Related Experiment Video
Updated: May 26, 2026

Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
Published on: August 25, 2022
Neonatal bleeding in haemophilia: a European cohort study
M Richards1, G Lavigne Lissalde, C Combescure
1Paediatric Haematology Department; Leeds General Infirmary, Leeds, UK. Michael.richards@leedsth.nhs.uk
Assisted delivery significantly increases the risk of neonatal head bleeds in infants with haemophilia. Maternal awareness of haemophilia carrier status may offer protection against these bleeds.
Area of Science:
- Pediatrics
- Hematology
- Obstetrics
Background:
- Birth presents the initial hemostatic challenge for infants with hemophilia.
- Neonatal bleeding, particularly head bleeds, is a critical concern in these infants.
Purpose of the Study:
- To investigate the association between perinatal risk factors and major neonatal bleeding in infants diagnosed with hemophilia.
- To identify specific risk factors contributing to neonatal head bleeds in this population.
Main Methods:
- An observational cohort study involving 508 children with hemophilia A or B across 12 European treatment centers.
- Data collected from children born between 1990 and 2008.
- Univariate analysis was employed to assess risk factors for bleeding.
Main Results:
- Eighteen (3.5%) infants experienced head bleeds within the first 28 days of life, including cephalohaematomas and intracranial bleeds.
- Assisted delivery (forceps/vacuum) emerged as the sole significant risk factor for neonatal head bleeding (OR 8.84).
- Maternal awareness of hemophilia carrier status showed a protective trend against assisted delivery, though not statistically significant for bleeding events.
Conclusions:
- Assisted delivery is a primary risk factor for neonatal head bleeds in infants with hemophilia.
- While not statistically significant, maternal awareness of carrier status may offer a protective effect.
- Further research with larger cohorts may elucidate the protective role of maternal awareness and other factors.
Related Concept Videos
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Epistaxis
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
Venous Thrombosis IV: Nursing Management
Esophageal Varices-II: Clinical Features and Management
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...

