Clinical Significance of Ankle Systolic Blood Pressure Following Exercise in Assessing Calf Muscle Tissue Ischemia in Peripheral Artery Disease
Khurana A et al. – Requirement of ankle systolic blood pressure (SBP) to decrease below 50 mm Hg after exercise has little clinical significance for assessing ischemia in calf muscle of patients with PAD limited by intermittent claudication.Methods
- Eighty–four patients with peripheral artery disease (PAD) completed a treadmill test.
- Ankle SBP <50 mm Hg following exercise was observed in only 49% (group 1), whereas 51% had ankle SBP ≥50 mm Hg (group 2).
- No group differences were observed for the decline in calf muscle StO2 to a minimum value (group 1: 18 ± 21%, group 2: 20 ± 20%; P = .60) and for the time to reach minimum StO2 (group 1: 224 ± 251 seconds, group 2: 284 ± 283 seconds; P = .30).
- Requirement of ankle SBP to decrease below 50 mm Hg after exercise has little clinical significance for assessing ischemia in calf muscle of patients with PAD limited by intermittent claudication.