Gastric pH and volume after oral fluids in the postpartum patient

Effects of fasting and oral premedication on the pH and volume of gastric aspirate in children.

The pH and volume of gastric aspirate were measured immediately after the induction of anaesthesia in 224 healthy children to determine the effects of decreasing the period of fasting and of giving oral premedicants before anaesthesia. Fasting for less than 4 h was found to increase the volume of gastric aspirate and the risk of developing pulmonary aspiration syndrome. Trimeprazine syrup was f...

The effect of preoperative oral fluid and ranitidine on gastric fluid volume and pH.

One hundred unpremedicated daycare patients were randomly assigned to one of four groups. Between two and three hours preoperatively all patients received either oral ranitidine 150 mg, or placebo, with bromosulphthalein (BSP) 50 mg in 10 ml water, immediately followed by either 150 ml water or no further fluid. The residual gastric volume (RGV) in the two placebo groups was significantly lower...

Effects of oral nizatidine on preoperative gastric fluid pH and volume in children.

We have studied the effect of oral nizatidine 6 mg kg-1 in total on preoperative gastric fluid pH and volume in children. One hundred and four healthy children, aged 4-11 yr, were allocated randomly to four groups (n = 26): placebo administered at 21:00 and 06:30 the night before and on the day of surgery, respectively (placebo-placebo: control); nizatidine 6 mg kg-1 at 21:00 and placebo at 06:...

Comparison of oral and intramuscular lorazepam as a surgical premedicant on gastric pH and volume.

The effect of oral Bicitra compared with intramuscular cimetidine on gastric volume and pH in outpatient surgery.