Which statement accurately describes a dry powder inhaler (DPI)?

Which statement accurately describes a dry powder inhaler (DPI)?

• A. It does not require a puff; the patient breathes in to release the dose
• B. It does not require inhalation to release the dose
• C. It requires a spray to deliver the dose
• D. It must be used with a nebulizer

Answer: (A)

Dry powder inhalers deliver medicine only when the patient inhales. The device holds dry powder that is dispersed into the inhaled air by a quick, deep breath, so there’s no need to press a puff and no propellant spray is used. Because the dose comes out with sufficient inspiratory flow, proper technique is essential for effective delivery. They don’t require a nebulizer, and a spray or propellant isn’t involved. If the inhalation is too shallow or the device isn’t loaded correctly, the powder may not reach the lungs.

Dry powder inhalers deliver medicine only when the patient inhales. The device holds dry powder that is dispersed into the inhaled air by a quick, deep breath, so there’s no need to press a puff and no propellant spray is used. Because the dose comes out with sufficient inspiratory flow, proper technique is essential for effective delivery. They don’t require a nebulizer, and a spray or propellant isn’t involved. If the inhalation is too shallow or the device isn’t loaded correctly, the powder may not reach the lungs.