IRVINE, Calif., April 19, 2011 /PRNewswire/ — Masimo (NASDAQ:

MASI) announced today that it will release first quarter
financial results for the period ended April 2, 2011, after the
market closes on May 3, 2011.

A conference call to review the results will begin at 1:30 p.m.
PT (4:30 p.m. ET) and will be hosted by Joe Kiani, Chairman and
Chief Executive Officer, and Mark P. de Raad, Executive Vice
President and Chief Financial Officer.

A live webcast of the conference call will be available online
from the investor relations page of the company’s corporate website
at www.masimo.com.  The dial-in
numbers are (888) 520-7182 for domestic callers and +1 (706)
758-3929 for international callers.  The reservation code for
both dial-in numbers is 58223656.  After the live webcast, the
call will be available on Masimo’s website through June 3, 2011.
 In addition, a telephonic replay of the call will be
available through May 17, 2011.  The replay dial-in numbers
are (800) 642-1687 for domestic callers and +1 (706) 645-9291 for
international callers.  Please use reservation code
58223656.

About MasimoMasimo (NASDAQ:
MASI) is the global leader in innovative noninvasive monitoring
technologies that significantly improve patient care-helping solve
“unsolvable” problems.  In 1995, the company debuted
Measure-Through Motion and Low Perfusion pulse oximetry, known as
Masimo SET®, which virtually eliminated false alarms and
increased pulse oximetry’s ability to detect life-threatening
events.  More than 100 independent and objective studies
demonstrate Masimo SET provides the most reliable SpO2 and pulse
rate measurements even under the most challenging clinical
conditions, in

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