Fifty-two patients with Forrest Ia or Ib bleeding ulcers were randomiz
ed to receive endoscopic injection therapy with either 1:10 000 epinep
hrine in water (Group I) or distilled water (Group II). Twenty-five ou
t of 27 patients in group I, versus 22 out of 25 patients in group II,
achieved initial hemostasis after endoscopic injection therapy (p > 0
.05). Five patients who did not respond to local injection had bleedin
g controlled by heater probe thermocoagulation or surgical interventio
n. Three patients in each group developed rebleeding after initial hem
ostasis. Four of these patients had bleeding controlled by surgical in
tervention, while the other two died of underlying diseases. No change
in systemic blood pressure, but a significant drop in the pulse rate
were noted in both groups after injection therapy. Patients with shock
at admission or ulcer size greater than 2 cm had a significantly high
er rebleeding rate after initial hemostasis than patients with normal
blood pressure and ulcers under 2 cm (p < 0.05). No serious complicati
ons were observed after injection therapy, and no significant differen
ce in the amounts of solution required for successful hemostasis was n
oted between the two groups. We conclude that a local tamponade with d
istilled water is as effective and safe as diluted epinephrine solutio
n for endoscopic injection therapy.