. The overall percentage of patients and the median percentage with each outcome were calculated. Results A total of 79.2% of eligible hospitals participated. The median incidence of the indicators ranged from 1.67% for respiratory distress to 6.31% for prolonged post-anaesthesia care unit stay. The indicator with the largest interquartile range was hypothermia and the smallest was respiratory distress (13.48 and 2.29, respectively). A large variation was seen for prolonged post-anaesthesia care unit stay, hypothermia, pain and postoperative nausea and vomiting. Conclusion The majority of eligible institutions were able to measure and provide data on the quality improvement indicators. There was a low rate of respiratory distress with low variability. A large amount of variability was observed in the other indicators. Future studies are needed to explore the nature of this variability.

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Evaluation of Risk Factors for Prolonged Stay in Post Anaesthesia Care Unit (PACU) in a Tertiary Care Hospital of Saudia Arabia

Sri Lankan Journal of Anaesthesiology ◽

10.4038/slja.v29i1.8631 ◽

2021 ◽

Vol 29 (1) ◽

pp. 29

Author(s):

Anwar Ul Huda ◽

Nasrullah Sheikh

Keyword(s):

Risk Factors ◽

Tertiary Care Hospital ◽

Tertiary Care ◽

Care Hospital ◽

Prolonged Stay ◽

Post Anaesthesia Care Unit ◽

Anaesthesia Care

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Incidence of hypoxemia in a post-anaesthesia care unit and relevant risk factors: a retrospective study of 14604 patients with general anaesthesia

10.21203/rs.2.12878/v1 ◽

2019 ◽

Author(s):

Shuai Tang ◽

Liangyan Zhang ◽

Wei Han ◽

Yang Xue ◽

Yi Tian ◽

...

Keyword(s):

Risk Factors ◽

Body Mass Index ◽

Regression Analysis ◽

Retrospective Study ◽

Retrospective Cohort ◽

Post Anaesthesia Care Unit ◽

Postoperative Hypoxemia ◽

Total Incidence ◽

American Society ◽

Anaesthesia Care

Abstract Background This article is aim to investigate the incidence and risk factors for postoperative hypoxemia in a post-anaesthesia care unit (PACU). Methods The retrospective cohort assessed 14604 postoperative patients who were admitted to PACU between January 2015 and December 2015. A pulse oximeter was used to monitor and record pulse oxygen saturation (SpO2) every 5 minutes. Clinical data were collected for all these patients, and the incidence of and risk factors for postoperative hypoxemia were analysed. Results The total incidence of hypoxemia was 21.83% (SpO2 ≤ 95%) and 2.79% (SpO2 ≤ 90%). Multiple regression analysis indicated that the risk factors were age ≥50-year old, body mass index (BMI) ≥25kg/m2, American Society of Anaesthesiologists (ASA) II and III, limb surgery, and thoracic surgery. Conclusions Therefore, hypoxemia was common in postoperative patients in the PACU. Age, BMI, ASA classification, and surgical site are associated with postoperative hypoxemia. More attention should be paid to these patients to prevent hypoxemia in the PACU.

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