Measurement of tidal volume of small infants ventilated with Servo 900C (Siemens Elema)

Abstract

A new and simple method was established to measure the tidal volume of preterm and term neonates ventilated with a Servo 900C ventilator on pressure control pattern. The expiratory tidal volume (Vte) measured by the ventilator consists of the true tidal volume (Vt) and the compressible volume (Vc) in the patient circuit. If Vte is correct and Vc is known, Vt is calculated as Vte-Vc.