Effect of respiration on Korotkoff sounds and oscillometric cuff pressure pulses during blood pressure measurement.
Blood pressure (BP) measurement accuracy depends on consistent changes in Korotkoff sounds (KorS) for manual measurement and oscillometric pulses for automated measurement, yet little is known about the direct effect of respiration on these physiological signals. The aim of this research was to quan...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 52; no. 5; pp. 467 - 474 |
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| Autores principales: | , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
May2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103819139&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103819139 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: May2014 vid: 52 iid: 5 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103819139 103819139 NLM24668326 2012554718 10.1007/s11517-014-1150-1 NLM24668326 PMC3992222 103819139 ppf: 467 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Effect of respiration on Korotkoff sounds and oscillometric cuff pressure pulses during blood pressure measurement. aug: au: Zheng, Dingchang Di Marco, Luigi Yuri Murray, Alan affil: Cardiovascular Physics and Engineering Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle, NE2 4HH, UK, dingchang.zheng@ncl.ac.uk. sug: subj: Blood Pressure Physiology Blood Pressure Determination Methods Heart Sounds Physiology Respiration Adult Female Heart Rate Physiology Male Middle Age Physics Signal Processing, Computer Assisted Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Blood pressure (BP) measurement accuracy depends on consistent changes in Korotkoff sounds (KorS) for manual measurement and oscillometric pulses for automated measurement, yet little is known about the direct effect of respiration on these physiological signals. The aim of this research was to quantitatively assess the modulation effect of respiration on Korotkoff sounds and oscillometric pulses. Systolic and diastolic blood pressures were measured manually from 30 healthy subjects (age 41 ± 12 years). Three static cuff pressure conditions were studied for two respiratory rates. Cuff pressure [with oscillometric pulses (OscP)], ECG, chest motion respiration [respiration signal (Resp), from magnetometer] and Korotkoff sounds (KorS, from digital stethoscope) were recorded twice for 20 s. The physiological data were evenly resampled. Respiratory frequency was calculated from Resp (fR), OscP (fO) and KorS (fK) from peak spectral frequency. There was no statistically significant difference between fR and fO or fK. Respiratory modulation was observed in all subjects. OscP amplitude modulation changed significantly between the two respiratory rates (p < 0.05) and between the three cuff pressures (p < 0.0001), and decreased significantly with decreasing cuff pressure (p < 0.05). The phase shift between Resp and modulation of OscP was statistically significant with respiratory rates (p < 0.05), but not with cuff pressures. It is accepted that BP in individuals is variable and that this relates to respiration; we now show that this respiration modulates oscillometric pulse and Korotkoff sound amplitudes from which BP is measured. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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