Why does tissue damage occurs in acute rejection after organ transplantation?
a. Th1 cells release cytokines that activate infiltrating macrophages, and cytotoxic T cells directly attack the endothelial cells of the transplanted tissue.
b. Circulating immune complexes are deposited in the endothelial cells of transplanted tissue, where the complement cascade lyses tissue.
c. Receptors on natural killer cells recognize antigens on the cell surface of transplanted tissue, which releases lysosomal enzymes that destroy tissue.
d. Antibodies coat the surface of transplanted tissue to which mast cells bind and liberate preformed chemical mediators that destroy tissue.
Answer: a. Th1 cells release cytokines that activate infiltrating macrophages, and cytotoxic T cells directly attack the endothelial cells of the transplanted tissue.
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a. Front facing in back seat b. Rear facing in back seat c. Front facing in front seat with air bag on passenger side d. Rear facing in front seat if an air bag is on the passenger side
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A. "Your cancer is widespread and requires more than the usual amount of radiation treatment." B. "The cost of giving larger doses of radiation for a shorter period of time is unjus-tified by the results." C. "It is less likely that you will become anemic if the radiation is given in small doses over a longer time period." D. "Research has shown that more cancer cells are killed if the radiation is given in smaller doses over a longer time period."
The nurse is caring for a 79-year-old male who has a non–weight-bearing cast on the left lower extremity. The patient ambulates without using a walker despite repeated instruction from the nurse to call for assistance
Which response by the nurse is most likely to keep the patient from falling? a. Apply a vest restraint and offer frequent toileting. b. Plan fall prevention with patient, family, and healthcare provider. c. Inform family that the patient needs phys-ical restraints. d. Document that the patient has a high po-tential for falling.
Initial ambulation means
a. reddened areas of skin. b. postoperative observation. c. the patient's first walk following surgery. d. preparing the patient for surgery.