The nurse is caring for a client with severe thrombocytopenia who is scheduled for a bone marrow biopsy.
The provider prescribes a platelet transfusion for the client. When should the nurse anticipate administering the platelets?
Slowly during the bone marrow biopsy procedure.
Immediately following the completion of the bone marrow biopsy.
Immediately before the start of the bone marrow biopsy.
1 to 2 hours before the bone marrow biopsy begins.
The Correct Answer is C
The clinical scenarios involve managing procedural safety in hematology, post-surgical electrolyte monitoring, emergency cardiac stabilization for potassium imbalance, and surgical intervention for burn-induced compartment syndrome. Knowledge of hemostasis, calcium metabolism, membrane potential stabilization, and tissue perfusion mechanics is required to provide safe nursing care.
Choice A rationale
Administering platelets during a procedure is impractical and increases the risk of bleeding before the infusion takes effect. Platelets must be present in the vascular system prior to tissue trauma to facilitate immediate clot formation at the site.
Choice B rationale
Post-procedural administration fails to address the high risk of hemorrhage during the biopsy itself. In severe thrombocytopenia, where counts are often below 20,000 cells/uL, the primary goal is pre-emptive stabilization to prevent uncontrolled internal bleeding.
Choice C rationale
Infusing platelets immediately before the biopsy ensures peak circulating levels during the most invasive phase. This timing optimizes the aggregation of platelets at the puncture site, mitigating the risk of hematoma or severe hemorrhage in high-risk patients.
Choice D rationale
Platelets have a short half-life and are rapidly consumed or sequestered. Administering them 1 to 2 hours early may lead to decreased efficacy at the actual time of the biopsy, increasing the risk of procedural bleeding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
This scenario involves metabolic complications following chemotherapy for high-grade malignancies. Knowledge of intracellular electrolyte release, nucleic acid breakdown, and the resulting renal and systemic impacts is required to identify the specific oncological emergency occurring during rapid cell lysis.
Choice A rationale
Gastric ulcers cause abdominal pain and potential bleeding but do not account for a rapid increase in serum uric acid. Uric acid elevation is a systemic metabolic event related to DNA breakdown, whereas ulcers are localized mucosal erosions.
Choice B rationale
Tumor lysis syndrome occurs when chemotherapy causes rapid destruction of malignant cells, releasing intracellular contents. This leads to hyperuricemia, hyperkalemia, and hyperphosphatemia. High uric acid levels (above 6 mg/dL) can cause acute renal failure due to crystal formation.
Choice C rationale
While acute kidney injury may result from tumor lysis syndrome, it is a secondary consequence of the metabolic derangement. The primary diagnosis explaining the constellation of rapid uric acid rise and chemotherapy timing is the lysis syndrome.
Choice D rationale
Gastroenteritis causes nausea and abdominal pain but does not explain the significant metabolic shift of elevated uric acid. It is typically an infectious or inflammatory condition of the digestive tract, not a systemic response to cytotoxic therapy.
Correct Answer is C
Explanation
Acute trauma causes physiological and psychological distress, often manifesting as agitation or panic. Resolving this requires applying crisis intervention principles, prioritizing safety, and using therapeutic communication to de-escalate the client while monitoring for signs of worsening physical or mental instability.
Choice A rationale
Leaving an agitated, tachycardic client alone is unsafe. The client may fall, pull out invasive lines, or suffer a physiological crisis. Constant observation is necessary to maintain physical safety and monitor a heart rate exceeding 100/min.
Choice B rationale
While understanding coping mechanisms is part of psychosocial assessment, it is not the priority during an acute, agitated crisis. The immediate need is to stabilize the client and ensure safety before exploring long-term behavioral patterns.
Choice C rationale
Staying with the client provides immediate support and safety. Positioning near the door ensures nurse safety, while calm communication reduces sympathetic nervous system overactivity, helping to lower a heart rate of 128/min and rapid respirations.
Choice D rationale
Commanding a distressed client to calm down is often counterproductive and non-therapeutic. It minimizes the client's feelings and can increase agitation. Therapeutic intervention requires a calm presence rather than authoritative demands during a traumatic event.
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