Neural Breathing Pattern and Patient-Ventilator Interaction During Neurally Adjusted Ventilatory Assist and Conventional Ventilation in Newborns

Objective: To compare neurally adjusted ventilatory assist and conventional ventilation on patient-ventilator interaction and neural breathing patterns, with a focus on central apnea in preterm infants. Design: Prospective, observational cross-over study of intubated and ventilated newborns. Data were collected while infants were successively ventilated with three different ventilator conditions (30 min each period): 1) synchronized intermittent mandatory ventilation (SIMV) combined with pressure support at the clinically prescribed, SIMV with baseline settings (SIMVBL), 2) neurally adjusted ventilatory assist, 3) same as SIMVBL, but with an adjustment of the inspiratory time of the mandatory breaths (SIMV with adjusted settings [SIMVADJ]) using feedback from the electrical activity of the diaphragm). Setting: Regional perinatal center neonatal ICU. Patients: Neonates admitted in the neonatal ICU requiring invasive mechanical ventilation. Measurements and Main Results: Twenty-three infants were studied, with median (range) gestational age at birth 27 weeks (24–41 wk), birth weight 780 g (490–3,610 g), and 7 days old (1–87 d old). Patient ventilator asynchrony, as quantified by the NeuroSync index, was lower during neurally adjusted ventilatory assist (18.3% ± 6.3%) compared with SIMVBL (46.5% ±11.7%; p
Source: Pediatric Critical Care Medicine - Category: Pediatrics Tags: Neonatal Intensive Care Source Type: research

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