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When did the abdominal enlargement begin?
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Has the abdomen become larger quickly or gradually?
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Has body weight changed?
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Is there pain or discomfort?
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Are the legs or ankles swollen?
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Has there been any change in urine or stool color?
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Is there a history of alcohol use?
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Does the person have diabetes, obesity, or viral hepatitis?
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Are any medications or supplements being used?
During the examination, the doctor may look for signs of jaundice, leg edema, muscle wasting, abdominal tenderness, and other abnormalities.
If ascites is suspected, specific physical examination techniques may help identify fluid, although imaging is often more reliable.
2. Abdominal ultrasound
Ultrasound is commonly used to evaluate the liver and abdominal organs.
It can help identify:
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Fluid accumulation in the abdominal cavity.
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Liver size and general appearance.
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Changes associated with cirrhosis.
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Enlarged spleen.
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Certain masses or structural abnormalities.
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Signs that may suggest portal hypertension.
Ultrasound is noninvasive and does not use ionizing radiation.
However, an ultrasound alone cannot always determine the exact cause of liver disease or establish the severity of every type of liver injury.
Additional tests may be needed.
3. Blood tests
Blood tests help assess liver function, liver injury, clotting, and other aspects of health.
Common tests include:
ALT and AST: These enzymes can rise when liver cells are injured. However, normal levels do not completely rule out advanced liver disease.
Bilirubin: Elevated levels may contribute to jaundice.
Albumin: Low levels may occur when the liver's ability to produce proteins is impaired, although other conditions can also lower albumin.
Prothrombin time and INR: These tests help assess blood clotting and may provide information about liver synthetic function. They must be interpreted carefully, particularly in people taking anticoagulant medications.
Platelet count: A low platelet count can occur in advanced liver disease, sometimes because of portal hypertension and spleen enlargement.
Creatinine and electrolytes: These help assess kidney function and fluid balance.
Doctors may also request tests for hepatitis B and C, autoimmune liver disease, iron overload, or other possible causes.
4. Elastography
Liver elastography is a test that estimates liver stiffness.
It can help identify significant fibrosis and assess the risk of advanced chronic liver disease.
Transient elastography, sometimes known by the brand name FibroScan, uses specialized ultrasound technology to measure liver stiffness and, in some systems, estimate liver fat.
It is not a direct measurement of every type of liver damage, and results may be influenced by factors such as inflammation or congestion.
5. Diagnostic paracentesis
When someone develops new ascites, doctors commonly consider diagnostic paracentesis.
This procedure involves inserting a thin needle or catheter through the abdominal wall to collect a small amount of fluid for testing.
The fluid may be analyzed for:
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White blood cell count.
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Albumin concentration.
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Total protein.
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Bacterial infection.
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Other tests depending on the suspected cause.
One important measurement is the serum-ascites albumin gradient (SAAG), which compares albumin levels in the blood and ascitic fluid.
A SAAG of at least 1.1 g/dL generally suggests portal hypertension is contributing to the ascites.
Additional testing helps determine whether the cause is cirrhosis, heart disease, cancer, infection, or another condition.
Paracentesis is especially important when infection is suspected or when someone with cirrhosis is hospitalized with ascites.
Chapter 7: What Happens If Liver-Related Ascites Is Left Untreated?
Ascites is not simply a cosmetic problem.
It can indicate significant changes in circulation and liver function. When it becomes severe or is not properly managed, it may lead to several complications.
1. Increasing abdominal pressure
As fluid accumulates, pressure inside the abdomen increases.
This can make it uncomfortable to sit, bend, walk, or sleep.
Some people experience early fullness because the enlarged abdomen places pressure on the stomach.
They may feel full after eating only a small amount of food, making it difficult to consume enough calories and protein.
Over time, inadequate nutrition can contribute to muscle wasting and weakness.
2. Difficulty breathing
Severe ascites can push upward against the diaphragm, the muscle that helps the lungs expand during breathing.
This may cause shortness of breath, especially when lying flat or performing physical activities.
Breathing difficulty can also result from heart or lung complications, so it should not automatically be attributed to abdominal fluid.
Severe or sudden breathing difficulty requires urgent medical care.
3. Spontaneous bacterial peritonitis
One potentially dangerous complication is spontaneous bacterial peritonitis (SBP).
This is an infection of the ascitic fluid that can occur in people with cirrhosis and ascites.
Symptoms may include fever, abdominal pain, tenderness, worsening abdominal swelling, nausea, vomiting, confusion, or a general decline in health.
However, some patients, particularly those with advanced liver disease, may have few obvious symptoms.
SBP is a medical emergency because it can lead to sepsis, kidney injury, and other serious complications.
Prompt medical assessment and treatment with antibiotics are essential.
4. Kidney complications
Advanced cirrhosis can affect blood circulation throughout the body, including the kidneys.
In some cases, severe changes in circulation lead to hepatorenal syndrome, a serious form of kidney dysfunction associated with advanced liver disease.
People may experience reduced urine output, worsening fluid retention, and rising creatinine levels.
This condition requires specialist medical care.
5. Malnutrition and muscle loss
People with advanced liver disease may struggle to maintain adequate nutrition.
Poor appetite, nausea, early fullness, altered metabolism, and dietary restrictions can all contribute.
Muscle loss can become particularly severe, even when the abdomen remains enlarged.
This is why doctors often assess nutritional status and muscle function rather than relying only on body weight.
Chapter 8: How Is Ascites Treated?
Treatment depends on the underlying cause, the severity of fluid accumulation, and the patient's overall medical condition.
If ascites is caused by cirrhosis, treatment generally focuses on controlling fluid retention, reducing complications, and managing the liver disease itself.
There is no single treatment that is appropriate for everyone.
1. Reduce sodium intake
For many people with cirrhosis-related ascites, reducing sodium intake is an important part of treatment.
Sodium encourages the body to retain water, so excessive dietary sodium can make fluid accumulation more difficult to control.
Doctors or dietitians may recommend a moderate sodium restriction, often around 2,000 mg per day, depending on the patient's condition and local clinical guidance.
Common sources of excess sodium include:
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Processed meats.
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Canned soups.
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Instant noodles.
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Salted snacks.
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Packaged sauces.
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Fast food.
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Pickled foods.
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Restaurant meals with heavy seasoning.
However, overly restrictive diets can make it harder for people with liver disease to obtain enough calories and protein.
A personalized nutrition plan is preferable to simply eliminating large numbers of foods.
2. Diuretic medications
Doctors may prescribe diuretics, which help the kidneys remove excess sodium and water.
Common medications used for cirrhosis-related ascites include spironolactone and, in some cases, furosemide.
These medications require monitoring because they can affect kidney function, sodium, potassium, and blood pressure.
Patients should never start diuretics, change doses, or use someone else's medication without medical supervision.
3. Therapeutic paracentesis
When ascites becomes large or uncomfortable, doctors may perform therapeutic paracentesis.
This procedure removes excess fluid from the abdomen using a needle or catheter.
It can relieve pressure, improve comfort, and sometimes make breathing easier.
When large volumes of fluid are removed, intravenous albumin is often given to reduce the risk of circulatory dysfunction.