| Prior to CRT (%) | Following CRT (%) | p Value | |
| Diuretics | 37 (71) | 34 (65) | 0.53 |
| ACE inhibitors/Angiotensin receptor blockers | 36 (69) | 31 (60) | 0.31 |
| β-blockers | 35 (67) | 38 (73) | 0.52 |
| Digoxin | 33 (63) | 36 (69) | 0.53 |
| Long-acting Nitrates | 15 (29) | 14 (27) | 0.83 |
| Calcium channel blockers | 2 (4) | 1 (2) | 0.56 |
| Amiodarone | 20 (38) | 24 (46) | 0.42 |
| Mexilitene | 5 (10) | 5 (10) | 1.00 |
| Sotalol | 1 (2) | 0 (0) | 0.31 |
CRT, cardiac resynchronisation therapy.