Endovascular revascularization of the superficial femoral artery (SFA) may lead to recurrent ischemic syndromes, revascularization, or amputation. The impact of these events on mortality is unknown. We followed all patients having SFA endovascular revascularization for claudication or chronic limb-threatening ischemia in 2 cardiovascular (CV) divisions in Boston, Massachusetts. Any recurrent limb event after the initial SFA revascularization included recurrent claudication (67%), limb ulceration or gangrene (13%), repeat endovascular revascularization (61%), surgical revascularization (15%), or major (9%) or minor amputation (8%). We linked data to the National Death Index to ascertain cause of death grouped into CV mortality, or non-CV mortality. Hazard ratios (HRs) and 95% confidence intervals (95% CIs) from Cox proportional hazards and sub-HRs from Fine-Gray competing risks analyses were clustered by patient. Overall, there were 202 patients with 253 index limb endovascular procedures. A recurrent limb event occurred in 123 limbs (49%) and 93 patients (46%). Patients with and without recurrent limb events had similar numbers of deaths over follow-up (76 [62%] vs 71 [55%], respectively). In multivariable models, recurrent limb event was not related to all-cause death (HR 0.92, 95% CI 0.64 to 1.33), CV death (HR 1.29, 95% CI 0.72 to 1.30), or non-CV death (HR 0.65, CI 0.39 to 1.07). Competing risk analyses suggested male gender and chronic limb-threatening ischemia were more strongly related to CV death, and chronic kidney more strongly related to disease to non-CV death. In conclusion, recurrent limb events, which contribute to patient morbidity, do not increase the risk of all-cause or cause-specific mortality, and should not discourage repeat revascularization to relieve symptoms or ischemia.
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| http://dx.doi.org/10.1016/j.amjcard.2023.07.172 | DOI Listing |
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