Also known as: hd.
HD has various meanings in the Health category. Discover the full forms, definitions, and usage contexts of HD in Health.
Hemodialysis, also spelled haemodialysis, commonly called kidney dialysis or simply dialysis, is a process of purifying the blood of a person whose kidneys are not working normally. This type of dialysis achieves the extracorporeal removal of waste products such as creatinine and urea and free water from the blood when the kidneys are in a state of renal failure. Hemodialysis is one of three renal replacement therapies (the other two being renal transplant and peritoneal dialysis).
HealthA congenital abnormality of the bowel in which there is absence of the ganglia in the wall of the bowel. Nerves are missing starting at the anus and extending a variable distance up the bowel. This results in megacolon above the point where the nerves are missing. Hirschsprung disease is an important condition. It is the commonest cause of lower intestinal blockage in the newborn period and later in infancy and childhood, Hirschsprung disease is a cause of chronic constipation.
HealthHalf of the diaphragm, the muscle that separates the chest cavity from the abdomen and that serves as the main muscle of respiration. Both hemidiaphragms are visible on X-ray studies from the front or back. The right hemidiaphragm is protected by the liver and is stronger than the left. The left hemidiaphragm is more often subject to rupture and hernia than the right. This may also reflect weaknesses at the points of embryologic fusion of the left hemidiaphragm.
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