If a patient has a genetic defect causing decreased fibrinogen production, why does platelet aggregation become impaired?

💡 Explanation

Platelet aggregation depends on fibrinogen binding to platelet receptors to form fibrin bridges between platelets. Reduced fibrinogen impairs this mechanism, because platelets cannot effectively cross-link to create a stable plug. Therefore, aggregation is impaired, rather than proceeding normally or being related to calcium or vWF.

• Why does elevated inhibin B during ovarian stimulation protocols sometimes prevent successful oocyte retrieval?
• A woman experiences premature luteolysis after IVF; which consequence follows regarding implantation?
• If a novel influenza strain evades antibody neutralization, which consequence follows regarding CD8+ T-cell mediated immunity?
• Why does heart failure become likely in individuals with untreated beriberi?
• If a football player experiences a rotational head impact, which cascade explains why diffuse axonal injury occurs, exceeding cellular strain tolerance?
• Why does wearing tight gloves in cold weather increase the risk of frostbite in the fingers, compared to wearing looser fitting gloves?