Peritonitis is a serious and potentially life-threatening condition that occurs when the peritoneum, the thin layer of tissue lining the inside of the abdomen and covering abdominal organs, becomes inflamed. This inflammation is most commonly caused by bacterial or fungal infection, though it can also occur due to chemical irritation or injury.

Prompt diagnosis and treatment are critical, as untreated peritonitis can rapidly lead to sepsis, organ failure, and death. Understanding its symptoms, causes, and diagnostic approach can help ensure timely medical intervention.

What Is Peritonitis?

The peritoneum serves several important functions:

• Supports and protects abdominal organs

• Produces fluid that allows organs to move smoothly

• Helps fight infection

When this lining becomes inflamed, the condition is known as peritonitis. It can be localized (confined to one area) or generalized (affecting the entire abdomen), with generalized peritonitis being a medical emergency.

Types of Peritonitis

1. Primary (Spontaneous)

• Occurs without an obvious perforation or injury

• Common in patients with liver cirrhosis and ascites

• Usually caused by bacterial infection of ascitic fluid

2. Secondary

• Results from a hole or rupture in the gastrointestinal tract

• Causes include:

  • Appendicitis

  • Peptic ulcer perforation

  • Bowel obstruction

  • Diverticulitis

  • Trauma or surgery

3. Tertiary

• Persistent or recurrent infection despite treatment

• Seen in critically ill or immunocompromised patients

Causes of Peritonitis

Peritonitis can develop due to several underlying conditions:

Infectious Causes

• Bacterial infections (most common)

• Fungal infections (especially in hospitalized or immunocompromised patients)

• Tuberculous peritonitis (common in endemic regions)

Non-Infectious Causes

• Leakage of gastric acid, bile, or pancreatic enzymes

• Blood in the abdominal cavity

• Chemical irritation (e.g., during dialysis)

• Abdominal trauma or surgery

Common Medical Conditions Linked to Peritonitis

• Appendicitis

• Cirrhosis with ascites

• Perforated ulcers

• Inflammatory bowel disease

• Pancreatitis

• Peritoneal dialysis complications

Symptoms of Peritonitis

Symptoms often appear suddenly and worsen rapidly. Common signs include:

Abdominal Symptoms

• Mild to severe abdominal pain

• Tenderness or rigidity of the abdomen

• Swollen or distended abdomen

• Pain that worsens with movement or touch

Gastrointestinal Symptoms

• Nausea and vomiting

• Loss of appetite

• Temporary bowel paralysis (ileus)

• Constipation or inability to pass gas

Systemic Symptoms

• Fever and chills

• Dehydration

• Fast heart rate

• Low blood pressure

• Shortness of breath

• Fatigue and weakness

Any severe abdominal pain with fever should be treated as a medical emergency.

Risk Factors for Peritonitis

Certain individuals are at higher risk of developing peritonitis:

• Patients with liver disease or ascites

• People on peritoneal dialysis

• Immunocompromised individuals

• Recent abdominal surgery or injury

• Chronic gastrointestinal disorders

How Is Peritonitis Diagnosed?

Early and accurate diagnosis is essential for effective treatment.

Clinical Examination

Doctors assess:

• Abdominal tenderness and guarding

• Rigidity or rebound tenderness

• Vital signs indicating infection or shock

Laboratory Tests

• Complete blood count (CBC)

• C-reactive protein (CRP)

• Blood cultures

• Liver and kidney function tests

• Ascitic fluid analysis (if present)

Imaging Studies

• Ultrasound abdomen

• CT scan of the abdomen (gold standard)

• X-ray to detect free air in perforation cases

Peritoneal Fluid Analysis

• Cell count and culture

• Helps identify infection type and guide antibiotic therapy

Treatment of Peritonitis

Peritonitis is a medical emergency that requires immediate hospital care.

1. Antibiotic Therapy

• Broad-spectrum antibiotics started immediately

• Adjusted based on culture results

• Antifungal treatment if required

2. Intravenous Fluids

• Correct dehydration

• Maintain blood pressure

• Prevent shock

3. Pain Management

• Analgesics under medical supervision

4. Surgery

Required when there is:

• Perforation of bowel or stomach

• Abscess formation

• Severe secondary peritonitis

5. Supportive Care

• Oxygen therapy

• Monitoring in ICU for severe cases

• Nutritional support

Complications of Peritonitis

Without timely treatment, peritonitis can lead to:

• Sepsis

• Septic shock

• Multi-organ failure

• Intra-abdominal abscess

• Adhesions and bowel obstruction

• Death

Peritonitis and Peritoneal Dialysis

Patients on peritoneal dialysis are at increased risk due to catheter-related infections.

Warning Signs in Dialysis Patients

• Cloudy dialysis fluid

• Abdominal pain

• Fever

• Nausea

Strict hygiene and proper catheter care are essential to prevent infection.

Prevention of Peritonitis

Preventive measures depend on underlying risk factors:

• Early treatment of abdominal infections

• Proper surgical care and sterile techniques

• Good hygiene in peritoneal dialysis

• Regular monitoring in liver disease patients

• Timely medical attention for abdominal pain

When to See a Doctor

Seek immediate medical help if you experience:

• Severe or persistent abdominal pain

• Fever with abdominal tenderness

• Vomiting and abdominal swelling

• Rapid heartbeat or difficulty breathing

Early diagnosis can be life-saving.

Role of Diagnostic Centres in Managing Peritonitis

Accurate and timely diagnosis plays a crucial role in improving outcomes. Advanced diagnostic facilities help in:

• Early detection of infection

• Identifying underlying causes

• Monitoring treatment response

• Preventing complications

Frequently Asked Questions (FAQ)

1. Is it life-threatening?

Yes. Peritonitis is a medical emergency that can be fatal if not treated promptly.

2. Can it be cured?

Yes, with early diagnosis and appropriate treatment, most cases can be successfully treated.

3. How long does recovery take?

Recovery depends on severity and cause. Mild cases may recover in days, while severe cases may take weeks.

4. Can it recur?

Yes, especially in patients with chronic conditions like liver disease or those on peritoneal dialysis.

5. Is surgery always required?

No. Some cases respond well to antibiotics alone. Surgery is needed if there is perforation or abscess.

6. What tests confirm it?

Blood tests, imaging (CT scan), and peritoneal fluid analysis help confirm the diagnosis.

7. Can it be prevented?

Many cases can be prevented through early treatment of abdominal infections and proper medical care.

8. Is it contagious?

No. It is not contagious but results from internal infection or injury.

Peritonitis is a serious condition requiring immediate medical attention. Recognizing symptoms early, understanding risk factors, and seeking timely diagnosis can significantly reduce complications and save lives. With proper medical care, advanced diagnostics, and prompt treatment, recovery is possible.

If you or a loved one experiences symptoms suggestive of peritonitis, do not delay—seek medical help immediately.

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