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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
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Related Experiment Video

Updated: Jul 1, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
13:08

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay

Published on: September 9, 2012

Congenital deficiency of factor VII.

M Sikka1, S Gomber, N Madan

  • 1Department of Pathology, UCMS & GTB Hospital, Shahdara, Delhi.

Indian Journal of Pediatrics
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

Congenital factor VII deficiency, a rare bleeding disorder, was diagnosed in a five-year-old child presenting with recurrent epistaxis. The child is reportedly doing well under medical observation.

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Area of Science:

  • Hematology
  • Pediatric Medicine
  • Rare Bleeding Disorders

Background:

  • Congenital factor VII deficiency is a rare inherited bleeding disorder.
  • It is caused by mutations in the F7 gene, leading to reduced levels or activity of coagulation factor VII.
  • Clinical manifestations can range from mild bruising to severe hemorrhage.

Observation:

  • A five-year-old child with a history of recurrent epistaxis was evaluated.
  • The patient was born into a non-consanguineous marriage.
  • Initial laboratory tests revealed a markedly prolonged prothrombin time (PT).

Findings:

  • Bleeding time (BT), partial thromboplastin time with Kaolin (PTTK), and platelet count were within normal limits.
  • These findings are consistent with isolated factor VII deficiency.
  • The diagnosis was confirmed in the pediatric patient.

Implications:

  • Early diagnosis and management are crucial for preventing severe bleeding complications.
  • Factor replacement therapy or other hemostatic agents can be used for treatment.
  • This case highlights the importance of considering rare bleeding disorders in children with unexplained bleeding symptoms.