The level of amputation in a dysvascular extremity is determined by:

A. Clinical inspection.

B. Xenon skin clearance.

C. Doppler systolic blood pressure ratios.

D. Transcutaneous oxygen measurements.

E. Nutritional competence and immunocompetence

DISCUSSION: Clinical competence of the extremity with observations of skin turgor, discoloration, perfusion, sensation, and integrity is the mainstay of surgical decision making. This can be complemented by transcutaneous PO2, ankle-arm systolic pressure ratios, xenon skin clearance, serum albumin levels, and total lymphocyte count.