Short and long-term survival following an in-hospital cardiac arrest in a regional hospital cohort

Quality of life and performance status after cardiopulmonary resuscitation: A study in Cova da Beira University Hospital Center's intensive care unit

INTRODUCTION AND OBJECTIVES

Cardiac arrest (CA) is associated with high morbidity and mortality. Many studies focus on survival, but few explore the outcomes. The aim of this study is to analyze the survival curve, independence, quality of life, and performance status after CA.

METHODS

This retrospective study included adults admitted to the intensive care unit of Cova da Beira University Hospital Center after CA between 2015 and 2019. We analyzed patient records and applied a questionnaire including EuroQoL's EQ-5D-3L and ECOG performance status.

RESULTS

Ninety-seven patients were included (mean age 75.74 years). Thirty-one patients (32.0%) survived to hospital discharge. There was a significant loss of independence for activities of daily living, with 50.0% of those previously independent becoming dependent and 47.5% of those previously at home being institutionalized. Diabetes, female gender, and length of hospital stay were especially impactful on these findings. One year after CA, only 20.6% were alive and only 13.4% (65% of the one-year survivors) were independent. Nine patients answered our questionnaire. Mean EQ-5D quality of life index (0.528±0.297) and the most affected domains ('Pain/discomfort' and 'Anxiety/depression') were similar to the Portuguese population aged >30 years. However, 66.6% reported a decline in their quality of life. Lastly, seven respondents had a good performance status (ECOG 0-1).

CONCLUSIONS

There was a significant loss of independence after CA. Moreover, despite the acceptable performance status and the quality of life results being similar to the general population, there was a perceived deterioration post-CA. Ultimately, we emphasize the need to improve care for these patients.

Long term survival following a medical emergency team call at an Australian regional hospital

Objective: To investigate the long term survival of medical emergency team (MET) patients at an Australian regional hospital and describe associated patient and MET call characteristics. Design: Retrospective cohort study. Data linkage to the statewide death registry was performed to allow for long term survival analysis, including multivariable Cox proportional hazards regression and production of Kaplan-Meier survival curves. Setting: A large Australian regional hospital. Participants: Adult patients who received a MET call from 1 July 2012 to 3 March 2020. Main outcome measures: Survival to 30, 90 and 180 days; one year; and 5-years after index MET call. Results: The study included 6499 eligible patients. The cohort median age was 71 years, and 52.4% of the patients were female. Surgical (39.6%) and medical (36.9%) patients comprised most of the cohort. Thirty-day survival was 86.5% one-year survival was 66.1%. Among patients aged < 75 years, factors independently associated with significantly higher long term mortality included age (hazard ratio [HR], 3.26 [95% CI, 2.63-4.06]; for patients aged 65-74 v 18-54 years), male sex (HR, 0.71 [95% CI, 0.61-0.83]; for females) and pre-existing limitation of medical therapy (HR, 2.76; 95% CI, 2.28-3.35). Among patients aged ≥ 75 years, factors independently associated with significantly higher long term mortality included age (HR, 1.46 [95% CI, 1.29-1.65]; for patients aged ≥ 85 years), male sex (HR, 0.74 [95% CI, 0.66-0.83]; for females), and altered MET criteria (HR, 1.33; 95% CI, 1.03-1.71). Conclusions: Long term survival probabilities of MET call patients are affected by factors including age, sex, and limitation of medical therapy status. These data may be useful for clinicians conducting end-of-life discussions with patients.

CoBRA: COde Blue Retrospective Audit in a Metropolitan Hospital

BACKGROUND

In-hospital cardiac arrest (IHCA) is an uncommon but challenging problem. This study aims to investigate the management and outcomes of IHCA, and investigate the effect of introducing a Medical Emergency Team (MET) on IHCA prevalence.

METHODS

Retrospective medical record review of 176 adult IHCA episodes at Box Hill Hospital, a university-affiliated public hospital in metropolitan Melbourne, from July 2012 to June 2017. Inpatients receiving cardiopulmonary resuscitation for IHCA, in inpatient wards, intensive care unit, cardiac catheterisation laboratory, and operating theatres, were included. Data collected included demographics, resuscitation management, and outcomes. Average treatment effect (ATE) was derived from margins estimates and linear regression fitted to hospital outcome, adjusted for IHCA factors. An exponentially-weighed moving average control chart was used to explore IHCA prevalence over time.

