| AHF | acute heart failure; American Health Foundation; American Hepatic Foundation; American Hospital Form... |
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| AHRF | acute hypoxemic respiratory failure; American Hearing Research Foundation |
| ALF | acute liver failure; American Liver Foundation; assisted living facilities |
| ALVF | acute left ventricular failure |
| APORF | acute postoperative renal failure |
| chronic persisting hepatitis | A form of chronic hepatitis that is usually benign, not progressing to cirrhosis, and usually asymptomatic without physical findings but with continuing abnormalities of tests of liver status. Synonym: chronic persistent hepatitis. (05 Mar 2000) |
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| chronic phase | Refers to the early stages of chronic myelogenous leukaemia. The number of immature, abnormal white blood cells in the bone marrow and blood is higher than normal, but lower than in the accelerated or blast phase. (12 Dec 1998) |
| chronic pleurisy | Vague or indefinite term for long-standing inflammation of the pleura of any aetiology (e.g., tuberculosis). (05 Mar 2000) |
| chronic pneumonia | Vague or indefinite term for long-standing inflammation of pulmonary tissue of any aetiology. (05 Mar 2000) |
| chronic progressive chorea | A progressive disorder usually beginning in young to middle age, consisting of a triad of choreoathetosis, dementia, and autosomal dominant inheritance with complete penetrance. Bilateral marked wasting of the putamen and the head of the caudate nucleus is characteristic. Synonym: chronic progressive chorea, degenerative chorea, hereditary chorea, Huntington's disease. (05 Mar 2000) |
| chronic progressive external ophthalmoplegia | A specific type of slowly worsening weakness of the ocular muscles, usually associated with a pigmentary retinopathy. See: Kearns-Sayre syndrome, oculopharyngeal dystrophy. Synonym: ocular myopathy. (05 Mar 2000) |
| chronic progressive syphilitic meningoencephalitis | Syphilitic infection manifested as dementia (often with delusional features), dysarthria, seizures, myoclonic jerks, action tremor, impaired walking and standing, pupillary abnormalities, and abnormal CSF findings. Synonym: chronic progressive syphilitic meningoencephalitis. (05 Mar 2000) |
| chronic pyelonephritis | Chronic inflammation of the renal parenchyma and pelvis resulting from bacterial infection, characterised by calyceal deformities and overlying large flat renal scars with patchy distribution. (05 Mar 2000) |
| chronic rejection | A transplant rejection occurring after a few or many months, mainly from persisting serum antibody action. (05 Mar 2000) |
| chronic respiratory disease | A common and serious disease of the respiratory tract of chickens caused by the bacterium Mycoplasma gallinarum; secondary infection with Escherichia coli is common. (05 Mar 2000) |
| chronic rheumatism | A non-specific disorder of the joints, slow in progress, producing a painful thickening and contraction of the fibrous structures, interfering with motion, and causing deformity. (05 Mar 2000) |
| chronic rhinitis | A protracted sluggish inflammation of the nasal mucous membrane; in the later stages the mucous membrane with its glands may be thickened (hypertrophic rhinitis) or thinned (atrophic rhinitis). (05 Mar 2000) |
| chronic shock | The state of peripheral circulatory insufficiency developing in elderly patients with a debilitating disease, e.g., carcinoma; a subnormal blood volume makes the patient susceptible to haemorrhagic shock as a result of even a moderate blood loss such as may occur during an operation. (05 Mar 2000) |
| chronic soroche | Loss of high altitude tolerance after prolonged exposure (e.g., by residence), characterised by extreme polycythemia, exaggerated hypoxaemia, and reduced mental and physical capacity; relieved by descent. Synonym: altitude erythraemia, chronic soroche, Monge's disease. (05 Mar 2000) |
| chronic subglottic laryngitis | chorditis vocalis inferior |