From the images of cloudy chest scans and gasping patients hooked up to ventilators, we’ve been conditioned to think of Covid-19 as a respiratory disease. But it’s not just about the lungs. Even from the early days of the pandemic, doctors were finding that a novel coronavirus infection could ravage other parts of the body, including the brain, blood vessels, and heart. Data from initial outbreaks in China, New York City, and Washington state suggested that 20 to 30 percent of patients hospitalized with Covid-19 showed signs of cardiac injury.
That these patients tended to get sicker and died more often than patients without cardiac complications didn’t set off immediate alarm bells. These were, after all,