Difference between revisions of "Low ECG voltage"

(Clinical Features)
(Differential Diagnosis)
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==Differential Diagnosis==
 
==Differential Diagnosis==
[[File:Low_Voltage_ECG.png|thumb|Specific causes of low voltage ECG]]
+
===[[Low ECG voltage]]===
[[File:Low voltage ECG.png|thumb|Sample ECG]]
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==== Cardiac ====
=== Cardiac ===
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*Post-[[MI]]
*Post-MI
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*[[Infiltrative cardiomyopathy]]
*Infiltrative cardiomyopathy
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*[[Myocarditis]]
*Myocarditis
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*[[Hypothyroidism]]
*Hypothyroidism
+
 
=== Pericardial ===
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==== Pericardial ====
*Effusion
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*[[Pericardial effusion|Effusion]]
*Constrictive pericarditis
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*Constrictive [[pericarditis]]
 
*Pneumopericardium
 
*Pneumopericardium
=== Extracardiac ===
+
 
*COPD (limb leads)
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==== Extracardiac ====
*Pneumomediastinum
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*[[COPD]] (limb leads)
*Pneumothorax
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*[[Pneumomediastinum]]
*Pleural effusion
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*[[Pneumothorax]]
*Pulmonary edema
+
*[[Pleural effusion]]
*Peripheral edema
+
*[[Pulmonary edema]]
 +
*[[Peripheral edema]]
 
*Obesity
 
*Obesity
  

Revision as of 13:45, 5 June 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

Low ECG voltage

Cardiac

Pericardial

Extracardiac

Diagnosis

  • 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

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