Evaluation of Perioperative Myocardial Injury in Patients Undergoing Below-knee Lower Extremity Surgery With Peripheral Nerve Block

Peripheral nerve blocks are becoming increasingly popular in foot and ankle surgery. Patients undergoing peripheral nerve blocks have advantages such as shorter hospital stays, better postoperative pain relief, lower costs, and less opioid use.

A review of current literature revealed that myocardial damage has not been investigated in patients scheduled for below-knee lower extremity surgery. Therefore, we aimed to detect myocardial damage by monitoring high-sensitive troponin I levels, which is considered the most sensitive and effective test according to AHA/ACC (American College of Cardiology and American Heart Association) guidelines at our hospital. The secondary aim of the study was to determine which parameters correlate with myocardial damage.

Preoperatively, the patient's hemogram, biochemistry, and hsTroponin I measurements, all of which were requested during the preparation phase, will be recorded.

During the operation, the type of anesthesia, the amount of local anesthetic and adjuvant medication used for peripheral nerve blockade will be recorded.

Intraoperatively, routine anesthetic monitoring (SpO2, blood pressure, ECG, heart rate), intraoperative presence and duration of hypotension, need for inotropic support, total dose (if any), presence and duration of tachycardia and bradycardia, fluid volume administered, urine output, and operation time will be recorded.