Impact of Continuous Non-invasive Blood Pressure Monitoring on Hypotension in Patients Having Non-cardiac Surgery

Universitätsklinikum Hamburg-Eppendorf242 enrolled

Overview

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.

not provided

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Enrollment

242

Conditions

Blood Pressure Perioperative Hypotension

Interventions

In patients randomized to the continuous monitoring group, continuous non-invasive finger-cuff blood pressure monitoring will be displayed on the patient monitor. The treating anesthesiologist will be blinded to intermittent blood pressure monitoring using upper-arm cuff oscillometry.

Intermittent non-invasive blood pressure monitoringDEVICE

In patients randomized to the intermittent monitoring group, intermittent blood pressure monitoring using upper-arm cuff oscillometry will be displayed on the patient monitor. The treating anesthesiologist is blinded to continuous non-invasive finger-cuff blood pressure monitoring.

Eligibility

Sex: ALLMin age: 45 Years

Medical Language ↔ Plain English

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.

Outcomes

Primary Outcomes

Area under a MAP of 65 mmHg within the first 15 minutes of anesthetic induction between the intervention and the control group.

Time frame: 15 min

Time-weighted average for MAP <65 mmHg during the intraoperative period between the intervention and the control group.

Time frame: intraoperative