Understanding Hemoperitoneum: Internal Abdominal Bleeding Risks

Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026

Quick Answer: What is hemoperitoneum?

Hemoperitoneum is bleeding inside the peritoneal cavity, the space between the abdominal wall and internal organs [1]. Because this cavity can hold a large volume of blood, the bleeding can quickly lead to hypovolemic shock [1], in which the heart cannot pump enough blood to the tissues. It is an emergency requiring rapid assessment and treatment to stop the bleeding.

What the research says

• Spontaneous hemoperitoneum is rare but dangerous. A surgical review describes it as a rare, life-threatening condition usually caused by nontraumatic rupture of the liver, spleen, or abdominal blood vessels in the setting of underlying disease, with management built around angioembolization or surgery (Kasotakis, Surgical Clinics of North America, 2014) [2].

• A quick bedside ultrasound can miss bleeding, so it is not enough on its own. In a meta-analysis of children with blunt abdominal injury, FAST had a sensitivity of 56.5% and a specificity of 94.68%, though sensitivity and specificity were both 100% in hemodynamically unstable children, and a negative abdominal CT had a negative predictive value of 99.8% (Schöneberg et al., Zentralblatt für Chirurgie, 2013) [3].

• Pregnancy adds a rare, serious cause. A review of spontaneous hemoperitoneum in pregnancy found it most often presents in the second half of pregnancy with abdominal pain, signs of low blood volume, a falling hemoglobin level, and fetal distress, that surgery is suitable in most cases, and that perinatal mortality has not improved even as maternal outcomes have (Zilberman Sharon et al., Obstetrical & Gynecological Survey, 2023) [4].

Key Takeaways

Understanding Hemoperitoneum

Hemoperitoneum, also known as intraperitoneal hemorrhage or intra-abdominal hemorrhage, occurs when blood collects in the peritoneal cavity [1]. The peritoneum is a thin membrane that lines the abdominal wall and covers most of the organs in the abdomen. When this space fills with blood, it can interfere with organ function and deplete the body's total blood volume.

The danger of hemoperitoneum lies in the "hidden" nature of the bleeding. The abdominal cavity is large enough to hold several liters of blood, meaning a person can lose a life-threatening amount of blood internally without visible external signs. If left untreated, the resulting drop in blood pressure leads to shock, organ failure, and potentially death [1].

Symptoms and Warning Signs

The symptoms of hemoperitoneum can vary depending on the speed and volume of the blood loss. While some cases present with sudden, excruciating pain, others may develop more gradually.

Common Clinical Signs

• Acute Abdominal Pain: Sharp or dull pain in the abdomen or pelvis [1] that often worsens with movement.

• Abdominal Distension: Visible swelling or bloating of the stomach area as blood accumulates [1].

• Tenderness: Significant pain when the abdomen is touched or pressed [1].

• Signs of Shock: Dizziness, extreme weakness, nausea, and a rapid heart rate (tachycardia) [1] as the body struggles to maintain blood flow.

Primary Causes of Internal Bleeding

Medical professionals categorize the causes of hemoperitoneum into three main groups: traumatic, spontaneous, and iatrogenic.

1. Traumatic Causes

Trauma is the most frequent cause of hemoperitoneum [1]. Blunt impact injuries—such as those sustained in car accidents, falls, or contact sports—can cause internal organs like the liver or spleen to rupture [1]. Penetrating injuries, such as stab or gunshot wounds, can directly sever blood vessels within the cavity.

2. Spontaneous (Nontraumatic) Causes

Spontaneous bleeding occurs without a direct external injury. This is often due to underlying health conditions, including:

• Vascular Issues: Ruptured aneurysms or arteriovenous malformations (AVMs) [1].

• Organ Rupture: Spontaneous rupture of the spleen, gallbladder, or gastrointestinal tract.

• Tumors and Cysts: Ruptured tumors (liver or kidney) or ruptured ovarian cysts [1].

• Pregnancy Complications: Ectopic pregnancy or spontaneous hemoperitoneum in pregnancy (SHiP), a rare but serious condition occurring in the second or third trimester [1] [4].

