Abstract 15002: Pulse Oximetry Plethysmographic Waveform: A New Method to Identify ROSC During CPR
Introduction: Chest compressions might not benifit the circulation in CPR when the patient got ROSC. It has been reported that pulse oximetry plethysmographic waveform (POP) reflected the peripheral tissue perfusion. We noticed that POP disappeared when the patient suffered cardiac arrest, and changed during CPR. Hypothesis: We assessed the hypothesis that the changes of POP could be utilised as a new method to identify ROSC during CPR.
Methods: 617 cardiac arrest patients from 14 hospital in 10 cities were enrolled in the study. Investigate the feasibility of POP in the recognition of ROSC during CPR using time domain method and frequency domain method retrospectively. Single blind method was used in POP analysis.
Results: During chest compression in cardiac arrested patients, POP in time domain showed relatively regular compression wave (Figure 1A), while frequency domain waveforms showed a single peak, with the harmonic (Figure 1B). When ROSC achieved during chest compression, POP appeared fluctuation (Figure 2A), while frequency domain waveform showed fluctuation hybrid. Integration showed a single peak spectrum (Figure 2B), while separation showed a double peak spectrum (Figure 2C). Diagnostic tests of fluctuation hybrid using frequency domain method showed Se 0.461, Sp 0.972, PV+ 0.810, PV- 0.876. Conclusions: In conclusion, POP could be used to identify ROSC during CPR.
- cardiopulmonary resuscitation
- return of spontaneous circulation
- Pulse oximetry plethysmographic waveform
Author Disclosures: C. Li: None. J. Xu: None. H. Zhu: None. X. Yu: None.
- © 2015 by American Heart Association, Inc.