BackgroundKidney Transplantation (KT) is widely recognized as the optimal treatment for patients with End Stage Renal Disease (ESRD), improving not only life expectancy but also quality of life. Undetected peripheral arterial disease (PAD) in patients undergoing KT may lead to lower limb ischaemic ulceration and gangrene which is associated with an increased mortality rate. If undiagnosed and untreated this may lead to limb loss and graft failure. This review aims to evaluate the current evidence related to the prognosis of chronic limb-threatening ischemia (CLTI) in patients with a KT.MethodsWe conducted a systematic review of the literature in PubMed and MEDLINE, the Cochrane database of systematic reviews, Elsevier, Web of Science, and CINAHL using relevant search keywords to identify the prognosis and progression of CLTI in patients with a KT. Outcomes of interest were CLTI and progression rate in terms of haemodynamic measurement. This systematic review adhered to the guidelines set forth by the Cochrane Collaboration. The study design, population selection, and follow-up time frame were outlined in accordance with the PRISMA guidelines.ResultsStudies have shown a decline in the ankle-brachial index (ABI) post-KT, indicating vascular deterioration. Surgical interventions and amputations are more likely, particularly on the ipsilateral side of KT. The infrapopliteal artery is the most compromised in this cohort. A low ABI was found to be an independent predictor of graft failure, doubling the risk of mortality post-KT. Quality of evidence was observed to be low primarily due to confounding and selection bias.ConclusionsThe available evidence regarding the prognosis of CLTI in individuals with KT is limited to a small number of studies offering predominantly low-quality evidence and conflicting results pertaining to PAD and its progression into CLTI. Further research is required on CLTI prognosis and progression among KT recipients.
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