7 clinical MCQs in General Pathology. A study of blood product therapy is done. One product is identified that carries the great. Kenya, Africa and glob...
Q1. A study of blood product therapy is done. One product is identified that carries the greatest risk for infection. This blood product has the shortest shelf life, and it must be used as quickly as possible for transfusion. Which of the following products is best described by these findings?
Answer: Platelets
Q2. An 81-year-old previously healthy woman has had a 2 kg weight loss without dieting over the past 2 months. She reports no other problems. On examination there are no abnormal findings. Laboratory studies show a serum alkaline phosphatase of 200 U/L. Which of the following diseases is she most likely to have?
Answer: Acute viral hepatitis
Q3. A 17-year-old boy has developed a mild fever with sore throat over the past day. On physical examination he has generalized lymphadenopathy. Laboratory studies show a CD4 lymphocyte count of 375/microliter. He is most likely to be infected with which of the following agents?
Answer: HTLV-1
Q4. A healthy 27 year old male donates blood. He completes the questionnaire and interview with no exclusions noted. The presence of which of the following infectious agents will not routinely tested for on his blood collected for transfusion?
Answer: Human immunodeficiency virus type 1
Q5. A 5-year-old previously healthy child develops a mild watery diarrhea that lasts for 3 days. On physical examination the child has a low-grade fever. A stool for ova and parasites is negative. The child recovers without therapy and has no sequelae. What is the most likely infectious etiology for her diarrheal illness?
Answer: Shigella flexneri
Q6. During phlebotomy, there is difficulty obtaining blood for all of the test ordered. Not all of the collection tubes are completely filled. Of the following collection tubes, which is the only one that may be partially filled and not affect test results?
Answer: Gray top for glucose
Q7. A 25-year-old woman incurs a head injury from a skiing accident. She is now in stable condition and her vital signs are normal. Serum electrolytes now show Na 134 meq/L, K 7.6 meq/L, Cl 100 meq/L, and CO2 25 meq/L. What is the most likely etiology for these laboratory test findings?
Answer: Hemolyzed specimen