PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2439251-1 1987 We attempted to correlate clinical response with the effects of N-acetylprocainamide (NAPA) on the QT interval in five patients with stable chronic ventricular arrhythmias. Acecainide 64-84 NSF attachment protein alpha Homo sapiens 86-90