Speaker's Highlight

• Don Sin University of British Columbia, St. Paul Hospital (Canada)
  Kenneth R. Chapman Toronto General Hospital Research Institute (Canada)
• Parameswaran Nair McMaster University (Canada)
  Carolyn Calfee UCSF (U.S.A.)
• Gregory P. Downey University of Colorado School of Medicine (U.S.A.)
  David A. Schwartz University of Colorado School of Medicine (U.S.A.)
• Neil Schluger Tuberculosis Control Branch, California Department of Public Health (U.S.A.)
  Nick Kim Critical Care & Sleep Medicine, University of California San Diego (U.S.A.)
• Nicola Hananiah Baylor College of Medicine (U.S.A.)
  Jae-Joon Yim Seoul National University College of Medicine (Republic of Korea)
• Koichiro Asano Tokai University School of Medicine (Japan)
  Diahn-Warng Perng Taipei Veterans General Hospital (Taiwan)
• Konstantinos Kostikas University of Ioannina (Greece)
  Karin Klooster University Medical Center Groningen (Kingdom of the Netherlands)

• Optimizing Inhaler Technique for Better Asthma Control

  Asthma treatment depends on more than selecting the right medicine. The medication must reach the lower airways in an adequate dose, and inhaler technique has a major influence on whether that happens. A poorly used device can leave symptoms uncontrolled even when the prescription itself is appropriate.

  Correct technique supports better symptom relief, fewer nighttime awakenings, improved exercise tolerance, and a lower risk of asthma attacks. It also helps patients avoid increasing medication doses when the real problem is delivery rather than inadequate treatment.

  Every inhaler type has its own breathing pattern, loading process, and coordination requirements. Technique should therefore be demonstrated, practiced, and checked regularly rather than explained only once at the time of prescribing.

  Why Technique Affects Asthma Control

  Metered-dose inhalers release medication in a quick spray. The patient must begin a slow, deep inhalation at the same moment as the dose is released. If the inhalation is too fast or the timing is missed, much of the medicine may remain in the mouth or throat.

  Dry-powder inhalers work differently. They rely on a strong, rapid inhalation to draw the powder into the lungs. A patient with severe airflow limitation, weakness, or poor inspiratory effort may struggle to generate enough force for consistent delivery.

  Common signs of ineffective inhaler use include repeated coughing after a dose, little improvement in symptoms, frequent rescue inhaler use, and medication visible around the mouth. These signs warrant a technique review before treatment is escalated.

  Match the Device to the Patient

  Device selection should reflect age, dexterity, coordination, cognitive ability, inspiratory strength, and personal preference. A patient who cannot coordinate a pressurized inhaler with a breath may benefit from a spacer, a breath-actuated device, or another inhaler format.

  Spacers and valved holding chambers make pressurized metered-dose inhalers easier to use by slowing the aerosol and reducing the need for perfect hand-breath coordination. They can also decrease medication deposition in the mouth and throat. The chamber should be cleaned according to the manufacturer’s directions and allowed to air-dry when appropriate.

  Children, older adults, and people with arthritis may need special attention. Large dose counters, easy-grip devices, and simple preparation steps can improve adherence. The most sophisticated inhaler is not necessarily the best choice if the patient cannot use it reliably.

  Core Steps for Reliable Inhaler Use

  For a pressurized metered-dose inhaler, remove the cap, check the mouthpiece, and shake the device if required. Sit or stand upright, breathe out away from the inhaler, seal the lips around the mouthpiece, and begin a slow inhalation while pressing the canister once. Continue breathing in deeply, then hold the breath for about 10 seconds if comfortable.

  For a dry-powder inhaler, prepare the dose exactly as directed, breathe out away from the device, and inhale quickly and deeply through the mouthpiece. Do not exhale into the inhaler, because moisture can affect the powder. Close or reset the device after use and keep it dry.

