Effect of Intensive vs Standard Blood Pressure Treatment Upon Erectile Function in Hypertensive Men: Findings From the Systolic Blood Pressure Intervention Trial
Authors: Foy Capri G. , Newman Jill C. , Russell Greg B. , Berlowitz Dan R. , Bates Jeffrey T. , Burgner Anna M. , Carson Thaddeus Y. , Chertow Glenn M. , Doumas Michael N. , Hughes Robin Y. , Kostis John B. , Buren Peter van , Wadley Virginia G. 
Published: December 2019

Introduction

The effect of intensive blood pressure control upon erectile function in men with hypertension, but without diabetes, is largely unknown.

Aim

To examine the effects of intensive systolic blood pressure (SBP) lowering on erectile function in a multiethnic clinical trial of men with hypertension.

Methods

We performed subgroup analyses from the Systolic Blood Pressure Intervention Trial ([SPRINT]; ClinicalTrials.gov: NCT120602, in a sample of 1255 men aged 50 years or older with hypertension and increased cardiovascular disease risk. Participants were randomly assigned to an intensive treatment group (SBP goal of &lt;120 mmHg) or a standard treatment group (SBP goal of &lt;140 mmHg).

Main Outcome Measure

The main outcome measure was change in erectile function from baseline, using the 5-item International Index of Erectile Function (IIEF-5) total score, and erectile dysfunction ([ED]; defined as IIEF-5 score ≤21) after a median follow-up of 3 years.

Results

At baseline, roughly two-thirds (66.1%) of the sample had self-reported ED. At 48 months after randomization, we determined that the effects of more intensive blood pressure lowering were significantly moderated by race-ethnicity (p for interaction = 0.0016), prompting separate analyses stratified by race-ethnicity. In non-Hispanic whites, participants in the intensive treatment group reported slightly, but significantly better change in the IIEF-5 score than those in the standard treatment group (mean difference = 0.67; 95% CI = 0.03, 1.32; P = 0.041). In non-Hispanic blacks, participants in the intensive group reported slightly worse change in the IIEF-5 score than those in the standard group (mean difference = −1.17; 95% CI = −1.92, −0.41; P = 0.0025). However, in non-Hispanic whites and non-Hispanic blacks, further adjustment for the baseline IIEF-5 score resulted in nonsignificant differences (P &gt; 0.05) according to the treatment group. In Hispanic/other participants, there were no significant differences in change in the IIEF-5 score between the two treatment groups (P = 0.40). In a subgroup of 280 participants who did not report ED at baseline, the incidence of ED did not differ in the two treatment groups (P = 0.53) and was without interaction by race-ethnicity.

Clinical Implications

The effect of intensive treatment of blood pressure on erectile function was very small overall and likely not of great clinical magnitude.

Strength & Limitations

Although this study included a validated measure of erectile function, testosterone, other androgen, and estrogen levels were not assessed.

Conclusion

In a sample of male patients at high risk for cardiovascular events but without diabetes, targeting a SBP of less than 120 mm Hg, as compared with less than 140 mm Hg, resulted in statistically significant effects on erectile function that differed in accordance with race-ethnicity, although the clinical importance of the differences may be of small magnitude.