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Cardiac dysfunction and mortality in critically ill patients with COVID-19: A Swedish multicentre observational study
Jacob Holmqvist1,2, Josefine Beck-Friis3,4, Carl Jensen5
1Department of Anesthesiology and Intensive Care Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Insights
Cardiac dysfunction is common in critically ill COVID-19 patients in Sweden. Right ventricular dysfunction and elevated pulmonary artery pressure significantly increase mortality risk in these patients.
Area of Science:
- Cardiology
- Critical Care Medicine
- Infectious Diseases
Background:
- Cardiac dysfunction prevalence in critically ill COVID-19 patients in Sweden was unknown.
- COVID-19 can lead to severe systemic complications, including cardiac involvement.
Purpose of the Study:
- To determine the prevalence of cardiac dysfunction and elevated pulmonary artery pressure (PAP) in critically ill COVID-19 patients in Sweden.
- To investigate the impact of cardiac dysfunction and elevated PAP on mortality.
Main Methods:
- A multicenter observational study in five Swedish intensive care units (ICUs).
- Echocardiography was performed within 72 hours of admission and again at 4–7 days.
- Cardiac dysfunction defined by left ventricular (LV) or right ventricular (RV) dysfunction criteria.
Main Results:
- 32% of 132 patients exhibited cardiac dysfunction (LV, RV, or combined).
- Elevated PAP was present in 26% of patients, more frequent in those with RV dysfunction.
- RV dysfunction and elevated PAP were independently linked to increased mortality risk.
Conclusions:
- Cardiac dysfunction is a frequent complication in critically ill COVID-19 patients in Sweden.
- Right ventricular dysfunction and elevated pulmonary artery pressure are significant predictors of mortality.
Background:
The prevalence and importance of cardiac dysfunction in critically ill patients with COVID-19 in Sweden is not yet established. The aim of the study was to assess the prevalence of cardiac dysfunction and elevated pulmonary artery pressure (PAP), and its influence on mortality in patients with COVID-19 in intensive care in Sweden.
Methods:
This was a multicentre observational study performed in five intensive care units (ICUs) in Sweden. Patients admitted to participating ICU with COVID-19 were examined with echocardiography within 72 h from admission and again after 4 to 7 days. Cardiac dysfunction was defined as left ventricular (LV) dysfunction (ejection fraction <50% and/or regional hypokinesia) or right ventricular (RV) dysfunction (defined as TAPSE <17 mm or visually assessed moderate/severe RV dysfunction).
Results:
We included 132 patients, of whom 127 (96%) were intubated. Cardiac dysfunction was found in 42 (32%) patients. Most patients had cardiac dysfunction at the first assessment (n = 35) while a few developed cardiac dysfunction later (n = 7) and some changed type of dysfunction (n = 3). LV dysfunction was found in 21 and RV dysfunction in 19 patients, while 5 patients had combined dysfunction. Elevated PAP was found in 34 patients (26%) and was more common in patients with RV dysfunction. RV dysfunction and elevated PAP were independently associated with an increased risk of death (OR 3.98, p = .013 and OR 3.88, p = .007, respectively).
Conclusions:
Cardiac dysfunction occurs commonly in critically ill patients with COVID-19 in Sweden. RV dysfunction and elevated PAP are associated with an increased risk of death.
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