Measurement of Revascularization Effect Using NIRS in BTK Arteries

Measurement of Revascularization Effect Using Near Infrared Spectroscopy in Below the Knee Arteries

Patient with occluded below the knee arteries and chronic limb ischemia Rutherford class V-VI are enrolled.

During endovascular recanalisation procedure changes in tissue oxygen amount is recorded using near infrared spectroscopy (NIRS).

Primary hypothesis - NIRS can be used to determine sufficient amount of blood reaching the ulcered ishemic area.

Secondary hypothesis - NIRS can be useful in detecting early recoil after BTK recanalisation.

Inclusion Criteria:

• Critical limb ischemia Rutherford V-VI
• At least one artery below the knee is planned to revascularize

Exclusion Criteria:

• Blood oxygen saturation below 85% because of any comorbidities
• Life expectancy less than 12 months
• Unavoidable amputation above ankle
• Skin diseases preventing the use of NIRS