Dominic is a marathon runner. he admits that whenever he runs, he feels euphoric. he cannot begin his day without running for an hour. in the context of neurotransmitters, which of the following is most likely responsible for his feelings of pleasure from running? a. the extended "high" from gaba reuptakeb. the compensatory effects of acetylcholinec. the release of endorphinsd. the action of serotonin depletion during physical exertion

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.