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Concentric hypertrophy is a result of pressure overload on the heart, resulting in parallel sarcomerogenesis (addition of sarcomere units parallel to existing units). Eccentric hypertrophy is related to volume overload and leads to the addition of sarcomeres in series.
Concentric hypertrophy is a hypertrophic growth of a hollow organ without overall enlargement, [1] in which the walls of the organ are thickened and its capacity or volume is diminished. Sarcomeres are added in parallel, as for example occurs in hypertrophic cardiomyopathy .
The region of the plane between two concentric circles is an annulus, and analogously the region of space between two concentric spheres is a spherical shell. [6] For a given point c in the plane, the set of all circles having c as their center forms a pencil of circles. Each two circles in the pencil are concentric, and have different radii.
The commonly used method to diagnose LVH is echocardiography, with which the thickness of the muscle of the heart can be measured.The electrocardiogram (ECG) often shows signs of increased voltage from the heart in individuals with LVH, so this is often used as a screening test to determine who should undergo further testing.
Power flue – Fanned flues use the pressure created by a fan to power the movement of outside air into the appliance and combustion products to external air. Thus air and flue ducts can be much longer, of smaller diameter, and include changes of direction. Most ducting is concentric; the air duct contains the smaller flue duct within it.
Right ventricular hypertrophy (RVH) is a condition defined by an abnormal enlargement of the cardiac muscle surrounding the right ventricle.The right ventricle is one of the four chambers of the heart.
Orifice plate showing vena contracta. An orifice plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice [1] but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases.
A dorade box (also called a dorade vent, collector box, cowl vent, or simply a "ventilator") is a type of vent that permits the passage of air in and out of the cabin or engine room of a boat while keeping rain, spray, and sea wash out.