Download CH. 18 Adrenergic Drugs NCLEX test with verified solutions.docx and more Exams Biology in PDF only on Docsity! CH. 18: Adrenergic Drugs NCLEX test with verified solutions 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? - answer 105 mcg/min 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? - answer 1950 mcg/min Epinephrine, as an adrenergic (sympathomimetic) drug, produces which therapeutic effect? A. Urinary retention B. Bronchial constriction C. Decreased intestinal motility D. Increased heart rate and contractility - answer D. Increased heart rate and contractility 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 A hypertensive crisis may occur if adrenergic (sympathomimetic) drugs are given along with which of the following drug classes? A. Alpha1 blockers B. Direct renin inhibitors C. Monoamine oxidase inhibitors (MAOIs) D. Beta blockers - answer C. Monoamine oxidase inhibitors (MAOIs) 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? A. Naloxone (Narcan) B. Lidocaine (Xylocaine) C. Phentolamine (Regitine) D. Nitroprusside (Nipride) - answer C. Phentolamine ( Regitine) 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? A. The patient is experiencing rebound congestion related to excessive use of the medication. B. The medication needs to be used every 30 minutes for maximum effectiveness. C. Afrin nasal spray may be minimally effective to relieve the nasal congestion. D. Adrenergic decongestants should only be used prophylactically, not to treat acute congestion. - answer A. The patient is experiencing rebound congestion related to excessive use of the medication. alpha I receptors - answer 1. located on post-synaptic effector cells 2. primary effect- vasoconstriction 3. periphery alpha II receptors - answer 1. located on pre- synaptic nerve terminals 2. control the release of neurotransmitters 3. central alpha adrenergic agonist responses - answer 1. vasoconstriction 2. CNS stimulation beta adrenergic receptors - answer 1. beta I: primarily in the heart