the electrocardiographic alterations were found as follows : flat or inverted t in 19 cases , prolonged qtc in 33 cases , manifest u in 14 cases , st elevation or depression in 10 cases , ta ( atrial t ) in 10 cases , left ventricular hypertrophy in 8 cases , sinus tachycardia in 7 cases , sinus bradycardia in 12 cases , and arrhythmias with svpc or vpc ( supraventricular or ventricular premature contraction ) , or sinus arrhythmia in 12 cases .
C0003811
arrhythmias
C0003813
sinus