Time delay correction of the synchrogram for optimized detection of cardiorespiratory coordination.
The cardiorespiratory synchrogram, a graphical tool based on the stroboscopic technique, is an established method for evaluating phase-locking between cardiac and respiratory oscillators. In the original method, the phase of the respiratory oscillator is observed at the instants of time when the pha...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 49; no. 11; pp. 1249 - 1260 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Nov2011
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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=104595293&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104595293 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Nov2011 vid: 49 iid: 11 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104595293 NLM21830053 2011349650 10.1007/s11517-011-0822-3 NLM21830053 104595293 ppf: 1249 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Time delay correction of the synchrogram for optimized detection of cardiorespiratory coordination. aug: au: Kabir MM Saint DA Nalivaiko E Abbott D Baumert M Kabir, Muammar M Saint, David A Nalivaiko, Eugene Abbott, Derek Baumert, Mathias affil: Centre for Heart Rhythm Disorders, The University of Adelaide, Adelaide, SA 5005, Australia sug: subj: Heart Rate Physiology Respiratory Mechanics Physiology Signal Processing, Computer Assisted Biological Clocks Physiology Electrocardiography Methods Female Male Posture Physiology Young Adult Female Male ab: The cardiorespiratory synchrogram, a graphical tool based on the stroboscopic technique, is an established method for evaluating phase-locking between cardiac and respiratory oscillators. In the original method, the phase of the respiratory oscillator is observed at the instants of time when the phase of the cardiac oscillator attains a certain value. In this article, we introduced an additional adaptive delay in the cardiac oscillator based on the maximisation of the cross-correlation or symbolic coupling traces between the phases of respiration and the delayed R-R intervals. We then investigated phase coordination in thirteen normal subjects (five males, eight females; age: 19-24 years) for different body postures. Cardiorespiratory coordination was observed to be significantly reduced in the upright position (supine vs. upright: 11.9 ± 5.1 vs. 6.9 ± 3.6, P < 0.05). Compared to the original algorithm we observed an increase in the detection of average cardiorespiratory coordination (supine original vs. delay: 11.9 vs. 18.9%), together with a decrease in standard deviation of the percentage of coordination in all the subjects, after introducing the heart rate delay (supine original vs. delay: 5.1 vs. 4.4%). In conclusion, the performance of the synchrogram technique was improved by including an adaptive delay in the cardiac oscillator. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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