Ascites, the buildup of fluid in the abdomen, is most often reduced through a combination of sodium restriction, diuretic medications, and in more severe cases, direct fluid drainage. The approach depends on how much fluid has accumulated and how well the liver is functioning. Most people with cirrhosis-related ascites respond to first-line treatments, but a subset develop what’s called refractory ascites, which requires more aggressive intervention.
Why Fluid Builds Up in the First Place
Understanding the mechanism helps explain why treatment targets specific things. In cirrhosis, scar tissue in the liver increases pressure in the portal vein, the major blood vessel that carries blood from the intestines to the liver. This elevated pressure, called portal hypertension, causes blood vessels in the abdomen to dilate. Your body interprets that dilation as low blood volume, even though total fluid in the body is actually increasing.
In response, the kidneys activate a hormonal cascade (the renin-angiotensin-aldosterone system) that tells the body to hold on to sodium and water. Aldosterone, the key hormone in this process, drives the kidneys to retain salt aggressively. The extra fluid has nowhere productive to go, so it weeps out of blood vessels and lymph channels into the abdominal cavity. This is why reducing sodium intake and blocking aldosterone with medication are the two cornerstones of treatment.
Sodium Restriction
Limiting salt is the single most important dietary change for reducing ascites. Clinical guidelines recommend keeping sodium intake to roughly 2,000 mg per day (about 5 grams of table salt). That’s less than most people consume without paying attention, so it requires active label reading and cooking adjustments.
Practical steps that make a real difference: avoid processed meats, canned soups, soy sauce, fast food, and most restaurant meals. Season food with herbs, citrus, vinegar, or salt-free spice blends instead. Bread, cheese, and condiments are often surprisingly high in sodium, so check labels on those specifically. Many people find the first two weeks difficult, but taste buds adjust. Keeping a food diary or using an app that tracks sodium can help you stay within range.
Fluid restriction is not routinely necessary for everyone with ascites. It typically becomes important only when blood sodium levels drop below a certain threshold (around 125 mmol/L), a condition called dilutional hyponatremia. If your care team hasn’t mentioned restricting fluids, sodium is the priority.
Diuretic Medications
When sodium restriction alone isn’t enough, diuretics (water pills) are the standard next step. The two drugs used together are spironolactone and furosemide, typically started at a ratio of 100 mg of spironolactone to 40 mg of furosemide daily. This specific combination works well because spironolactone blocks aldosterone (the hormone driving salt retention) while furosemide flushes excess sodium through the kidneys. Used together, they also help keep potassium levels balanced, since spironolactone raises potassium and furosemide lowers it.
If ascites doesn’t improve, doses can be increased in the same ratio, up to 400 mg of spironolactone and 160 mg of furosemide. But nearly half of patients on diuretics experience side effects that require lowering the dose or stopping the medication altogether. Common problems include kidney function changes, electrolyte imbalances, muscle cramps, and breast tenderness from spironolactone. Regular blood work is essential while on these medications.
Monitoring Progress at Home
Daily weigh-ins are one of the most useful tools for tracking whether treatment is working. Weigh yourself at the same time each morning, after urinating and before eating. A safe rate of fluid loss is generally about 0.5 kg (roughly 1 pound) per day if you only have ascites, or up to 1 kg per day if you also have visible leg swelling (peripheral edema). Losing weight faster than this can strain the kidneys.
Keep a log of your daily weight and bring it to appointments. A sudden gain of 2 or more pounds in a day or two often signals fluid reaccumulation and may mean the diuretic dose needs adjustment or sodium has crept back up. Also watch for increasing abdominal girth, new ankle swelling, or shortness of breath when lying flat.
Paracentesis: Direct Fluid Removal
When the abdomen is tense with fluid and diuretics haven’t provided enough relief, a procedure called paracentesis can drain the fluid directly. A needle is inserted through the abdominal wall under local anesthesia, and fluid is drained into collection bottles. The procedure typically takes 30 to 90 minutes depending on how much fluid is removed, and most people feel noticeably better almost immediately as pressure on the diaphragm and stomach decreases.
For large-volume paracentesis, where 5 liters or more is removed in a single session, an albumin infusion is given through an IV during or after the procedure. The standard is 6 to 8 grams of albumin for every liter of fluid drained. This prevents a drop in blood pressure and a cascade of circulatory problems that can follow the sudden shift in abdominal fluid. Smaller-volume taps generally don’t require albumin replacement.
Paracentesis is safe and repeatable, but needing it frequently (every two weeks or more) is a sign that ascites has become refractory to medical therapy.
Refractory Ascites
Ascites is considered refractory when it either doesn’t respond to maximum doses of diuretics plus sodium restriction, or when side effects make it impossible to continue diuretic therapy. This happens in a meaningful minority of people with cirrhosis and marks a shift toward more intensive management.
Options at this stage include regular scheduled paracentesis (often every two to four weeks) and, in select cases, a TIPS procedure. TIPS stands for transjugular intrahepatic portosystemic shunt. It’s a small channel placed inside the liver that redirects blood flow to reduce portal pressure directly. By lowering the pressure driving fluid into the abdomen, TIPS can significantly reduce or eliminate ascites. It carries risks, though, including worsening of hepatic encephalopathy (confusion caused by toxins the liver can’t clear), so it’s not appropriate for everyone.
When Transplant Becomes Part of the Conversation
The development of ascites is itself a turning point in liver disease. It signals that cirrhosis has progressed to a decompensated stage, and it’s one of the reasons doctors begin evaluating whether a liver transplant might eventually be needed. Transplant priority is determined by the MELD-Na score, which combines measures of kidney function, clotting ability, bilirubin, and blood sodium levels into a single number. Sodium was added to the scoring system in 2016 after research showed that each 1 mmol/L drop in sodium between 125 and 140 increased mortality risk by about 5%.
Hyponatremia is particularly common in people with ascites and tends to worsen during infections or bleeding episodes. If your sodium levels are trending downward despite treatment, that’s factored into your transplant score. Ascites itself doesn’t directly change the score, but the complications it reflects (worsening liver and kidney function, dropping sodium) do.
Avoiding Common Setbacks
Alcohol, even in small amounts, accelerates liver damage and makes ascites harder to control. Complete abstinence is critical. Nonsteroidal anti-inflammatory drugs (like ibuprofen and naproxen) should be avoided entirely because they reduce blood flow to the kidneys and counteract diuretics. Acetaminophen at low doses is generally the safer option for pain, but confirm this with your care team given your liver function.
Infections are another major risk. Fluid in the abdomen can spontaneously become infected, a condition called spontaneous bacterial peritonitis, even without an obvious source. Signs include fever, worsening abdominal pain, confusion, or a general feeling of being unwell. This is a medical emergency. Anyone hospitalized with ascites will typically have a sample of abdominal fluid tested for infection as a matter of routine. Some people with a history of this infection take a daily antibiotic to prevent recurrence.
Staying on top of sodium, taking diuretics consistently, showing up for blood work, and tracking your weight daily are the actions that make the most difference in keeping ascites manageable between appointments.