Mitral stenosis electrocardiogram: Difference between revisions
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{{ | {{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; [[Varun Kumar]], M.B.B.S.; [[Lakshmi Gopalakrishnan]], M.B.B.S. | ||
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===Electrocardiographic findings in [[Mitral stenosis]]=== | |||
===Electrocardiographic | |||
'''1.''' [[LA enlargement]]: 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. | '''1.''' [[LA enlargement]]: 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. | ||
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*Total P wave duration > 110 ms | *Total P wave duration > 110 ms | ||
[[Image:P mitrale.gif|200px]] | [[Image:P mitrale.gif|200px]] | ||
In '''lead V1''' follwing may be seen: | In '''lead V1''' follwing may be seen: | ||
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[[Image:LAE-v1.png|Left atrial enlargement as seen in lead V1|400px]] | [[Image:LAE-v1.png|Left atrial enlargement as seen in lead V1|400px]] | ||
'''2.''' [[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. | '''2.''' [[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. | ||
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'''4.''' [[Atrial fibrillation]] is commonly seen with mitral stenosis: Irregularly irregular rhythm with absence P waves. | '''4.''' [[Atrial fibrillation]] is commonly seen with mitral stenosis: Irregularly irregular rhythm with absence P waves. | ||
Below is an '''ECG in mitral stenosis''' | Below is an '''ECG in mitral stenosis''' | ||
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[[Category:Valvular heart disease]] | [[Category:Valvular heart disease]] | ||
[[Category:Cardiology]] | [[Category:Cardiology]] | ||
[[Category:Cardiac surgery]] | |||
[[Category:Surgery]] | |||
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Revision as of 21:38, 9 September 2011
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Varun Kumar, M.B.B.S.; Lakshmi Gopalakrishnan, M.B.B.S.
Electrocardiographic findings in Mitral stenosis
1. LA enlargement: 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
2. 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.
3. Right axis deviation: mean QRS axis in the frontal plane moves toward the right as pulmonary hypertension worsens.
4. Atrial fibrillation is commonly seen with mitral stenosis: Irregularly irregular rhythm with absence P waves.
Below is an ECG in mitral stenosis
