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Mast Cell Stabilizers

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Mast Cell Stabilizers

Key Points

  • Mast cell stabilizers prevent release of histamine and other inflammatory mediators from mast cells.
  • Cromolyn is used prophylactically for asthma/allergic-airway symptom prevention.
  • This class does not provide immediate bronchodilation and is not a rescue treatment for acute attacks.
  • Overall systemic absorption is low and tolerability is usually good.

Mechanism of Action

Mast cell stabilizers inhibit mediator release from mast cells by limiting calcium-dependent degranulation processes. This reduces downstream allergic inflammation, bronchoconstriction triggers, and mucus-related symptom burden.

Indications

  • Asthma symptom prophylaxis.
  • Selected allergic-rhinitis/allergic-airway prevention pathways when ordered.
  • Adjunct long-term control strategy when trigger-related symptoms are recurrent.

Nursing Considerations

  • Confirm the client understands prophylactic timing: regular preventive use, not PRN rescue for sudden dyspnea.
  • Reassess symptom pattern and rescue-inhaler use because persistent escalation suggests inadequate control.
  • Keep the medication list current and screen for hypersensitivity before initiation.
  • Reinforce that worsening wheeze/shortness of breath requires rescue-plan escalation, not dose stacking of cromolyn.

Side Effects and Adverse Effects

  • Cough or throat irritation after inhalation.
  • Sneezing, nasal congestion, nausea, or mild wheeze in some clients.
  • Headache, abdominal discomfort, myalgia, rash, or diarrhea may occur.
  • Contraindication: hypersensitivity to cromolyn products.

Health Teaching

  • Take exactly as prescribed and continue during asymptomatic periods for prevention.
  • Do not stop abruptly without discussing plan adjustments with the prescriber.
  • Do not use as a rescue medication during acute bronchospasm.
  • Report worsening respiratory symptoms, persistent wheeze, or bothersome adverse effects.
  • bronchodilators - Rescue and bronchodilator maintenance therapy compared with nonrescue prophylactic control.
  • leukotriene-receptor-antagonists - Alternative oral controller pathway for inflammatory asthma patterns.
  • corticosteroids - Anti-inflammatory maintenance therapy often used in higher-evidence controller regimens.

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