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Related Concept Videos

Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Factors Affecting Illness01:18

Factors Affecting Illness

When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness, disability,...
Vitamins01:30

Vitamins

Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced in our...
Sex-linked Disorders01:43

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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Disorders of Hemostasis01:24

Disorders of Hemostasis

Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
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X-linked Traits01:19

X-linked Traits

In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.

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Related Experiment Video

Updated: Jul 8, 2026

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice
07:20

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice

Published on: August 23, 2024

[Factor XI deficiency].

Pedro Conde1, Ana Alegria, Andrade Moniz

  • 1Serviços de Ginecologia e de Imuno-Hemoterapia, Maternidade Alfredo da Costa, Lisboa.

Acta Medica Portuguesa
|January 17, 2008
PubMed
Summary
This summary is machine-generated.

Factor XI deficiency, a rare bleeding disorder, can manifest post-surgery. Prompt diagnosis and management are crucial for patients experiencing bleeding after procedures like hysterectomy.

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Area of Science:

  • Hematology
  • Surgical Complications
  • Rare Diseases

Background:

  • Factor XI deficiency is a rare inherited bleeding disorder.
  • It may not be diagnosed until surgical complications arise.
  • Preoperative screening for coagulation disorders is vital.

Observation:

  • A 59-year-old woman experienced severe vaginal bleeding 10 days post-hysterectomy with pelvic reconstructive surgery.
  • Her symptoms indicated an underlying hemostatic defect.
  • The bleeding was attributed to undiagnosed Factor XI deficiency.

Findings:

  • The case highlights the importance of thorough preoperative hemostasis testing.
  • Early identification of Factor XI deficiency is key to preventing surgical bleeding.
  • Appropriate management strategies were implemented for the patient.

Implications:

  • This case underscores the need for vigilant preoperative assessment in patients undergoing major surgery.
  • Improved diagnostic protocols can mitigate risks associated with rare bleeding disorders.
  • Effective management of Factor XI deficiency can improve surgical outcomes and patient safety.