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Heart Valve Diseases
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D006349 |
[Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).
] |
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Heart Valve Prolapse
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D016127 |
[Downward displacement of any one of the HEART VALVES from its normal position. This usually results in failed valve closure.
] |
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Heart Valve Prosthesis
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D006350 |
[A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.
] |
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Heart Valve Prosthesis Implantation
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D019918 |
[Surgical insertion of synthetic material to repair injured or diseased heart valves.
] |
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Heart Valves
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D006351 |
[Flaps of tissue that prevent regurgitation of BLOOD from the HEART VENTRICLES to the HEART ATRIA or from the PULMONARY ARTERIES or AORTA to the ventricles.
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Heart Ventricles
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D006352 |
[The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
] |
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Heart, Artificial
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D006354 |
[A pumping mechanism that duplicates the output, rate, and blood pressure of the natural heart. It may replace the function of the entire heart or a portion of it, and may be an intracorporeal, extracorporeal, or paracorporeal heart. (Dorland, 28th ed)
] |
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Heart-Assist Devices
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D006353 |
[Small pumps, often implantable, designed for temporarily assisting the heart, usually the LEFT VENTRICLE, to pump blood. They consist of a pumping chamber and a power source, which may be partially or totally external to the body and activated by electromagnetic motors.
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Heart-Lung Machine
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D006355 |
[Apparatus that provides mechanical circulatory support during open-heart surgery, by passing the heart to facilitate surgery on the organ. The basic function of the machine is to oxygenate the body's venous supply of blood and then pump it back into the arterial system. The machine also provides intracardiac suction, filtration, and temperature control. Some of the more important components of these machines include pumps, oxygenators, temperature regulators, and filters. (UMDNS, 1999)
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Heart-Lung Transplantation
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D016041 |
[The simultaneous, or near simultaneous, transference of heart and lungs from one human or animal to another.
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Heartburn
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D006356 |
[Substernal pain or burning sensation, usually associated with regurgitation of gastric juice into the esophagus.
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Heartwater Disease
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D006357 |
[A tick-borne septicemic disease of domestic and wild ruminants caused by EHRLICHIA RUMINANTIUM.
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Heat Exhaustion
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D006359 |
[A clinical syndrome caused by heat stress, such as over-exertion in a hot environment or excessive exposure to sun. It is characterized by SWEATING, water (volume) depletion, salt depletion, cool clammy skin, NAUSEA, and HEADACHE.
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Heat Shock Transcription Factors
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D000076249 |
[Heat and cold stress-inducible, transcription factors that bind to inverted 5'-NGAAN-3' pentamer DNA sequences and are regulated by POLY-ADP-RIBOSYLATION. They play essential roles as transcriptional activators of the HEAT-SHOCK RESPONSE by inducing expression of large classes of MOLECULAR CHAPERONES and heat-shock proteins. They also function in DNA REPAIR; transcriptional reactivation of latent HIV-1; and pre-mRNA processing and nuclear export of HSP70 HEAT-SHOCK PROTEINS during heat stress.
] |
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Heat Stress Disorders
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D018882 |
[A group of conditions that develop due to overexposure or overexertion in excessive environmental heat.
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Heat Stroke
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D018883 |
[A condition caused by the failure of body to dissipate heat in an excessively hot environment or during PHYSICAL EXERTION in a hot environment. Contrast to HEAT EXHAUSTION, the body temperature in heat stroke patient is dangerously high with red, hot skin accompanied by DELUSIONS; CONVULSIONS; or COMA. It can be a life-threatening emergency and is most common in infants and the elderly.
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Heat-Shock Proteins
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D006360 |
[Proteins which are synthesized in eukaryotic organisms and bacteria in response to hyperthermia and other environmental stresses. They increase thermal tolerance and perform functions essential to cell survival under these conditions.
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Heat-Shock Proteins, Small
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D050888 |
[A family of low molecular weight heat-shock proteins that can serve as MOLECULAR CHAPERONES.
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Heat-Shock Response
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D018869 |
[A sequence of responses that occur when an organism is exposed to excessive heat. In humans, an increase in skin temperature triggers muscle relaxation, sweating, and vasodilation.
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Heating
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D006361 |
[The application of heat to raise the temperature of the environment, ambient or local, or the systems for accomplishing this effect. It is distinguished from HEAT, the physical property and principle of physics.
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