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Hearing Loss, Functional
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D006315 |
[Hearing loss without a physical basis. Often observed in patients with psychological or behavioral disorders.
] |
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Hearing Loss, High-Frequency
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D006316 |
[Hearing loss in frequencies above 1000 hertz.
] |
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Hearing Loss, Mixed Conductive-Sensorineural
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D046089 |
[Hearing loss due to damage or impairment of both the conductive elements (HEARING LOSS, CONDUCTIVE) and the sensorineural elements (HEARING LOSS, SENSORINEURAL) of the ear.
] |
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Hearing Loss, Noise-Induced
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D006317 |
[Hearing loss due to exposure to explosive loud noise or chronic exposure to sound level greater than 85 dB. The hearing loss is often in the frequency range 4000-6000 hertz.
, Usually refer to hearing loss due to a single noise event such as an explosion or shotgun blast.
] |
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Hearing Loss, Sensorineural
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D006319 |
[Hearing loss resulting from damage to the COCHLEA and the sensorineural elements which lie internally beyond the oval and round windows. These elements include the AUDITORY NERVE and its connections in the BRAINSTEM.
] |
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Hearing Loss, Sudden
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D003639 |
[Complete sensorineural hearing loss which develops suddenly over a period of hours or a few days.
, Sensorineural hearing loss which develops suddenly over a period of hours or a few days. It varies in severity from mild to total deafness. Sudden deafness can be due to head trauma, vascular diseases, infections, or can appear without obvious cause or warning.
] |
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Hearing Loss, Unilateral
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D046088 |
[Partial or complete hearing loss in one ear.
] |
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Hearing Tests
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D006320 |
[Part of an ear examination that measures the ability of sound to reach the brain.
] |
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Heart
|
D006321 |
[The hollow, muscular organ that maintains the circulation of the blood.
] |
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Heart Aneurysm
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D006322 |
[A localized bulging or dilatation in the muscle wall of a heart (MYOCARDIUM), usually in the LEFT VENTRICLE. Blood-filled aneurysms are dangerous because they may burst. Fibrous aneurysms interfere with the heart function through the loss of contractility. True aneurysm is bound by the vessel wall or cardiac wall. False aneurysms are HEMATOMA caused by myocardial rupture.
] |
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Heart Arrest
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D006323 |
[Cessation of heart beat or MYOCARDIAL CONTRACTION. If it is treated within a few minutes, heart arrest can be reversed in most cases to normal cardiac rhythm and effective circulation.
] |
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Heart Arrest, Induced
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D006324 |
[A procedure to stop the contraction of MYOCARDIUM during HEART SURGERY. It is usually achieved with the use of chemicals (CARDIOPLEGIC SOLUTIONS) or cold temperature (such as chilled perfusate).
] |
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Heart Atria
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D006325 |
[The chambers of the heart, to which the BLOOD returns from the circulation.
] |
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Heart Auscultation
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D006326 |
[Act of listening for sounds within the heart.
] |
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Heart Block
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D006327 |
[Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.
] |
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Heart Bypass, Left
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D018611 |
[Diversion of the flow of blood from the pulmonary veins directly to the aorta, avoiding the left atrium and the left ventricle (Dorland, 27th ed). This is a temporary procedure usually performed to assist other surgical procedures.
] |
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Heart Bypass, Right
|
D018610 |
[Diversion of the flow of blood from the entrance to the right atrium directly to the pulmonary arteries, avoiding the right atrium and right ventricle (Dorland, 28th ed). This a permanent procedure often performed to bypass a congenitally deformed right atrium or right ventricle.
] |
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Heart Conduction System
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D006329 |
[An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.
] |
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Heart Defects, Congenital
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D006330 |
[Developmental abnormalities involving structures of the heart. These defects are present at birth but may be discovered later in life.
] |
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Heart Disease Risk Factors
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D000082742 |
[Aspects of personal behavior or lifestyle, environmental exposure, inherited conditions and characteristics, which are determined to be associated with HEART DISEASES.
] |