From the Journals

Acute cardiac events common during COVID hospitalization


 

FROM THE JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY

Among adults hospitalized for COVID-19, acute cardiac events are common, particularly among those with underlying heart disease, and are associated with more severe disease outcomes, a new study suggests.

“We expected to see acute cardiac events occurring among adults hospitalized with COVID-19 but were surprised by how frequently they occurred,” Rebecca C. Woodruff, PhD, MPH, of the U.S. Centers for Disease Control and Prevention, Atlanta, told this news organization.

Overall, she said, “about 1 in 10 adults experienced an acute cardiac event – including heart attacks and acute heart failure – while hospitalized with COVID-19, and this included people with no preexisting heart disease.”

However, she added, “about a quarter of those with underlying heart disease had an acute cardiac event. These patients tended to experience more severe disease outcomes relative to patients hospitalized with COVID-19 who did not experience an acute cardiac event.”

The findings might be relevant to hospitalizations for other viral diseases, “though we can’t say for sure,” she noted. “This study was modeled off a previous study conducted before the COVID-19 pandemic among adults hospitalized with influenza. About 11.7% of [those] adults experienced an acute cardiac event, which was a similar percentage as what we found among patients hospitalized with COVID-19.”

The study was published online in the Journal of the American College of Cardiology.

Underlying cardiac disease key

Dr. Woodruff and colleagues analyzed medical records on a probability sample of 8,460 adults hospitalized with SARS-CoV-2 infection identified from 99 U.S. counties in 14 U.S. states (about 10% of the United States population) from January to November 2021.

Among participants, 11.4% had an acute cardiac event during their hospitalization. The median age was 69 years; 56.5% were men; 48.7%, non-Hispanic White; 33.6%, non-Hispanic Black; 7.4%, Hispanic; and 7.1%, non-Hispanic Asian or Pacific Islander.

As indicated, the prevalence was higher among those with underlying cardiac disease (23.4%), compared with those without (6.2%).

Acute ischemic heart disease (5.5%) and acute heart failure (5.4%) were the most prevalent events; 0.3% of participants had acute myocarditis or pericarditis.

Risk factors varied, depending on underlying cardiac disease status. Those who experienced one or more acute cardiac events had a greater risk for intensive care unit admission (adjusted risk ratio,1.9) and in-hospital death (aRR, 1.7) versus those who did not.

In multivariable analyses, the risk of experiencing acute heart failure was significantly greater among men (aRR, 1.5) and among those with a history of congestive heart failure (aRR, 13.5), atrial fibrillation (aRR, 1.6) or hypertension (aRR,1.3).

Among patients who experienced one or more acute cardiac events, 39.2% required an intensive care unit stay for a median of 5 days. Approximately 22.4% required invasive mechanical ventilation or extracorporeal membrane oxygenation, and 21.1% died while hospitalized.

“Persons at greater risk for experiencing acute cardiac events during COVID-19–associated hospitalizations might benefit from more intensive clinical evaluation and monitoring during hospitalization,” the authors conclude.

The team currently is taking a closer look at acute myocarditis among patients hospitalized with COVID-19, Dr. Woodruff said. Preliminary results were presented at the 2022 annual scientific sessions of the American Heart Association and a paper is forthcoming.

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