Pregnancy Clinical Trial
Official title:
Rate of Gastric Emptying in Term Parturients Undergoing Elective Cesarean Section
The aim of the study is to use sequential ultrasound evaluation of the gastric volume to determine how long it takes for the stomach of a fasting pregnant woman at term, admitted for elective cesarean section, to empty after ingesting a 400ml carbohydrate drink (Nutricia preOp).
Recent research suggests that attention to nutrition before operation leads to a speedier
recovery through moderating the metabolic responses to surgery, improving well-being,
decreasing post-operative insulin resistance and attenuation loss of lean body mass. On other
hand there are fasting guidelines in place to prevent from pulmonary aspiration. The current
fasting guidelines of 2hrs for clear fluids come from some small studies performed in healthy
non-pregnant adults and consensus agreement.
The aim of the study is to use sequential ultrasound evaluation of the gastric volume to
determine how long it takes for the stomach of a fasting pregnant woman at term, admitted for
elective cesarean section, to empty after ingesting a 400ml carbohydrate drink (Nutricia
preOp - a clear, non-carbonated, lemon flavoured, carbohydrate drink that provides
0.5kcal/ml).
Patients who are fasting according to the current guidelines and agree to partake in the
study will, on the day of their elective LSCS, be given a 400ml carbohydrate drink at least
2hours before their scheduled theatre time. Patients will then have their gastric volume
assessed at 15minutes intervals for 2 hours to determine how long it takes for the ingested
fluid to leave the stomach. The results of the study will give us more information regarding
gastric emptying in the investigator's patient population and may lead to reduced fasting
times, increasing patient comfort and improving the patient experience.
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