PMID- 20230209 OWN - NLM STAT- MEDLINE DCOM- 20100730 LR - 20131121 IS - 1473-4877 (Electronic) IS - 0300-7995 (Linking) VI - 26 IP - 5 DP - 2010 May TI - Intravenous esomeprazole pharmacodynamics in critically ill patients. PG - 1141-8 LID - 10.1185/03007991003694308 [doi] AB - OBJECTIVE: A widely held belief contends that food-induced proton pump activation is important for optimal proton pump inhibitor-induced inhibition of gastric acid secretion. This study was undertaken to assess intragastric acid control with intravenous (IV) esomeprazole in critically ill patients. RESEARCH DESIGN AND METHODS: This open-label, single-arm, exploratory trial was conducted at five university or regional hospital intensive care units in the US. Adult patients admitted to an intensive care unit who required mechanical ventilation and had at least one additional risk factor for stress-induced ulcer received twice-daily IV esomeprazole 40 mg for 48 hours and could continue for another 24 hours if no prepyloric enteral feedings were planned. CLINICAL TRIAL REGISTRATION: D9612L00107; ClinicalTrials.gov Identifier NCT00428701. MAIN OUTCOME MEASURES: The primary efficacy variable was the linear-interpolated percentage of time intragastric pH was > or =4 during 24-48 hours. Secondary efficacy variables included the interpolated percentage of time intragastric pH was > or =4 during 0-24, 0-48, and 48-72 hours, the percentage of gastric aspirates collected with pH > or =4 during 0-24, 24-48, 0-48, and 48-72 hours, and time to stable pH > or =4. Safety was assessed based on adverse events (AEs), physical examinations, vital signs, laboratory tests, and electrocardiograms. RESULTS: Forty-five patients were enrolled (one was excluded because of previous partial gastrectomy). Interpolated mean percentage time pH > or =4 was 88.8%, 80.7%, and 83.5% for 24-48, 0-24, and 0-48 hours, respectively. For 0-72 hours, > or =78% of gastric aspirates had pH > or =4. Median time to stable pH was 1 hour (95% confidence interval: 0.67, 2.00). Treatment was well tolerated, with no evidence of gastrointestinal bleeding. A total of 75 AEs occurred in 34 patients, none considered treatment related. CONCLUSIONS: In this noncontrolled exploratory study, twice-daily IV esomeprazole 40 mg rapidly decreased intragastric acidity and effectively maintained pH >/=4 during 0-72 hours in fasting, critically ill, mechanically ventilated patients at high risk for stress ulcers. FAU - Metz, David C AU - Metz DC AD - Division of Gastroenterology, University of Pennsylvania, Philadelphia, PA 19104, USA. david.metz@uphs.upenn.edu FAU - Fulda, Gerard J AU - Fulda GJ FAU - Olsen, Keith M AU - Olsen KM FAU - Monyak, John T AU - Monyak JT FAU - Simonson, Steven G AU - Simonson SG FAU - Sostek, M B AU - Sostek MB LA - eng SI - ClinicalTrials.gov/NCT00428701 PT - Clinical Trial PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't PL - England TA - Curr Med Res Opin JT - Current medical research and opinion JID - 0351014 RN - 0 (Anti-Ulcer Agents) RN - N3PA6559FT (Esomeprazole) SB - IM MH - Adult MH - Anti-Ulcer Agents/*administration & dosage/pharmacology MH - *Critical Illness MH - Esomeprazole/*administration & dosage/pharmacology MH - Humans MH - Treatment Outcome EDAT- 2010/03/17 06:00 MHDA- 2010/07/31 06:00 CRDT- 2010/03/17 06:00 PHST- 2010/03/17 06:00 [entrez] PHST- 2010/03/17 06:00 [pubmed] PHST- 2010/07/31 06:00 [medline] AID - 10.1185/03007991003694308 [doi] PST - ppublish SO - Curr Med Res Opin. 2010 May;26(5):1141-8. doi: 10.1185/03007991003694308.