Congenital platelet function defects are problems with platelets, one of the blood elements needed for normal blood clotting. Congenital means present from birth.
Platelet storage pool disorder; Glanzmann’s thrombasthenia; Bernard-Soulier syndrome; Platelet function defects – congenital
Causes, incidence, and risk factors
People with these disorders usually have a family history of a bleeding disorder that causes prolonged
Bernard-Soulier syndrome occurs when platelets lack a substance that sticks to the walls of blood vessels. This disorder may cause severe bleeding.
Glanzmann’s thrombasthenia is a condition caused by the lack of a protein needed for platelets to clump together. This disorder may also cause severe bleeding.
Platelet storage pool disorder (also called platelet secretion disorder) is due to one of several defects that cause easy bleeding or bruising. It is caused by the faulty storage of substances inside platelets. These substances are usually released to help platelets function properly.
- Bleeding during and after surgery
- Easy bruising
- Heavy menstrual periods
- Nosebleeds (epistaxis)
- Prolonged bleeding with small injuries
Signs and tests
The following tests may be used to diagnose this condition:
Bleeding time Complete blood count (CBC) Partial thromboplastin time (PTT) Platelet aggregation test Prothrombin time (PT)
You may need other tests. Your relatives may need to be tested.
There is no specific treatment for these disorders.
People with bleeding disorders should avoid taking aspirin and nonsteroidal anti-inflammatory drugs (such as ibuprofen and naproxen) because they are known to affect blood clotting. Patients who have severe bleeding may need platelet transfusions.
Treatment can usually control the bleeding. However, congenital platelet function defects are life-long conditions. There is no cure. Patients should take precautions to avoid bleeding.
- Severe bleeding
Iron deficiency anemiain menstruating women
Calling your health care provider
Call your health care provider if:
You have bleeding or bruising and do not know the cause
Bleeding does not respond to the usual method of control
A blood test can detect the gene responsible for the platelet defect. Genetic counseling may be helpful to couples with a family history of a congenital platelet function defect who are planning to have children in the future.