Calcium Channel Blockers Are Associated with Nocturia in Men Aged 40 Years or Older.

BACKGROUND

The associations of nocturia with hypertension and anti-hypertensive agents (AHTs) remain to be validated.

METHODS

This cross-sectional study examined whether blood pressure and/or frequently used classes of AHTs had consistent associations with nocturia.

METHODS

A total of 418 male patients aged ≥ 40 years were retrospectively assessed in terms of the International Prostate Symptom Score (IPSS), prescription medications, and blood pressure. Nocturia was evaluated using item 7 of the IPSS, and two or more episodes of nocturia per night was considered to indicate clinically important nocturia.

RESULTS

Patients taking calcium channel blockers (CCBs), but not other AHTs, experienced more episodes of nocturia than patients not taking AHTs (1.77 ± 1.07, 1.90 ± 1.19, and 1.48 ± 0.98 in CCBs alone, CCBs + other AHTs, and other AHTs alone, vs. 1.35 ± 1.08 in not taking AHTs; p = 0.014, p < 0.0001, and p = 0.91, respectively), whereas there was no significant difference in the number of nocturia episodes between patients with elevated and normal blood pressure. In multivariate analysis, CCB (odds ratio (OR) = 2.68, p < 0.0001) and age (OR = 1.06, p < 0.0001) were independently associated with clinically important nocturia.

CONCLUSION

CCB was associated with nocturia, while AHTs other than CCBs and elevated blood pressure were not.