RESULTS

65.3% of IHCA patients died in hospital. IHCA prevalence was unchanged after the introduction of a dedicated MET service. Factors associated with higher likelihood of survival to discharge were initial cardiac of rhythm ventricular tachycardia (VT) (ATE 0.10 (95%CI = -0.03-0.25)) or ventricular fibrillation (VF) (ATE 0.28 (95% CI=0.11-0.46)), cardiac monitoring at time of arrest (ATE 0.06 (95%CI = -0.04-0.16)), and time to return of spontaneous circulation (ATE 0.023 (95%CI=0.015-0.031)).

CONCLUSION

IHCA is uncommon and is associated with high mortality. IHCA prevalence was unchanged after the introduction of a dedicated MET service. Factors associated with improved survival to hospital discharge were initial rhythm VT or VF, cardiac monitoring, and shorter resuscitation times. This article is protected by copyright. All rights reserved.

Non-beneficial resuscitation during in-hospital cardiac arrests in a metropolitan teaching hospital

PURPOSE

To describe the prevalence of non-beneficial resuscitation attempts in hospitalised patients and identify interventions that could be used to reduce these events.

METHODS

A retrospective analysis was conducted of all adult IHCAs receiving cardiopulmonary resuscitation (CPR) in a teaching hospital over nine years. Demographics and arrest characteristics were obtained from a prospectively collected database. Non-beneficial CPR was defined as CPR being administered to patients who had a current not for resuscitation (NFR) order in place or who had an NFR order enacted on a previous hospital admission. Further antecedent factors and resuscitation characteristics were collected for these patients.

RESULTS

There were 257 IHCAs, of which 115 (44.7%) occurred on general wards, with 19.8% of all patients surviving to discharge home. There were 39 (15.2%) instances of non-beneficial CPR of which 28/39 (72%) occurred in unmonitored patients on the ward comprising nearly a quarter (28/115) of all arrests in this patient group. A specialist had reviewed 30/39 (76.9%) of these patients, and 33.3% (13/39) had a medical emergency team (MET) review prior to their arrest.

CONCLUSIONS

Over one in seven resuscitation attempts were non-beneficial. MET reviews and specialist ward rounds provide opportunities to improve the documentation and visibility of NFR status. This article is protected by copyright. All rights reserved.

EEG patterns and their correlations with short- and long-term mortality in patients with hypoxic encephalopathy

OBJECTIVE

To analyze the association between electroencephalographic (EEG) patterns and overall, short- and long-term mortality in patients with hypoxic encephalopathy (HE).

METHODS

Retrospective, mono-center analysis of 199 patients using univariate log-rank tests (LR) and multivariate cox regression (MCR).

RESULTS

Short-term mortality, defined as death within 30-days post-discharge was 54.8%. Long-term mortality rates were 69.8%, 71.9%, and 72.9%, at 12-, 24-, and 36-months post-HE, respectively. LR revealed a significant association between EEG suppression (SUP) and short-term mortality, and identified low voltage EEG (LV), burst suppression (BSP), periodic discharges (PD) and post-hypoxic status epilepticus (PSE) as well as missing (aBA) or non-reactive background activity (nrBA) as predictors for overall, short- and long-term mortality. MCR indicated SUP, LV, BSP, PD, aBA and nrBA as significantly associated with overall and short-term mortality to varying extents. LV and BSP were significant predictors for long-term mortality in short-term survivors. Rhythmic delta activity, stimulus induced rhythmic, periodic or ictal discharges and sharp waves were not significantly associated with a higher mortality.

CONCLUSION

The presence of several specific EEG patterns can help to predict overall, short- and long-term mortality in HE patients.

SIGNIFICANCE

The present findings may help to improve the challenging prognosis estimation in HE patients.

Functional outcomes following an in-hospital cardiac arrest: A retrospective cohort study

BACKGROUND/PURPOSE

Whilst much is known about the survival outcomes of patients that suffer an in-hospital cardiac arrest (IHCA) in Australia very little is known about the functional outcomes of survivors. This study aimed to describe the functional outcomes of a cohort of patients that suffered an in-hospital cardiac arrest (IHCA) and survived to hospital discharge in a regional Australian hospital.

METHODS

This is a single-centre retrospective observational cohort study conducted in a regional Australian hospital. All adult patients that had an IHCA in the study hospital between 1 Jan 2017 and 31 Dec 2019 and survived to hospital discharge were included in the study. Functional outcomes were reported using the Modified Rankin Scale (mRS), a six-point scale for which increasing scores represent increasing disability. Scores were assigned through a retrospective review of medical notes.

