What Is Intraventricular Hemorrhage (IVH)? Causes, Symptoms, and Treatment
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer: What Is Intraventricular Hemorrhage?
Intraventricular hemorrhage (IVH) is bleeding within the brain's ventricles, the fluid-filled spaces that hold cerebrospinal fluid. [1] Blood can block normal fluid flow, enlarging the ventricles and building pressure (hydrocephalus) that damages brain tissue. [1] It is a primary concern for babies born before 32 weeks and a critical emergency for adults after major neurological trauma or vascular events. [1]
What the research says
Premature babies with any degree of IVH face a higher risk of cerebral palsy. A systematic review and meta-analysis of prospective cohort studies found that children born preterm with any degree of peri-intraventricular hemorrhage had a higher risk of cerebral palsy than those without it (pooled estimate 3.4, 95% CI 1.60-7.22; 9 studies), including in studies of babies under 1,000 grams. The review found no clear evidence of broader impairment in neuropsychomotor development, but newer studies pointed to lower intelligence scores after severe bleeds (Gotardo et al., PLoS One, 2019 [2]).
Steroids given before a preterm birth may lower IVH in some high-risk pregnancies. A systematic review of 32 studies (5,018 women and 10,819 neonates) found that, in women with chorioamnionitis (infection of the membranes around the baby), antenatal corticosteroids were associated with lower odds of IVH (pooled OR 0.41, 95% CI 0.23-0.72, low certainty) (Saito et al., BMJ Open, 2023 [3]).
In adults, clearing the blood and treating hydrocephalus is the main goal, but the best method is still being studied. A review notes that adult IVH carries high rates of illness and death because of acute hydrocephalus and secondary brain injury. In the CLEAR III trial, a drain plus alteplase irrigation reduced mortality but did not substantially improve functional outcomes compared with saline irrigation (Starnoni et al., Minerva Anestesiologica, 2017 [4]).
Key Takeaways: Understanding IVH
Feature | Description |
Nature | Bleeding within the brain's fluid-filled ventricles [1] |
Primary Risk Groups | Preterm infants (under 32 weeks) and adults with head trauma, stroke, or aneurysm [1] |
Main Complication | Hydrocephalus (fluid buildup) and increased brain pressure [1] |
Diagnosis | Head ultrasound (infants), CT scan, or MRI (older children and adults) [1] |
Urgency | Critical medical emergency requiring immediate stabilization [1] |
What Is Intraventricular Hemorrhage?
Intraventricular hemorrhage (IVH) is a serious medical condition characterized by bleeding within the brain's ventricles, which are the fluid-filled spaces that normally house cerebrospinal fluid (CSF). This fluid is essential for cushioning and protecting the brain. [1] When bleeding occurs, blood mixes with the CSF, potentially obstructing its natural flow and causing the ventricles to enlarge. [1] This expansion creates dangerous pressure on the surrounding brain tissue, requiring immediate medical intervention to prevent life-threatening complications.
What are the types and stages of intraventricular hemorrhage (IVH)?
Medical professionals categorize IVH based on where the bleeding starts and its severity. Understanding these classifications helps determine the appropriate treatment path and the likely long-term outcome.
Primary vs. Secondary IVH
Primary IVH: The bleeding originates directly within the ventricles. [1] This type is most frequently seen in preterm newborns, and it can also happen in adults, often linked to a nearby blood vessel abnormality. [1]
Secondary IVH: The bleeding begins in another part of the brain and subsequently spreads into the ventricular system. [1]
Grading Severity in Infants
For preterm infants, IVH is graded from I to IV, with higher grades indicating more extensive bleeding and higher risk:
Grade I: Bleeding is confined to a small area near the ventricles known as the germinal matrix. [1]
Grade II: Blood enters the ventricles, but they do not enlarge. [1]
Grade III: The ventricles become enlarged as they fill with blood (ventricular dilatation). [1]
Grade IV: Bleeding extends beyond the ventricles into the surrounding brain tissue. [1]
What are the symptoms of intraventricular hemorrhage?
Symptoms of IVH vary significantly depending on the age of the patient. Because infants cannot communicate their symptoms, caregivers must watch for specific physical indicators.
Age Group | Common Symptoms |
Newborns | Bulging soft spot, pale/gray/blue skin, pauses in breathing (apnea), seizures, slow heart rate, unusual sleepiness, weak muscle tone [1] |
Older Children & Adults | Sudden severe headache, confusion, nausea, vomiting, seizures, loss of consciousness, weakness or numbness [1] |
What causes intraventricular hemorrhage, and who is at risk?
The underlying causes of IVH are typically related to the fragility of blood vessels or sudden trauma to the vascular system.
