Abstract
Symptoms of lower-extremity artery disease (LEAD) emerge from impaired vascularization in distal circulation of the extremities. Calcium channel blockers (CCB) can improve distal circulation when used as adjunctive therapy with endovascular treatment (EVT), but few studies have evaluated that. We investigated the relationship between CCB therapy and post-EVT outcomes. Through a consecutive EVT registry, we evaluated those relationships in whole cohort and the following 2 subgroups; the patients suffered from intermittent claudication (IC) or chronic limb-threatening ischemia (CLTI), with adjusting baseline characteristics by propensity score matchings. The primary endpoints were major adverse cardiac and cerebrovascular events (MACCE, a composite endpoint of all death, nonfatal myocardial infarction, and nonfatal stroke), and major adverse limb event (MALE, a composite of major amputation, acute limb ischemia, and surgical reintervention). The group that received CCB had less MALE in whole cohort (HR 0.31; 95% confidence interval (CI) 0.20–0.47), and less MACCE and MALE in CLTI cohort (HR 0.67; 0.50–0.89 and 0.32; 0.20–0.52 respectively) compared to the group that did not receive CCB. The relationships were common in the cohorts with baseline adjustment. MACCE and MALE in IC (HR 1.01; 0.57–1.80 and 0.60; 0.25–1.45, respectively) showed no significant differences both with and without baseline adjustment. CCB use was related to fewer MACCE and MALE events in adjusted patients who underwent EVT, and the trend was more evident, especially in the adjusted CLTI cohort. This study highlights the necessity of future studies regarding CCB. Clinical Trial Registration: URL: https://www.umin.ac.jp; Unique identifiers: UMIN000015100.
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Data availability
The data that support the findings of this study are available from the corresponding author, [M.H.], upon reasonable request.
Abbreviations
- CCB:
-
Calcium channel blockers
- CLTI:
-
Chronic limb–threatening ischemia
- EVT:
-
Endovascular treatment
- HR:
-
Hazard ratio
- IC:
-
Intermittent claudication
- LEAD:
-
Lower extremity artery disease
- MACCE:
-
Major adverse cardiac and cerebrovascular events
- MALE:
-
Major adverse limb events
- MI:
-
Myocardial infarction
- PSM:
-
Propensity score matching
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Ueshima, D., Higashitani, M., Mizuno, A. et al. The association of calcium channel blocker with risk of adverse limb events in patients with chronic limb-threatening ischemia after endovascular treatment. Cardiovasc Interv and Ther 38, 327–337 (2023). https://doi.org/10.1007/s12928-023-00925-y
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DOI: https://doi.org/10.1007/s12928-023-00925-y