OB_Methergine (methylergonovine) - M...

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Methergine (methylergonovine) Routine use: Excessive vasoconstriction may result when used with heavy cigarette smoking ( nicotine ) or other vasopressors such as dopamine . Safe dose & range: PO (Adults): 200-400 mcg (0.4-0.6 mg) q 6-12 hr for 2-7 days. IM IV (Adults): 200 mcg (0.2 mg) q 2-4 hr for up to 5 doses. Classification, Action & Indication: C- Pharmacologic: ergot alkaloids A - Uterine contraction. Major side effects: CNS: dizziness, headache. EENT: tinnitus. Resp: dyspnea. CV: HYPOTENSION , arrhythmias, chest pain, hypertension, palpitations. GI: nausea , vomiting . GU: cramps . Derm: diaphoresis. Misc: allergic reactions. Nursing Implications: Assessment Monitor blood pressure, heart rate, and uterine response frequently during medication administration. Notify health care professional promptly if uterine relaxation becomes prolonged or if character of vaginal bleeding changes . Assess for signs of ergotism (cold, numb fingers and toes, chest pain, nausea, vomiting, headache, muscle pain, weakness).
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