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Atrium in Medical Dictionary

Cuspid

... valve , normally located between the right atrium and the right ventricle , does not develop ... (lower heart chamber) from the right atrium (upper heart chamber). Tri cuspid ... Tri cuspid valve The valve between the right atrium and the right ventricle of the heart . ...

Left

... the heart which accepts blood from the left atrium and ejects it into the aorta to the systemic ...... The valve of the heart between the left atrium and left ventricle that prevents the flow of blood back into the atrium when the heart muscle is contracting. ...

Mitral valve

... of the mitral valve 's cusps backward into the atrium during the contraction of the heart . ... that controls blood flow between the left atrium and left ventricle in the heart . Left ... The valve of the heart between the left atrium and left ventricle that prevents the flow of ...

Tricuspid atresia

... which blood is unable to flow from the right atrium to the right ventricle because the tricuspid ... valve , normally located between the right atrium and the right ventricle , does not develop ... , the Fontan procedure connects the right atrium to the pulmonary artery directly or with a ...

Tricuspid valve

... Tricuspid valve The valve between the right atrium and the right ventricle of the heart . ... valve controls blood flow from the right atrium into the right ventricle . The pulmonary ... prevents blood from passing from the right atrium to the right ventricle as it should. ...

Atria

... the heart that pump blood into the ventricle s. Consists of right atrium and left atrium. [ Med Help International ] [ Search ] [ Ask the Doctor ... consists of bouts of rapid, regular heart beating originating in the atrium (upper chamber of the heart ). parotid recess; parotids; parotid ...

Atrial flutter

... Atrial flutter : Well- organ ized but overly rapid contraction s of the atrium of the heart (usually at a rate of 250-350 contraction s per minute). ... fibrillation ) or a fast, regular heart rhythm that begins in the atrium ( atrial flutter ). Radiofrequency catheter ablation, performed in a ...

Mitral valve prolapse

... down or abnormal bulging of the mitral valve 's cusps backward into the atrium during the contraction of the heart . Mitral valve prolapse When ... Mitral valve prolapse , an abnormality of the valve between the left atrium and left ventricle of the heart that causes backward flow of blood ...

Oxygen

... amongst ... Oxygen -poor (blue) blood returns to the right atrium from the body, passes through the right atrium and ventricle , then goes into the misconnected aorta back to the body. ...

Ventricle

... The muscular chamber of the heart which accepts blood from the left atrium and ejects it into the aorta to the systemic circulation . [ Med Help ... ... The tricuspid valve controls blood flow from the right atrium into the right ventricle . The pulmonary valve controls blood flow ...

Abdomen

... INFERIOR VENA CAVA - The large caliber vein that travels through the abdomen (from the lower extremities) and returns blood to the right atrium of the heart . [ Med Help International ] [ Search ] [ Ask the Doctor Forums ] ... AneuRx DTA (descending thoracic aorta ) stent graft ...

Bicuspid

... of the normal valve with three leaflets (triscupid). MITRAL INSUFFICIENCY - The back flow of blood from the left ventricle to the left atrium through a defective mitral [ bicuspid ] valve. The most common cause for mitral regurgitation is rheumatic fever . Aortic coarctation is more ...

Carotid

... carotid arteries). Of the peripheral arteries, those of the legs are most often affected. BARORECEPTOR - A pressure receptor in the wall of the atrium of the heart , vena cava, aortic arch, and carotid sinus that is sensitive to stretching of the wall which occurs with increased pressure. ...

Catheter

... injure the urethra . For example, the urethra could be injured from tugging on the catheter tubing or bag. The catheter enters the right atrium (upper chamber) of the heart , flows through the tricuspid valve into the right ventricle (lower chamber), through the pulmonary valve, and ...

Contraction

... signaled to relax. Normal heart contraction s begin as an electrical im pulse in the right atrium. This im pulse comes from an area of the atrium called the sinoatrial (SA) or sinus node , the "natural pacemaker ." ... rhythmic muscle contraction /relaxation (clonic activity) -- ...

Funnel

... narrow funnel spout limits the flow of fluid through a funnel . In mitral valve stenosis , blood has a difficult time flowing from the left atrium to the left ventricle . Bile from the liver is funnel ed into the gallbladder by way of the cystic duct . Between meals, the ...

Node

... atrioventricular node . Often due to abnormalities in the AV node "relay station" that lead to rapid firing of electrical impulses from the atrium which bypass the AV node under certain conditions. Chronic infectious illnesses, like tuberculosis , can cause a lymph node to be swollen ...

Paroxysm

... that causes your heart to pump. Paroxysm al atria l tachycardia (PAT) consists of bouts of rapid, regular heart beating originating in the atrium (upper chamber of the heart ). Paroxysm al atrial fibrillation episodes may recur for weeks or years, although usually the disease ...

Prolapse

... is a mucous discharge and heavy bleeding . They can be very painful. Mitral valve prolapse , an abnormality of the valve between the left atrium and left ventricle of the heart that causes backward flow of blood from the left ventricle into the left atrium. Prosthetic ...

Pulmonary atresia

... PAD ( Arteriosclerosis of the Extremities) ... For tricuspid atresia and pulmonary atresia , the Fontan procedure connects the right atrium to the pulmonary artery directly or with a conduit, and the atria l defect is closed. Tetralogy of Fallot Transposition of the great ...

Regurgitation

... involving backward flow of blood across the tricuspid valve which separates the right ventricle (lower heart chamber) from the right atrium (upper heart chamber). Regurgitation (leaking from insufficient valve closure) is caused by disease s that weaken or damage the valve or its ...

Rheumatic fever

... fever , which is a complication of untreated strep throat infections . The valve fails to close properly, and blood can flow back to the right atrium from the right ventricle , and from there back into the veins. Rheumatic heart disease : Heart damage caused by rheumatic fever . ...

Stimulus

... by the sinus node (also called the sinoatrial node , or SA node ), which is a small area of specialized tissue located in the right atrium ( right upper chamber) of the heart . The arrectores pilorum play a key role in goose bumps , a temporary local change in the skin The chain ...

Tachycardia

... ... EnSite 3000 system Diagnostic system to map complex tachycardia . The EnSite system and EnSite catheter are in ventricle trials; atrium trials are scheduled to begin. If your heart rate is too fast (known as a tachycardia ), too slow (known as a bradycardia ) or very irregular, ...

Vaginal itching

... and discharge in women. It's usually acquired by sexual contact with an infected partner. tricuspid valve The heart valve between the right atrium and the right ventricle . For itching of the groin in women, see vaginal itching . References: Habif, TP. Clinical Dermatology . 4th Ed. ...

Venous

... Veins " for more information. QuickDraw venous cannula Device used for draining nonoxygenated blood from the venae cavae and/or right atrium during cardio pulmonary bypass. Mfg: Heart port. Source: FDA approvals - 4/26/99. paraumbilical veins; parauque; paraurethral; paraurethral ...
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