Variable | Group 1 | Group 2 | p Value |
n | 37 | 42 | |
Age (years) | 65.5 (11.4) | 62.8 (11.5) | 0.289 |
Sex (male/female) | 30/7 | 34/8 | 0.988 |
Ischaemic heart disease | 20 (54.1%) | 25 (59.5%) | 0.624 |
NYHA classification | 1.8 (0.6) | 1.9 (0.5) | 0.893 |
Echocardiography | |||
LVDd (mm) | 63.9 (7.6) | 60.0 (6.3) | 0.016 |
LAD (mm) | 44.0 (8.8) | 40.3 (6.3) | 0.034 |
Radionuclide angiography | |||
EF (%) | 28.9 (8.4) | 29.7 (7.5) | 0.630 |
Plasma noradrenaline (pg/ml) | 499 (252) | 344 (145) | 0.001 |
123I MIBG imaging | |||
H:M ratio on delayed image | 1.5 (0.2) | 1.9 (0.2) | < 0.001 |
Washout rate (%) | 42.4 (10.0) | 16.4 (6.9) | < 0.001 |
Drug treatment | |||
ACE inhibitor | 28 (75.7%) | 32 (76.2%) | 0.957 |
β Blocker | 8 (21.6%) | 12 (28.6%) | 0.478 |
Data are n, n (%), or mean (SD).
ACE, angiotensin converting enzyme; EF, ejection fraction; H:M, heart to mediastinum; LAD, left atrial dimension; LVDd, left ventricular end diastolic dimension; MIBG, metaiodobenzylguanidine; NYHA, New York Heart Association.