3. Iatrogenic Causes

Iatrogenic hemoperitoneum is an accidental side effect of a medical procedure. While rare, it can occur during laparoscopy, C-sections, biopsies of the liver or kidney, or during endoscopic procedures like a colonoscopy [1].

Diagnosis and Clinical Assessment

Rapid diagnosis is essential for survival. Emergency rooms typically use a combination of physical exams and advanced imaging.

Treatment and Recovery

The primary goal of treatment is to stop the active bleeding and restore the patient's blood volume.

Emergency Interventions

• Surgical Repair: Surgeons use laparoscopy or open surgery to find damaged vessels and seal them [1] using sutures, clips, or heat.

• Embolization: A minimally invasive procedure where a catheter is used to block a bleeding vessel from the inside [1] [2].

• Fluid Resuscitation: Patients receive IV fluids and blood transfusions [1] to combat the effects of blood loss and shock.

Management and Monitoring

In stable cases with minor bleeding, doctors may choose "conservative management," which involves close monitoring in a hospital setting, pain management, and repeated imaging to ensure the bleeding has stopped on its own.

Conclusion

Hemoperitoneum is a critical condition that demands immediate medical attention. Whether caused by a sudden accident or a spontaneous internal rupture, the risks of shock and organ failure make every minute count. Recognizing the signs of acute abdominal pain and dizziness after an injury can be the difference between a successful recovery and a life-threatening outcome.

Frequently Asked Questions (FAQ)

What is the most common cause of hemoperitoneum?

Traumatic injury, such as a car accident or a fall, is the most common cause [1].

Can you survive hemoperitoneum?

Yes, with rapid diagnosis and emergency treatment, most patients survive. [1]

Is hemoperitoneum the same as a stomach ache?

No, it involves actual blood filling the abdominal cavity and is far more serious.

How fast can you lose blood in the abdomen?

The cavity is large, so several liters can be lost within minutes if a major artery ruptures.

What does a FAST scan do?

It uses ultrasound to quickly check for "free fluid" (blood) in the abdomen in emergency settings [1].

Can a ruptured ovarian cyst cause this?

Yes, a large ruptured cyst can lead to significant internal bleeding [1].

What is an ectopic pregnancy?

A pregnancy where the egg implants outside the uterus, which can rupture and cause hemoperitoneum.

Is abdominal swelling always a sign of bleeding?

Not always, but in an emergency context, it is a major warning sign.

What is hypovolemic shock?

A life-threatening condition where low blood volume prevents the heart from pumping enough blood.

Can blood thinners increase the risk?

Yes, patients on anticoagulants are at higher risk for significant bleeding after minor trauma.

What is iatrogenic bleeding?

Bleeding caused accidentally during a medical procedure or surgery.

Can a liver biopsy cause hemoperitoneum?

Yes, it is a known but rare complication of the procedure. [1]

What is the peritoneum?

The thin, silk-like membrane that lines the inner abdominal wall.

How is the bleeding stopped?

Usually through surgery or embolization of the bleeding vessel [1] [2].

Do all cases require surgery?

No, stable patients with minor bleeds may be monitored without surgery [1].

What is SHiP?

Spontaneous Hemoperitoneum in Pregnancy, a rare emergency during the later stages of pregnancy [1] [4].

Can endometriosis cause internal bleeding?

In rare cases, it has been linked to spontaneous bleeding during pregnancy [1] [4].

What is an AVM?

An arteriovenous malformation, which is an abnormal tangle of blood vessels that can rupture.

Is hemoperitoneum painful?

Yes, most patients experience acute, severe abdominal or pelvic pain [1].

Can you feel blood moving in your abdomen?

Not usually, but you will feel the pressure and pain of the accumulation.

What happens if it isn't treated?

It leads to shock, multiple organ failure, and death [1].

How long is the recovery?

It depends on the cause and treatment; surgical recovery can take several weeks.

Can a sports injury cause this?

Yes, blunt force to the stomach in sports like football or hockey can rupture the spleen.

Is jaundice a symptom?

It can be if the liver or bile ducts are involved in the injury.

What is paracentesis?

Using a needle to remove fluid from the peritoneal cavity for testing [1].

Can a ruptured aneurysm cause this?

