A patient is receiving methenamine (Mandelamine) for the treatment of a chronic UTI. Which agent, when given concurrently with methenamine, can create a risk for crystalluria?
a. Ciprofloxacin (Cipro)
b. Sulfisoxazole
c. Nalidixic acid (NegGram)
d. Erythromycin (ERYC)
ANS: B
Methenamine should not be combined with sulfisoxazole. Formaldehyde forms an insoluble complex with sulfonamides, posing a risk of urinary tract injury from crystalluria.
Ciprofloxacin would not increase the risk of crystalluria, but it may increase the risk of tendon rupture.
Nalidixic acid can be administered with methenamine without increasing the risk of crystalluria.
Erythromycin would not increase the risk of crystalluria.
You might also like to view...
The school nurse is discussing challenges of the adolescent years with a group of high school students in health class. What challenges toward adolescent development will the nurse include?
a. Developing intimacy b. Maintaining dependence on parents c. Searching for identity d. Adjusting to body changes e. Establishing future goals
While assisting a patient with limited mobility to perform range-of-motion exercises, the nurse plans to assess the patient's adduction of the arm, which is the patient's ability to:
A) Move the limb toward the midline of the body. B) Bend the joint so that the angle of the joint diminishes. C) Turn the limb towards the center of the body. D) Rotate the forearm so that the palm of the hand is down.
Throughout history a number of functions traditionally have been performed by families. Which of the following is correct about family function? Families:
1. Provide financial survival for all members 2. Educate and socialize the young 3. Have all the same characteristics 4. Must be educated together for learning to occur
After teaching a group of community health students about public and private sector programs and initiatives aimed at combating homelessness, the instructor determines that they need additional teaching when they identify which of the following as a priva
A) National Coalition for the Homeless B) National Alliance to End Homelessness C) National Resource Center on Homelessness and Mental Illness D) National Low Income Housing Coalition