Difference between revisions of "Low ECG voltage"

(Differential Diagnosis)
(Text replacement - "==Diagnosis==" to "==Evaluation==")
 
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==Differential Diagnosis==
 
==Differential Diagnosis==
 +
[[File:Low_Voltage_ECG.png|thumb|Specific causes of low voltage ECG]]
 
===[[Low ECG voltage]]===
 
===[[Low ECG voltage]]===
==== Cardiac ====
+
====Cardiac====
 
*Post-[[MI]]
 
*Post-[[MI]]
 
*[[Infiltrative cardiomyopathy]]
 
*[[Infiltrative cardiomyopathy]]
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*[[Hypothyroidism]]
 
*[[Hypothyroidism]]
  
==== Pericardial ====
+
====Pericardial====
 
*[[Pericardial effusion|Effusion]]
 
*[[Pericardial effusion|Effusion]]
 
*Constrictive [[pericarditis]]
 
*Constrictive [[pericarditis]]
 
*Pneumopericardium
 
*Pneumopericardium
  
==== Extracardiac ====
+
====Extracardiac====
 
*[[COPD]] (limb leads)
 
*[[COPD]] (limb leads)
 
*[[Pneumomediastinum]]
 
*[[Pneumomediastinum]]
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*Obesity
 
*Obesity
  
==Diagnosis==
+
==Evaluation==
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[[File:Low voltage ECG.png|thumb|Sample ECG]]
 
*[[ECG]]<ref>Madias JE. Low QRS voltage and its causes. J Electrocardiol. 2008;41(6):498–500. doi:10.1016/j.jelectrocard.2008.06.021</ref>
 
*[[ECG]]<ref>Madias JE. Low QRS voltage and its causes. J Electrocardiol. 2008;41(6):498–500. doi:10.1016/j.jelectrocard.2008.06.021</ref>
 
**QRS < 5 mm in limb leads
 
**QRS < 5 mm in limb leads
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==See Also==
 
==See Also==
 
*[[ECG Basics]]
 
*[[ECG Basics]]
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 +
==External Links==
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*[http://ddxof.com/low-voltage-ecg/ DDxOf: Differential Diagnosis of Low Voltage ECG]
  
 
==References==
 
==References==

Latest revision as of 10:43, 22 July 2016

Background

General Causes

  • Fluid, fat or air attenuating signal
  • Myocardial infiltration
  • Loss of viable myocardium

Clinical Features

  • Frequently asymptomatic, depends on underlying cause

Differential Diagnosis

Specific causes of low voltage ECG

Low ECG voltage

Cardiac

Pericardial

Extracardiac

Evaluation

Sample ECG
  • ECG[1]
    • QRS < 5 mm in limb leads
    • QRS < 10 mm in chest leads

Management

  • Treat underlying condition

Disposition

  • Depends on underlying condition

See Also

External Links

References

  1. Madias JE. Low QRS voltage and its causes. J Electrocardiol. 2008;41(6):498–500. doi:10.1016/j.jelectrocard.2008.06.021