Respiratory support by neurally adjusted ventilatory assist (NAVA) in severe RSV-related bronchiolitis: a case series report

Table 1 Ventilatory parameters (case 1)

	Before NAVA	Twelve hours after the start of NAVA
Ventilation mode	SIMV	NAVA
Peak inspiratory pressure (cm H₂O)	30	(10)*
PEEP (cm H₂O)	5	4
Mean pressure (cm H₂O)	10	6
Tidal volume (ml/kg)	5	(4)*
Minute volume (ml/kg/min)	0.6	0.7
Respiratory rate (breaths/min)	30	(50)*
FiO₂	50%	21%
SpO₂	91%	92%
Edi max	< 5	(10)*
NAVA level	-	1
pH	7.38	7.41
PCO₂, mmHg [kPa]	48 [6.4]	43 [5.7]

Data in bold are prescribed settings. Other data are measured parameters that depend on the ventilatory settings and the respiratory status of the child.
* Data expressed in parentheses represent measurements that were very variable over time, and hence an estimate of the measured parameter is provided [see Figures 1 and 2].
Abbreviations: SIMV, synchronized intermittent mandatory ventilation; NAVA, neurally adjusted ventilatory assist; PEEP, positive end-expiratory pressure; FiO₂, fraction of inspired oxygen; Edi, electrical activity of the diaphragm.

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