Ohmeda TruSignal™ Enhanced SpO2

The combination of a weak signal (low perfusion) with a noisy signal (clinical motion) is the most difficult challenge of any oximeter. Ohmeda TruSignal offers improved performance, especially during challenging conditions of patient clinical motion and low perfusion.

With ultra-low-noise technology, Ohmeda TruSignal selects the appropriate clinically-developed algorithm to compensate for weak or motion-induced signals. The result: reliable saturation readings.

Ohmeda TruSignal Enhanced SpO2 filters out clinical motion interference, locks onto weak, low perfusion signals and calculates one precise value.

More About Ohmeda TruSignal Enhanced SpO2

GE Healthcare studied patient motion with the intention of adding clinical relevance to the simulated patient motions used in testing pulse oximetry performance. The motion characterization study1 focused on the types, incidence, duration, and severity of motion as it occurs in the clinical setting. Following are some key findings:

  • Clinical motion patterns are irregular in nature, not uniform or continuous
  • The most difficult motion for oximetry to track is not necessarily when physical movement is greatest
  • Infant and adult populations exhibit various "types" of motion affecting oximetry readings differently
  • The most frequently observed motions affecting oximetry are composed of clenching/pressing/rubbing and extending/flexing/kicking

The GE Healthcare motion characterization study showed that the traditional finger-tapping method used in many laboratory studies is not an accurate simulation for actual clinical patient motion.

1 Anesthesia and Analgesia 2002;94(1 Suppl):S54-61