Table 3

Baseline Clinical Characteristics for Patients With RR-NSVT With Appropriate ICD Shocks Versus Those With RR-NSVT Without Appropriate ICD Shocks

Baseline CharacteristicRR-NSVT With APP (n = 86)RR-NSVT Without APP (n = 100)p Value
Age (yrs)63 (51, 69)56 (48, 65)0.018
Women15% (13)18% (18)0.60
Nonwhite race23% (20)31% (31)0.24
Weight (lb)192 (160, 221)193 (167, 227)0.55
NYHA functional class III41% (35)31% (31)0.17
Ischemic HF etiology47% (40)34% (34)0.082
Ejection fraction (%)20 (18, 25)22 (16, 30)0.41
Diabetes20% (17)25% (25)0.39
Pulmonary disease24% (21)19% (19)0.37
Hyperlipidemia43% (37)41% (41)0.78
Hypertension51% (44)60% (60)0.23
Atrial fibrillation/flutter19% (16)17% (17)0.78
NSVT (before enrollment)38% (33)29% (29)0.18
Syncope10% (9)6% (6)0.27
QRS duration ≥120 ms43% (37)40% (40)0.68
Systolic blood pressure (mm Hg)120 (108, 132)115 (106, 131)0.38
Diastolic blood pressure (mm Hg)70 (63, 80)70 (61, 79)0.46
Heart rate (beats/min)76 (68, 88)76 (68, 88)0.99
Serum sodium (mEq/l)139 (137, 141)139 (137, 141)0.91
Serum creatinine (mg/dl)1.10 (0.96, 1.30)1.10 (0.90, 1.30)0.84
ACE inhibitors or ARBs97% (83)99% (99)0.24
Beta-blocker51% (44)66% (66)0.040
Digoxin76% (65)68% (68)0.25
Aspirin53% (46)49% (49)0.54
Statins26% (22)27% (27)0.83
Aldosterone antagonist10% (9)18% (18)0.14

Values are median (25th, 75th percentile) or % (n).

APP = appropriate ICD shock for ventricular tachycardia or ventricular fibrillation; ICD = implantable cardiac defibrillator; NSVT = nonsustained ventricular tachycardia. Other abbreviations as in Table 2.

  • Likelihood ratio chi-square tests for categorical variables and Wilcoxon rank sum tests for continuous variables.