Peripheral Arterial Tone

The PAT signal is a form of pulse wave amplitude measured by incorporating both a unified pressure field and a specific isosbestic wavelength.

These features result in high signal quality which differentiate PAT technology from other traditional peripheral pulse measurement methods.

This was explained by increased sympathetic activity and the unique innervation of the finger's arterial bed by solely alpha-adrenergic receptors pathways.

Itamar developed unique probes with contiguous cuffs which are capable of applying a unified pressure to a finger, including its most distal tip.

Such arousals elicit generalized autonomic activation, which among other physiological changes, includes sympathetic nervous system-mediated peripheral vasoconstriction, and transient pulse rate elevation.