Correlation between Recovery Times of Lower Limb Ischemia after Walking Exercise as Measured by Near-infrared Spectroscopy and Prognosis of Cardiovascular Events in Patients with Arteriosclerosis Obliterans

• Published in: Myakkangaku = The Journal of Japanese College of Angiology Vol. 52; no. February; pp. 123 - 127
• Main Authors: Saiki, Naozumi, Takae, Hisahito, Shigematsu, Hiroshi, Koizumi, Nobusato, Watanabe, Yoshiko, Obitsu, Yukio
• Format: Journal Article
• Language: Japanese
• Published: Japanese College of Angiology 2012
• Subjects: atherothrombosis; cardiovascular disease; near-infrared spectroscopy; peripheral artery disease; prognosis
• ISSN: 0387-1126; 1880-8840
• DOI: 10.7133/jca.52.123

We estimated the correlation between recovery time (RT) of lower limb ischemia after walking exercise as measured by near-infrared spectroscopy (NIRS) and prognosis of cardiovascular ischemic events in patients with arteriosclerosis obliterans (ASO). Twenty-two patients were examined and the mean follow-up period was 9.2±2.1 years. The patients in whom cardiovascular events occurred (group E: n=10; 45.5%) and those in whom cardiovascular events did not occur (group N: n=12; 55.5%) showed no significant difference in RT, but the RT in the lower limb of patients with severe ischemia was longer in group E than in group N (208.1±37.0 sec vs. 146.8±33.8 sec). RT measured by NIRS may be useful as a prognostic predictor of cardiovascular events in patients with ASO.