Difference between revisions of "Low ECG voltage"
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| − | + | ==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== | ||
| + | [[File:Low_Voltage_ECG.png|thumb|Specific causes of low voltage ECG]] | ||
| + | ===[[Low ECG voltage]]=== | ||
| + | ====Cardiac==== | ||
| + | *Post-[[MI]] | ||
| + | *[[Infiltrative cardiomyopathy]] | ||
| + | *[[Myocarditis]] | ||
| + | *[[Hypothyroidism]] | ||
| + | |||
| + | ====Pericardial==== | ||
| + | *[[Pericardial effusion|Effusion]] | ||
| + | *Constrictive [[pericarditis]] | ||
| + | *Pneumopericardium | ||
| + | |||
| + | ====Extracardiac==== | ||
| + | *[[COPD]] (limb leads) | ||
| + | *[[Pneumomediastinum]] | ||
| + | *[[Pneumothorax]] | ||
| + | *[[Pleural effusion]] | ||
| + | *[[Pulmonary edema]] | ||
| + | *[[Peripheral edema]] | ||
| + | *Obesity | ||
| + | |||
| + | ==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> | ||
| + | **QRS < 5 mm in limb leads | ||
| + | **QRS < 10 mm in chest leads | ||
| + | |||
| + | ==Management== | ||
| + | *Treat underlying condition | ||
| + | |||
| + | ==Disposition== | ||
| + | *Depends on underlying condition | ||
==See Also== | ==See Also== | ||
*[[ECG Basics]] | *[[ECG Basics]] | ||
| − | [[Category: | + | ==External Links== |
| + | *[http://ddxof.com/low-voltage-ecg/ DDxOf: Differential Diagnosis of Low Voltage ECG] | ||
| + | |||
| + | ==References== | ||
| + | <references/> | ||
| + | |||
| + | [[Category:Cardiology]] | ||
Latest revision as of 10:43, 22 July 2016
Contents
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
- Effusion
- Constrictive pericarditis
- Pneumopericardium
Extracardiac
- COPD (limb leads)
- Pneumomediastinum
- Pneumothorax
- Pleural effusion
- Pulmonary edema
- Peripheral edema
- Obesity
Evaluation
Management
- Treat underlying condition
Disposition
- Depends on underlying condition
See Also
External Links
References
- ↑ Madias JE. Low QRS voltage and its causes. J Electrocardiol. 2008;41(6):498–500. doi:10.1016/j.jelectrocard.2008.06.021