title: Predict Defibrillation Outcome Using Stepping Increment of Poincare Plot for Out-of-Hospital Ventricular Fibrillation Cardiac Arrest.
abstract: Early cardiopulmonary resuscitation together with early defibrillation is a key point in the chain of survival for cardiac arrest. Optimizing the timing of defibrillation by predicting the possibility of successful electric shock can guide treatments between defibrillation and cardiopulmonary resuscitation and improve the rate of restoration of spontaneous circulation. Numerous methods have been proposed for predicting defibrillation success based on quantification of the ventricular fibrillation waveform during past decades. To date, however, no analytical technique has been widely accepted for clinical application. In the present study, we investigate whether median stepping increment that is calculated from the Euclidean distance of consecutive points in Poincare plot could be used to predict the likelihood of successful defibrillation. Electrocardiographic recordings of out-of-hospital cardiac arrest patients were obtained from the external defibrillators. The performance of the proposed method was evaluated by receiver operating characteristic curve and compared with the results of other established features. The results indicated that median stepping increment has comparable performance to the established methods in predicting the likelihood of successful defibrillation.
authors.affiliation: School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China.
authors.forename: Yushun
authors.initials: Y
authors.lastname: Gong
authors.affiliation: Emergency Department, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
authors.forename: Yubao
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Emergency Department, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Medical Engineering, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China.
authors.forename: Hehua
authors.initials: H
authors.lastname: Zhang
authors.affiliation: School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China.
authors.forename: Yongqin
authors.initials: Y
authors.lastname: Li
mesh_terms: D004554:Electric Countershock / Q000706:statistics & numerical data*; D004562:Electrocardiography; D006801:Humans; D015233:Models, Statistical; D058687:Out-of-Hospital Cardiac Arrest / Q000628:therapy*; D012372:ROC Curve; D016896:Treatment Outcome; D014693:Ventricular Fibrillation / Q000628:therapy*