Oscillometric Arterial Pressure Measurements at Different Limb Sites

University of Hamburg-Eppendorf84 enrolled

Overview

This prospective, single-center observational study aims to evaluate the measurement performance of oscillometric arterial pressure measurements at different limb sites. Specifically, oscillometric arterial pressure measurements obtained at the upper arm, forearm, thigh, and lower leg with intraarterial arterial pressure measurements will be compared in non-cardiac surgery patients. The results will provide insight into the reliability and accuracy of oscillometric blood pressure readings at alternative limb sites in clinical practice.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Blood Pressure

Interventions

Arterial pressure monitoringOTHER

We will perform oscillometric arterial pressure measurements at different limb sites.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion criteria: * Consenting patients ≥18 years scheduled for elective non-cardiac surgery with general anesthesia * Patients in whom intraarterial arterial pressure monitoring with a radial artery catheter is planned Exclusion criteria: * Patients with systolic arterial pressure interarm differences \>20 mmHg * Patients with severe peripheral arterial disease * Patients with heart rhythms other than sinus rhythm * Patients with contraindications for peripheral cuff placement (e.g., arteriovenous fistula, skin lesions) * Pregnant women

Locations (1)

University Medical Center Hamburg-Eppendorf

Hamburg, Germany, Germany

Outcomes

Primary Outcomes

Agreement between oscillometric and intraarterial arterial pressure measurements

Mean ± standard deviation of the differences with 95% limits of agreement between oscillometric arterial pressure measurements obtained at the upper arm, forearm, thigh, and lower leg and intraarterial arterial pressure measurements (for mean, systolic, and diastolic arterial pressure).

Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)

Secondary Outcomes

Correlation coefficients

Correlation coefficients between oscillometric arterial pressure measurements obtained at the upper arm, forearm, thigh, and lower leg and intraarterial arterial pressure measurements (for mean, systolic, and diastolic arterial pressure).

Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)

Classification of measurement differences

Classification of measurement differences between oscillometric arterial pressure monitoring at the upper arm, forearm, thigh, and lower leg and intraarterial arterial pressure monitoring according to their clinical relevance (for mean and systolic arterial pressure)

Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)

Percentage of oscillometric arterial pressure measurements obtained at the upper arm, forearm, thigh, and lower leg that are within ±5 mmHg of the corresponding intraarterial arterial pressure measurements

Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)

Data from ClinicalTrials.gov

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