Mechanical ventilation and the total artificial heart: optimal ventilator trigger to avoid post-operative autocycling - a case series and literature review

Table 1 Case Series Data

Patient	Mode of ventilation	CVP	BMI	RR^actual/set with flow trigger	RR^actual/set with pressure trigger	TAH rate	PEEP
Autocycling group
1	ACV	20	27.5	37/24	26/26	101	5
2	SIMV + PS	21	28.7	38/6	10/10	123	5
3	SIMV + PS	22	39.7	16/12	18/18	115	6
4	SIMV + PS	20	25.9	37/12	12/12	131	5
5	SIMV + PS	19	23.6	27/12	12/12	115	16
Nonautocycling group
6	SIMV + PS	18	31.2		10/10	110	8
7	SIMV + PS	7	32.3	18/18	30/30	110	25
8	SIMV + PS	15	32.3	10/10		125	5
9	SIMV + PS	19	25.8	18/12	18/12	120	5
10	SIMV + PS	10	30.8	14/10	12/10	110	5

ACV refers to assist control ventilation; SIMV, synchronized intermittent mechanical ventilation; PS, pressure support; CVP, central venous pressure; BMI, body mass index; RR, respiratory rate; TAH, total artificial heart; PEEP, positive end expiratory pressure.