2021 CINC ORAL
Date:
🎤 Talk Overview:
In medical clinics, oscillometric automated sphygmomanometers are widely used for blood pressure (BP) measurement. However, few studies have examined how the stability of oscillometric pulse waveforms affects BP accuracy. This study specifically investigates this issue.
🔬 Research Focus:
Cuff pressure signals were measured during the slow deflation phase from 20 healthy subjects under two conditions: 1. Quiet and still 2. While moving their fingers
Oscillometric pulse waveforms were extracted from the cuff signals, and a second-order Gaussian model was used to fit the waveform peaks.
📊 Methodology:
- Waveform Smoothness: The root mean square error (RMSE) between the fitted curve and the pulse amplitudes was calculated to assess waveform smoothness.
- Results:
- Finger movement increased the RMSE by 0.28 mmHg.
- It also caused a significant increase in:
- Systolic BP (SBP): Increased by 7.2 mmHg (P < 0.01).
- Diastolic BP (DBP): Increased by 9.2 mmHg (P < 0.01).
📝 Key Takeaway:
This study demonstrates that not staying still during BP measurement can significantly impact BP accuracy and waveform stability. Movement introduces notable errors that can skew the results.
📍 Location: Brno, Czech Republic
📅 Date: 2021-09-15