Which of the following decreases the ability of malaria species to infect RBCs?
a. Duffy-positive phenotype
b. Heterozygosity for hemoglobin S (Hb S)
c. Hereditary spherocytosis
d. Rh-negative genotype
ANS: B
Heterozygosity for Hb S decreases the ability of malaria species to infect RBCs so infected individuals do not develop severe complications. RBCs lacking the Duffy phenotype are not vulnerable to malaria. Neither the Rh-negative genotype nor hereditary spherocytosis provides protection from infection with malaria.
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CPT, Fourth Edition (CPT-4) is a listing of five-character ________ codes and descriptions used to report outpatient medical services and procedures
a. alphabetic b. numeric c. alphanumeric d. procedural
Your patient is a 17-year-old male baseball player found pulseless and apneic after being struck in the chest by a baseball 6 minutes ago. He is surrounded by other players and staff but no one is providing care. You should:
A) place him on a backboard. B) begin chest compressions. C) elevate the patient's legs. D) attach the AED and analyze.