the nurse is teaching a nursing student about the minimal effective concentration mec of antibiotics which statement by the nursing student indicates
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HESI RN

HESI Medical Surgical Practice Quiz

1. The nurse is teaching a nursing student about the minimal effective concentration (MEC) of antibiotics. Which statement by the nursing student indicates understanding of this concept?

Correct answer: C

Rationale: The MEC is the minimum amount of drug needed to halt the growth of a microorganism. A level greater than the MEC helps eradicate infections. Drugs at or above the MEC are usually bactericidal, not bacteriostatic. Therefore, choice A is incorrect. Broadening the spectrum of a drug refers to its range of activity against different microorganisms, which is not directly related to MEC. Thus, choice B is incorrect. Increasing the therapeutic index involves maximizing the effectiveness of a drug while minimizing its toxicity, which is not specifically related to MEC. Therefore, choice D is also incorrect.

2. During CPR, when attempting to ventilate a client's lungs, the nurse notes that the chest is not moving. What action should the nurse take first?

Correct answer: B

Rationale: The most common reason for inadequate lung aeration during CPR is the incorrect positioning of the head, leading to airway obstruction. Therefore, the initial action should be to reposition the head to open the airway properly and attempt to ventilate again. Using a laryngoscope to check for foreign bodies in the airway (Choice A) is not the first step and could delay crucial interventions. Turning the client to the side and administering back blows (Choice C) is not indicated in this scenario as the focus is on ventilating the lungs. Performing a finger sweep of the mouth (Choice D) is not recommended as it may push obstructions further into the airway during CPR.

3. A nurse cares for clients with urinary incontinence. Which types of incontinence are correctly paired with their clinical manifestations? (Select all that apply.)

Correct answer: D

Rationale: The correct answer is D, as all the choices are correctly paired with their clinical manifestations. Stress incontinence is characterized by urine loss with physical exertion, coughing, sneezing, or exercising. Urge incontinence presents with a sudden and strong urge to void, often accompanied by a large amount of urine released during each occurrence. Overflow incontinence occurs when the bladder is distended, leading to a constant dribbling of urine. Functional incontinence, not mentioned in the options, is the leakage of urine due to factors unrelated to a lower urinary tract disorder. Reflex incontinence, also not mentioned, is a condition resulting from abnormal detrusor contractions.

4. A nurse plans care for an older adult client. Which interventions should the nurse include in this client’s plan of care to promote kidney health? (Select all that apply.)

Correct answer: D

Rationale: The correct interventions to promote kidney health in an older adult client include ensuring adequate fluid intake to maintain hydration and leaving the bathroom light on at night to promote safe ambulation. Adequate hydration supports kidney function and helps prevent urinary tract infections. Encouraging the use of the toilet every 6 hours is not specific to kidney health and may not be individualized to the client's needs. Providing thorough perineal care after each voiding is important for hygiene but not directly related to promoting kidney health. Assessing for urinary retention and urinary tract infections is crucial but falls under assessment rather than interventions for promoting kidney health specifically.

5. After confirming that liquids are allowed, which assessment action should the nurse consider a priority for a client who is fully awake after a gastroscopy?

Correct answer: D

Rationale: After a gastroscopy, it is crucial for the nurse to prioritize checking the client's gag and swallow reflexes before allowing them to drink anything. This is because the effects of local anesthesia need to dissipate, and the airway's protective reflexes, including the gag and swallow reflexes, must have returned to prevent aspiration. Listening to lung and bowel sounds (Choice A) may be important but does not take precedence over ensuring the client's safety post-gastroscopy. Obtaining the client's pulse and blood pressure (Choice B) is also important but not the priority in this scenario. Assisting the client to the bathroom to void (Choice C) is a routine nursing action and is not directly related to the immediate safety concern of checking the client's gag and swallow reflexes post-gastroscopy.

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