Nokea
Which of the following circumstances would most clearly warrant autologous blood donation?
- A. The patient has type-O blood.
- B. The patient has sickle cell disease or a thalassemia.
- C. The patient has elective surgery pending.
- D. The patient has hepatitis C.
Correct Answer: C
Rationale: Autologous blood donation is useful for many elective surgeries where the potential need for transfusion is high. Type-O blood, hepatitis, sickle cell disease, and thalassemia are not clear indications for autologous donation.
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A patient is receiving a blood transfusion and complains of a new onset of slight dyspnea. The nurses rapid assessment reveals bilateral lung crackles and elevated BP. What is the nurses most appropriate action?
- A. Slow the infusion rate and monitor the patient closely.
- B. Discontinue the transfusion and begin resuscitation.
- C. Pause the transfusion and administer a 250 mL bolus of normal saline.
- D. Discontinue the transfusion and administer a beta-blocker, as ordered.
Correct Answer: A
Rationale: The patient is showing early signs of hypervolemia; the nurse should slow the infusion rate and assess the patient closely for any signs of exacerbation. At this stage, discontinuing the transfusion is not necessary. A bolus would worsen the patients fluid overload.
An older adult client is exhibiting many of the characteristic signs and symptoms of iron deficiency. In addition to a complete blood count, what diagnostic assessment should the nurse anticipate?
- A. Stool for occult blood
- B. Bone marrow biopsy
- C. Lumbar puncture
- D. Urinalysis
Correct Answer: A
Rationale: Iron deficiency in the adult generally indicates blood loss (e.g., from bleeding in the GI tract or heavy menstrual flow). Bleeding in the GI tract can be preliminarily identified by testing stool for the presence of blood. A bone marrow biopsy would not be undertaken for the sole purpose of investigating an iron deficiency. Lumbar puncture and urinalysis would not be clinically relevant.
The nurse is providing care for an older adult who has a hematologic disorder. What age-related change in hematologic function should the nurse integrate into care planning?
- A. Bone marrow in older adults produces a smaller proportion of healthy, functional blood cells.
- B. Older adults are less able to increase blood cell production when demand suddenly increases.
- C. Stem cells in older adults eventually lose their ability to differentiate.
- D. The ratio of plasma to erythrocytes and lymphocytes increases with age.
Correct Answer: B
Rationale: Due to a variety of factors, when an older person needs more blood cells, the bone marrow may not be able to increase production of these cells adequately. Stem cell activity continues throughout the lifespan, although at a somewhat decreased rate. The proportion of functional cells does not greatly decrease and the relative volume of plasma does not change significantly.
The nurses review of a patients most recent blood work reveals a significant increase in the number of band cells. The nurses subsequent assessment should focus on which of the following?
- A. Respiratory function
- B. Evidence of decreased tissue perfusion
- C. Signs and symptoms of infection
- D. Recent changes in activity tolerance
Correct Answer: C
Rationale: Ordinarily, band cells account for only a small percentage of circulating granulocytes, although their percentage can increase greatly under conditions in which neutrophil production increases, such as infection. This finding is not suggestive of problems with oxygenation and subsequent activity intolerance.
An interdisciplinary team has been commissioned to create policies and procedures aimed at preventing acute hemolytic transfusion reactions. What action has the greatest potential to reduce the risk of this transfusion reaction?
- A. Ensure that blood components are never infused at a rate greater than 125 mL/hr.
- B. Administer prophylactic antihistamines prior to all blood transfusions.
- C. Establish baseline vital signs for all patients receiving transfusions.
- D. Be vigilant in identifying the patient and the blood component.
Correct Answer: D
Rationale: The most common causes of acute hemolytic reaction are errors in blood component labeling and patient identification that result in the administration of an ABO-incompatible transfusion. Actions to address these causes are necessary in all health care settings. Prophylactic antihistamines are not normally administered, and would not prevent acute hemolytic reactions. Similarly, baseline vital signs and slow administration will not prevent this reaction.