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
84
We will perform oscillometric arterial pressure measurements at different limb sites.
University Medical Center Hamburg-Eppendorf
Hamburg, Germany, Germany
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)
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
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)
Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)
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Cross-comparisons
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)
Time frame: Immediate postoperative period, typically within a few hours after surgery (and in all cases within the first 24 postoperative hours)