Possible causes of a missing or weak reaction in the forward group include all of the following except
a. Disease that alters the ABO antigen expression
b. Excessive soluble ABO antigens in patient/donor's plasma
c. Hypogammaglobulinemia
d. Transfusion or transplantation
Answer: c
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Which of the following instructions regarding pressure ulcer prevention is correct?
A. When assisting patient's with bed mobility, nursing staff should be instructed to slide patients rather than drag them. B. Donut-type devices, such as ring cushions, should not be used. C. Patients should be positioned in bed with the head of the bed elevated 45° or more. D. Diapers should be used on incontinent patients on days when staffing is low.
Of the following venomous snakes, which one usually has the highest incidence of a "dry bite?"
A) Copperhead B) Water moccasin C) Mississauga rattlesnake D) Coral snake