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Leukotriene receptor antagonists (LTRAs) are a class of medications commonly used in the management of asthma and allergic rhinitis. They work by blocking leukotriene receptors, which play a significant role in inflammation and bronchoconstriction.
Understanding Leukotriene Receptor Antagonists
LTRAs, such as montelukast and zafirlukast, reduce airway inflammation and improve breathing. They are often prescribed as an adjunct to inhaled corticosteroids or as an alternative for patients who cannot tolerate inhalers.
The Importance of Liver Function Monitoring
While LTRAs are generally considered safe, they have been associated with rare cases of liver injury. Monitoring liver function tests (LFTs) is recommended, especially during the initial months of therapy.
Why Monitor Liver Function?
Liver toxicity can be asymptomatic in early stages. Regular monitoring helps detect any liver impairment early, preventing severe complications.
Recommended Monitoring Schedule
- Baseline LFTs before starting therapy
- Repeat testing after 1-2 months of treatment
- Periodic testing every 6-12 months during long-term therapy
Signs of Liver Dysfunction
Patients should be educated to recognize symptoms indicating liver problems, such as:
- Jaundice (yellowing of skin or eyes)
- Abdominal pain or tenderness
- Dark urine
- Unusual fatigue
- Nausea or vomiting
Conclusion
Monitoring liver function is a crucial aspect of safely prescribing leukotriene receptor antagonists. Regular testing and patient education can help prevent serious liver complications and ensure effective management of respiratory conditions.