An Army veteran screamed "Stop! Stop! You're killing me!" as a nurse allegedly gave him a deadly shot of adrenaline, a former hospital worker testified Tuesday at the nurse's murder trial. Stanley Jagodowski, 65, is one of four men allegedly killed at the VA Medical Center in Northampton by Kristen Gilbert, 33, of Setauket, N.Y. She also is accused of trying to kill three others. The dramatic account came from retired nurse Beverly Scott, who said she saw Gilbert enter Jagodowski's room with a syringe the day he died. "She hadn't been in the room very long when I heard Mr. Jagodowski yell "Stop! Stop! You're killing me!' " she testified. She acknowledged that Jagodowski complained chronically and loudly, and that he said he was fine after Gilbert left the room. However, she said, he required emergency heart care 15 minutes later. Defense lawyers say the deaths were natural. Prosecutors say they were shrewdly disguised poisonings. Adrenaline is usually used to restore a normal beat to a stalled heart, but when used incorrectly can make the heart race. Earlier, Jagodowski's daughter testified that her father, who had a leg amputated because of diabetes complications, suddenly took a turn for the worse on Aug. 22, 1995. Susan Lessard said her father lay "completely unconscious, completely helpless, making a lot of sounds from his mouth. I just went over and wanted to hold him to pull him from the state he was in." Prosecutors say Gilbert provoked medical emergencies to attract attention. The case grew out of an unusual series of deaths in 1995 and 1996 and the suspicions they aroused among some staffers. Gilbert could face the federal death penalty if convicted; the case is in federal court because the alleged crimes took place on federal property. Massachusetts banned the death penalty in state murder trials in 1984. The trial could last months.