levothyroxine (Synthroid).pdf - ACTIVE LEARNING TEMPLATE Medication STUDENT NAME levothyroxine(Synthroid MEDICATION REVIEW MODULE CHAPTER Replacements

levothyroxine (Synthroid).pdf - ACTIVE LEARNING TEMPLATE...

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Unformatted text preview: ACTIVE LEARNING TEMPLATE: Medication STUDENT NAME______________________________________ levothyroxine (Synthroid) MEDICATION___________________________________________________________________________ REVIEW MODULE CHAPTER____________ Replacements CATEGORY CLASS__Thyroid _____________________________________________________________________ PURPOSE OF MEDICATION Expected Pharmacological Action Synthetic form of thyroxine (T4) Converted to triiodothyronine (T3) in the body Therapeutic Use Hypothyroidism Complications Hyperthyroidism (from excessive doses) Medication Administration Give orally for hypothyroidism; IV for myxedema coma. Give daily on an empty stomach. Measure baseline vital signs, weight, and height; monitor periodically. Monitor for cardiac excitability (angina, chest pain, palpitations, dysrhythmias). Monitor thyroxine and thyroid stimulating hormone levels. Be aware that the various formulations of thyroxine are not interchangeable; instruct patients to notify their pharmacy if it dispenses a different levothyroxine product. Expect lifelong replacement therapy. Contraindications/Precautions -Contraindications Thyrotoxicosis/Recent myocardial infarction -Precautions Older adults Renal impairment Diabetes mellitus Cardiovascular disorders (hypertension, angina pectoris, ischemic heart disease) Interactions Cholestyramine (Questran), antacids, iron and calcium supplements, and sucralfate (Carafate) reduce absorption, so patients should not take levothyroxine within 4 hr of these drugs. Food reduces absorption. Many antiseizure and antidepressant drugs, including carbamazepine (Tegretol), phenytoin (Dilantin), phenobarbital, and sertraline (Zoloft) decrease levels. Anticoagulant effects of warfarin (Coumadin) increase. Cardiac response to catecholamines (such as epinephrine) increases. Evaluation of Medication Effectiveness Euthyroid ACTIVE LEARNING TEMPLATES Nursing Interventions Monitor thyroid function. Monitor for indications of hyperthyroidism. Anxiety Tachycardia, palpitations Tremors Altered appetite, abdominal cramping Diarrhea Heat intolerance Fever, diaphoresis Weight loss Menstrual irregularities Client Education Take drug daily; lifelong Watch for and report Anxiety Rapid heart rate, palpitations Tremors Altered appetite, abdominal cramping, diarrhea Heat intolerance Fever, sweating Weight loss Menstrual irregularities Therapeutic Procedure  A7 ...
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