Wed3November0832PM 7

Is it true or false that obstetric patients are at increased risk of regurgitation because of the following?

True / False

The gravid uterus increases intra-abdominal pressure Correct

Progesterone induces relaxation of lower oesophageal sphincter Correct

Labour slows gastric emptying Correct

Prolonged starvation delays gastric emptying Incorrect answer selected

The Y chromosome is known to delay gastric emptying Correct

Explanation

Reduced tone of the lower oesophageal sphincter coupled with increased intra-abdominal pressure due to gravid uterus increases risk of regurgitation in an obstetrics patient.

The pain of labour delays gastric emptying. This may be aggravated if pethidine is given for labour analgesia.

Reference:

Gwinnutt C. Lecture Notes: Clinical Anaesthesia. 3rd ed. Oxford: Wiley-Blackwell; 2008.

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Average score: 91.32%

Times answered: 258