Table 3.
Heart rate (HR) and beta blocker use. Entries represent mean values, while values in parentheses represent range for continuous variables and percentages for counts.
| Helical-only Strategy (n=138) | Sequential-if-appropriate Strategy (n=261) | P Value | Helical Protocol (n=174) | Sequential Protocol (n=225) | P Value | Helical Protocol in Sequential-if-appropriate Strategy (n=36) | Sequential Protocol in Sequential-if-appropriate Strategy (n=225) | P Value | |
|---|---|---|---|---|---|---|---|---|---|
| Initial HR (bpm) | 68.0 (40–113) | 66.7 (40–108) | 0.34 | 70.9 (40–113) | 64.5 (40–94) | <0.001 | 80.6 (58–108) | 64.5 (40–95) | <0.001 |
| HR after any metoprolol (bpm) | 63.1 (40–113) | 60.9 (40–102) | 0.045 | 65.6 (40–113) | 58.8 (40–79) | <0.001 | 74.4 (58–102) | 58.8 (40–79) | <0.001 |
| End HR ≥ 75 | 8 (6.5%) | 18 (7.0%) | 0.69 | 22 (13.8%) | 4 (1.8%) | <0.001 | 14 (38.9%) | 4 (1.8%) | <0.001 |
| Change in HR in those given beta blockers (bpm) | 11.2 | 9.2 | 0.037 | 11.1 | 8.8 | 0.026 | 10.9 | 8.8 | 0.34 |
| Beta blocker use | 70 (50.7%) | 161 (61.7%) | 0.035 | 93 (53.5%) | 138 (61.3%) | 0.11 | 23 (63.9%) | 138 (61.3%) | 0.77 |
| Beta blocker dose (mg) | 4.1 | 6.7 | 0.001 | 5.3 | 6.2 | 0.070 | 9.6 | 6.2 | 0.048 |