Emphysematous gastritis: Causes, treatment, and more

What is emphysematous gastritis?

Emphysematous gastritis is a rare, life-threatening infection of the stomach in which
gas-forming microorganisms invade the stomach wall and release gas into the tissue.
On imaging tests such as a CT scan, this shows up as bubbles or streaks of air inside
the stomach wall instead of just inside the hollow center of the stomach.

Doctors consider emphysematous gastritis a medical emergency because it can progress
quickly, cause sepsis (a body-wide reaction to infection), and lead to organ failure.
Historically, reported death rates have reached around 55–60%, although outcomes are
improving as doctors recognize and treat the condition earlier.

It is important to distinguish emphysematous gastritis from a different and usually
much less serious condition called gastric emphysema. In gastric emphysema,
gas is present in the stomach wall but comes from noninfectious causes such as trauma,
vomiting, or medical instruments and is typically not associated with sepsis or high
mortality. Emphysematous gastritis, in contrast, is an aggressive infection, not just
trapped air.

What causes emphysematous gastritis?

Emphysematous gastritis develops when gas-producing microorganisms enter and colonize
the lining of the stomach. These organisms can reach the stomach wall through:

• An injury or ulcer in the stomach lining
• Direct trauma, such as from caustic substances or instrumentation
• Spread from nearby organs or through the bloodstream from another infection

The most commonly reported organisms include:

• Escherichia coli
• Streptococcal species
• Pseudomonas aeruginosa
• Clostridium perfringens and other clostridia
• Staphylococcus aureus
• Occasionally fungi such as mucormycosis or Candida species

These organisms ferment nutrients and release gas as a byproduct, which becomes
trapped inside the stomach wall and sometimes travels into nearby blood vessels
or the portal venous system.

Risk factors

Emphysematous gastritis is very rare, and most people with risk factors will never
develop it. However, case reports and reviews highlight several conditions and
exposures that seem to make it more likely:​

• Diabetes mellitus, particularly poorly controlled diabetes
• Alcohol use disorder or chronic heavy alcohol consumption
• Chronic kidney disease and other serious systemic illnesses
• Chronic lung disease, including COPD
• Recent stomach or abdominal surgery
• Peptic ulcers or other causes of stomach lining damage
• Use of NSAIDs and other medicines that increase the risk of ulcers or bleeding
• Immunosuppression, whether from medications, cancer, or other conditions
• Ingestion of corrosive substances or caustic chemicals
• Severe gastroenteritis or infections in nearby organs

Many published cases involve people with more than one of these risk factors. At
the same time, emphysematous gastritis remains so uncommon that even high-risk
individuals rarely experience it.

Symptoms and early warning signs

Emphysematous gastritis does not politely tap on the doorit tends to kick it in.
Most people become sick quickly, and symptoms can be dramatic. Common features include:​

• Sudden, severe upper abdominal pain (often in the epigastric area)
• Nausea and persistent vomiting
• Vomiting blood (hematemesis) or black, tarry stools
• Abdominal bloating or distension
• Fever and chills
• Fast heart rate and breathing
• Low blood pressure, dizziness, or fainting
• Generalized weakness, confusion, or signs of sepsis

Because this condition can deteriorate quickly, any combination of intense
stomach pain, vomiting, and signs of shock (such as confusion, very low blood
pressure, or rapid breathing) deserves emergency evaluation.

How is emphysematous gastritis diagnosed?

Diagnosis usually involves three key pieces: a concerning clinical picture,
abnormal imaging, and supportive lab findings.

Imaging tests

CT scan of the abdomen is the main test doctors rely on. In emphysematous
gastritis, CT may show:

• Gas within the stomach wall (intramural air), often streaky or linear
• Thickening of the stomach wall
• Possible gas in nearby vessels or in the portal venous system
• Signs of perforation (a hole in the stomach) or free air in the abdomen

Radiologists help distinguish emphysematous gastritis from benign gastric emphysema,
which tends to show more rounded air bubbles and is not usually associated with
severe systemic illness.

Endoscopy

Doctors may perform an upper endoscopy (EGD), using a flexible camera to look
directly at the stomach lining. They may see:

• Severe inflammation (hemorrhagic or phlegmonous gastritis)
• Ulcers, necrotic (dead) areas, or purulent drainage
• Areas of dark or discolored tissue suggesting reduced blood flow

Endoscopy can help rule out other conditions and occasionally allows for biopsies
or cultures, but its timing is carefully considered. In unstable patients, the
immediate priority is resuscitation and antibiotics rather than aggressive procedures.

