You should never re-enter a burning building for belongings, animals, or people. Firefighters do that for you.
To ensure patient's safety, the nurse should make sure aside from informing the patient and significant others to finish the treatment prescribed he or she should also make sure the patient is well hydrated like providing fluid replacement such as Oresol or drinks with electrolytes such as Gatorade to avoid dehydration.
This is a very tricky question as you can get a lot of answers that will be partially correct.
The best answer in my oppinion is between the range of 7 minutes to around 15 minutes.
The reason why saying just one value isn'the best idea is because, if we have two groups of people, the average for the first group might be 7 minutes, and the average for the second group might be 11 minutes. So it's hard to say the average is 7 minutes. It's better presented in an interval where we can find this number :)
Im thinking simple carbohydrates.