Topic
How to use your child's metered dose inhaler
💡 What You Need to Know
- Purpose of MDI: Metered Dose Inhalers deliver medication directly to the lungs to manage respiratory conditions like asthma or bronchiolitis in children.
- Spacer Importance: For children, especially those under 8 years old, using a spacer (valved holding chamber) is crucial. It helps ensure the medication reaches the lungs effectively and reduces deposition in the mouth and throat.
- Correct Technique: Proper technique is vital for the medication to work as intended. Incorrect use can lead to poor symptom control.
- Types of Medication: MDIs can deliver 'rescue' medications (e.g., albuterol for quick relief) or 'controller' medications (e.g., corticosteroids for long-term prevention).
🤒 Associated Symptoms
- Wheezing: A high-pitched whistling sound, often heard when breathing out, indicating narrowed airways.
- Persistent Cough: A cough that doesn't go away, especially at night, during exercise, or after exposure to triggers.
- Shortness of Breath: Difficulty breathing, rapid breathing, or visible effort to breathe, particularly during activity or illness.
- Chest Tightness: A feeling of pressure or discomfort in the chest, which a child might describe as 'my chest feels funny' or 'it's hard to breathe deep'.
- Activity Limitation: Reduced ability to play, run, or participate in usual activities due to respiratory distress.
- Retractions: Visible pulling in of the skin between the ribs or at the base of the neck during breathing, indicating increased work of breathing.
🛡 Crucial Precautions
- Always Use a Spacer: Ensure the spacer is correctly assembled and attached to the MDI before each use, especially for young children.
- Shake Inhaler Well: Shake the MDI vigorously for 5-10 seconds before each puff to ensure the medication is evenly mixed.
- Prime New Inhalers: If the inhaler is new or hasn't been used for several days, prime it by spraying a few puffs into the air away from the face. Refer to specific product instructions.
- Check Expiration Date: Always verify the expiration date on the MDI canister and discard expired medication.
- Monitor Doses Remaining: Keep track of the number of doses used or use a dose counter if available to ensure the inhaler is replaced before it runs out.
- Clean Spacer Regularly: Follow manufacturer guidelines for cleaning the spacer, typically once a week with warm, soapy water, allowing it to air dry completely.
🍽 Dietary Directions & Restrictions
- Rinse Mouth After Steroid Inhalers: After using an MDI containing corticosteroids, have the child rinse their mouth thoroughly with water and spit it out to prevent oral thrush (yeast infection).
- Hydration: Encourage adequate fluid intake, especially during respiratory illness, as good hydration can help thin mucus and make it easier to clear airways.
- Avoid Known Triggers: For children with asthma, identify and avoid any food allergens or sensitivities that may exacerbate respiratory symptoms.
- No Specific Food Restrictions: Generally, there are no direct dietary restrictions associated with the use of metered dose inhalers themselves.
⚠️ Attendant Guidelines
- Supervise Young Children: Always supervise children during MDI administration to ensure correct technique and full dose delivery.
- Follow Prescribed Dosage: Administer only the number of puffs and frequency prescribed by the healthcare provider. Do not alter doses without medical advice.
- Recognize Worsening Symptoms: Be aware of signs that your child's respiratory symptoms are worsening (e.g., increased wheezing, difficulty speaking, blue lips) and know when to seek emergency care.
- Store Properly: Store the MDI at room temperature, away from extreme heat, cold, or direct sunlight, and out of reach of children.
- Do Not Puncture Canister: Never puncture or burn the inhaler canister, even if it appears empty.
🩺 Physician's Perspective
- Adherence is Key: Emphasize consistent use of controller medications as prescribed, even when the child feels well, to prevent exacerbations.
- Asthma Action Plan: Work with families to develop and understand a personalized asthma action plan, outlining daily management and steps for worsening symptoms.
- Regular Technique Review: Advise parents to demonstrate their child's MDI technique during clinic visits to ensure proper use and address any errors.
- Monitor for Side Effects: Educate parents on potential side effects (e.g., shakiness with bronchodilators, oral thrush with steroids) and when to report them.
- Environmental Control: Discuss the importance of identifying and minimizing exposure to environmental triggers (e.g., smoke, dust mites, pet dander).
🎓 Academic & Nursing Corner
- Patient Education Priority: Nurses play a critical role in educating parents/caregivers on correct MDI and spacer technique through demonstration and return demonstration.
- Assess Respiratory Status: Prioritize assessment of respiratory rate, effort, breath sounds, and oxygen saturation before and after MDI administration.
- Spacer Selection: Understand the different types of spacers (e.g., valved holding chambers with masks for infants/toddlers, mouthpieces for older children) and their appropriate use.
- Documentation: Accurately document medication administration, dosage, technique, and the child's response to treatment.
- Identify Barriers to Adherence: Assess for factors that may hinder adherence, such as cost, understanding, or perceived side effects, and provide appropriate resources or interventions.
🔬 Clinical Reference Index
- Aerosol Delivery Physics: Understanding the principles of aerosol generation, particle size distribution, and lung deposition for optimal therapeutic effect.
- Propellant Systems: Familiarity with different propellant types (e.g., hydrofluoroalkane - HFA) and their environmental and clinical implications.
- Drug Classes: Knowledge of common drug classes delivered via MDI, including short-acting beta-agonists (SABAs), long-acting beta-agonists (LABAs), inhaled corticosteroids (ICS), and combination therapies.
- Flow-Dependent Devices: Recognition that MDIs are not flow-dependent like dry powder inhalers (DPIs), making them suitable for children with proper spacer use.
- Inspiratory Flow Rate: While not flow-dependent, a slow, deep inhalation is still crucial for optimal drug delivery into the lower airways when using an MDI with a spacer.