Cirrhosis - Bleeding Episodes
Preventing Complications. The patients who is experiencing a bleeding episode is at high risk for other complications including pneumonia, bacterial infections, and hepatic encephalopathy. Bacterial infections can also impair blood clotting. Preventive oral antibiotics are often problematic in these patients. One study suggested that intravenous ciprofloxacin may be helpful. Drugs Used for Prevention of BleedingBeta-Blockers. Beta-blockers, typically propranolol (Inderal) or nadolol (Corgard), reduce the heart rate and can lower portal vein pressure in many patients and so reduce variceal bleeding. Carvedilol (Coreg), a newer agent may be even more effective, but more research is needed. Beta-blockers are also used as a primary approach for prevention of recurring bleeding. Nevertheless they fail to reduce portal pressure in nearly 40% of patients with cirrhosis. They may not be appropriate for patients with type 1 diabetes, asthma, emphysema, and chronic bronchitis. They must be taken for at least two years and most likely longer to sustain a survival advantage. Other Agents. Other agents are being used or investigated, mostly in combination with beta-blockers, to reduce recurrence rates. - Isosorbide mononitrate is a nitrate, a type of drug commonly used for angina. Combinations with beta-blockers suggest appear to prevent rebleeding more effectively than beta-blockers alone. It is not clear if the combination improves any other aspects of the disease. (One study suggested that taking a low dose of before a meal might help reduce a rise in portal pressure that typically occurs after eating.) The nitrate has also been given as the alternative agent for patients who cannot tolerate beta-blockers. Studies have failed to show any survival advantage with isosorbide mononitrate when used alone, however.
- The diuretic spironolactone may be helpful in combination with a beta-blocker for reducing both ascites and rebleeding after an initial episode.
- Angiotensin II receptor antagonists, including losartan (Cozaar), are being studied for lowering portal pressure.
Drugs Used to Treat Bleeding EpisodesSomatostatinand Similar Agents. Somatostatin is a natural hormone that constricts blood vessels. This agent or synthetic derivatives (octreotide and vapreotide) may be more effective than the common procedure, endoscopic sclerotherapy, for controlling bleeding. No single agent is more effective than another. Their benefits for improving overall survival, however, are still uncertain, and a major 2002 analysis of current studies found no effects on survival rates with either octreotide or somatostatin. - Somatostatin, the natural hormone, controlled variceal bleeding in 87% of patients in one 2000 study, but it is short acting.
- Octreotide (Sandostatin) is a derivative of somatostatin and is longer acting. It has largely replaced the older agent. It is very safe, even for heart patients, and has few serious side effects.
- Vapreotide (Octastatin) also resembles somatostatin. A 2001 study concluded that a combination of vapreotide and endoscopic treatment is more effective than endoscopic treatment alone for controlling bleeding, but the combination therapy did not improve mortality rates at 42 days. The study suggested that these drugs should be taken for five days.
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