Neonatal endotracheal flowmeter for tidal volume, airway pressure, and end-tidal gas.
We have designed a new endotracheal flowmeter to measure tidal volume, phasic and mean airway pressures, inspiratory time, and end-tidal PCO2 and PO2 in intubated infants. The flowmeter is light (11 g) and adds minimal dead space (1.0 ml) and resistance (2 cmH2O X 100 ml- X s) to the infant's airway. The volume signal (less than or equal to 10 ml) is linear to 7 Hz, and end-tidal gases can be measured at respiratory rates of 90 breaths/min. This flowmeter is particularly valuable for evaluation of rapid mechanical ventilation of very low birth weight infants.
Brady
J P
JP
Deming
D D
DD
McCann
E M
EM
D000403:Airway Resistance; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007442:Intubation, Intratracheal; D008176:Lung Volume Measurements / Q000295:instrumentation*; D012121:Respiration, Artificial; D012212:Rheology; D013990:Tidal Volume