Influence of modifiable cardiovascular risk factors on antihypertensive therapy efficiency escape

Abstract

Aim. To evaluate the influence of cardiovascular risk factors on antihypertensive therapy (AHT) efficiency escape (EE). Subjects and methods. Data on 59 patients with grades 1—3 hypertension (Stages I—II) were analyzed. During chosen AHT, 24-hour blood pressure monitoring was done at baseline, 1 and 3 months after beginning the observation to identify/rule out the AHT EE phenomenon. Results. The AHT EE group (Group 1) as compared with the group that needed no therapy correction within 3 months (Group 2) was observed to have the following: elevated fasting blood glucose levels (FBGL) (5.8±0.8 vs 5.3±0.7 mmol/l; p=0.008) and higher impaired glucose tolerance (IGT) rates (8 (27.6%) vs 4 (13.3%) cases (p=0.03)); a more number of smoking patients (8 (27.6%) vs 3 (10%) cases; p=0.02); a larger number of patients with a compromised family history of cardiovascular diseases (17 (58.6%) vs 11 (36%); p=0.02). Furthermore, in Group 1 baseline average systolic blood pressure during 24 hours (SBP-24) proved to be higher than that in Group 2 (127.4±4.2 vs 122.4±6.8 mm Hg; p=0.002). Odds ratio (OR) for developing the EE phenomenon increased by 60% with a rise of 0.5 mmol in FBGL (OR, 1.60; 95% confidence interval (CI), 1.06 to 2.4; p=0.02) and by 18% with an increase of 1 mm Hg in baseline SBP-24 (OR, 1.18; 95% CI, 1.05 to 1.33; p=0.004). Multivariate analysis indicated that the independent predictors of AHT EE were a compromised family history (OR, 3.7; 95% CI, 1.1 to 12.1; p=0.03) and IGT (OR, 4.1; 95% CI, 1.02 to 16.4; p=0.04). Conclusion. AHT EE was influenced by FBGL, IGT, smoking, a compromised family history, and baseline SBP-24 level.

Keywords

• hypertension
• antihypertensive therapy
• therapy efficiency escape
• cardiovascular risk factors