Identify why the following people are at risk of dehydration: sara, who ran a marathon and jeff, who has been vomiting

Sara is dehydrated because she sweats and the water is distributed faster.

Jeff is Dehydrated because he is losing the stuff in his stomach

Sara:sweat out the water in her body
jeff:threw up all liquids in stomach

20 times a minute is usually the average respritory rate of an adult. additionally the patient is breathing on his own, is clearly maintaining his airway, and is intaking a sufficient amount of air. you shouldn't use a bag valve mask, cpap, or other form of positive pressure ventilation, unless the patient has lost control of his airway, and is not breathing (apneic) or has rapid breathing or slow and shallow respirations. this patient would most likely and should be put on an non-rebreather mask or nrb attached to 100% high flow oxygen at 15 l/min. don't use a nasal cannula, as the amount of oxygen it provides is limited with a rate of 6 l/min.