A nurse is preparing to administer an intravenous antibiotic to a client who has sepsis, a life-threatening condition that occurs when the body's response to infection causes widespread inflammation, organ dysfunction, and tissue damage. Which of the following interventions should the nurse perform before administering the antibiotic?

Choice A reason: This is a correct answer because obtaining a blood culture from the client before administering the antibiotic can help identify the causative microorganism and its sensitivity to different antibiotics, which can guide the selection of the most appropriate antibiotic therapy.

Choice B reason: This is an incorrect answer because checking the client's vital signs and oxygen saturation is an ongoing intervention that should be performed throughout the course of treatment, but not necessarily before administering the antibiotic.

Choice C reason: This is an incorrect answer because assessing the client's level of consciousness and orientation is an ongoing intervention that should be performed throughout the course of treatment, but not necessarily before administering the antibiotic.

Choice D reason: This is an incorrect answer because flushing the client's intravenous line with normal saline is an intervention that should be performed after administering the antibiotic, not before, to ensure that no residual antibiotic remains in the line.

Choice A reason: This is a correct answer because it accurately describes the pathogenesis of asthma and its triggers. Asthma is caused by an overreaction of the immune system to certain triggers, such as allergens, infections, or irritants, that leads to inflammation, bronchoconstriction, mucus production, and coughing.

Choice B reason: This is an incorrect answer because it confuses asthma with another condition called pulmonary hypertension, which is characterized by high blood pressure in the lungs and reduced oxygen supply.

Choice C reason: This is an incorrect answer because it confuses asthma with another condition called pulmonary edema, which is characterized by fluid accumulation in the lungs and impaired gas exchange.

Choice D reason: This is an incorrect answer because it confuses asthma with another condition called cystic fibrosis, which is a genetic disorder that affects the mucus glands and causes thick and sticky mucus in the lungs and other organs.