Why Preterm Infants Are at Risk
Babies born before 32 weeks or weighing less than 3.3 pounds (about 1,500 grams) [1] are highly susceptible because the blood vessels in the germinal matrix of their growing brains are extremely fragile. [1] Preterm babies cannot regulate blood flow and blood pressure as well, so even small swings in oxygen or circulation can cause these vessels to rupture. [1] Other risk factors for infants include respiratory distress, the need for mechanical ventilation, air leaks in the lungs, fluctuating blood pressure or clotting problems, and severe infections like sepsis. [1]
IVH in Adults
In older children and adults, IVH is usually linked to a primary neurological problem. Common triggers include:
Stroke: Bleeding in the brain tissue that leaks into the ventricles. Chronic high blood pressure is a major risk factor. [1]
Aneurysm Rupture: A burst blood vessel that releases blood into the CSF spaces. [1]
Severe Head Trauma: Impact injuries that damage the internal structures of the brain. [1]
Vascular Abnormalities: Conditions like arteriovenous malformations (AVMs). [1]
Blood Thinners: Anticoagulants can make bleeding more likely. [1]
How is intraventricular hemorrhage managed and treated?
Treatment for IVH depends on age and focuses on preventing complications and lowering the pressure within the skull to protect brain function. For newborns, care is mainly supportive: providers may keep the baby's head slightly raised, limit sudden movements [1], and closely manage blood pressure and oxygen levels. There is no medicine that can stop the bleeding once it starts. [1]
Approach | Application |
Supportive Care | Used primarily for newborns; includes stabilizing oxygen and blood pressure. [1] |
Pressure Relief | Using an external ventricular drain (EVD) to remove excess blood and fluid. [1] |
Surgical Repair | Addressing the source of bleeding, such as repairing an aneurysm or AVM. [1] |
Permanent Shunt | A long-term solution for chronic hydrocephalus to drain fluid to the abdomen. [1] |
What is the long-term outlook and recovery for intraventricular hemorrhage?
The prognosis for IVH depends heavily on the severity of the bleed. While Grade I and II hemorrhages in infants often have positive outcomes with minimal long-term effects, Grades III and IV carry a significant risk of developmental delays, cerebral palsy, or intellectual disabilities. [1] In adults, recovery involves intensive monitoring to prevent secondary strokes and manage potential neurological deficits like memory loss or speech difficulties. [1] It can take several weeks for the body to absorb the blood. [1]
Conclusion
Intraventricular hemorrhage is a critical condition that demands rapid diagnosis and specialized care. Whether affecting a fragile newborn or an adult following a trauma, the goal remains the same: to minimize brain pressure and preserve as much neurological function as possible.
For more helpful health resources and visual guides, explore our infographic templates.
Frequently Asked Questions
What is the main cause of IVH in babies?
Fragile blood vessels in a baby's growing brain that rupture due to pressure changes. [1]
Can adults get IVH?
Yes, usually after a stroke, aneurysm, or severe head injury. [1]
Is IVH the same as a stroke?
It is a type of brain bleed; in adults, it is often caused by a stroke.
What does "ventricle" mean in the brain?
Ventricles are fluid-filled chambers that produce and store cerebrospinal fluid. [5]
How is IVH diagnosed in newborns?
Typically through a routine head ultrasound in the NICU. [1]
What is hydrocephalus?
A buildup of fluid in the brain that causes increased pressure. [1]
Can IVH be prevented in preterm births?
Not always, but good prenatal care helps reduce the risk of preterm birth, which is the biggest risk factor. [1] If preterm birth looks likely, your provider may give you medicines, such as corticosteroids, that can lower the chance of severe IVH in your baby. [1]
What is a Grade I IVH?
A small bleed limited to the germinal matrix area. [1]
What is a Grade IV IVH?
The most severe stage, where bleeding spreads into the brain tissue. [1]
How long does it take for the brain to absorb the blood?
It usually takes several weeks for the body to naturally reabsorb the blood. [1]
Does IVH always cause brain damage?
Not always; Grade I and II often resolve without permanent damage.
What is an external ventricular drain (EVD)?
A temporary tube used to drain excess fluid and blood from the brain. [1]
Can high blood pressure cause IVH?
Yes, chronic high blood pressure is a major risk factor for adults. [1]
Are seizures common with IVH?
Yes, seizures are a frequent symptom in both infants and adults.
What is the germinal matrix?
A highly vascularized area of the brain where IVH often starts in infants.
Can blood thinners increase the risk of IVH?
Yes, anticoagulants can make brain bleeds more likely and more severe.
Is IVH painful for adults?
Yes, it typically causes a sudden, severe headache. [1]
What is a brain shunt?
A permanent internal tube that redirects excess brain fluid to the abdomen. [1]
Can a baby outgrow the effects of IVH?
Many children with mild IVH lead normal lives, but severe cases may require lifelong support.
What is apnea in newborns?
A condition where a baby stops breathing for short periods.
How does IVH affect heart rate?
It can cause bradycardia, which is an abnormally slow heart rate.
Can an AVM cause IVH?
Yes, an arteriovenous malformation is an abnormal tangle of blood vessels that can burst.
Is IVH a medical emergency?
Yes, it requires immediate hospitalization and monitoring.
What is the survival rate for IVH?
