Pulseless electrical activity electrocardiogram
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
The appearance of the electrocardiogram in the setting of PEA varies, but several common patterns exist. There may be a normal sinus rhythm or sinus tachycardia, with discernible P waves and QRS complexes. Sometimes there is a bradycardia, with or without P waves, and often there is a wide QRS complex.[1] The presence of a QRS interval > 0.20 seconds is associated with a poorer prognosis. The EKG should be carefully evaluated for signs of Hyperkalemia, ST segment elevation MI, hypothermia, QRS interval prolongation suggests tricyclic antidepressant overdose
Electrocardiogram
The appearance of the electrocardiogram in the setting of PEA varies, but several common patterns exist. There may be a normal sinus rhythm or sinus tachycardia, with discernible P waves and QRS complexes. Sometimes there is a bradycardia, with or without P waves, and often there is a wide QRS complex.[1] The presence of a QRS interval > 0.20 seconds is associated with a poorer prognosis. The EKG should be carefully evaluated for signs of:[2][3]
- Hyperkalemia (peaked T waves, complete heart block, a ventricular escape rhythm)
- ST segment elevation MI should be ruled out
- Osborne waves suggest hypothermia
- QRS interval prolongation suggests tricyclic antidepressant overdose
References
- ↑ 1.0 1.1 Foster B, Twelve Lead Electrocardiography, 2nd edition, 2007
- ↑ Mehta C, Brady W (2012). "Pulseless electrical activity in cardiac arrest: electrocardiographic presentations and management considerations based on the electrocardiogram". Am J Emerg Med. 30 (1): 236–9. doi:10.1016/j.ajem.2010.08.017. PMID 20970286.
- ↑ Luong DH, Cheung PY, O'Reilly M, Lee TF, Schmolzer GM (2018). "Electrocardiography vs. Auscultation to Assess Heart Rate During Cardiac Arrest With Pulseless Electrical Activity in Newborn Infants". Front Pediatr. 6: 366. doi:10.3389/fped.2018.00366. PMC 6277703. PMID 30538976.