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Chamber Hypertrophy and Enlargment: Difference between revisions
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Chamber Hypertrophy and Enlargment (view source)
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==Left ventricular hypertrophy== | ==Left ventricular hypertrophy== | ||
[[Image:E_lvh.jpg|thumb|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:E_lvh.jpg|thumb|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: | [[Image:LVH.png|thumb]] | ||
As the left ventricular becomes thicker, the QRS complexes become larger. This is especially true for leads V1-V6. The S wave in V1 is deep, the R wave in V4 is high. Often some ST depression can be seen in leads V5-V6, which is in this setting is called a 'strain pattern'. | As the left ventricular becomes thicker, the QRS complexes become larger. This is especially true for leads V1-V6. The S wave in V1 is deep, the R wave in V4 is high. Often some ST depression can be seen in leads V5-V6, which is in this setting is called a 'strain pattern'. | ||
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==Right ventricular hypertrophy== | ==Right ventricular hypertrophy== | ||
[[Image: | [[Image:RVH.png|thumb]] | ||
[[Image:E_rvh.jpg|thumb|Right ventricular hypertrohpy, the R wave is greater than the S wave in V1]] | [[Image:E_rvh.jpg|thumb|Right ventricular hypertrohpy, the R wave is greater than the S wave in V1]] | ||
Right ventricular hypertrophy occurs mainly in lung disease or in congenital heart disease. | Right ventricular hypertrophy occurs mainly in lung disease or in congenital heart disease. | ||
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[[Image:left_atrial_enlargement.jpg|thumb| Left atrial enlargement]] | [[Image:left_atrial_enlargement.jpg|thumb| Left atrial enlargement]] | ||
[[Image:LAE.png|thumb| Left atrial enlargement with ECG.]] | [[Image:LAE.png|thumb| Left atrial enlargement with ECG.]] | ||
[[Image: | [[Image:LAE_V1.png|thumb| Left atrial enlargement as seen in lead V1.]] | ||
[[Image:LAE_12lead.jpg|thumb| Linker atrium-dilatatie op een 12 kanaals ECG]] | [[Image:LAE_12lead.jpg|thumb| Linker atrium-dilatatie op een 12 kanaals ECG]] | ||
Left atrial enlargement is often seen in mitral valve insufficiency, resulting in backflow of blood from the left ventricle to the left atrium and subsequent incresed local pressure. | Left atrial enlargement is often seen in mitral valve insufficiency, resulting in backflow of blood from the left ventricle to the left atrium and subsequent incresed local pressure. | ||
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:P >1,5 mm in V1. | :P >1,5 mm in V1. | ||
[[Image:right_atrial_enlargement.jpg|thumb| Right atrial enlargement]] | [[Image:right_atrial_enlargement.jpg|thumb| Right atrial enlargement]] | ||
[[Image: | [[Image:RAE.png|thumb| Right atrial enlargement]] | ||
Right atrial enlargement can result from increased pressure in the pulmonary artery, e.g. after pulmonary embolisation. A positive part of the biphasic p-wave in lead V1 larger than the negative part indicates right atrial enlargement. The width of the p wave does not change. | Right atrial enlargement can result from increased pressure in the pulmonary artery, e.g. after pulmonary embolisation. A positive part of the biphasic p-wave in lead V1 larger than the negative part indicates right atrial enlargement. The width of the p wave does not change. | ||
{{clr}} | {{clr}} | ||