A nurse is aware that the concept of selective toxicity is foundational to antimicrobial therapy. Which of the following statements most accurately describes selective toxicity?
A) A drug harms microbes without harming human cells.
B) A drug's effect on microorganisms is proportionate to dose.
C) Most microbes may be collected from a host and cultured on an alternative medium.
D) A drug can be isolated and produced in a controlled manner in a laboratory setting.
A
You might also like to view...
A pregnant client reports to the health care clinic complaining of loss of appetite, weight loss, and fatigue. Following assessment, tuberculosis is suspected. A sputum culture is obtained, and Mycobacterium tuberculosis is identified in the sputum
The nurse provides instructions to the client regarding therapeutic management of tuberculosis. Which of the following instructions does the nurse provide to the client? 1. The need for therapeutic abortion is required. 2. Medication will not be started until after delivery of the fetus. 3. Isoniazid (INH) plus rifampin (Rifadin) will be required for a total of 9 months. 4. The newborn must receive medication therapy immediately following birth.
Assessment of a woman in labor reveals cervical dilation of 3 cm, cervical effacement of 30%, and contractions occurring every 7 to 8 minutes, lasting about 40 seconds. The nurse determines that this client is in:
A) Latent phase of the first stage B) Active phase of the first stage C) Transition phase of the first stage D) Perineal phase of the second stage
A client's fetal heart rate tracing has a consistent late deceleration pattern. What actions should the nurse take at this time? Select all that apply
1. Prepare for cesarean birth. 2. Increase intravenous fluids. 3. Monitor maternal blood pressure. 4. Position client on the left side. 5. Apply oxygen 7 to 10 L via face mask.
One effect of immobility on a patient's nervous system is
A) heartburn. B) incontinence. C) dizziness. D) insomnia.