Laboratory tests

Blood tests often show evidence of infection and organ stress, such as:

• High white blood cell count
• Elevated lactate indicating poor tissue perfusion
• Electrolyte imbalances from vomiting and dehydration
• Abnormal kidney or liver function tests

Blood cultures or cultures from the stomach may identify the bacteria or fungi
involved and help doctors tailor antibiotic therapy.

Treatment options

There are no official, universally accepted guidelines for managing emphysematous
gastritis. Because the condition is rare, most recommendations come from case
series, systematic reviews, and expert opinion. Still, a general treatment
framework has emerged.

Initial emergency care

Management almost always begins in an emergency department and often continues
in an intensive care unit (ICU). Key steps include:

• Stabilization: IV fluids, oxygen, and medications to support blood pressure
• Broad-spectrum IV antibiotics started as soon as possible
• Proton pump inhibitors (PPIs) to reduce stomach acid and protect the lining
• Nasogastric tube for gastric decompression if needed
• Bowel rest: no food or drink by mouth until the stomach begins to heal
• Close monitoring for signs of worsening infection or organ failure

Conservative (non-surgical) management

Earlier literature often favored surgery, but more recent reports show many
patients can recover with careful medical management alone, especially when
the diagnosis is made early and there is no perforation. Conservative treatment
usually includes:​

• High-dose IV broad-spectrum antibiotics targeting gram-negative, gram-positive, and anaerobic organisms
• PPIs or other acid-suppressing medications
• IV fluids and careful management of blood pressure, kidney function, and electrolytes
• Nutritional support, which may begin intravenously or via a feeding tube once safe
• Repeat imaging to monitor for improvement or complications

Many case reports describe complete resolution of gas in the stomach wall and
healing of ulcers with conservative therapy when patients are stabilized quickly
and do not show signs of perforation or uncontrolled sepsis.

When is surgery needed?

Surgery is reserved for severe or complicated cases. Indications may include:​

• Perforation of the stomach (a hole in the wall)
• Extensive necrosis (dead tissue) that cannot recover with medical treatment alone
• Uncontrolled bleeding
• Persistent or worsening sepsis despite aggressive antibiotics and supportive care

Surgical options range from limited removal of damaged sections of the stomach
(partial gastrectomy) to, in extreme cases, removal of the entire stomach
(total gastrectomy). The decision is made by a multidisciplinary team that
usually includes surgeons, gastroenterologists, and critical care specialists.

Complications and outlook

Potential complications of emphysematous gastritis include:​

• Septic shock and multi-organ failure
• Perforation of the stomach and peritonitis (infection in the abdominal cavity)
• Extensive gastric necrosis requiring major surgery
• Portal venous gas and liver involvement
• Prolonged ICU stay and long recovery periods

Even though older studies reported mortality rates up to 60%, more recent data
suggest that earlier diagnosis, modern antibiotics, and more refined critical
care have improved survival. Patients who arrive at the hospital before severe
shock or extensive tissue damage generally have better outcomes.

Can emphysematous gastritis be prevented?

Because the condition is rare, there is no specific prevention plan. However,
addressing underlying risk factors may reduce the chances of this and other
serious infections:

• Working with a healthcare professional to keep diabetes well controlled
• Limiting or avoiding heavy alcohol use and seeking help for alcohol use disorder
• Taking NSAIDs and other ulcer-promoting medications only as directed
• Promptly treating serious infections and chronic conditions such as kidney or lung disease
• Using appropriate protective measures when handling corrosive substances

Most importantly, any sudden, severe abdominal painespecially in people with
multiple health problemsdeserves prompt medical attention. Early evaluation is
the best chance to detect serious conditions while they are still treatable.

When to seek emergency care

Emphysematous gastritis is just one of many causes of severe abdominal pain, but
the red flags for emergency assessment are similar. Seek urgent medical care if
you or someone else experiences:

• Sudden, intense abdominal pain that does not improve
• Vomiting blood or material that looks like coffee grounds
• Black or tarry stools
• Fever with abdominal pain
• Fainting, confusion, or difficulty staying awake
• Very fast heartbeat or breathing, or very low blood pressure

Only a healthcare professional who can examine a person, review their health
history, and order tests can diagnose emphysematous gastritis or other emergent
conditions. This article is for general information and cannot replace medical advice.

