Which is true of the biphasic hemolysin usually associated with paroxysmal cold hemoglobinuria (PCH)?
a. Anti-P that binds to red blood cells at body temperature but activates complement at cool temperatures
b. Anti-P that binds to red blood cells at cool temperatures but activates complement at body temperature
c. Anti-P1 that binds to red blood cells at body temperature but activates complement at cool temperatures
d. Anti-P1 that binds to red blood cells at cool temperatures but activates complement at body temperature
Answer: b
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You are assessing a 2½-year-old child who was involved in a minor car collision. She is currently alert and oriented. While you are assessing her for possible injuries, which of the following actions would be considered most appropriate?
a. Assess the child starting at her head and moving to her feet. b. Allow the child to hold a favorite toy during the assessment. c. Be stern with the child and provide strict instructions on what you expect from her. d. Examine possible painful sites first.
Patients with a history of ____________________ syndrome are at greater risk for an abdominal aortic aneurysm and may experience it at an earlier age.
Fill in the blank(s) with the appropriate word(s).