Reference Range: 1329545.
A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement?
Decrease expiratory flow time.
Decrease expiratory pressure.
Increase rate of ventilation.
Increase ventilator tidal volume.
The Correct Answer is B
Choice A rationale:
Decreasing expiratory flow time is not the appropriate intervention in this case. The client's pH and PaCO2 levels suggest respiratory acidosis, which indicates inadequate ventilation. Increasing expiratory flow time might exacerbate the acidosis by reducing ventilation.
Choice C rationale:
Increasing the rate of ventilation (respiratory rate) is a potential intervention to improve the client's acid-base balance. However, it should be done cautiously and under medical supervision to avoid respiratory alkalosis. It is not the first-line intervention in this scenario.
Choice D rationale:
Increasing the ventilator tidal volume may help improve ventilation, but it should also be done under medical guidance to prevent barotrauma. It is not the initial intervention to address the client's respiratory acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Asking questions in a vague, non-specific format is not the best approach for addressing intimate partner violence. This approach may confuse the client or make them feel uncomfortable, as they may not know what specific information the nurse is seeking. It is essential to use clear and direct communication when addressing sensitive issues like intimate partner violence.
Choice B rationale:
Beginning with questions that are less sensitive in nature is the preferred approach when interviewing a client about intimate partner violence. This allows the nurse to establish rapport and build trust with the client before delving into more sensitive topics. Starting with less sensitive questions can help the client feel more comfortable and willing to share information about their situation.
Choice C rationale:
Getting the most difficult questions over with first is not the best approach when addressing intimate partner violence. Starting with the most challenging questions may cause the client to become defensive or unwilling to cooperate. It is essential to build a therapeutic relationship before discussing sensitive topics to ensure the client's emotional safety and willingness to disclose information.
Choice D rationale:
Sharing personal values to put the client at ease is not an appropriate approach when addressing intimate partner violence. It can be perceived as unprofessional and may compromise the objectivity and neutrality of the nurse in providing care. The focus should be on the client's needs and concerns, not the nurse's personal beliefs.
Correct Answer is A
Explanation
Choice A rationale:
The combination of trimethoprim and sulfamethoxazole has a synergistic effect, which means that the two drugs work together to inhibit bacterial growth more effectively than either drug alone. This combination is commonly used to treat urinary tract infections (UTIs) caused by susceptible bacteria.
Choice B rationale:
The combination of trimethoprim and sulfamethoxazole does not have an additive effect that reduces the dosage and frequency of administration of each drug. Instead, it is prescribed as a fixed combination with specific dosages of each drug.
Choice C rationale:
The combination of trimethoprim and sulfamethoxazole does not have an antagonistic effect that prevents the development of resistance to either drug. In fact, the combination is chosen because it covers a broader spectrum of bacteria and reduces the likelihood of resistance development.
Choice D rationale:
The combination of trimethoprim and sulfamethoxazole does not have a selective effect that targets only the bacteria causing the UTI and spares the normal flora. It affects a wide range of bacteria, including both pathogenic and normal flora.
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