Critical Limb Ischaemia in Octogenarians: Treatment Outcomes Compared With Younger Patients.

OBJECTIVE: A growing proportion of patients with chronic limb threatening ischaemia (CLTI) are elderly, the most challenging for management decisions. The aim was to study the patient profile and outcome of CLTI in octogenarian patients, comparing them with younger patients.

METHODS: Retrospective cohort of consecutive patients hospitalised for CLTI with infrainguinal disease in a Spanish centre (2013-2020). Data on age, comorbidity, anatomical characteristics, and treatment were gathered. Patients were stratified according to age (<80 and ≥80 years). The primary outcomes were overall survival and limb salvage (LS), analysed using Kaplan-Meier and Cox regression.

RESULTS: : A total of 512 patients were enrolled: 305 were <80 years old with mean age 69.7 ± standard deviation (SD) 8.2 years, and 207 were ≥80 years old with mean age 85.3 ± SD 3.6 years. Smoking and diabetes mellitus were more frequent in younger patients (78.0% vs . 45.4%, p < .001; 68.5% vs. 59.5%, p  = .037 respectively). Older patients had a higher prevalence of heart and kidney disease (70.5% vs. 57.0%, p  = .002; 39.6% vs. 24.3%, p < .001, respectively). The arterial disease was femoropopliteal or tibial in 68.9% and 31.1% in patients <80 years and 58.9% and 41.1% in patients ≥80 years ( p  = .021). In younger patients, conservative treatment was indicated in 18.0%, endovascular treatment (ET) in 41.6%, and open or hybrid surgery (OS) in 40.3%; in patients ≥80 years these were 36.9%, 37.4%, and 25.7%, respectively ( p <. 001). Mean follow up was 23.3 ± SD 17.4 months. One and two year overall survival was 85.4% and 73.0% in younger patients and 64.1% and 51.3% in patients ≥80 years ( p < .001). LS was 83.7% and 79% at the same times in younger patients and 75.3% and 72.1% in older ones ( p  = .045). In younger patients ET led to worse LS than OS ( p  = .005) but not in older patients ( p  = .29).

CONCLUSION: Patients ≥80 years with CLTI have higher comorbidity and lower life expectancy and receive conservative treatment more frequently than younger patients. ET and OS are associated with similar survival and LS in these older patients.