Real-world experiences: What emphysematous gastritis can look like

Because emphysematous gastritis is so rare, most peopleand even many cliniciansmay
never encounter it in person. Case reports, however, offer a glimpse into how the
condition behaves in real life and highlight the importance of early recognition
and coordinated care. The following scenarios are based on patterns described in
the medical literature, with details simplified and generalized for educational
purposes.

Case snapshot 1: The sudden “stomach flu” that wasn’t

Imagine a person in their late 60s with long-standing diabetes and high blood
pressure who develops what feels like a nasty “stomach flu”: nausea, vomiting,
and cramping pain high in the abdomen. At first, they try to ride it out at home,
assuming it will pass with rest and clear liquids. Overnight, the pain worsens,
they begin vomiting dark material, and they feel weak and dizzy when standing.

In the emergency department, the triage team quickly notices several warning
signs: low blood pressure, rapid heart rate, and significant tenderness when
pressing on the upper abdomen. Lab tests show elevated white blood cells and
lactic acid, both signs that the body is under serious stress. A CT scan reveals
gas within the stomach wall and portal venous gasclassic for emphysematous
gastritis.

The care team springs into action: IV fluids, high-dose broad-spectrum antibiotics,
and close monitoring in the ICU. Because there is no evidence of a perforation or
widespread necrosis, they opt for aggressive conservative management. Over the next
several days, repeat imaging shows decreasing gas in the stomach wall, and the
patient gradually stabilizes. Months later, they may have some lingering digestive
sensitivity but otherwise return to daily life with a renewed respect for “stomach
pain that feels different.”

Case snapshot 2: The high-stakes surgical decision

In another scenario, a person with multiple chronic conditionsadvanced kidney
disease, heart failure, and heavy alcohol usepresents with relentless abdominal
pain, fever, and vomiting. By the time they arrive at the hospital, they are in
septic shock. The CT scan again reveals gas in the stomach wall, but this time
there are also signs of free air and fluid in the abdomen, suggesting a perforation.

Here, conservative treatment alone is unlikely to be enough. The surgical team
discusses the risks and benefits with the patient’s family: without surgery, the
infection is almost certainly fatal; with surgery, survival is still uncertain,
but there is a chance to remove the necrotic tissue and control the source of
infection. After rapid preparation, surgeons proceed with an operation, removing
the most damaged section of the stomach and thoroughly washing the abdomen.

Postoperative care is intenseventilator support, vasopressors to maintain blood
pressure, and a complex antibiotic regimen. Even in the best circumstances,
recovery is long and challenging. Some patients ultimately survive, while others
do not, highlighting why emphysematous gastritis is viewed with such seriousness
in critical care and surgical communities.

Case snapshot 3: Lessons for patients and providers

The experiences described in published reports share a few common themes:

• Early CT imaging matters. Many successful conservative treatments began with a CT scan done as soon as clinicians suspected a serious problem.
• Risk factors set the stage. Diabetes, heavy alcohol use, recent gastric surgery, or immunosuppression show up again and again in case histories.
• Multidisciplinary teams improve decision-making. Radiologists, gastroenterologists, surgeons, intensivists, and infectious-disease specialists often collaborate to decide between continued medical therapy and surgery.
• Clinical judgment remains central. There is no single lab value or imaging detail that automatically dictates the perfect treatment. Doctors constantly weigh the patient’s overall stability against the risks of waiting or operating.

For patients and families, these stories underline one practical takeaway: when
severe abdominal pain is combined with feeling extremely unwellespecially in the
setting of chronic illnessseeking immediate medical care is essential. Prompt
evaluation does not just help diagnose emphysematous gastritis; it can also catch
heart attacks, ruptured aneurysms, or other life-threatening conditions that
sometimes masquerade as “just a bad stomachache.”

While emphysematous gastritis is rare, it serves as a powerful reminder that the
stomach is more than a simple food bag. It is living tissue with a rich blood supply
and a complex relationship with the rest of the body. When infection finds its way
into that delicate system, early recognition and aggressive treatment can make the
difference between recovery and catastrophe.