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Right ventricular hypertrophy is the intermediate stage between increased right ventricular pressure (in the early stages) and right ventricle failure (in the later stages). [11] As such, management of right ventricular hypertrophy is about either preventing the development of right ventricular hypertrophy in the first place, or preventing the ...
When left bundle-branch block (LBBB) is accompanied by right axis deviation (RAD), the rare combination is considered to be highly suggestive of dilated or congestive cardiomyopathy. [ 29 ] [ 30 ] Echocardiogram shows left ventricular dilatation with normal or thinned walls and reduced ejection fraction .
The underlying commonality in these disease states is an increase in pressures that the ventricles experience. For example, in tetralogy of Fallot, the right ventricle is exposed to the high pressures of the left heart due to a defect in the septum; as a result the right ventricle undergoes hypertrophy to compensate for these increased pressures.
Dilated cardiomyopathy is the most common type of cardiomegaly. In this condition, the walls of the left and/or right ventricles of the heart become thin and stretched. [29] In the other types, the heart's left ventricle becomes abnormally thick. Hypertrophy is usually what causes left ventricular enlargement.
Hypertrophic cardiomyopathy affects about 1 in 500 people while dilated cardiomyopathy affects 1 in 2,500. [3] [10] They resulted in 354,000 deaths up from 294,000 in 1990. [7] [11] Arrhythmogenic right ventricular dysplasia is more common in young people. [2]
It can broadly be classified as either right atrial hypertrophy (RAH), overgrowth, or dilation, like an expanding balloon. Common causes include pulmonary hypertension , which can be the primary defect leading to RAE, or pulmonary hypertension secondary to tricuspid stenosis ; pulmonary stenosis or Tetralogy of Fallot i.e. congenital diseases ...
In more severe cases it is a consequence of dilation of the right ventricle, leading to displacement of the papillary muscles which control the valve's ability to close. [13] Dilation of the right ventricle occurs secondary to ventricular septal defects, right to left shunting of blood, eisenmenger syndrome, hyperthyroidism, and pulmonary stenosis.
Pressure overload of the right ventricle leads to right ventricular hypertrophy; right image. Pressure overload refers to the pathological state of cardiac muscle in which it has to contract while experiencing an excessive afterload .