• Priyank Shah, Rajkumar Doshi, Avantika Chenna, Robin Owens, Abigail Cobb, Holley Ivey, Sarah Newton, and Kelly Mccarley.
• Department of Cardiology, Phoebe Putney Memorial Hospital, Albany, Georgia; Department of Internal Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia. Electronic address: pshah@phoebehealth.com.
• Am. J. Cardiol. 2020 Nov 15; 135: 150-153.

AbstractThis study aimed to determine if cardiac troponin I (cTnI) is an independent predictor of clinical outcomes and whether higher values are associated with worse clinical outcomes in Covid-19 patients. This case-series study was conducted at Phoebe Putney Health System. Participants were confirmed Covid-19 patients admitted to our health system between March 2, 2020 and June 7, 2020. Data were collected from electronic medical records. Patients were divided into 2 groups: with and without elevated cTnI. The cTnI were further divided in 4 tertiles. Multivariable logistic regression analysis was performed to adjust for demographics, baseline comorbidities, and laboratory parameters including D-dimer, ferritin, lactate dehydrogenase, procalcitonin and C-reactive protein. Out of 309 patients, 116 (37.5%) had elevated cTnI. Those with elevated cTnI were older (59.9 vs. 68.2 years, p <0.001), and more likely to be males (53.5% vs. 36.3%, p = 0.003). Elevated cTnI group had higher baseline comorbidities. After multivariable adjustment, overall mortality was significantly higher in elevated cTnI group (37.9% vs. 11.4%, odds ratio:4.45; confidence interval:1.78 to 11.14, p <0.001). Need for intubation, dialysis, and intensive care unit (ICU) transfer was higher in elevated cTnI group. Among those with elevated cTnI, mortality was 23.2% for 50th percentile, 48.4% for 75th percentile, and 55.2% for 100th percentile. Similarly, further increase in cTnI was associated with a higher need for intubation, dialysis, and ICU transfer. In conclusion, myocardial injury occurs in significant proportion of hospitalized Covid-19 patients and is an independent predictor of clinical outcomes, with higher values associated with worse outcomes.Copyright © 2020 Elsevier Inc. All rights reserved.

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