Why do patients in the decompensated stage of liver dysfunction experience abdominal distension?

Generally, abdominal distension in patients during the decompensation stage of liver dysfunction may be caused by the formation of ascites, congestion and edema of the gastrointestinal tract, impaired bile secretion and excretion, intestinal flora imbalance, and weakened gastrointestinal motility. Patients should seek timely treatment at a regular hospital. Specific analyses are as follows:

1. Ascites Formation

During the decompensation stage of liver function, the liver's ability to synthesize albumin declines, leading to reduced albumin concentration in the blood and a subsequent decrease in plasma colloid osmotic pressure. As a result, fluid within the blood vessels more easily leaks out and accumulates in the abdominal cavity, forming ascites. As the volume of ascites increases, the pressure within the abdominal cavity rises, causing patients to feel significant abdominal distension and discomfort.

2. Gastrointestinal Congestion and Edema

Liver dysfunction during the decompensation stage can lead to portal hypertension, which impedes venous blood return in the portal venous system, resulting in blood stasis in the gastrointestinal tract. The mucosal and submucosal tissues of the gastrointestinal tract become edematous due to congestion, impairing normal digestive and absorptive functions. Additionally, gastrointestinal congestion may damage the mucosal barrier, increasing the risk of bacterial and toxin translocation from the intestine, further exacerbating gastrointestinal dysfunction.

3. Intestinal Flora Imbalance

In patients during the decompensation stage of liver dysfunction, reduced detoxification capacity of the liver, along with gastrointestinal congestion and weakened mucosal barrier function, can easily lead to intestinal flora imbalance. The number of beneficial bacteria decreases while harmful bacteria proliferate excessively. In particular, an increase in gas-producing bacteria leads to excessive gas production during food fermentation in the intestines. Accumulation of this gas in the intestinal tract without timely expulsion can cause abdominal distension and increased bowel sounds.

4. Impaired Bile Secretion and Excretion

During the decompensation stage of liver dysfunction, damage to hepatocytes or obstruction of the bile duct system due to fibrosis and inflammation can lead to reduced bile secretion or impaired bile excretion. Additionally, bile excretion disorders may cause bile stasis within the liver, further aggravating liver damage and creating a vicious cycle.

5. Weakened Gastrointestinal Motility

Patients in the decompensation stage of liver dysfunction often suffer from poor overall nutritional status and electrolyte imbalances, which can affect the contractile function of gastrointestinal smooth muscles, leading to reduced gastrointestinal motility. Slowed gastrointestinal motility prolongs gastric and intestinal emptying times. The longer food remains in the stomach and intestines, the more likely it is to ferment and produce gas in the intestines, while also impeding gas expulsion, thereby worsening abdominal distension.

Patients with decompensated liver function can take medications such as furosemide tablets, spironolactone tablets, and entecavir tablets as directed by a physician. During treatment, maintaining good lifestyle habits and avoiding excessive fatigue and emotional fluctuations can help improve treatment outcomes and quality of life.