[A study of portal blood flow changes in patients with early dumping syndrome and patients with oxyhyperglycemia].

Changes of portal blood flow in patients with early dumping syndrome and those with oxyhyperglycemia were determined after oral ingestion of 300ml of 25% glucose solution by a linear-type B mode electroscanner and pulsed Doppler flowmeter. In normal volunteers, the portal blood flow increased slowly to the peak level of 201% of fasting value at 40 minutes. The portal blood flow in postgastrectomy patients reached the peak value more quickly, with the peak level of 245% at 10 minutes in patients with the early dumping syndrome, and of 172% at 15 minutes in patients without the syndrome. The portal blood flow in patients with early dumping syndrome was significantly greater than that without the syndrome. Patients with early dumping syndrome had characteristic symptoms such as general malaise, cold sweat, nausea, abdominal pain, diarrhea in accordance with increased portal blood flow. Patients with high grade oxyhyperglycemia (peak blood sugar after 75g OGTT greater than 250mg/dl) had significantly higher portal blood flow and peripheral blood sugar than those with low grade oxyhyperglycemia (peak blood sugar less than 250mg/dl) without difference in IRI between the two groups.