Medical & biological engineering & computing
-
Med Biol Eng Comput · Feb 2020
How to ventilate preterm infants with lung compliance close to circuit compliance: real-time simulations on an infant hybrid respiratory simulator.
Circuit compliance close to lung compliance can create serious problems in effective and safe mechanical ventilation of preterm infants. We considered what ventilation technique is the most beneficial in this case. A hybrid (numerical-physical) simulator of infant respiratory system mechanics, the Bennett Ventilator and NICO apparatus were used to simulate pressure-controlled ventilation (PC) and volume-controlled ventilation with constant flow (VCVCF) and descending flow (VCVDF), under permissive hypercapnia (PHC) (6 ml kg-1) and normocapnia (SV) (8 ml kg-1) conditions. ⋯ The most beneficial ventilation technique appeared to be PC ventilation with the PHC strategy, with lower RR (36 min-1). Graphical abstract The effectiveness of an infant ventilation depending on circuit compliance to lung compliance ratio (Cv CL-1) and inspiration time (Ti). VV, VT, tidal volume set on the ventilator and delivered to patient, respectively.