Mitral stenosis electrocardiogram: Difference between revisions
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m (New page: {{SI}} {{CMG}} '''Associate Editor-In-Chief:''' {{CZ}} {{Editor Help}} ===Electrocardiographic Findings=== * LA enlargement (P mitrale) * Right ventricular hypertrophy * [[...) |
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===Electrocardiographic Findings=== | ===Electrocardiographic Findings=== | ||
* [[LA enlargement]] ([[P mitrale]]) | *[[LA enlargement]] ([[P mitrale]]): Left atrial enlargement produces a broad, bifid P wave in lead II (P mitrale) and enlarges the terminal negative portion of the P wave in VI. | ||
In lead II following may be seen: | |||
#Bifid P wave with > 40 ms between the two peaks | |||
#Total P wave duration > 110 ms | |||
In lead V1 follwing may be seen: | |||
#Biphasic P wave with terminal negative portion > 40 ms duration | |||
#Biphasic P wave with terminal negative portion > 1mm deep | |||
[[Image:LAE-v1.png|Left atrial enlargement as seen in lead V1|400px]] | |||
*[[Right ventricular hypertrophy]]: A mean QRS axis in the frontal plane is greater than 80 and an R-to-S ratio of greater than 1 in lead V1. | |||
*[[Right axis deviation]]: mean QRS axis in the frontal plane moves toward the right as pulmonary hypertension worsens | |||
*[[Atrial fibrillation]] is commonly seen with mitral stenosis: Irregularly irregular rhythm with absence P waves | |||
'''ECG in mitral stenosis''' | |||
[[Image:LAE_12lead.jpg|Left atrial enlargement, a 12 lead ECG|400px]] | |||
==References== | ==References== |
Revision as of 20:32, 8 June 2011
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
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Electrocardiographic Findings
- LA enlargement (P mitrale): Left atrial enlargement produces a broad, bifid P wave in lead II (P mitrale) and enlarges the terminal negative portion of the P wave in VI.
In lead II following may be seen:
- Bifid P wave with > 40 ms between the two peaks
- Total P wave duration > 110 ms
In lead V1 follwing may be seen:
- Biphasic P wave with terminal negative portion > 40 ms duration
- Biphasic P wave with terminal negative portion > 1mm deep
- Right ventricular hypertrophy: A mean QRS axis in the frontal plane is greater than 80 and an R-to-S ratio of greater than 1 in lead V1.
- Right axis deviation: mean QRS axis in the frontal plane moves toward the right as pulmonary hypertension worsens
- Atrial fibrillation is commonly seen with mitral stenosis: Irregularly irregular rhythm with absence P waves
ECG in mitral stenosis