You are a respiratory therapist working the floors and are g…
You are a respiratory therapist working the floors and are going to administer a pMDI treatment with a valve holding chamber for Mrs. Joseph. Mrs. Joseph has formed a tight seal around the mouthpiece of the valve holding chamber begins to inhale to receive her dose. During Mrs. Joseph’s inhalation, you hear a whistling sound coming from the Valve Holding Chamber. What does this whistling sound indicate?