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A hollow muscular organ which receives the blood from the veins and propels it into the arteries. It is divided by a musculomembranous septum into two halves-right or venous and left or arterial-each of which consists of a receiving chamber (atrium) and an ejecting chamber (ventricle).cor [NA], coeur; [A.S. heorte]
armor h. extensive to complete calcification (rarely ossification) of the pericardium usually producing constrictive pericarditis.
armored h. calcareous deposits in the pericardium due to subacute or chronic pericarditis.panzerherz;
artificial h. a mechanical pump used to replace the function of a damaged heart, either temporarily or as a permanent prosthesis.
athlete's h. a more or less loose designation for cardiac findings in healthy athletes that would be or could be abnormal in patients with disease, including atrioventricular blocks, left ventricular hypertrophy and, sometimes, benign arrhythmias and atrioventricular blocks.
athletic h. hypertrophy of the h. supposedly due to systematic athletic conditioning.
beer h. alcoholic cardiomyopathy
beriberi h. h. disease due to thiamine deficiency that may be epidemic or sporadic as characterized by cardiac metabolic damage and myocardial failure, often of the "high output" type, with edema (except in "dry" beri) and polyneuritis. The term is derived from Singhalese, "I am unable."
bony h. the presence of extensive calcareous patches in the pericardium and walls of the h., some of which chronically develop bony changes.
chaotic h. apparently totally uncoordinated cardiac action or rhythm.
crisscross h. an anomaly in which the ventricular relationships are not as expected for the given atrioventricular connection.
drop h. cardioptosia
fatty h. 1. fatty degeneration of the myocardium; 2. accumulation of adipose tissue on the external surface of the h. with occasional infiltration of fat between the muscle bundles of the h. wall.cor adiposum;
frosted h. hyaloserositis involving the pericardium.icing h;
globular h. round h
hairy h. fibrinous pericarditis
Holmes h. a variant of double inlet left ventricle where the ventricular-arterial connection is concordant and the right ventricle is rudimentary.
horizontal h. description of the h.'s electrical position; recognized in the electrocardiogram when the QRS in lead aVL resembles that in V6 and QRS in aVF resembles that in V1; also, loosely, when the electrical axis lies between -30° and +30°.
hyperthyroid h. response of the h. to hyperthyroidism, essentially the result of sympathetic stimulation producing rapid h. rates and ultimately cardiac failure and atrial fibrillation if untreated.
hypoplastic h. a small h., as seen in Addison's disease.
icing h. frosted h
intermediate h. loosely, description of the h.'s electrical axis when this is directed at approximately between +30° and +60°. For cardiac position, recognized in the electrocardiogram when the QRS complexes in both lead aVL and aVF resemble that in V6.
irritable h. obsolete term for neurocirculatory asthenia.
Jarvik artificial h. a pneumatic artificial heart.
left h. the left atrium and left ventricle.
mechanical h. term loosely applied to any mechanical circulatory assist device.
movable h. cor mobile
myxedema h. the enlarged h. associated with untreated severe hypothyroidism, often accompanied by pericardial effusion; rare in modern medicine.
ox h. a very large h. usually due to chronic hypertension or, more often to aortic valve disease.bucardia, cor bovinum;
parchment h. a congenital or acquired condition in which there is thinning of the right ventricular myocardium.right ventricular hypoplasia;
pendulous h. cor pendulum
pulmonary h. the right atrium and ventricle, receiving the venous blood and propelling it to the lungs. See also cor pulmonale.
right h. the right atrium and right ventricle.
round h. abnormally smooth arcuate contours of the heart due either to disease of the ventricles or to a false cardiac appearance produced by excessive pericardial fluid.globular h;
sabot h. coeur en sabot
semihorizontal h. loosely refers to the h.'s electrical axis when this is directed at approximately 0°. As cardiac position, recognized in the electrocardiogram when the QRS complex in lead aVL resembles V6 while that in aVF is small algebraically or absolutely.
semivertical h. loosely descriptive of the h.'s electrical axis when this is directed at approximately +60°. As cardiac position, recognized in the electrocardiogram when the QRS complex in lead aVF resembles V6 while that in aVL is small algebraically or absolutely.
soldier's h. obsolete term for neurocirculatory asthenia.
stone h. ischemic contracture of the left ventricle
systemic h. the left atrium and ventricle, receiving the aerated blood from the lungs and propelling it throughout the body.
three-chambered h. congenital abnormality in which there may be a single atrium with two ventricles or a single ventricle with two atria. Rudimentary parts of the atrial and ventricular septa may be present but are incompetent to prevent a virtual single chamber in either case.
tiger h. a fatty degenerated h. in which the fat is disposed in the form of broken stripes in the subendocardial myocardium.
tobacco h. cardiac irritability marked by irregular action, palpitation, and sometimes pain, believed to occur as a result of the excessive use of tobacco.
univentricular h. an anomaly in which all blood flows through one ventricle or in which the arterioventricular valves are committed to empty into only one chamber in the ventricular mass.
venous h. the right side, including both the atrium and ventricle, of the h.
vertical h. loosely descriptive of the h.'s electrical axis when this is directed at approximately +90°. As a cardiac position, recognized in the electrocardiogram when the QRS complex in lead aVL resembles V1 while that in aVF resembles V6.
wooden-shoe h. coeur en sabot
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