News | April 09, 2007

Masimo's Acoustic Respiratory Monitoring Technology

April 10, 2007 - Masimo, the inventor of Pulse CO-Oximetry and Read-Through Motion and Low Perfusion pulse oximetry, reported that three new independent studies, including one presented the recent International Anesthesiology Research Society (IARS) Clinical & Scientific Congress in Orlando, concluded that Masimo Acoustic Respiratory Monitoring technology (ARM) is "at least as accurate as capnometry" and "significantly more reliable" for monitoring respiration in spontaneously breathing patients.

Respiration is one of the five vital signs, but clinicians have long looked for a continuous and noninvasive method of monitoring respiration that is clinically accurate, easy to use and well tolerated by patients. Current methods of respiration monitoring, including impedance pneumography with ECG and end-tidal CO2 with capnometry, each have limitations that make them unreliable in certain clinical situations.

In the study released at the recent IARS, conducted by M. R. Macknet, MD and a team of researchers at Loma Linda University's Department of Anesthesiology, fifteen pediatric PACU patients were monitored with Masimo's ARM technology consisting of an adhesive bioacoustic sensor applied to the patient's neck and connected to a breathing frequency monitor prototype. In addition, a nasal cannula was placed, secured with tape, and connected to a capnometer. The study showed that "premature cannula dislodgement occurred in 14 patients" in less that 20 minutes, while "in no patient was the bioacoustic sensor dislodged before the end of the stay in the PACU."(1)

"This data shows the relative ease and high incidence of capnometer cannula dislodgement compared to the new bioacoustic sensor," the researchers commented. "In clinical settings where continuous and reliable monitoring of spontaneous respiration is important, the new bioacoustic sensor provides significantly greater patient connection time, which should lead to significantly more reliable monitoring of respiration rate."

In two studies released in January at the 2007 Society for Technology in Anesthesiology annual meeting, researchers monitored ten postoperative adult ICU and six pediatric PACU patients in separate studies with Masimo's ARM technology as well as a nasal cannula connected to a capnometer. They concluded that Masimo's new bioacoustic respiratory sensor "demonstrates accuracy for respiratory rate monitoring as good as capnometry" and that the device "offers multiple benefits over existing devices and has a potential to improve monitoring in a general care setting."(2),(3)

Joe E. Kiani, Founder & CEO of Masimo stated, "We are happy to see that these initial independent studies reinforce our belief that Masimo Acoustic Respiratory Monitoring has the potential to be a breakthrough continuous and noninvasive respiratory rate monitoring technology that is accurate, reliable and easy to use. Similar to Masimo SET Read-Through Motion and Low Perfusion pulse oximetry technology, we recognized that one of the other five primary vital signs had no available method of giving reliable results and decided to see if we could come up with a better solution. We are encouraged that the initial clinical research indicates that the non-obtrusive nature of the Masimo ARM technology application may help overcome the problems of conventional respiratory rate monitors without compromising measurement accuracy."

Masimo expects to combine its Masimo Rainbow SET Read-Through Motion and Low Perfusion pulse oximetry with Masimo ARM technology as part of a general floor monitoring solution designed to increase patient safety and heed the growing call to find ways to reduce unnecessary deaths on general care floors. The combination of these two technologies will give hospitals a continuous and noninvasive way to accurately monitor a patient's oxygenation and ventilation during patient-controlled analgesia, consistent with the new recommendations from the Anesthesia Patient Safety Foundation (APSF). In addition, the combination of Masimo Rainbow SET pulse oximetry and Masimo ARM should assist hospitals in being compliant with new American Society of Anesthesia (ASA) guidelines for management of patients at risk of obstructive sleep apnea (OSA) by providing an accurate and reliable combination of oxygen saturation and respiration rate monitoring.

The technology is currently undergoing additional clinical and engineering testing and is expected to be introduced at Alpha Sites in late 2007. For more information, visit www.masimo.com

Related Content

News | Image Guided Radiation Therapy (IGRT) | July 31, 2017
Elekta’s magnetic resonance radiation therapy (MR/RT) system will be the subject of 21 abstracts at the 59th American...
News | Image Guided Radiation Therapy (IGRT) | July 13, 2017
Elekta and Sunnybrook Health Sciences Centre have initiated installation of Elekta’s MR-linac, an investigational...
First New York Metropolitan Hospital Treats Cancer Patients With Accuray Radixact System
News | Image Guided Radiation Therapy (IGRT) | July 03, 2017
Accuray Inc. and Montefiore Einstein Center for Cancer Care (MECCC), part of the Montefiore Health System (MHS),...
IUCT Oncopole Installs First Radixact Radiotherapy System in France
News | Intensity Modulated Radiation Therapy (IMRT) | June 20, 2017
Accuray Inc. announced that the University Cancer Institute of Toulouse Oncopole (IUCT Oncopole) in Toulouse, France,...
Henry Ford Cancer Institute First in World to Install Viewray MRIdian Linac
News | Image Guided Radiation Therapy (IGRT) | June 19, 2017
The Henry Ford Cancer Institute is the first in Michigan – and first in the world – to offer patients advanced...
News | Image Guided Radiation Therapy (IGRT) | May 24, 2017
The University Medical Centre (UMC) Utrecht in the Netherlands recently treated the first patient as part of a clinical...
Mevion and medPhoton Bring Advanced Cone Beam CT Imaging to Proton Therapy
News | Proton Therapy | May 04, 2017
Mevion Medical Systems announced a strategic agreement with medPhoton GmbH to integrate ImagingRing, an innovative cone...
ViewRay, MRIdian Linac system, FDA 510k approval, MRI-guided radiation therapy
Technology | Image Guided Radiation Therapy (IGRT) | February 27, 2017
February 27, 2017 — ViewRay Inc. announced that the company received 510(k) clearance from the U.S.
Overlay Init