Key result
Allowing free clear fluids until oral premedication did not affect mean residual gastric volume (22 ml vs 19 ml) or pH (2.64 vs 2.26) compared to 6-hour fasting in elective surgical patients.
Why the study?
Does allowing free clear fluids until oral premedication affect residual gastric volume and pH in elective surgical patients?
Population
100 elective surgical patients
Comparison
Free clear fluids until the time of oral… vs Conventional preoperative fasting for 6 h
Design
RCT, allocated randomly
Follow-up
after induction of anaesthesia
Authors
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Supports liberal clear fluids until premedication to ease thirst; confirms safety of shortened fasting in elective surgery.
RCT (n=100)
randomized
Does allowing free clear fluids until oral premedication affect residual gastric volume and pH in elective surgical patients?
Absolute Event Rate: 22% vs 19%
Allowing elective surgical patients to drink clear fluids until oral premedication does not increase residual gastric volume or acidity, and reduces preoperative thirst.
Phillips et al. (1994) conducted an RCT in Elective surgery (n=100). Free clear fluids until oral premedication vs. Fasted for 6 h was evaluated on Residual volume of gastric contents after induction of anaesthesia (ml). Allowing free clear fluids until oral premedication did not affect mean residual gastric volume (22 ml vs 19 ml) or pH (2.64 vs 2.26) compared to 6-hour fasting in elective surgical patients.
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