The role of POPs teams in the management of outcomes and predictive factors in lower limb amputation in the older patient

Introduction:

Chronic limb-threatening ischemia (CLTI) is defined by presence of peripheral artery disease, rest pain, and/or gangrene or ulceration.1 Management of CLTI often involves a major amputation which has a 30-day in-hospital mortality of 6.6%. Despite improvements in secondary risk management, 5-year mortality remains high.1 Understanding how comorbidity affects amputation survival may help support patient optimisation and shared decision-making.

Methods:

This audit assessed the outcomes of patients who were reviewed by the POPS team using a comprehensive geriatric assessment (CGA) before undergoing a major lower limb amputation. We retrospectively analysed electronic records from 60 patients with CLTI who were admitted in an emergency setting, reviewed by the POPS team, and underwent a major lower limb amputation during 2022. The primary outcome measure was death following surgery. Data was collected from the patient records and analysed using the Chi square test.

Results:

In this group of 60 patients the 30-day mortality was 5% (3 patients) and 1-year mortality 43% (26 patients), with the average age at time of death being 77 years. Age (p=0.022) and co-morbidity (p = 0.021) were the strongest prognostic factors for mortality. Other factors like clinical frailty score (CFS), albumin concentration and length of hospital stay showed non-significant correlations with mortality in patients who underwent lower limb amputation.

Conclusion:

This study highlighted prognostic factors that could enable doctors to identify high-risk patients who may benefit from optimisation and detailed shared decision-making prior to undergoing a major lower limb amputation. As mortality is not necessarily modifiable, even in the context of a CGA in this group, it also highlights the need for advanced care planning before discharge.

References 1. Waton S, Johal A, Birmpili P, et al. National Vascular Registry: 2022 Annual Report. London: The Royal College of Surgeons of England.