Short and long term mortality rates after a lower limb amputation

Area of Science:

• Medical research
• Clinical epidemiology
• Surgical outcomes

Background:

• Lower limb amputation is a significant intervention with potential for high mortality.
• Understanding post-amputation mortality rates is crucial for patient care and resource allocation.

Purpose of the Study:

• To determine mortality rates following a first lower limb amputation.
• To identify subpopulations with increased mortality risk after amputation.

Main Methods:

• Retrospective cohort study of 299 patients undergoing first transtibial or higher amputation.
• Kaplan-Meier curves and Log Rank tests for survival analysis.
• Logistic regression to assess odds of death at 30 days, 1 year, and 5 years.

Main Results:

• Overall 30-day mortality was 22%, 1-year mortality was 44%, and 5-year mortality was 77%.
• Patients with cerebrovascular disease had 2.3 times higher odds of 30-day death.
• Patients with renal disease had 3.5 times higher odds of 1-year death and 5.4 times higher odds of 5-year death.
• Age group 75-84 years showed better short-term outcomes compared to younger and older individuals.

Conclusions:

• High mortality rates underscore the frailty of the lower limb amputation population.
• Cerebrovascular disease is a significant risk factor for early mortality post-amputation.
• Renal disease is a critical predictor of both short-term and long-term mortality after lower limb amputation.