Chamber Hypertrophy and Enlargment: Difference between revisions
Chamber Hypertrophy and Enlargment (view source)
Revision as of 12:57, 18 January 2011
, 18 January 2011→Left ventricular hypertrophy
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==Left ventricular hypertrophy== | ==Left ventricular hypertrophy== | ||
[[Image:E_lvh.jpg|thumb| | [[Image:E_lvh.jpg|thumb|right|300px|LVH. R in V5 is 26mm, S in V1 in 15mm. The sum is 41 mm which is more than 35 mm and therefore LVH is present according to the Sokolow-Lyon criteria.]] | ||
[[Image:LVH.png|thumb|250px]] | [[Image:LVH.png|thumb|250px]] | ||
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In the '''Romhilt-Estes Score''' LVH is ''likely'' with 4 or more points. LVH is ''present'' with 5 or more points: | In the '''Romhilt-Estes Score''' LVH is ''likely'' with 4 or more points. LVH is ''present'' with 5 or more points: | ||
Romhilt-Estes point score system ("diagnostic" >5 points; "probable" 4 points): | |||
* ST- | {| | ||
||ECG Criteria||Points | |||
|- | |||
||Voltage Criteria (any of): | |||
# R or S in limb leads ≥20 mm | |||
# S in V<sub>1</sub> or V<sub>2</sub> ≥30 mm | |||
# R in V<sub>5</sub> or V<sub>6</sub> ≥30 mm | |||
||3 | |||
|- | |||
||ST-T Abnormalities: | |||
* ST-T vector opposite to QRS without digitalis | |||
* ST-T vector opposite to QRS with digitalis | |||
|| | |||
3<br/> | |||
1 | |||
|- | |||
||Negative terminal P mode in V<sub>1</sub> 1 mm in depth and 0.04 sec in duration (indicates [[left atrial enlargement]]) | |||
||3 | |||
|- | |||
||Left axis deviation (QRS of -30° or more) | |||
||2 | |||
|- | |||
||QRS duration ≥0.09 sec | |||
||1 | |||
|- | |||
||Delayed [[intrinsicoid deflection]] in V<sub>5</sub> or V<sub>6</sub> (>0.05 sec) | |||
||1 | |||
|} | |||
Left ventricular hypertrophy has prognostic consequences as has been found in several studies.<cite>Levy</cite><cite>Sundstrom</cite> | Left ventricular hypertrophy has prognostic consequences as has been found in several studies.<cite>Levy</cite><cite>Sundstrom</cite> | ||