occult bleeding

bleeding /bleed·ing/ (-ing)

1. the escape of blood, as from an injured vessel.

2. phlebotomy.

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dysfunctional uterine bleeding  (DUB) bleeding from the uterus when no organic lesions are present.

implantation bleeding  that occurring at the time of implantation of the blastocyst in the decidua.

occult bleeding  escape of blood in such small quantity that it can be detected only by chemical test or by microscopic or spectroscopic examination.

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bleeding [blēd´ing]

1. escape of blood from an injured vessel; see also hemorrhage.

2. phlebotomy.

dysfunctional uterine bleeding bleeding from the nonmenstruating uterus when no organic lesions are present.

implantation bleeding that occurring at the time of implantation of the zygote in the decidua.

occult bleeding escape of blood in such small quantity that it can be detected only by chemical tests or by microscopic or spectroscopic examination.

bleeding time the time required for a standardized wound to stop bleeding. The bleeding time test is used as a screening procedure to detect both congenital and acquired platelet disorders; it measures the ability of platelets to arrest bleeding and hence gives an estimate of platelet number and level of functioning. There are several methods of performing the bleeding time. In Ivy's test, incisions are made on the forearm, a sphygmomanometer is inflated to a standard of 40 mm around the upper arm, and the time until cessation of bleeding is recorded. The template method is a variation in which a template with a slit in it is laid on the forearm, and the slit and the knife making the skin incision are both standardized. The most widely used template is the Simplate. Normally bleeding will cease in 2 to 9 minutes. Qualitative platelet disorders, thrombocytopenia (platelet count of less than 100,000/mm³), and the use of aspirin will prolong the bleeding time.

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bleeding,

n the flowing of blood.

bleeding disorders,

n.pl hemorrhagic disorders including capillary abnormalities, platelet deficiencies, and blood clotting defects characterized by spontaneous and sometimes uncontrollable bleeding. Consideration before most invasive dental procedures.

bleeding, gingival,

n See gingival bleeding.

bleeding, occult

n a hemorrhage of such small proportions that the blood can be detected only by chemical test, microscope, or spectroscope.

bleeding points,

n.pl a series of puncture points made through the gingival tissue; used as a guide for making the gingivectomy incision.

bleeding time,

n the time required for blood to stop flowing from a tiny wound. Normal bleeding time is from 2 to 6 minutes. Bleeding time is increased in disorders of platelet count, uremia, and ingestion of aspirin and other antiinflammatory medications.

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bleeding

1. the escape of blood, as from an injured vessel. See also hemorrhage.

2. the purposeful withdrawal of blood from a vessel of the body; venesection; phlebotomy. See also blood sampling.

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bleeding disorders

see hemorrhagic disease, coagulopathy.

incomplete bleeding

the carcass of an animal slaughtered for meat which is incompletely bled out has a darker meat and more blood in vessels and the heart cavities than a properly slaughtered animal. This gives it an appearance resembling a fevered carcass.

occult bleeding

escape of blood in such small quantity that it can be detected only by chemical tests or by microscopic or spectroscopic examination.

bleeding time

the time required for a small pinpoint wound to cease bleeding. If done properly, the test can be helpful in determining the functional capacity of platelets and of vasoconstriction.

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occult bleeding

See Occult blood.