  Some controller medicines include inhaled corticosteroids. After using one, rinsing the mouth and spitting out the water can reduce the risk of oral thrush and hoarseness. Patients should follow the specific instructions for their device and medication, since loading and cleaning steps vary.

  Device Comparison and Practical Considerations

  The differences between inhaler categories can guide shared decision-making. A clinician, nurse, or pharmacist should observe the patient using the actual device rather than relying on a verbal description.

  Device type	Breathing pattern	Main challenge	Helpful support
  Pressurized metered-dose inhaler	Slow, deep inhalation with coordinated actuation	Timing the spray and breath	Spacer or valved holding chamber
  Dry-powder inhaler	Fast, deep inhalation	Generating sufficient inspiratory flow	Demonstration and flow assessment
  Soft-mist inhaler	Slow, steady inhalation	Coordinating dose release and inhalation	Repeated supervised practice
  Breath-actuated inhaler	Inhalation triggers the dose	Preparing the device correctly	Clear loading instructions
  Nebulizer	Tidal breathing through a mask or mouthpiece	Treatment time and equipment care	Cleaning routine and caregiver support

  The device should be checked whenever asthma control worsens, a prescription changes, or a patient reports difficulty. A resource such as this external health resource should never replace advice from a qualified respiratory professional; online information is most useful when its authorship, date, and medical references are transparent.

  Correct the Errors That Matter Most

  One frequent error is failing to exhale fully before inhaling the medication. Starting with partially filled lungs leaves less room for a deep medication-carrying breath. Another is inhaling too rapidly through a pressurized inhaler, which increases throat deposition and reduces lung delivery.

  Patients may also forget to hold their breath, take several doses without waiting when a pause is needed, or fail to prime and load the device correctly. Empty or nearly empty inhalers can create uncertainty, particularly when the device has no dose counter. Tracking remaining doses helps prevent treatment interruptions.

  Health professionals can use a simple “show me how” approach. Ask the patient to demonstrate the complete process without interruption, identify one or two priority errors, then ask for a repeat demonstration. Written instructions and demonstration videos can reinforce the lesson, but observation remains essential.

  Build Technique Into Daily Asthma Care

  Inhaler education works best when it becomes part of routine asthma management rather than a one-time conversation. Technique can be reviewed during primary care visits, pharmacy consultations, pulmonary assessments, and appointments after an exacerbation.

  Patients should store inhalers where they are easy to find, keep rescue and controller medicines clearly distinguished, and follow the prescribed schedule. A written asthma action plan can explain what to do when symptoms increase and when urgent medical care is needed.

  Practical Habits That Support Better Delivery

  • Ask a clinician or pharmacist to watch a full inhaler demonstration at least once or twice each year.
  • Use a spacer with a compatible pressurized inhaler when coordination is difficult or the clinician recommends it.
  • Check the dose counter regularly and replace the inhaler before it is empty.
  • Rinse and spit after inhaled corticosteroids unless a healthcare professional gives different instructions.
  • Keep a written action plan and seek urgent care for severe breathlessness, blue lips, confusion, or poor response to reliever medicine.

  Keep Technique Under Review

  Asthma control can change with age, pregnancy, illness, hand strength, lung function, and daily routines. A technique that worked well previously may become difficult after a device change or a decline in inspiratory capacity. Regular reassessment keeps treatment aligned with the patient’s current abilities.

  Better inhaler use begins with one supervised demonstration and improves through repetition. Arrange a technique check with a respiratory clinician, nurse, or pharmacist, bring every inhaler and spacer to the appointment, and practice the corrected steps until each dose can be taken calmly and consistently.

  Richard Russell Nuffield Department of Clinical Medicine, University of Oxford (United Kingdom)
• Mona Bafadhel King’s College London (United Kingdom)
  David Jackson Guy’s and St Thomas’ Hospital, King’s College London (United Kingdom)
• James Chalmers University of Dundee (United Kingdom)
  David Price University of Aberdeen (United Kingdom)