Noninvasive vascular laboratory for evaluation of peripheral arterial occlusive disease: Part II--clinical applications: chronic, usually atherosclerotic, lower extremity ischemia.

摘要: Abbreviations: ABI 5 ankle/brachial index, CDFI color duplex flow imaging, CW continuous wave, EST exercise stress test, PAOD peripheral arterial occlusive disease, PW pulsed SVR systolic velocity ratio, tcPO2 transcutaneous oxygen tension THE noninvasive vascular laboratory has become a validated and valued diagnostic tool for evaluation of patients with chronic disease (PAOD) the lower extremities. Most such have atherosclerosis as cause PAOD. Because techniques are widely available, relatively inexpensive, well-tolerated, provide quantitative physiologic information, they most commonly used first line objective modalities to confirm diagnosis, establish severity ischemia, estimate anatomic level(s) involvement in who suspected based on historical symptoms physical signs. The findings laboratory, conjunction clinical presentation patient, typically dictate need type more expensive potentially invasive imaging studies anatomy, well possible operative or percutaneous interventions. In addition, same features make these well-suited periodic surveillance after revascularization define impact intervention detect complications at time when corrective actions can be undertaken prior deterioration. Part I this three-part “State Art Review” series dealt hemodynamic principles normal disturbed blood flow, common instruments (1). II focuses techniques, interpretive guidelines, validation, role tests that been devised assess adequacy extremity supply tissue oxygenation, localize characterize PAOD, if present.