Low ECG voltage: Difference between revisions

(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==
[[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]]
==External Links==
*[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