Can silent aspiration during general anaesthesia cause bronchopneumonia and mortality?

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Answers:
It's possible, I guess. If the endotracheal tube is correctly placed, there should be no opportunity for aspiration. The only thing I can think of would be if the balloon at the end of the tube popped and the anethesiologist didn't realize it.
Most surgeries are planned, and the patient has had no food or drink for 24 hours before the operation, for that very reason (to prevent aspiration during intubation). In the case of emergency surgery, it may be a bigger issue, but as long as ET placement is correct, and there is suction available, then it is a very low risk.
The bigger danger is in prehospital medicine, where the patient just had a big meal, and the paramedic doesn't have the benefit of a well lighted operating table to intubate. The danger is more what happened before the intubation attempt (the possibility that the patient may have already aspirated before EMS arrival), Once that tube is placed correctly, it essentially seals off the lungs so vomitus can't get in there. The only way in and out of the lungs is through the tube.
Once aspiration has happened, the danger of aspiration pneumonia is very high. The mortality for that condition is significant, which is why we need to do everything possible to prevent it.
Hope this helps (I didn't know what your educational standpoint was - if you have any further questions just edit them in there and I will try to answer)

Other Answers:
Yes!! But the patient can also get Nosocomial Pneumonia during recovery too!

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Can silent aspiration during general anaesthesia cause bronchopneumonia and mortality?

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