Blood Pressure
Conditions
Brief summary
This is an observational study simultaneously comparing finger-sensor and oscillometric with intra-arterial blood pressure measurements in patients having low- to moderate-risk non-cardiac surgery.
Interventions
We will record intraarterial arterial pressure, finger-sensor arterial pressure and oscillometric arterial pressure in all included patients.
Sponsors
University of Hamburg-Eppendorf
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Inclusion criteria
* ≥18 years * scheduled for elective low- to moderate-risk non-cardiac surgery with general anesthesia * planned intraarterial arterial pressure monitoring with a radial arterial catheter
Exclusion criteria
* systolic arterial pressure interarm differences \>20 mmHg * heart rhythms other than sinus rhythm * contraindications for finger-sensor arterial pressure monitoring (e.g., arteriovenous shunts, Raynaud's disease) * surgery in non-supine positions * pregnant patients.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Difference in the agreement between finger-sensor arterial pressure measurements and intraarterial arterial pressure measurements, and the agreement between oscillometric arterial pressure measurements and intraarterial arterial pressure measurements | During surgery | To investigate whether the agreement between finger-sensor arterial pressure measurements and intraarterial arterial pressure measurements (mean arterial pressure, systolic arterial pressure, and diastolic arterial pressure) is better than the agreement between oscillometric arterial pressure measurements and intraarterial arterial pressure measurements, we will perform Bland-Altman analyses. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Classification of measurement differences between finger-sensor arterial pressure measurements and intraarterial arterial pressure measurements according to their clinical importance | During surgery | To classify measurement differences (mean arterial pressure and systolic arterial pressure) between finger-sensor arterial pressure measurements and intraarterial arterial pressure measurements according to their clinical importance, we will perform error grid analyses. |
| Classification of measurement differences between oscillometric arterial pressure measurements and intraarterial arterial pressure measurements according to their clinical importance | During surgery | To classify measurement differences (mean arterial pressure and systolic arterial pressure) between oscillometric arterial pressure measurements and intraarterial arterial pressure measurements according to their clinical importance, we will perform error grid analyses. |
| Ability of finger-sensor arterial pressure monitoring to track arterial pressure changes compared to intraarterial arterial pressure monitoring | During surgery | To investigate the ability of finger-sensor arterial pressure monitoring to track arterial pressure changes (mean arterial pressure, systolic arterial pressure, and diastolic arterial pressure) compared to intraarterial arterial pressure monitoring, we will compute four-quadrant plots and calculate the concordance rate. |
| Ability of oscillometric arterial pressure monitoring to track arterial pressure changes compared to intraarterial arterial pressure monitoring | During surgery | To investigate the ability of oscillometric arterial pressure monitoring to track arterial pressure changes (mean arterial pressure, systolic arterial pressure, and diastolic arterial pressure) compared to intraarterial arterial pressure monitoring, we will computer four-quadrant plots and calculate the concordance rate. |
Countries
Germany
Contacts
PRINCIPAL_INVESTIGATORAlina Bergholz, MD
Universitätsklinikum Hamburg-Eppendorf
Outcome results
None listed