CH 18 NCLEX PREP

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pharmacology
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1

Epinephrine, as an adrenergic (sympathomimetic) drug, produces which therapeutic effect?

Increased heart rate and contractility

2

The health care provider has prescribed dopamine (Intropin) to treat the patient’s hypovolemic shock secondary to severe blood loss. For the medication to be effective, the health care provider must also prescribe which treatment?

Fluid replacement

3

A patient weighing 176 lb is to receive a dopamine (Intropin) continuous intravenous (IV) infusion at 5 mcg/kg/min. The solution strength available is dopamine 400 mg in 500 mL D5W. The nurse will infuse the medication at which rate?

30 mL/hr

4

When assessing for cardiovascular effects of an adrenergic (sympathomimetic) drug, the nurse understands that these drugs produce which effect on the heart?

A positive inotropic, positive chronotropic, and positive dromotropic effect

5

A hypertensive crisis may occur if adrenergic (sympathomimetic) drugs are given along with which of the following drug classes?

Monoamine oxidase inhibitors (MAOIs)

6

The nurse assesses the patient’s IV site, and it has infiltrated during the infusion of dopamine (Intropin). The nurse will prepare which medication to treat this infiltration?

Phentolamine (Regitine)

7

A patient using Afrin nasal spray complains of worsening cold symptoms and tells the nurse, “I don’t understand why this is not working. I am using it almost every 3 hours.” The nurse’s response is based on knowledge of which drug information?

The patient is experiencing rebound congestion related to excessive use of the medication.

8

The nurse has a prescription to infuse dobutamine (Dobutrex) intravenously at 3 mcg/kg/min in a pediatric patient with cardiac decompensation. The patient's weight is 77 lb. What is the correct dosage to administer?

105 mcg/min, The patient's weight of 77 lb is converted to kilograms by dividing 77 by 2.2, which equals 35 kg. 3 mcg/kg/min multiplied by 35 kg equals 105 mcg/min.

9

The nurse has a prescription to infuse dopamine (Intropin) intravenously at 30 mcg/kg/min in an adult patient for cardiopulmonary arrest. If the patient weighs 143 lb, what is the correct dosage to administer?

1950 mcg/min, The patient's weight of 143 lb is converted to kilograms by dividing 143 by 2.2, which equals 65 kg. When 65 kg is multiplied by 30 mcg/kg/min, the result is 1950 mcg/min.