Nasogastric Enteral Feeding In one study of seven patients with hyperemesis, the placement of a Dobhoff tube improved symptoms of nausea and vomiting in 24 hours, and symptoms continued to improve with enteral feedings. The mean hospitalization after feedings began was 4.6 days, with the longest being 8 days. On discharge, one woman did not require enteral feedings, and the other six continued feedings in the outpatient setting. The average duration of feedings was 43 days, ranging from 5 to 174 days. One patient was content with the enteral feedings and continued them for 174 days; however, the second longest duration was only 49 days.21