What is t-High?: APRV terminology

• t-High is the set time for the upper CPAP phase (p-High).
• Allows for sustained recruitment allowing for improved gas exchange by increasing alveolar surface area. 

The above image shows the t-High Phase in a Hamilton Galileo ventilator. 

t-High setting on the Evita XL


t-High setting on the Servo-I, Bi-Vent mode.

PB 840 Bi-Level mode "T-H" is the t-High setting.