Seo Joohyun, Sodini Charles G, Lee Hae-Seung
Annu Int Conf IEEE Eng Med Biol Soc. 2018 Jul;2018:3817-3820. doi: 10.1109/EMBC.2018.8513259.
This work presents non-invasive evaluation of the arterial blood pressure (ABP) waveform during the Valsalva maneuver. Ultrasound scanning is conducted to acquire blood flow and arterial distension signals. Motion-tolerant ultrasound measurement schemes are employed by using two wide rectangular transducers. Pulse pressure (PP) estimated at the common carotid artery is compared to that of a finger waveform measured by a volume clamping device. The changes of PP are correlated between the two measurements. A more depressed dicrotic notch during the Valsalva strain is observed, and beat-to-beat variations of PP and a pulse rate caused by respiration and baroreflex is observed during the control. This validation suggests novel opportunities to investigate the pathophysiology of cardiovascular diseases through the noninvasive ABP waveform monitoring during the stress test.
这项工作展示了在瓦尔萨尔瓦动作期间对动脉血压（ABP）波形的无创评估。进行超声扫描以获取血流和动脉扩张信号。通过使用两个宽矩形换能器采用耐运动超声测量方案。将在颈总动脉处估计的脉压（PP）与通过容积钳夹装置测量的手指波形的脉压进行比较。两次测量之间PP的变化具有相关性。在瓦尔萨尔瓦动作用力期间观察到更凹陷的重搏波切迹，并且在对照期间观察到由呼吸和压力反射引起的PP逐搏变化和脉率变化。这种验证表明了通过在压力测试期间进行无创ABP波形监测来研究心血管疾病病理生理学的新机会。
