Questions and Answers
What is the generic name for Terbutaline?
Which of the following are brand names for Terbutaline? (Select all that apply)
What class of medication is Terbutaline?
Beta agonist bronchodilator
What are the main actions of Terbutaline?
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The onset of Terbutaline administered subcutaneously (SQ) is ___ minutes.
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The onset of Terbutaline given orally (PO) is ___ hours.
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The onset for Terbutaline inhalation (Inh) is between ___ and ___ minutes.
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What are some indications for using Terbutaline? (Select all that apply)
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Which of the following are contraindications for Terbutaline? (Select all that apply)
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What are common side effects of Terbutaline? (Select all that apply)
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What dosage of Terbutaline is recommended for adults by subcutaneous administration?
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What is the adult dosage of Terbutaline when taken orally?
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What is the dosage for Terbutaline inhalation in adults?
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For adults, Terbutaline IV infusion starts at ___ mcg/min and can be increased by ___ mcg every 10 minutes.
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What is the recommended pediatric dosage of Terbutaline for oral administration?
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Terbutaline has fewer cardiac side effects than epinephrine.
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What is the pregnancy category of Terbutaline?
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Study Notes
Terbutaline Overview
- Generic name: Terbutaline
- Brand names include Brethine and Bricanyl
- Classified as a beta agonist bronchodilator
Mechanism of Action
- Stimulates beta 2 receptors leading to relaxation of bronchial smooth muscles
- Inhibits mast cell degranulation, reducing inflammation
- Stimulates ciliary action for mucus clearance
- Also relaxes uterine smooth muscle, helpful in managing preterm labor
Onset of Action
- Subcutaneous (SQ) administration: Onset in 5-15 minutes
- Oral (PO) administration: Onset in 1-2 hours
- Inhalation (Inh) administration: Onset in 5-30 minutes
Indications for Use
- Effective for asthma and bronchodilation in COPD patients
- Used to stop uterine contractions in cases of premature labor
Contraindications
- Avoid in patients with hypersensitivity to terbutaline
- Use caution in patients with heart disease
Common Side Effects
- May cause anxiety, hypertension, nausea/vomiting (N/V), and tachycardia
Drug Interactions
- Caution when used with MAOIs or TCAs
- Beta blockers can diminish the effectiveness
- Potential hypokalemia when combined with furosemide
Dosage Guidelines
- Adult SQ dosage: 0.25 mg with possible repeat; max 0.5 mg in 4 hours
- Adult PO dosage: 2.5-5 mg every 4-6 hours
- Adult inhalation dosage: 400 mcg every 4-6 hours
- Adult IV infusion: Start at 10 mcg/min, increasing by 5 mcg every 10 minutes until contractions stop; max rate is 80 mcg/min
- Pediatric PO dosage: 2.5 mg, three times per day
- Pediatric inhalation dosage: Same as adult
Administration Routes
- Available in subcutaneous (SQ), oral (PO), inhalation (Inh), and intravenous (IV infusion) forms
Additional Notes
- Terbutaline has fewer cardiac side effects compared to epinephrine
- Classified as Pregnancy Category B, indicating no proven risk in humans
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Description
Explore the essential details about Terbutaline, a beta agonist bronchodilator used for asthma and to manage preterm labor. This quiz covers its mechanism of action, onset times, indications, contraindications, and common side effects. Test your knowledge on this crucial medication and its therapeutic applications.
