Continuous Finger-cuff Arterial Pressure Monitoring and Intraoperative Hypotension During Non-cardiac Surgery: the Randomized DETECT II Trial

Continuous Finger-cuff Arterial Pressure Monitoring and Intraoperative Hypotension During Non-cardiac Surgery: the Randomized DETECT II Trial

This is a randomized trial (1) investigating whether continuous finger-cuff - compared to intermittent oscillometric - arterial pressure monitoring reduces the amount of intraoperative hypotension (specifically, from the start of induction of general anesthesia until the end of surgery) in low-to-moderate risk patients having elective non-cardiac surgery.

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We will include three types of patients:

1. Patients scheduled for ambulatory (outpatient) elective non-cardiac surgery expected to last ≥30 minutes
2. Low-risk patients (ASA I+II) having inpatient elective non-cardiac surgery expected to last ≥60 minutes
3. Moderate-risk patients (ASA III) having inpatient elective non-cardiac surgery expected to last ≥60 minutes

We will only include patients who are 18 years or older; who will have general anesthesia; and in whom intermittent arterial pressure monitoring with upper-arm cuff oscillometry is planned.

Patients that meet one or more of the following exclusion criteria cannot participate in the trial:

• Emergency surgery
• Patients on renal replacement therapy
• Contraindications for finger-cuff monitoring (e.g., Raynaud disease)