Masimo is now making fully available its RAS-45 acoustic respiration sensor that works with the company’s rainbow Acoustic Monitoring platform and that is compatible with both adult and pediatric patients.
It performs the same as the RAS-125c sensor, but being considerably smaller and featuring a more flexible adhesive, it is easier to put on and more comfortable to wear, particularly for children and adults with stubby necks.
In a study comparing pediatric patient tolerance of sidestream capnography with a nasal cannula to respiration rate monitoring with an RAS-125c acoustic sensor, 15 out of 40 patients removed the cannula, while only one removed the acoustic sensor. In a study of 98 patients consciously sedated during upper gastrointestinal endoscopy, researchers found that RRa monitoring with the RAS-125c sensor more accurately assessed respiration rate than capnography using end-tidal carbon dioxide (EtCO2) measurement or impedance pneumography. RAS-45 maintains the same performance parameters, range, and accuracy specification as RAS-125c.