Formulas commonly used in the Pediatric/Neonatal Population

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Presentation transcript:

Formulas commonly used in the Pediatric/Neonatal Population By Fiona Campbell BS, RRT-NPS

Total Cycle Time (TCT) and Rate Purpose: To determine a given rate with a given Ti Order “Rate 30, PIP 26, PEEP 4, Ti 0.3, FiO2 32%” Many neonatal ventilators will not have a “rate” and must be determined First find TCT: where TCT=60 (sec/min)÷ desired rate TCT = 60/30 = 2 sec, by subtracting the Ti, what remains is Te. Te = TCT – Ti = 2-0.3 = 1.7 sec

Mean Airway Pressure (Paw) Average pressure above baseline pressure, determinate of oxygenation Paw = (PIP – PEEP) x Ti + PEEP Ti + Te or TCT

Mean Airway Pressure (MAP) X FiO2 Oxygen Index (OI) Determines the mortality of the infant; a more sensitive indicator of severity of pulmonary illness An OI of 25 indicates HFOV and/or iNO, an OI of > 40 is an indication for ECMO. OI = Mean Airway Pressure (MAP) X FiO2 X 100 PaO2