Yes, particularly a ruptured abdominal aortic aneurysm.

Is hemoperitoneum common in newborns?

It is rare but can occur due to birth trauma or liver injury.

What is the difference between hemoperitoneum and hemothorax?

Hemoperitoneum is in the abdomen; hemothorax is in the chest cavity.

Can a fall cause internal bleeding without a bruise?

Yes, internal organs can be damaged even if there is no visible bruising on the skin.

What is a hematoma?

A collection of blood outside of blood vessels, which can rupture into the cavity.

Can a colonoscopy cause this?

It is a very rare but possible complication if the bowel is perforated.

What is the first thing a doctor does for this?

Stabilize the patient with fluids and perform a FAST ultrasound.

Can you have hemoperitoneum without pain?

It is rare, but some patients in deep shock may have altered pain perception.

Is it hereditary?

The condition itself isn't, but bleeding disorders that increase risk can be.

Can stress cause internal bleeding?

No, but it can worsen underlying conditions like ulcers that might eventually perforate.

What is a ruptured spleen?

A common traumatic cause where the spleen's surface breaks, leaking blood.

How do doctors know if the bleeding stopped?

Through repeated imaging and monitoring of blood pressure and hemoglobin levels.

Can you get this from a cough?

Extremely rare, but violent coughing has been linked to vessel rupture in compromised patients.

Is a blood transfusion always needed?

Not always, but it is common in cases with significant blood loss.

What is laparoscopy?

A minimally invasive surgery using small incisions and a camera.

Can an IVF pregnancy increase risk?

Some studies suggest a slight increase in the risk of SHiP.

What is the mortality rate?

It varies widely based on the cause and how quickly treatment is received [1].

Can a gallbladder rupture cause this?

Yes, though it more often causes peritonitis (inflammation from bile).

What is a "blow to the stomach"?

Any blunt force impact that compresses the internal organs against the spine.

Can you prevent hemoperitoneum?

By wearing seatbelts, using protective gear in sports, and managing vascular health.

What is a "perforated ulcer"?

A hole in the stomach lining that can bleed into the cavity.

Is tachycardia always a sign of bleeding?

No, but it is a key sign of the body trying to compensate for blood loss.

What is a "distended abdomen"?

A stomach that is firm and swollen, often due to fluid or gas.

Who should I call if I suspect this?

Call 911 or your local emergency services immediately.

Related Reading

Understanding Hypovolemic Shock: Causes, Symptoms, and Emergency Treatment explains the shock that can follow major internal bleeding.

What Is a Ruptured Spleen? A Plain-Language Guide to the Injury That Can Turn Serious Fast describes a ruptured spleen, a common cause of abdominal bleeding.

Ectopic Pregnancy: Symptoms, Causes, and Treatment covers ectopic pregnancy, a cause of internal bleeding in women.

Internal Bleeding: A Comprehensive Guide to Recognizing Symptoms and Seeking Care explains the warning signs of internal bleeding and when to get help.

References

1. Cleveland Clinic. Hemoperitoneum. Cleveland Clinic. Last updated December 11, 2023. https://my.clevelandclinic.org/health/diseases/hemoperitoneum

2. Kasotakis G. Spontaneous hemoperitoneum. Surgical Clinics of North America. 2014;94(1):65-69. PMID: 24267498. https://doi.org/10.1016/j.suc.2013.10.006

3. Schöneberg C, Tampier S, Hussmann B, et al. Diagnostic management in paediatric blunt abdominal trauma: a systematic review with meta-analysis [article in German]. Zentralblatt für Chirurgie. 2013;139(6):584-591. PMID: 23907844. https://doi.org/10.1055/s-0032-1328645

4. Zilberman Sharon N, Shiber Y, Vaknin Z, et al. Spontaneous hemoperitoneum in pregnancy and endometriosis: a new challenge in a known disease. Obstetrical & Gynecological Survey. 2023;78(3):165-170. PMID: 36893336. https://doi.org/10.1097/OGX.0000000000001107

Disclaimer

The information provided in this article is for educational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Hemoperitoneum is a medical emergency: if you suspect you or someone else is experiencing internal bleeding, seek immediate emergency medical care.