Question

1. the nasopharyngeal airway is most beneficial because it: a) can effectively stabilize fractured nasal bones if it is inserted properly. b) is generally well tolerated in conscious patients with an intact gag reflex. c) effectively maintains the airway of a patient in cardiopulmonary arrest. d) can maintain a patent airway in a semiconscious patient with a gag reflex. 8. the process of exchanging oxygen and carbon dioxide between the alveoli and the blood of the capillaries is called: a) external respiration. b) cellular metabolism. c) pulmonary ventilation. d) alveolar ventilation. 9. which of the following statements regarding the metered - dose inhaler (mdi) is correct? a) mdis are contraindicated for patients with asthma or emphysema. b) mdis are most commonly used by patients with cardiovascular disease. c) an mdi delivers the same amount of medication every time it is used. d) shaking an mdi prior to use will cause deactivation of the medication. 10. which of the following statements regarding parenteral medications is correct? a) tylenol is an example of a parenteral medication because it is taken orally. b) parenteral medications are absorbed more quickly than enteral medications. c) compared to enteral medications, parenteral medications have fewer side effects. d) parenteral medications are absorbed by the body through the digestive system. 11. what medication form does oral glucose come in? a) gel b) liquid c) suspension d) fine powder 12. nitroglycerin, when given to patients with cardiac - related chest pain: a) relaxes the walls of the coronary arteries. b) increases myocardial contraction force. c) increases blood return to the right atrium. d) constricts the veins throughout the body. 13. an emt may administer aspirin to a patient if: a) the patient is currently experiencing hypotension. b) authorization from medical control has been obtained. c) transport time to the hospital is greater than 30 minutes. d) the patient is believed to be experiencing an acute stroke.

Explanation:

• Question 7: Nasopharyngeal airways are useful for semi - conscious patients with a gag reflex to maintain a patent airway. They don't stabilize nasal bones, and are not mainly for cardiopulmonary arrest or well - tolerated in fully conscious patients with an intact gag reflex.
• Question 8: External respiration is the gas exchange between the alveoli and the blood in the capillaries. Cellular metabolism is related to cell - level processes, pulmonary ventilation is the movement of air in and out of the lungs, and alveolar ventilation is the amount of air reaching the alveoli for gas exchange.
• Question 9: Metered - dose inhalers (MDIs) deliver a consistent amount of medication each time. They are commonly used for asthma and emphysema, not cardiovascular disease, and shaking an MDI before use helps to mix the medication, not deactivate it.
• Question 10: Parenteral medications (injected) are absorbed more quickly than enteral (oral) medications. Tylenol is an enteral medication, parenteral medications may have more side effects due to direct entry into the bloodstream, and they are not absorbed through the digestive system.
• Question 11: Oral glucose typically comes in gel form for easy administration.
• Question 12: Nitroglycerin relaxes the walls of the coronary arteries, improving blood flow to the heart muscle. It doesn't increase myocardial contraction force, blood return to the right atrium, or constrict veins.
• Question 13: An EMT may administer aspirin to a patient if authorization from medical control has been obtained. Hypotension is a contraindication, transport time isn't the main factor, and aspirin is not given for acute stroke without proper evaluation.

Answer:

1. D
2. A
3. C
4. B
5. A
6. A
7. B