Low ECG voltage: Difference between revisions
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==Differential Diagnosis== | ==Differential Diagnosis== | ||
[[File:Low_Voltage_ECG.png|thumb|Specific causes of low voltage ECG]] | [[File:Low_Voltage_ECG.png|thumb|Specific causes of low voltage ECG]] | ||
[[File:Low voltage ECG.png|thumb|Sample ECG]] | |||
=== Cardiac === | === Cardiac === | ||
*Post-MI | *Post-MI |
Revision as of 21:06, 3 June 2016
Definition[1]
- QRS < 5 mm in limb leads
- QRS < 10 mm in chest leads
General Causes
- Fluid, fat or air attenuating signal
- Myocardial infiltration
- Loss of viable myocardium
Differential Diagnosis
Cardiac
- Post-MI
- Infiltrative cardiomyopathy
- Myocarditis
- Hypothyroidism
Pericardial
- Effusion
- Constrictive pericarditis
- Pneumopericardium
Extracardiac
- COPD (limb leads)
- Pneumomediastinum
- Pneumothorax
- Pleural effusion
- Pulmonary edema
- Peripheral edema
- Obesity
See Also
References
- ↑ Madias JE. Low QRS voltage and its causes. J Electrocardiol. 2008;41(6):498–500. doi:10.1016/j.jelectrocard.2008.06.021