Cardiac Remote Ischemic Preconditioning Before Elective Major Vascular Surgery

Cardiac Remote Ischemic Preconditioning Before Elective Major Vascular Surgery (CRIPES)

Vascular surgery is considered a high-risk operation with an anticipated risk of major cardiovascular complications in excess of 5%. The occurrence of a cardiovascular complication after surgery carries a long-term higher mortality risk. The main objective of this investigation is to reduce the proportion of patients having major cardiovascular complications during surgery through a clinical protocol of remote preconditioning that is safe, effective and reproducible.

Inclusion Criteria:

• Eligible patients would be those undergoing elective major vascular surgery at the Minneapolis VA Medical Center for an expanding abdominal aortic aneurysm, obstructive carotid disease, and/or chronic limb ischemia during the study period. All patients must be ≥ 18 years of age and provide written informed consent.

Exclusion Criteria:

• Exclusion criteria include hypertensive crisis, acute coronary syndrome in the preceding 6 weeks, severe valvular heart disease, peripheral arterial disease of the upper extremities, manifested by a systolic blood pressure difference greater than 20 mmHg, pregnant women, patients unable to understand the consent process due to mental illness, advanced malignancy with limited life expectancy (<1 year), and hemodialysis with a fistula in the upper extremity.