Comparisons of Oscillometric Blood Pressure Measurements at Different Sites of the Upper Limb
Invited conference paper presented and published in conference proceedings

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摘要The importance of home blood pressure (BP) monitoring has been emphasized for achieving effective hypertension management. Currently, the most popular non-invasive BP monitors for home use are the upper-arm cuff-style oscillometric devices which determine BP from the cuff pressure oscillations during the cuff inflation/deflation induced by the pulsatile blood flow in the compressed arteries. However, the large size of the upper-arm cuff is not favorable for attachment in daily life for ambulatory BP monitoring. Therefore, the miniaturization of home BP monitors is in demand to improve their portability for frequent measurements. This work examined the oscillometric measurement of mean blood pressure(MBP) at upper arm (UA), middle forearm (MA), wrist (WR), finger proximal phalanx (FP) and finger distal phalanx (FD) on 14 young adults. The experimental results showed that the mean and standard deviation of the differences between the oscillometric MBP at UA and the other sites are 8.86±6.28 mm Hg at MA, 14.43±5.52 mm Hg at WR, 9.80±6.57 mm Hg at FP and -0.77±6.37 mm Hg at FD, respectively. Based on hand checking and literature data, the order of the ratios of the bone volume to the surrounding tissue volume from large to small is WR>MA≈FP>FD≈UA. Together with the experimental results, we infer that a larger bone-tissue volume ratio could result in a larger oscillometric MBP reading. Since the applied cuff pressure are supposed to be less effectively absorbed by the soft-tissue surrounding a larger rigid bone, it is more difficult to occlude the arteries buried in the pressure-absorbing tissue at a bonier site by the inflatable cuffs, which leads to a higher measured MBP than the real MBP. In conclusion, it is promising to develop the finger oscillometric BP monitors to be worn on the finger distal phalanx which have a compact size and provide consistent measurement results with the UA measurements.
著者Liu J, Ou Y, Yan BP, Sodini C, Zhao N
會議名稱40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'18)
會議開始日17.07.2018
會議完結日21.07.2018
會議地點Honolulu
會議國家/地區美國
出版年份2018
頁次1168 - 1171
國際標準期刊號1557-170X
語言美式英語

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