Dartmouth-Hitchcock Medical Center Evaluation Findings Demonstrate Masimo Patient SafetyNet(TM) Delivers Improvements in Clinical Outcomes and Patient Safety on General C...( Early results show positive impacts ...),Health

Early results show positive impacts on safety, quality of care, clinician

efficiency and nursing satisfaction

IRVINE, Calif., May 28 /PRNewswire-FirstCall/ -- Dartmouth-Hitchcock Medical Center and Masimo (Nasdaq: MASI), the inventor of Pulse CO-Oximetry and Measure-Through-Motion-and-Low-Perfusion pulse oximetry, today announced that initial results of an ongoing clinical evaluation show Masimo Patient SafetyNet with Masimo Rainbow SET Pulse CO-Oximetry provides early warning detection of impending patient deterioration on the general care floor, which helped keep patients safer. Early findings showed a reduction in distress codes, rescue activations, and ICU transfers. Dartmouth-Hitchcock Medical Center (DHMC), the first hospital to deploy the Masimo Patient SafetyNet system, presented its evaluation data and findings to more than 1,500 clinicians at the 4th International Conference on Rapid Response Systems on May 8, 2008 in Toronto, Canada, and the National Patient Safety Foundation (NPSF) Annual Congress on May 15, 2008 in Nashville, TN.

George T. Blike, M.D., Medical Director, Patient Safety, DHMC, stated, "The data that we have gathered by continuously monitoring all patients on a post-surgical general care floor since beginning this evaluation in late 2007 confirms what we anticipated -- an improvement in prevention and intervention. The Masimo Patient SafetyNet system makes it possible for our clinicians to identify patient distress earlier -- preventing codes and rescues -- and initiate appropriate intervention more rapidly to improve patient outcomes, recoveries and clinician efficiencies. All of this contributes to a safer general care floor for our patients."

Findings presented by DHMC
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