A nurse is preparing a client for a lumbar puncture. Which position should the nurse place the client in to facilitate the procedure?
Supine with head elevated
Prone with legs extended
Lateral recumbent with knees flexed
Sitting upright with back straight
The Correct Answer is C
Choice A reason: Supine with head elevated is used for comfort or respiratory support but not for lumbar puncture. This position does not allow access to the lumbar spine or flex the back to open intervertebral spaces, which is necessary for safe needle insertion during the procedure.
Choice B reason: Prone with legs extended is used for procedures like wound care but not lumbar puncture. This position does not flex the spine to widen intervertebral spaces, making needle insertion difficult and risky. The lateral recumbent position is standard for accessing the subarachnoid space.
Choice C reason: Lateral recumbent with knees flexed maximizes lumbar spine flexion, opening intervertebral spaces for safe needle insertion into the subarachnoid space during a lumbar puncture. This position reduces the risk of nerve damage and ensures accurate cerebrospinal fluid collection, making it the standard choice.
Choice D reason: Sitting upright with back straight may be used in some procedures but is less common for lumbar puncture. It does not provide optimal spinal flexion compared to the lateral recumbent position, which better exposes the lumbar vertebrae, reducing complications during needle insertion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Engaging the client in a walk and family discussion uses therapeutic communication and redirection, common in dementia care. This non-pharmacological approach validates emotions, reduces distress, and promotes calmness by shifting focus to positive memories, aligning with person-centered care principles to address emotional needs first.
Choice B reason: Alprazolam, a benzodiazepine, reduces anxiety but carries risks like sedation and falls in dementia patients. Pharmacological interventions should be secondary to non-pharmacological approaches, as they may exacerbate confusion or dependency. Addressing emotional distress through engagement is preferred before considering medications for anxiety management.
Choice C reason: Olanzapine, an antipsychotic, is used for severe agitation or psychosis in dementia. It poses risks like sedation, extrapyramidal symptoms, and increased mortality in elderly patients. Non-pharmacological interventions, like redirection, are prioritized to manage emotional distress safely, reserving medications for when behavioral approaches fail.
Choice D reason: Isolating the client in their room may increase distress and agitation in dementia patients, as it does not address their emotional needs. Social isolation can worsen confusion and feelings of abandonment. Therapeutic engagement, such as redirection or validation, is more effective in calming the client and fostering trust.
Correct Answer is A
Explanation
Choice A reason: A nasal cannula at 2 L/min delivers low-flow oxygen (24–28% FiO2), suitable for COPD clients to maintain oxygen saturation without suppressing their hypoxic drive. COPD patients rely on low oxygen levels to stimulate breathing, and low-flow oxygen prevents hyperoxia, which could reduce respiratory drive.
Choice B reason: A simple face mask at 8 L/min delivers 40–60% FiO2, which is too high for COPD clients. High oxygen levels can suppress the hypoxic drive, leading to hypoventilation and CO2 retention, worsening respiratory acidosis. Low-flow oxygen is preferred to balance oxygenation and respiratory drive.
Choice C reason: A non-rebreather mask at 15 L/min delivers 60–80% FiO2, inappropriate for COPD clients. High oxygen concentrations risk suppressing the hypoxic drive, causing CO2 retention and respiratory failure. COPD management prioritizes low-flow oxygen to maintain safe oxygenation without disrupting respiratory regulation.
Choice D reason: A Venturi mask at 40% FiO2 delivers precise oxygen concentrations but is still too high for stable COPD clients. High FiO2 can suppress the hypoxic drive, leading to hypoventilation. A nasal cannula at 2 L/min is safer, providing adequate oxygenation while preserving respiratory drive.
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