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There is nothing to shake up an OR schedule rather than a patient who ate two hours before

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their scheduled operation.

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But is the risk of aspiration real?

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How long do patients really need to fast before an operation?

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Lucky for us, Dr. Mary Edwards brings us up to speed on the latest data-driven recommendations.

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You are called at midnight from a community hospital with a level 2 NICU regarding your

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patient who is a 28-week preemie who is scheduled for a hernia repair at 7 in the morning.

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He's otherwise well and he's actually ready to go home.

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But the NICU has attempted to get an IV in him 10 times without success and they've had

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it and the kid has had it.

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They call you and they want to know what to do.

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You might say you should transfer that patient, but again, I think the evidence I know our

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anesthesiologists allow Pedialyte up to even an hour or two hours before the procedure.

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So there's no reason you can't continue with oral hydration with a baby like this prior

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to surgery.

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This subject is evolving and it is amazing to me how variable practices are around the

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world.

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I can briefly say NPO guidelines for children are in general based on very poor evidence.

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And if you do even a Google search, you'll find that from institution to institution,

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they vary a lot.

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The outcomes following aspiration can be severe, but it's a relatively rare event in elective

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surgery populations.

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High risk patients are really those that are coming in for emergency procedures.

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And the other thing is studies suggest that clear liquids containing carbohydrates empty

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the stomach very quickly.

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And that really doesn't vary based on age.

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One of the more recent consensus statements came out of Britain and Ireland, and they

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essentially recommend one hour of NPO for clear liquids, four hours for breast milk

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and six hours for solid foods and children under 17 years old.

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In the United States, the American Society of Anesthesiologists is updating their policy

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or their consensus statement on NPO guidelines.

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Currently, what they recommend is two hours for clear liquids, four hours for breast milk,

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six hours for non-human milk and light meals and eight hours for a heavy meal.

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The European Society of Anesthesia and Intensive Care is even more liberal than that.

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They recommend only one hour of NPO for clear liquids, three hours for breast milk, four

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hours for formula and six hours for all of their intake.

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These guidelines are those that are widely accepted in Australia and New Zealand as well.

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So things are moving in the direction of being more liberal.

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But I can tell you one thing about all these consensus statements is that there's now language

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in there that essentially says you need to make every effort not to keep these children

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NPO for long periods of time prior to surgery.

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It's bad.

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It generates ketone bodies, causes hypoglycemia, makes them just very irritable in the preop area.

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It's interesting.

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It's kind of aggravating that everyone does it different because it's confusing.

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But on the other hand, now maybe we can look at the differences and study that and see

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who does it better.

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Thanks for joining Dr. Edwards along with the rest of the ABSA Professional Development

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Committee for this update course rewind.

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And remember to check out the Stay Current app for more content related to pediatric

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surgery and more.

