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Ultraslow deflation automated sphygmomanometry in continuous-flow-left ventricular assist device patients
Emily Hendricks1, Tony Calkins1, Tommy Cohen1
1Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, FL, USA.
Summary
Accurate blood pressure (BP) monitoring is crucial for patients with a left ventricular assist device (LVAD). An ultraslow deflation automated sphygmomanometer offers a reliable and user-friendly solution for BP management in these individuals.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Hypertension is a significant risk factor for complications in patients with left ventricular assist devices (LVADs).
- Accurate blood pressure (BP) measurement in LVAD recipients can be challenging due to variations in pulsatility and aortic valve opening.
- Effective BP management is essential for improving outcomes in LVAD patients.
Purpose of the Study:
- To assess the accuracy and ease of use of an ultraslow deflation automated sphygmomanometer for BP measurement in patients with continuous-flow LVADs.
- To evaluate the device's utility in both inpatient and ambulatory settings.
Main Methods:
- A pilot study involving 7 inpatients with HeartMate 3 (HM3) LVADs and 11 outpatients (9 HM3, 2 HeartWare HVAD).
- BP measurements were taken using the ultraslow deflation device and compared with arterial line monitoring (inpatients) or Doppler RTF (outpatients).
- Multiple measurements were performed across different times and by different users to ensure reliability.
Main Results:
- No significant differences in mean arterial pressure (MAP) were found between the ultraslow deflation device and reference methods in either inpatient or outpatient settings.
- MAP measurements were consistent across different modalities and users within individual patients.
Conclusions:
- The ultraslow deflation automated sphygmomanometer demonstrates reliability, accuracy, and ease of use for BP monitoring in LVAD patients.
- This device may offer a more accessible and patient-friendly approach to BP management for individuals with LVADs.
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