Ultrasounds Show Impact of COVID-19 on the Heart

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Newswise — (New York, NY - October 22, 2020) - Cardiac ultrasounds (also known as echocardiograms) are providing a view of the heart and the impact of the COVID-19 virus on patients. A new study by researchers at Icahn School of Medicine at Mount Sinai identifies different types of cardiac structural damage experienced by COVID-19 patients after cardiac injury that can be associated with deadly conditions including heart attack, pulmonary embolism, heart failure, and myocarditis. These abnormalities are associated with higher risk of death among hospitalized patients.  The findings, published the October 26 issue of the Journal of the American College of Cardiology, offer new insights that may help doctors better understand the mechanism of cardiac injury, leading to quicker identification of patients at risk and guidance on future therapies.  

“Early detection of structural abnormalities may dictate more appropriate treatments, including anticoagulation and other approaches for hospitalized and post-hospitalized patients,” says author Valentin Fuster, MD, PhD, Director of Mount Sinai Heart and Physician-in-Chief of The Mount Sinai Hospital.

The international, retrospective study expands on Mount Sinai’s previous research showing that myocardial injury (heart damage) is prevalent among patients hospitalized with COVID-19 and is associated with higher risk of mortality. That study focused on the patients’ levels of troponin—proteins that are released when the heart muscle becomes damaged—and their outcomes (higher troponin levels mean greater heart damage).

This new work looked at the presence of cardiac troponin elevations in combination with the presence of echocardiographic abnormalities, and found that the combination was associated with worse prognosis and mortality than troponin elevations alone.

"This is one of the first studies to provide detailed echocardiographic and electrocardiographic data in hospitalized patients with COVID-19 and laboratory evidence of myocardial injury,” explains first and corresponding author Gennaro Giustino, MD, Cardiology Fellow at The Mount Sinai Hospital. “We found that among COVID-19 patients who underwent transthoracic echocardiography, these cardiac structural abnormalities were diverse and present in nearly two-thirds of patients.”  

Researchers looked at transthoracic echocardiographic (TTE) and electrocardiographic (ECG) scans of 305 adult patients with confirmed positive COVID-19 admitted to four New York City hospitals within the Mount Sinai Health System (The Mount Sinai Hospital, Mount Sinai West, Mount Sinai Queens, and Mount Sinai Beth Israel), Elmhurst Hospital in Queens, and two hospitals in Milan, Italy, between March and May 2020. Median age was 63 years and 67.2 percent were men. 190 patients (62.6 percent) had evidence of myocardial injury; 118 of them had heart damage at the time of hospitalization admission and 72 developed myocardial injury during hospitalization. Researchers found that patients with myocardial injury had more electrocardiographic abnormalities, higher inflammatory biomarkers, and an increased prevalence of TTE abnormalities when compared to patients without heart injury.

Abnormalities were diverse, with some patients exhibiting multiple abnormalities.  26.3 percent had right ventricular dysfunction (which can be associated with pulmonary embolism and severe respiratory failure), 23.7 percent had regional left ventricular wall motion abnormalities (which can be associated with heart attacks), 18.4 percent had diffuse left ventricular dysfunction (which can be associated with heart failure/myocarditis), 13.2 percent had grade II or III diastolic dysfunction (a condition leading to stiffer cardiac chambers), and 7.2 percent had pericardial effusions (extra fluid around the heart that causes abnormal pumping of the heart).

The study went on to look at in-hospital mortality and troponin elevation. It shows that troponin elevation was 5.2 percent among patients who did not have heart injury, compared to 18.6 percent for patients with myocardial injury but without echocardiographic abnormalities, and 31.7 percent for patients with myocardial injury who also had echocardiographic abnormalities. Researchers adjusted for other major complications from COVID-19 including shock, acute respiratory distress syndrome, and renal failure.

“Our study shows that an echocardiogram performed with appropriate personal protection considerations is a useful and important tool in early identification of patients at greater risk for COVID-19-related cardiac injury, who may benefit from a more aggressive therapeutic approach earlier in their hospitalization,” says corresponding author Martin Goldman, MD, Arthur M. and Hilda A. Master Professor of Medicine (Cardiology) at the Icahn School of Medicine at Mount Sinai. “Additionally, because this is a new disease with lingering symptoms, we plan on following these patients closely using imaging to evaluate the evolution and hopefully resolution of these cardiac issues.”

“Echocardiograms have shown to be invaluable in providing critical information on patients who present with multiple cardiac complaints. Echocardiography is the only imaging modality that can be taken to the bedside and safely used for patients including those on ventilators,” says Lori Croft, MD, Associate Professor of Medicine (Cardiology) at the Icahn School of Medicine at Mount Sinai and Director of the Echocardiography Laboratory at The Mount Sinai Hospital.  “Our findings will help guide care of Covid-19 patients during a critical time.”

About the Mount Sinai Health System

The Mount Sinai Health System is New York City's largest academic medical system, encompassing eight hospitals, a leading medical school, and a vast network of ambulatory practices throughout the greater New York region. Mount Sinai is a national and international source of unrivaled education, translational research and discovery, and collaborative clinical leadership ensuring that we deliver the highest quality care—from prevention to treatment of the most serious and complex human diseases. The Health System includes more than 7,200 physicians and features a robust and continually expanding network of multispecialty services, including more than 400 ambulatory practice locations throughout the five boroughs of New York City, Westchester, and Long Island. Mount Sinai Heart at The Mount Sinai Hospital is the nation’s No. 6-ranked heart center, and The Mount Sinai Hospital is ranked No. 14 on U.S. News & World Report's "Honor Roll" of the Top 20 Best Hospitals in the country and the Icahn School of Medicine as one of the Top 20 Best Medical Schools in country. Mount Sinai Health System hospitals are consistently ranked regionally by specialty and our physicians in the top 1% of all physicians nationally by U.S. News & World Report.

For more information, visit https://www.mountsinai.org or find Mount Sinai on Facebook, Twitter and YouTube.

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