Outcomes depend on severity, age, and overall health. They are generally good for mild bleeds (Grades I and II) and less favorable for severe Grade III and IV bleeds. [1]
Can IVH cause cerebral palsy?
Does IVH affect intelligence?
It can lead to intellectual disabilities in severe cases. [1]
How often are preterm babies screened for IVH?
Routine head ultrasounds are commonly used to screen preterm infants. Your NICU team decides on the timing based on your baby's risk.
Can IVH happen before birth?
It is uncommon, but IVH can occasionally occur before birth.
What is a "bulging fontanelle"?
A visible swelling of the soft spot on a baby's head due to brain pressure.
Can IVH cause a coma?
Yes, significant pressure on the brain can lead to a loss of consciousness or coma.
Is physical therapy needed after IVH?
Often, yes, to help with developmental delays or motor function issues.
Can IVH cause vision problems?
Vision changes can occur as a symptom of a brain bleed, and some children have lasting effects after severe bleeds. Your care team can arrange follow-up eye checks if needed.
What is periventricular leukomalacia (PVL)?
Does IVH affect speech?
In adults, it can cause aphasia or other communication difficulties. [1]
Can IVH be treated with medication?
There is no specific drug to stop the bleed in newborns, but supportive care and medicines are used to manage symptoms and complications. [1]
Is IVH hereditary?
Generally no, though some underlying vascular conditions may be genetic.
Can stress cause IVH?
Everyday emotional stress is not a recognized cause. IVH is linked to causes such as fragile blood vessels in preterm infants, high blood pressure, aneurysms, AVMs, head injury, stroke, and blood thinners. [1]
What is the difference between IVH and ICH?
IVH is in the ventricles; ICH (intracerebral hemorrhage) is in the brain tissue.
How is the head positioned during treatment?
For newborns, the head is often kept slightly raised [1] to help protect their fragile blood vessels and lower pressure.
Can IVH cause memory loss?
Yes, it is a common long-term complication in adult survivors.
Is IVH more common in boys or girls?
Sex is not listed among the main risk factors. The biggest risk factors in babies are being born before 32 weeks or weighing less than about 3.3 pounds (1,500 grams). [1]
Can infections cause IVH?
Yes, severe infections like sepsis can trigger bleeding in preterm infants. [1]
What is a ventricular reservoir?
A small device placed under the scalp to allow for easy drainage of brain fluid.
Does IVH affect personality?
Frontal lobe involvement or general brain trauma can lead to personality changes.
Can you have IVH without symptoms?
Mild Grade I bleeds may sometimes go unnoticed without screening.
What is the risk of a second IVH?
Adults with underlying vascular issues are at higher risk for recurrent bleeds.
How does IVH affect motor skills?
It can lead to weakness, coordination issues, or spasticity.
Is IVH related to hydrops fetalis?
No. IVH is bleeding into the brain's ventricles, while hydrops fetalis is abnormal fluid buildup in a baby's body. They are separate conditions.
Can IVH cause hearing loss?
Hearing loss is not one of the most common complications of IVH, but hearing is routinely checked in premature babies, so ask your care team about screening.
Where can I find support for families affected by IVH?
NICU support groups and neurological recovery organizations offer valuable resources.
Related Reading
References
Cleveland Clinic. Intraventricular Hemorrhage (IVH): Causes & Treatment. Cleveland Clinic. Last updated November 17, 2025. https://my.clevelandclinic.org/health/diseases/intraventricular-hemorrhage-ivh
Gotardo JW, Volkmer NFV, Stangler GP, et al. Impact of peri-intraventricular haemorrhage and periventricular leukomalacia in the neurodevelopment of preterms: a systematic review and meta-analysis. PLoS One. 2019;14(10):e0223427. PMID 31600248. https://doi.org/10.1371/journal.pone.0223427
Saito K, Nishimura E, Ota E, et al. Antenatal corticosteroids in specific groups at risk of preterm birth: a systematic review. BMJ Open. 2023;13(9):e065070. PMID 37739474. https://doi.org/10.1136/bmjopen-2022-065070
Starnoni D, Oddo M, Maduri R, et al. Thrombolysis for non-traumatic intra-ventricular hemorrhage in adults: a critical reappraisal. Minerva Anestesiol. 2017;83(9):982-993. PMID 28607341. https://doi.org/10.23736/S0375-9393.17.12073-0
National Institute of Neurological Disorders and Stroke. Hydrocephalus. National Institute of Neurological Disorders and Stroke. Last updated May 19, 2026. https://www.ninds.nih.gov/health-information/disorders/hydrocephalus
MedlinePlus. Periventricular leukomalacia: MedlinePlus Medical Encyclopedia. MedlinePlus. Last updated October 3, 2025. https://medlineplus.gov/ency/article/007232.htm
Disclaimer
This information is for educational purposes only and does not constitute medical advice. Always seek the counsel of a qualified healthcare professional regarding any medical condition or emergency. If you are experiencing a life-threatening emergency, call 911 or your local emergency services immediately.
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