Heel and Calf Capillary-Support Pressure in Lithotomy Positions

ABSTRACT
- A THREE-PART ANALYSIS was undertaken to increase understanding of the occurrence of pressure ulcers in lithotomy positions. An innovative measuring device was used to determine capillary pressure.
- ANKLE BLOOD PRESSURE was measured compared to ankle height in 11 participants. Ankle systolic and diastolic pressure decreased approximately 20 mmHg per foot of elevation.
- CALF AND HEEL CAPILLARY-SUPPORT pressures were measured in 15 participants in the standard lithotomy position. Capillary-support pressure for the calf was substantially less than for the heel.
- HEEL CAPILLARY-SUPPORT PRESSURES were measured in 16 participants in the high lithotomy position. As heel height increased, capillary-support pressure also increased. AORN J 81 (April 2005) 821-830.