A 25-year-old male is in a car accident and sustains a fracture to his left femur with extensive soft tissue injury. The pain associated with the injury is related to:
a. histamine.
b. prostaglandins.
c. vasoconstriction.
d. immune complex formation.
ANS: B
Prostaglandins cause increased vascular permeability, neutrophil chemotaxis, and pain by direct effects on nerves. Histamine promotes vasodilation. Prostaglandins are not associated with vas-oconstriction or the immune complex formation.
You might also like to view...
A child is admitted to the hospital with suspected hemolytic uremic syndrome (HUS). Laboratory results indicate elevated BUN, creatinine, and potassium. Which action by the nurse takes priority?
A. Administer antibiotics. B. Apply cardiac monitoring. C. Insert a urinary catheter. D. Obtain a stool sample.
The prescriber orders 20 mg of hydrocortisone orally once each day. The nurse will make sure the drug is scheduled to be administered at what time?
a. 8:00 AM b. 12:00 PM c. 4:00 PM d. 9:00 PM
The nurse recognizes that the cardinal sign of endometrial cancer in a postmenopausal woman is
a. pelvic pressure and fullness c. dyspareunia b. vaginal bleeding d. enlargement of the uterus
A client admitted with heart failure overhears the health care provider discussing plans to "digitalize" the client and asks the nurse what this means. Which response by the nurse is the most appropriate?
1. "The dose of digoxin gradually is increased until the heart tissue is saturated and symptoms of heart failure subside." 2. "You will be given a series of digoxin injections over the next few days." 3. "You will be given increasing doses of digoxin until you reach a toxic level, and then the drug will be stopped." 4. "You are given twice the usual dose of digoxin every day until therapeutic results are seen."