Format

Send to

Choose Destination
Am J Surg. 2011 Oct;202(4):427-32. doi: 10.1016/j.amjsurg.2011.04.002. Epub 2011 Jul 23.

The effect of increased hip flexion using stirrups on lower-extremity venous flow: a prospective observational study.

Author information

1
Section of Plastic Surgery, University of Michigan, Ann Arbor, 48105, USA. cpannucc@umich.edu

Abstract

BACKGROUND:

Patient positioning during surgeries for colorectal cancer may represent an unrecognized risk factor for deep venous thrombosis.

METHODS:

Twelve healthy control patients were positioned supine with knee flexion at 90°. Duplex ultrasound examined common femoral vein (CFV) and proximal femoral vein diameter, peak systolic velocity, and volume flow with hip flexion at 0°, 30°, 60°, and 90°. Data were analyzed using the paired t test.

RESULTS:

In the CFV, hip flexion to 90° was associated with a significant increase in mean volume flow when compared with hip flexion at 0° (.59 vs .36 L/min; P = .05) and 30° (.59 vs .35 L/min; P = .038). In both the CFV and proximal femoral vein, increased hip flexion was associated with significantly reduced vessel diameter and increased peak systolic velocity.

CONCLUSIONS:

Intraoperative positioning of the lower extremities represents a modifiable risk factor for deep venous thrombosis. When stirrups are used, hip flexion of 90° maximizes venous drainage from the legs.

PMID:
21788007
PMCID:
PMC3183348
DOI:
10.1016/j.amjsurg.2011.04.002
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center