Machine proximate nebulizer

A system for providing respiratory therapy to a patient comprising:

• a nebulizer comprising a mesh operable to aerosolize a medicament;
• and
• a mixing chamber having an inlet port, an outlet port, an aerosol port in fluid communication with the nebulizer, and a drainage port,
• the inlet port configured to receive a flow of breathing gas from a source of breathing gas,
• the outlet port having a first end and a second end, the first end of the outlet port extending into the mixing chamber, and the second end external to the mixing chamber and configured to interfit with a delivery tube for delivery of the flow of breathing gas to the patient,
• the mixing chamber configured to receive a flow of aerosol from the nebulizer via the aerosol port, entrain aerosol into the flow of breathing gas, and deliver the breathing gas entrained with aerosol to the outlet port,
• the mixing chamber configured to receive the aerosol in the settling volume and cause a first portion of the aerosol to coalesce into droplets in or on any of the settling volume and an inner wall of the mixing chamber surrounding the first end of the outlet port,
• the inner wall of the mixing chamber cap-being configured to direct rain-out resulting from the droplets toward the drainage port;
• and
• a recirculation tube adapted to return the rain-out to the nebulizer.