https://www.selleckchem.com/pr....oducts/momordin-ic.h 
  7%) showed the expected PR interval shortening with increasing HR (negative PRHR slopes), whereas 37 patients (49.3%) showed either no change (8 with PRHR slopes= or paradoxical PR interval prolongation (29 with positive PRHR slopes) with increasing HR. Patients without PR interval shortening were more likely to die (11/37, 29.7% vs. 3/38, 7.9%, P=0.019) or require endotracheal intubation (16/37, 43.2% vs. 8/38, 21.1%, P=0.05) compared to patients with PR interval shortening. Conclusion Half of COVID-19 patients showed abnormal PR
 
					 
						 
                                     
				    				