Article Figures & Data
Figures
- Fig. 1.
Experimental setup for studying ventilator performance in pediatric noninvasive ventilation scenarios.
- Fig. 2.
Synchronization rates with 3 simulated body weights (10, 20, and 30 kg), 3 lung mechanics conditions (normal, obstructive, and restrictive), and 4 leak levels: baseline (BL) 2–3 L/min, L1 5–6 L/min, L2 9–10 L/min, and L3 19–20 L/min. Synchronization rate increased with body weight (P < .001). Synchronization rates were lower in the obstructive model than in the normal and the restrictive models (P < .001). As leak increased, synchronization rate decreased (P < .001). The bars show mean values.
- Fig. 3.
Types of asynchrony (auto-triggering, missed-triggering, and delayed cycling) as a percentage of the total simulated breaths. Premature cycling is not shown because it occurred only with the PB840 and in < 0.1% of simulated breaths. The bars show mean values.
- Fig. 4.
Percentage of simulated breaths that had auto-triggering, relative to body weight, lung mechanics scenario, and leak level (as in Fig. 3). Auto-triggering rate were not associated with body weight (P = .10). Auto-triggering was lower in the obstructive model than in the normal and restrictive models (P < .001). As leak increased, auto-triggering rate increased (P < .001). The bars show mean values.
- Fig. 5.
Percentage of simulated breaths that had miss-triggering, relative to body weight, lung mechanics scenario, and leak level (as in Fig. 3). Miss-triggering increased with decreased body weight (P < .001). Miss-triggering was higher in the obstructive model than in the normal and restrictive models (P < .001). Miss-triggering was not associated with leak level (P = .06). The bars show mean values.
Tables
Online data supplement
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