This is a randomized trial (1) investigating whether continuous non-invasive finger-cuff blood pressure monitoring reduces the area under a mean arterial pressure (MAP) of 65 mmHg within the first 15 minutes of anesthetic induction compared to intermittent blood pressure monitoring using upper-arm cuff oscillometry in patients having non-cardiac surgery; and (2) investigating whether continuous non-invasive finger-cuff blood pressure monitoring reduces the time-weighted average for MAP <65 mmHg during the intraoperative period compared to intermittent blood pressure monitoring using upper-arm cuff oscillometry in patients having non-cardiac surgery.

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Inclusion Criteria:

• Patients at least 45 years of age scheduled for elective non-cardiac surgery with general anesthesia are eligible for study inclusion if blood pressure monitoring using intermittent upper-arm cuff oscillometry is planned.

Exclusion Criteria:

• Emergency surgery,
• pregnancy,
• American Society of Anesthesiologists (ASA) physical status classification V or VI, blood pressure differences between the right and left arm of more than 20 mmHg, intraoperative invasive blood pressure monitoring, heart rhythms other than sinus rhythm.