Welch Allyn Connex Integrated Wall System - User Manual - Manual (Page 95)

PI is a relative reading of pulse strength at the monitoring site. PI is a numerical value that
indicates the strength of the IR (infrared) signal returning from the monitoring site. PI display
ranges from .02 percent (very weak pulse strength) to 20 percent (very strong pulse strength). PI is
a relative number and varies between monitoring sites and from patient to patient, as physiological
conditions vary.
During sensor placement, the PI can be used to evaluate the appropriateness of an application
site, looking for the site with the highest PI number. Placing the sensor at the site with the
strongest pulse amplitude (highest PI number) improves performance during motion. Monitor the
trend of the PI for changes in physiological conditions.
SatSeconds™ alarm management
The SatSeconds feature is an SpO2 alarm management system available only with monitors that
are equipped with Nellcor OxiMax Technology.
The SatSeconds feature is the product of the time and magnitude that a patient falls outside of the
SpO2 alarm limits. For example, three points below the alarm limit for 10 seconds equals 30
SatSeconds. An alarm is triggered only when a desaturation event reaches the SatSeconds limit.
The SatSeconds feature is clinician controlled and can be set to 0, 10, 25, 50, or 100 SatSeconds. If
a desaturation event resolves on its own within the preset time, the clock will automatically reset
and the monitor will not alarm.
Note The SatSeconds feature has a built-in safety protocol that sounds an alarm
whenever three SpO2 violations of any amount or duration occur within a 1-minute
period.
SpO2 waveform view
The waveform view shows the real-time SpO2 plethysmograph waveform. You can select the
waveform sweep speed in Advanced settings.
Measure SpO2 and pulse rate
WARNING Inaccurate measurement risk. Use only Masimo Rainbow SET sensors
and accessories on Masimo-equipped monitors.
Directions for use Patient monitoring 89