NPPB and heart failure: The heart failure biomarkers including NT-ProBNP [11,693.12 ± 10,149.78 pg/mL] and cardiac troponin T [cTnT] [167.54 ± 248.47 ng/L] were also significantly higher [p < 0.05] in the mortality group compared to surviving patients, regardless of COVID-19 infection status.