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Accuracy of oscillometric blood pressure measurement in atrial fibrillation

Rudolf K Feenstra1, Cor P Allaart2,3, Gijs F N Berkelmans4

  • 1VUmc School of Medical Sciences, Amsterdam.

Blood Pressure Monitoring
|December 20, 2017
PubMed

Insights

Automated oscillometry (AO) has limited accuracy for blood pressure measurement in atrial fibrillation (AF) patients. Accuracy decreases with high blood pressure variability and heart frequency.

Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Atrial fibrillation (AF) presents challenges for accurate blood pressure (BP) monitoring.
  • Automated oscillometry (AO) is a common non-invasive BP measurement technique.

Purpose of the Study:

  • To evaluate the accuracy of AO for BP measurement in outpatients with AF.
  • To investigate the impact of beat-to-beat BP variability and heart frequency (HF) on AO accuracy in AF patients.

Main Methods:

  • Comparison of AO measurements (Welch Allyn Spot Vital Signs and Philips M3002A IntelliVue ×2) against beat-to-beat BP using the Volume Clamp Method (VCM).
  • Analysis of AO accuracy stratified by tertiles of beat-to-beat BP variability and HF.

Main Results:

  • AO measurements showed deviations from VCM in both AF and sinus rhythm (SR) patients.
  • Accuracy of AO (both SBP and DBP) was reduced in patients with high beat-to-beat BP variability and high HF.
  • Specific deviations were noted for both devices tested.

Conclusions:

  • Automated oscillometry demonstrates limited accuracy for BP monitoring in AF patients.
  • Inaccuracy of AO can be substantial in individual AF patients.
  • High beat-to-beat BP variability and high HF significantly impair AO accuracy in AF.
Abstract

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