Pulseless electrical activity electrocardiogram: Difference between revisions
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==Overview== | ==Overview== | ||
==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]].<ref>Foster B, Twelve Lead Electrocardiography, 2nd edition, 2007</ref> The presence of a [[QRS interval]] > 0.20 seconds is associated with a poorer prognosis. The EKG should be carefully evaluated for signs of: | 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]].<ref>Foster B, Twelve Lead Electrocardiography, 2nd edition, 2007</ref> 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]] (peaked [[T waves]], [[complete heart block]], a ventricular escape rhythm) | *[[Hyperkalemia]] (peaked [[T waves]], [[complete heart block]], a ventricular escape rhythm) | ||
Revision as of 13:44, 17 September 2012
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Pulseless electrical activity Microchapters |
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Differentiating Pulseless Electrical Activity from other Diseases |
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Diagnosis |
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Treatment |
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Case Studies |
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Pulseless electrical activity electrocardiogram On the Web |
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American Roentgen Ray Society Images of Pulseless electrical activity electrocardiogram |
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Directions to Hospitals Treating Pulseless electrical activity |
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Risk calculators and risk factors for Pulseless electrical activity electrocardiogram |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
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:
- 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
- ↑ Foster B, Twelve Lead Electrocardiography, 2nd edition, 2007