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Cardiorespiratory coupling in mechanically ventilated patients studied via synchrogram analysis.
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- Author(s): Ottolina, Davide (AUTHOR); Cairo, Beatrice (AUTHOR); Fossali, Tommaso (AUTHOR); Mazzucco, Claudio (AUTHOR); Castelli, Antonio (AUTHOR); Rech, Roberto (AUTHOR); Catena, Emanuele (AUTHOR); Porta, Alberto (AUTHOR); Colombo, Riccardo (AUTHOR)
- Source:
Medical & Biological Engineering & Computing. Jun2023, Vol. 61 Issue 6, p1329-1341. 13p. 1 Diagram, 2 Charts, 3 Graphs. - Source:
- Additional Information
- Subject Terms:
- Abstract: Respiration and cardiac activity are strictly interconnected with reciprocal influences. They act as weakly coupled oscillators showing varying degrees of phase synchronization and their interactions are affected by mechanical ventilation. The study aims at differentiating the impact of three ventilatory modes on the cardiorespiratory phase coupling in critically ill patients. The coupling between respiration and heartbeat was studied through cardiorespiratory phase synchronization analysis carried out via synchrogram during pressure control ventilation (PCV), pressure support ventilation (PSV), and neurally adjusted ventilatory assist (NAVA) in critically ill patients. Twenty patients were studied under all the three ventilatory modes. Cardiorespiratory phase synchronization changed significantly across ventilatory modes. The highest synchronization degree was found during PCV session, while the lowest one with NAVA. The percentage of all epochs featuring synchronization regardless of the phase locking ratio was higher with PCV (median: 33.9%, first–third quartile: 21.3–39.3) than PSV (median: 15.7%; first–third quartile: 10.9–27.8) and NAVA (median: 3.7%; first–third quartile: 3.3–19.2). PCV induces a significant amount of cardiorespiratory phase synchronization in critically ill mechanically ventilated patients. Synchronization induced by patient-driven ventilatory modes was weaker, reaching the minimum with NAVA. Findings can be explained as a result of the more regular and powerful solicitation of the cardiorespiratory system induced by PCV. The degree of phase synchronization between cardiac and respiratory activities in mechanically ventilated humans depends on the ventilatory mode [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Medical & Biological Engineering & Computing is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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