Table 1

Patient Characteristics

All Patients (n = 33)DCM (n = 21)ICM (n = 12)p Value DCM vs. ICM
Age (yrs)63.6 ± 12.162.3 ± 12.765.9 ± 10.9NS
Male/female29/418/311/1NS
NYHA functional class III302010NS
QOL score pre-CRT52 ± 2250 ± 2353 ± 21NS
QRS duration (ms)160 ± 23162 ± 28156 ± 13NS
Rhythm27 SR16 SR11 SRNS
6 AF5 AF1 AF
Ejection fraction (%)25 ± 824.4 ± 9.425.6 ± 4.9NS
End-diastolic volume (ml)239 ± 69250 ± 83229 ± 56NS
ESV (ml)185 ± 67193 ± 77170 ± 43NS
Beta-blockers (%)868875
ACE/ARB (%)100100100
Diuretics (%)647845
Aldosterone antagonists (%)394136

ACE = angiotensin-converting enzyme; AF = atrial fibrillation; ARB = angiotensin receptor blocker; CRT = cardiac resynchronization therapy; DCM = dilated cardiomyopathy; ESV = end-systolic volume; ICM = ischemic cardiomyopathy; NYHA = New York Heart Association; QOL = quality of life questionnaire; SR = sinus rhythm.