although these arrhythmias and conduction disorders were predictably observed in patients who complained of palpitations or syncope , or who had an electrocardiogram which showed first-degree heart block , ventricular bigeminy , left anterior superior hemiblock , prolonged p wave , right or left axis deviation , right or left ventricular hypertrophy , pathologic q waves or low voltage , they were often found in patients who lacked other clinical evidences of heart disease .
C0003811
arrhythmias
C0085614
first-degree heart