Urology practice · 2025
Disproportionality Analysis of Hypotension-Related Adverse Drug Reactions Associated With Type 1a Selective Alpha-Blockers in VigiBase.
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Song Jonathan J, Qian Zhiyu Jason, Cho Mansoo, Nguyen David-Dan, Trinh Quoc-Dien, Wollin Daniel A
Аннотация
INTRODUCTION: Some evidence suggests no association between type 1a (T1a) selective alpha-blockers and hypotension-related adverse drug reactions (HR-ADRs), although safety concerns still exist. We sought to investigate the association of HR-ADRs with selective T1a blockers and identify at-risk groups.
METHODS: We used disproportionality analysis to detect signals of HR-ADRs (dizziness, fainting, falls, and fractures) reported with selective T1a blocker use (tamsulosin and silodosin) in VigiBase, a global database of individual case safety reports. Excluding duplicates, all reports were included (1967-2022). Significance was determined using lower bound 95% empiric Bayes estimator > 1; only then were reporting odds ratios (RORs) and 95% CIs reported. Subgroup analyses were stratified by sex, age (<65 and ≥65 years), and indication for men only (urinary stone disease [USD] and benign prostatic hyperplasia [BPH]).
RESULTS: We identified 5963 reports of HR-ADRs with selective T1a blockers. Selective T1a blockers were significantly associated with HR-ADRs (ROR 1.46; 95% CI 1.42-1.49). In men, selective T1a blockers for USD were associated with increased risk of HR-ADRs (ROR 1.60; 95% CI 1.56-1.65), which only remained significant in the older subgroup (ROR 6.70; 95% CI 3.20-14.01). No association was found for BPH. In women, selective T1a blockers were associated with an increased risk of HR-ADRs (ROR 1.09; 95% CI 0.99-1.09). This was only significant in the younger subgroup (ROR 1.17; 95% CI 1.03-1.32).
CONCLUSIONS: In older men with USD and younger women, selective T1a blockers were associated with higher risk of HR-ADRs, suggesting the need for continued monitoring in these populations. No signal was observed for men with BPH.
METHODS: We used disproportionality analysis to detect signals of HR-ADRs (dizziness, fainting, falls, and fractures) reported with selective T1a blocker use (tamsulosin and silodosin) in VigiBase, a global database of individual case safety reports. Excluding duplicates, all reports were included (1967-2022). Significance was determined using lower bound 95% empiric Bayes estimator > 1; only then were reporting odds ratios (RORs) and 95% CIs reported. Subgroup analyses were stratified by sex, age (<65 and ≥65 years), and indication for men only (urinary stone disease [USD] and benign prostatic hyperplasia [BPH]).
RESULTS: We identified 5963 reports of HR-ADRs with selective T1a blockers. Selective T1a blockers were significantly associated with HR-ADRs (ROR 1.46; 95% CI 1.42-1.49). In men, selective T1a blockers for USD were associated with increased risk of HR-ADRs (ROR 1.60; 95% CI 1.56-1.65), which only remained significant in the older subgroup (ROR 6.70; 95% CI 3.20-14.01). No association was found for BPH. In women, selective T1a blockers were associated with an increased risk of HR-ADRs (ROR 1.09; 95% CI 0.99-1.09). This was only significant in the younger subgroup (ROR 1.17; 95% CI 1.03-1.32).
CONCLUSIONS: In older men with USD and younger women, selective T1a blockers were associated with higher risk of HR-ADRs, suggesting the need for continued monitoring in these populations. No signal was observed for men with BPH.