A nursing student asks the nurse about receptor specificity of adrenergic agonist medications. What will the nurse say?
a. "As the dosage of these medications in-creases, drugs in this class are more selec-tive."
b. "Dopamine is selective for dopamine re-ceptors and has no effects on alpha or beta receptors."
c. "Epinephrine is the most selective al-pha-adrenergic agonist medication."
d. "Specificity is relative and is dose depen-dent."
D
Receptor specificity is relative, not absolute, and is dose dependent. At low doses, selectivity is maximal, and selectivity declines as the dose increases. Dopamine is the only drug in this class that acts on dopamine receptors, but it also has effects on alpha and beta receptors. Epinephrine is the least selective of this class.
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The nurse instructs the breastfeeding mother on dietary requirements and determines that further teaching is needed when the mother says:
1. "I will continue taking my prenatal vitamin for three months." 2. "I will drink at least eight glasses of milk every day." 3. "I will maintain a high-fiber diet by eating fresh fruit and vegetables." 4. "I will increase my calorie intake by 500 kcal per day."
The nurse is conducting a class for a group of pregnant clients. Which topic should the nurse include with regard to safety of the fetus?
A) Pedestrian accidents B) Suffocation in the crib C) Alcohol consumption D) Drowning
Which of the following is most essential for the nurse entrepreneur to be successful?
a. Ability to take direction well b. Excellent time-management skills c. Avoidance of risks d. A college degree in business
Nursing students describe actions while practicing physical assessment of a newborn using a model. Which nursing student's statement indicates the need for further teaching?
1. "I auscultated the infant's heart tones for 1 minute." 2. "I palpated peripheral pulses in all the newborn's extremities." 3. "I obtained a higher blood pressure on the legs than on the arms." 4. "I obtained the infant's heart rate by observing the cardiac monitor."