Chapter 55 Resp Pharm Flashcards
Actions of Xanthines
Direct effect on the smooth muscles of the respiratory tract, both in the bronchi and in the blood vessels.
Indications of Xanthines
Symptomatic relief or prevention of the bronchial asthma and for reversal of bronchospasm associated with COPD
Pharmacokinetics of Xanthines
Narrow therapeutic margin, rapidly absorbed for the GI tract, metabolized in the liver and excreted in the urine.
Contraindications of Xanthines
GI problems, coronary disease, respiratory dysfunction, renal or hepatic disease, alcoholism, or hyperthyroidism
Adverse effects of Xanthines
Related to theophylline levels in the blood. GI upset, nausea, irritability and tachycardia to seizure, brain damage, and even death.
Drug to drug interactions of Xanthines
Many drugs interact with xanthines, nicotine increases the metabolism
Nursing considerations of Xanthines
History and physical exam and know allergy. Peptic ulcer, gastritis, renal or hepatic dysfunction, and coronary disease. Monitor blood pressure, pulse, cardiac auscultation, peripheral perfusion, and baseline electrocardiogram. Skin, BS, liver and renal function, appropriate lab values well as theophylline levels.
Sympathomimetics
Mimic thee effects of the sympathetic nervous system. One of the actions of the sympathetic nervous system is dilation of the bronchi with increased rate and depth of respiration. Albuterol, arfomoterol, rpherdrine, epinephrine.
Actions of Sympathomimetics
Beta2 selective adrenergic agonists.
Indications of Sympathomimetics
acute asthma, bronchospasm in acute or chronic asthma, prevention of exercise-induced asthma.
Pharmacokinetics of Sympathomimetics
Rapidly distributed after injection, transformed in the liver to metabolites that are excreted in the urine.
Contraindications of Sympathomimetics
Depends on the severity of the underlying condition.
Adverse effects of Sympathomimetics
Sympathomimetic stimulation, CNS stimulation, GI upset, cardiac arrhythmias, hypertension, bronchospasm, sweating, pallor, and flushing.
Drug to drug interactions of Sympathomimetics
General anesthetics
Nursing considerations for Sympathomimetics
Asses history and physical exam and known allergy, cigarette use, pregnancy and lactation, cardiac disease, vascular disease, arrhythmias, diabetes, and hyperthyroidism. Reflexes and orientation, VS, reflexes and orientation and appropriate lab values.