Table II.
Baseline Ambulatory Blood Pressure Levels and Heart Rates
| Atenolol (n=18) | Metoprolol a (n=18) | P Value | |
|---|---|---|---|
| SBP, mm Hg | |||
| 12 pm–6 pm | 147±9 | 138±13 | .03 |
| 6 pm–12 am | 146±6 | 135±16 | .01 |
| 12 am–6 am | 133±9 | 127±14 | .12 |
| 6 am–12 pm | 148±11 | 140±16 | .07 |
| 24 hours | 144±6 | 136±12 | .01 |
| DBP, mm Hg | |||
| 12 pm–6 pm | 91±9 | 85±11 | .10 |
| 6 pm–12 am | 87±11 | 81±11 | .09 |
| 12 am–6 am | 79±9 | 75±12 | .23 |
| 6 am–12 pm | 91±11 | 85±12 | .18 |
| 24 hours | 88±9 | 83±10 | .09 |
| Heart rate, bpm | |||
| 12 pm–6 pm | 79±12 | 71±9 | .02 |
| 6 pm–12 am | 77±14 | 70±10 | .08 |
| 12 am–6 am | 71±13 | 64±10 | .09 |
| 6 am–12 pm | 76±13 | 67±9 | .02 |
| 24 hours | 76±12 | 68±8 | .02 |
| aThe preparation of extended‐release metoprolol succinate was used. Values are mean ± SD. Abbreviations: DBP, diastolic blood pressure; SBP, systolic blood pressure. | |||