Table 1.

Characteristics of Patients Receiving Replacement ICDs.

Characteristic	Total n = 111,826
Demographics
Age (years)	70.7 ± 12.4
Male	84439 (75.5%)
Caucasian	97842 (87.5%)
Hispanic	4112 (3.7%)
Clinical History
Any Ischemic Heart Disease	75609 (67.6%)
Prior myocardial infarction	62015 (55.5%)
Previous CABG	44439 (39.8%)
Prior percutaneous coronary intervention	35006 (31.3%)
Congestive Heart Failure	82474 (73.8%)
Non-Ischemic Dilated Cardiomyopathy
No	81066 (72.5%)
Yes Within the past 3 months	1025 (0.9%)
Yes 3 to 9 months	717 (0.6%)
Yes Greater than 9 months	28954 (25.9%)
NYHA Class
Class I	22743 (20.4%)
Class II	46237 (41.4%)
Class III	40158 (36.0%)
Class IV	2481 (2.2%)
Atrial Fibrillation	47162 (42.2%)
Ventricular Tachycardia
None	47052 (42.1%)
Yes VT, Non Sustained	32600 (29.2%)
Yes Monomorphic Sustained VT	26895 (24.1%)
Yes Polymorphic Sustained VT	5175 (4.6%)
Abnormal Sinus Node Function	35845 (32.1%)
Cerebrovascular Disease	17849 (16.0%)
Chronic Lung Disease	24089 (21.5%)
Diabetes	38430 (34.4%)
Hypertension	81953 (73.3%)
Renal Failure-Dialysis	3101 (2.8%)
Left ventricular ejection fraction %	32.4 ± 13.7
QRS Duration (ms)	138.3 ± 37.3
Atrioventricular Conduction
Normal	32924 (29.4%)
LBBB	16149 (14.4%)
RBBB	6307 (5.6%)
PACED	47620 (42.6%)
OTHER	8826 (7.9%)
Serum creatinine (mg/dL)	1.365 ± 0.906
Glomerular filtration rate (ml/min)	63.7 ± 30.3
ICD Procedure
Reason for Admission
Admitted for this Procedure	103494 (92.6%)
Cardiac CHF	2442 (2.2%)
Cardiac Other	4570 (4.1%)
Noncardiac	1212 (1.1%)
ICD Indication
Primary Prevention	73394 (65.6%)
Secondary Prevention	38432 (34.4%)
ICD Type
Single Chamber	18423 (16.5%)
Dual Chamber	43547 (39.0%)
Biventricular	49694 (44.5%)
Discharge Medications
ACE-Inhibitor	58949 (53.9%)
Amiodarone	20227 (18.5%)
ARB	20065 (18.3%)
Aspirin	67293 (61.5%)
Beta Blocker	92381 (84.4%)
Coumadin	39498 (36.1%)
Digoxin	36410 (33.3%)
Diuretic	70653 (64.6%)