RESULTS

Overall, 102 adult patients had an IHCA during the study period, of whom 50 survived to hospital discharge. The median age of survivors was 68 years, and a third had a shockable initial arrest rhythm. Of survivors, 47 were able to be assigned both mRS scores. At discharge, 81% of patients achieved a favourable functional outcome (mRS 0-3 or equivalent function at discharge equal to admission).

CONCLUSIONS

Most survivors to hospital discharge following an IHCA have a favourable functional outcome and are discharged home. Although these results are promising, larger studies across multiple hospitals are required to further inform what is known about functional outcomes in Australian IHCA survivors.

Long-Term Functional Outcome and Quality of Life Following In-Hospital Cardiac Arrest-A Longitudinal Cohort Study

OBJECTIVES

To evaluate the functional outcome and health-related quality of life of in-hospital cardiac arrest survivors at 6 and 12 months.

DESIGN

A longitudinal cohort study.

SETTING

Seven metropolitan hospitals in Australia.

PATIENTS

Data were collected for hospitalized adults (≥ 18 yr) who experienced in-hospital cardiac arrest, defined as "a period of unresponsiveness, with no observed respiratory effort and the commencement of external cardiac compressions."

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Prior to hospital discharge, patients were approached for consent to participate in 6-month and 12-month telephone interviews. Outcomes included the modified Rankin Scale, Barthel Index, Euro-Quality of Life 5 Dimension 5 Level, return to work and hospital readmissions. Forty-eight patients (80%) consented to follow-up interviews. The mean age of participants was 67.2 (± 15.3) years, and 33 of 48 (68.8%) were male. Good functional outcome (modified Rankin Scale score ≤ 3) was reported by 31 of 37 participants (83.8%) at 6 months and 30 of 33 (90.9%) at 12 months. The median Euro-Quality of Life-5D index value was 0.73 (0.33-0.84) at 6 months and 0.76 (0.47-0.88) at 12 months. The median Euro-Quality of Life-Visual Analogue Scale score at 6 months was 70 (55-80) and 75 (50-87.5) at 12 months. Problems in all Euro-Quality of Life-5D-5 L dimension were reported frequently at both time points. Hospital readmission was reported by 23 of 37 patients (62.2%) at 6 months and 16 of 33 (48.5%) at 12 months. Less than half of previously working participants had returned to work by 12 months.

CONCLUSIONS

The majority of in-hospital cardiac arrest survivors had a good functional outcome and health-related quality of life at 6 months, and this was largely unchanged at 12 months. Despite this, many reported problems with mobility, self-care, usual activities, pain, and anxiety/depression. Return to work rates was low, and hospital readmissions were common.

In-hospital cardiac arrest in hospitals with mature rapid response systems - a multicentre, retrospective cohort study

AIM

To investigate in-hospital cardiac arrests (IHCAs) according to the Ustein template in hospitals with mature systems utilizing rapid response teams (RRTs), with a special reference to preceding RRT factors and factors associated with a favourable neurological outcome (cerebral performance category (CPC) 1-2) at hospital discharge.

METHODS

Multicentre, retrospective cohort study between 2017-2018 including two Finnish and one Australian university affiliated tertiary hospitals.

RESULTS

A total 309 IHCAs occurred with an incidence of 0.78 arrests per 1000 hospital admissions. The median age of the patients was 72 years, 63% were male and 73% had previously lived a fully independent life with a median Charlson comorbidity index of two. Before the IHCA, 16% of the patients had been reviewed by RRTs and 26% of the patients fulfilled RRT activation criteria in the preceding 8 h of the IHCA. Return of spontaneous circulation was achieved in 53% of the patients and 28% were discharged from hospital with CPC 1-2. In a multivariable model, younger age, no pre-arrest RRT criteria, arrest in normal work hours, witnessed arrest and shockable initial rhythm were independently associated with CPC 1-2 at hospital discharge.

CONCLUSIONS

In hospitals with mature rapid response systems most IHCA patients live a fully independent life with low burden of comorbid diseases before their hospital admission, the IHCA incidence is low and outcome better than traditionally believed. Deterioration before IHCA is present in a significant number of patients and improved monitoring and earlier interventions may further improve outcomes.