Mitral stenosis electrocardiogram: Difference between revisions
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{{CMG}} | {{CMG}} | ||
'''Associate Editor-In-Chief:''' {{CZ}} | '''Associate Editor-In-Chief:''' {{CZ}}; [[Varun Kumar]], M.B.B.S.; [[Lakshmi Gopalakrishnan]], M.B.B.S. | ||
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===Electrocardiographic Findings | ===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 V1 follwing may be seen: | In '''lead II''' following may be seen: | ||
*Bifid P wave with > 40 ms between the two peaks | |||
*Total P wave duration > 110 ms | |||
[[Image:P mitrale.gif|200px]] | |||
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]] | [[Image:LAE-v1.png|Left atrial enlargement as seen in lead V1|400px]] | ||
'''ECG in mitral stenosis''' | '''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''' | |||
[[Image:LAE_12lead.jpg|Left atrial enlargement, a 12 lead ECG|700px]] | |||
==References== | ==References== |
Revision as of 15:48, 9 June 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.
Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [3] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.
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