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Pharmacologic influence on esophageal varices: a preliminary report
Cardiovascular and Interventional Radiology
|January 1, 1983
Summary
Drugs that increase lower esophageal sphincter (LES) pressure may reduce blood flow in esophageal varices. Pentagastrin and domperidone showed potential in obstructing variceal blood flow, suggesting a possible therapeutic approach.
Area of Science:
- Gastroenterology
- Interventional Radiology
Background:
- Portal hypertension commonly leads to esophageal varices.
- Managing variceal bleeding is critical in patients with portal hypertension.
Purpose of the Study:
- To investigate the effect of drugs that increase lower esophageal sphincter (LES) pressure on variceal blood flow.
- To explore potential therapeutic strategies for controlling variceal bleeding.
Main Methods:
- Selective catheterization of the left gastric vein after percutaneous transhepatic portography (PTP).
- Administration of various drugs (vasopressin, pentagastrin, domperidone, somatostatin, metacholine) to assess impact on variceal blood flow.
- Measurement of LES pressure before and during vasopressin infusion.
Main Results:
- Pentagastrin interrupted variceal blood flow in 4 out of 8 patients.
- Domperidone obstructed flow in the single patient examined.
- Somatostatin blocked flow in 1 out of 2 patients; vasopressin and metacholine showed no significant effect on flow.
- Vasopressin did not alter LES pressure.
Conclusions:
- Drugs that increase LES tonus may be beneficial in controlling variceal blood flow.
- Further research with larger patient cohorts is warranted due to small sample sizes and nonuniform results.