Abstract：
AIM:To develop and evaluate a method to detect circulation in the presence of organized rhythms (ORs) during resuscitation using signals acquired by defibrillation pads. METHODS:Segments containing electrocardiogram (ECG) and thoracic impedance (TI) signals free of artifacts were used. The ECG corresponded to ORs classified as pulseless electrical activity (PEA) or pulse-generating rhythm (PR). A first dataset containing 1091 segments was split into training and test sets to develop and validate the circulation detector. The method processed ECG and TI to obtain the impedance circulation component (ICC). Morphological features were extracted from ECG and ICC, and combined into a classifier to discriminate between PEA and PR. The performance of the method was evaluated in terms of sensitivity (PR) and specificity (PEA). A second dataset (86 segments from different patients) was used to assess two application of the method: confirmation of arrest by recognizing absence of circulation during ORs and detection of return of spontaneous circulation (ROSC) during resuscitation. In both cases, time to confirmation of arrest/ROSC was determined. RESULTS:The method showed a sensitivity/specificity of 92.1%/90.3% and 92.2%/91.9% for training and test sets respectively. The method confirmed cardiac arrest with a specificity of 93.3% with a median delay of 0s after the first OR annotation. ROSC was detected with a sensitivity of 94.4% with a median delay of 57s from ROSC onset. CONCLUSION:The method showed good performance, and can be reliably used to distinguish perfusing from non-perfusing ORs.
journal_name
Resuscitationjournal_title
Resuscitationauthors
Alonso E,Aramendi E,Daya M,Irusta U,Chicote B,Russell JK,Tereshchenko LGdoi
10.1016/j.resuscitation.2015.11.014subject
Has Abstractpub_date
2016-02-01 00:00:00pages
56-62eissn
0300-9572issn
1873-1570pii
S0300-9572(15)00887-4journal_volume
99pub_type
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