The nurse is teaching a patient to wash their hands after using the bathroom as an attempt to break the chain of infection.
Between which two links in the chain of infection does this action intervene?
Infectious agent and reservoir.
Mode of transmission and portal of entry.
Susceptible host and infectious agent.
Portal of exit and mode of transmission.
The Correct Answer is D
Choice A rationale
The infectious agent is the pathogen that causes the disease, and the reservoir is where the infectious agent lives and multiplies. Hand washing does not directly intervene between these two links.
Choice B rationale
The mode of transmission is how the infectious agent travels to other people and places, and the portal of entry is the route by which an infectious agent enters a new host. Hand washing does not directly intervene between these two links.
Choice C rationale
The susceptible host is a person who is vulnerable to the disease, and the infectious agent is the pathogen that causes the disease. Hand washing does not directly intervene between these two links.
Choice D rationale
The portal of exit is the route by which an infectious agent escapes or leaves the reservoir, and the mode of transmission is how the infectious agent travels to other people and places. Hand washing directly intervenes between these two links by removing the infectious agent from the hands (portal of exit) and preventing its transmission to other people or surfaces.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Monitoring the peak level of the antibiotic is important, but it is not the priority nursing action. Peak levels are typically drawn after the drug has been administered and are used to assess whether the dosage is sufficient.
Choice B rationale
Assessing the client’s vital signs is an important part of nursing care, but it is not the priority action when preparing to administer an aminoglycoside antibiotic.
Choice C rationale
Obtaining a serum trough level is the priority nursing action. Trough levels are drawn just before the next dose of the drug is due and are used to assess whether the dosage is safe.
Choice D rationale
Asking the client about drug allergies is an important part of nursing care, but it is not the priority action when preparing to administer an aminoglycoside antibiotic.
Correct Answer is B
Explanation
Choice A rationale
Administering the PRN antianxiety medication is not the most appropriate next step. The client’s symptoms—shortness of breath, anxiety, restlessness, tachycardia, tachypnea, hypotension, and decreased oxygen saturation—are indicative of a potential pulmonary embolism, a life-threatening complication of deep vein thrombosis. While anxiety can be a symptom of a pulmonary embolism, treating it without addressing the underlying cause could delay necessary medical intervention.
Choice B rationale
Calling the rapid response team is the most appropriate next step. The client’s symptoms suggest a potential pulmonary embolism, a serious and life-threatening condition that requires immediate medical intervention. The rapid response team can provide the necessary urgent care.
Choice C rationale
Increasing the intravenous infusion rate is not the most appropriate next step. While hydration is important, it would not address the immediate life-threatening situation. The client’s symptoms suggest a potential pulmonary embolism, which requires immediate medical intervention.
Choice D rationale
Preparing for mechanical ventilation is not the most appropriate next step. While the client’s decreased oxygen saturation and increased respiratory rate suggest respiratory distress, the priority should be to address the potential pulmonary embolism. Mechanical ventilation may be necessary later depending on the client’s response to treatment.
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