Severe diaphragmatic dysfunction with preserved activity of accessory respiratory muscles in a critically ill child: a case report of failure of neurally adjusted ventilatory assist (NAVA) and successful support with pressure support ventilation (PSV)

Table 1 Pressure support ventilation and NAVA

	Ventilation	0’	3’	6’	9’	12’	15’
Vt [ml]	PS	150	180	165	170	170	180
Vt [ml]	NAVA	80	88	110	95	100	86
RR [bpm]	PS	16	18	17	16	16	17
RR [bpm]	NAVA	15	22	20	22	24	24
MV [l/min]	PS	2.7	2.7	2.7	2.8	2.8	2.5
MV [l/min]	NAVA	1.2	2.4	3	3.2	2.5	2.8
MAP [cmH₂O]	PS	12	12	12	12	12	12
MAP [cmH₂O]	NAVA	8	7	10	10	7	11
EtCO₂ [mmHg]	PS	47	47	48	47	47	48
EtCO₂ [mmHg]	NAVA	49	53	52	53	55	55
EAdi max [μV]	PS	1.6	1.7	2.1	1.1	1.3	1.5
EAdi max [μV]	NAVA	1.7	1.8	2	1.7	1.2	1.5
EAdi min [μV]	PS	0.9	0.4	0.4	0.3	0.3	0.4
EAdi min [μV]	NAVA	0.6	0.2	0.5	0.4	0.5	0.2
HR [bpm]	PS	130	129	123	123	121	117
HR [bpm]	NAVA	114	123	125	126	123	122
SBP/DBP [mmHg]	PS	140/90					140/96
SBP/DBP [mmHg]	NAVA	110/99					150/110

Definition of abbreviations: PSV pressure support ventilation, NAVA neurally adjusted ventilatory assistance, V_T tidal volume, RR respiratory rate, MV minute ventilation, MAP mean airway pressure, E_TCO₂ end tidal carbon dioxide, EAdi electrical activity of the diaphragm, HR heart rate, SBP/DBP systolic blood pressure/diastolic blood pressure

ISSN: 1471-2431