| A retrospective comparative study of two groups of hypertensive patients was conducted to assess the effectiveness of a new antihypertensive medication which was administered based on the patient's circadian rhythms. A sample of 15 patients treated with verapamil HCL (Covera HS) was compared to a group of 15 patients who were treated with other forms of once-daily antihypertensive medications. Data of blood pressure readings at three different time periods were gathered by chart audit for the 30 patients who were treated in two physician offices in a midwestern city. Findings demonstrated no statistically significant differences in blood pressure readings between the group taking Covera HS and the control group taking other once-daily antihypertensives. It was recommended to replicate this study using a larger sample and a crossover design. |
