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A popular theory termed the "no flow, no grow" hypothesis suggest that primary anatomic defects of the aortic and mitral valves lead to malformations of the left ventricle and its outflow tract. [9] These primary defects can be divided into those that lead to outflow tract obstruction or reduced left ventricular filling. [ 7 ]
The surviving cardiac myocytes either arrange in parallel or in series to each other, contributing to ventricular dilatation or ventricular hypertrophy, depending on the loading stress on the ventricular wall. [7] Besides, reduced expression of V1 myosin and L-type calcium channels on cardiac myocytes are also thought to cause cardiac remodeling.
This process is particularly apparent in the ventricles, and particularly so in the left ventricle. Noncompaction cardiomyopathy results when there is failure of this process of compaction. Because the consequence of non-compaction is particularly evident in the left ventricle, the condition is also called left ventricular noncompaction. Other ...
The wall of the left ventricle increases in size by about 15–20% of its normal capacity. No decrease of the diastolic function of the left ventricle occurs. [9] The athlete may also experience an irregular heartbeat and a resting pulse rate between 40 and 60 beats per minute (bradycardia). [10]
The left ventricle is the most common location of cardiac fibroma and accounts for approximately 57% of cardiac fibroma cases followed by the right ventricle with 27.5% of cases. [1] Symptoms of the disease depend on the size of the tumor, its location relative to the conduction system, and whether it obstructs blood flow. Two-thirds of ...
Restrictive cardiomyopathy (RCM) is a form of cardiomyopathy in which the walls of the heart are rigid (but not thickened). [2] [3] Thus the heart is restricted from stretching and filling with blood properly. It is the least common of the three original subtypes of cardiomyopathy: hypertrophic, dilated, and restrictive. [1]
Certain diseases such as neuroendocrine tumor of the small intestine (also known by the obsolete term carcinoid), which sometimes release large amounts of 5-hydroxytryptamine, commonly known as 5-HT or serotonin into the blood, may produce a characteristic pattern of mostly right-sided cardiac fibrosis which can be identified with echocardiography.
Inferior left ventricle wall scar, short axis echocardiography view Myocardial scarring is the accumulation of fibrous tissue resulting after some form of trauma to the cardiac tissue. [ 1 ] [ 2 ] Fibrosis is the formation of excess tissue in replacement of necrotic or extensively damaged tissue.