Ultrasound-Guided Peripheral Nerve Block for Emergency Below-Knee Amputation in a High-Risk Patient With Coagulopathy: A Case Report.

Emergency below-knee amputation (BKA) in patients with significant comorbidities and coagulopathy presents formidable anesthetic challenges, as a central neuraxial blockade and general anesthesia are frequently contraindicated. We report the case of a 57-year-old female patient with uncontrolled diabetes mellitus, chronic kidney disease, coronary artery disease, and an elevated international normalized ratio (INR) of 1.6, necessitating urgent BKA for a septic diabetic foot ulcer.