Blood Pressure
Conditions
Brief summary
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.
Interventions
We will perform oscillometric arterial pressure measurements at different limb sites.
Sponsors
University of Hamburg-Eppendorf
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Agreement between oscillometric and intraarterial arterial pressure measurements | Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours) | 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). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Correlation coefficients | Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours) | 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). |
| Classification of measurement differences | Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours) | 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) |
| 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 | 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 (for mean, systolic, and diastolic arterial pressure) |
| Cross-comparisons | Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours) | 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 (for mean, systolic, and diastolic arterial pressure) |
Countries
Germany
Contacts
PRINCIPAL_INVESTIGATORAlina Bergholz, MD
University Medical Centre Hamburg-Eppendorf
Outcome results
None listed