Variables
Young (<85) N=152 Elderly (≥85) N=37
P value
Age, yrs 77 [68, 81] 87 [86, 89] <0.0001
Gender (male), n (%) 86 (56.6) 18 (48.6) 0.38
BMI, kg/m2 24.0±3.9 23.8±3.3 0.76
IVS thickness, mm 10 [10, 11] 10 [10, 11] 0.34
LVEF, % 60 [55, 62] 59 [52, 60] 0.20
NT-proBNP, pg/ml 461.0 [178.8, 1203.5] 1617.0 [619.0, 2941.0] <0.0001
eGFR, ml/min/1.73m2* 87.1±31.8 54.8±24.3 <0.0001
NYHA, n (%) 0.006
IV 10 (6.6) 8 (21.6)
III 25 (19.0) 7 (18.9)
II 40 (26.3) 10 (27.0)
I 77 (50.7) 12 (32.4)
Indications, n (%) 0.52
SSS 45 (29.8) 13 (35.1)
AF with long R-R interval
36 (23.8)
6 (16.2)
AVB + 61 (40.4) 16 (43.2)
Battery depletion 5 (3.3) 2 (5.4)
Lead failure 4 (2.6) 0
Medical history, n (%)
Renal insufficiency 10 (6.6) 13 (35.1) <0.0001
AF 52 (34.2) 11 (29.7) 0.60
Previous stroke 23 (15.3) 7 (18.9) 0.50
DCM 2 (1.3) 1 (2.7) 1.00
HCM 5 (3.3) 2 (5.4) 0.90
Coronary heart disease 49 (32.2) 17 (46.0) 0.12
myocardial infarction 17 (11.2) 7 (18.9) 0.32
Hypertension 108 (71.1) 25 (67.6) 0.68
Diabetes mellitus 37 (24.3) 8 (21.6) 0.73
Medications, n (%)
Antiplatelet agents 42 (27.6) 11 (29.7) 0.70
Oral anticoagulants 19 (12.5) 4 (10.8) 1.00
Statins 48 (31.6) 16 (43.2) 0.18