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hemophilia

An inherited disorder in which the blood lacks a clotting factor, so it does not clot normally.

hee-muh-FIL-ee-uh noun

Word parts

What it means

A genetic bleeding disorder. Hemophilia A is a lack of clotting factor VIII; hemophilia B is a lack of factor IX. The gene is on the X chromosome, so it mostly affects boys, and mothers can carry it without symptoms. Bleeding into joints, muscles and after injury or surgery lasts longer than normal. Treatment replaces the missing factor.

For the nurse

Apply pressure and cold to bleeding sites and raise the limb. Avoid IM injections, rectal temperatures and aspirin or NSAIDs. Teach the family to give factor replacement, to choose safe activities such as swimming, and to wear a medical alert ID.

At a glance

Spanishhemofilia
Also writtenhaemophilia, hemophiliac

Related terms

hem/o

A word part that means blood.

platelet

A tiny cell fragment in the blood that sticks together at a wound to help form a clot.

clotting

The process by which blood thickens into a gel to plug a damaged vessel and stop bleeding; also called coagulation.

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