The physician has requested that you provide a patient with a reservoir device to use in conjunction with a metered dose inhaler (MDI).Given a choice,which type of device would you give the patient?

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Quizplus · Accepted Answer

Although the use of a spacer is preferred over no reservoir device at all,valved holding chambers can increase drug delivery,decrease oropharyngeal impaction,and help with coordination.Valves in the holding chamber act as a baffle reducing particle size,which reduces oropharyngeal impaction,and allow the patient to exhale without disrupting the aerosol inside the chamber.Valved holding chambers are superior to spacers.A traditional holding chamber has the advantage of a one-way valve compared with a spacer;it also has an inherent electrical charge that may affect drug delivery.Antistatic holding chambers reduce the electrostatic charge and can increase delivery of the aerosolized drug by 70%.

The Physician Has Requested That You Provide a Patient with a Reservoir