Automatic detection of AutoPEEP during controlled mechanical ventilation

Table 1 AutoPEEP detection results provided by the proposed detectors on emulated flow data

	Parameters		True	N. of	Det. by SNT ^c			Det. by Sequential SNT ^c
Id	Ventilator ^a	Lung model ^b	Label	breaths	P	N	Label	P	N	Label
1	PEP=0, Vt=500, f=15, P=0, I:E=1:2	C=80, R=5	N	21	0	21	N	0	21	N
2	PEP=0, Vt=500, f=15, P=0, I:E=1:2	C=30, R=5	N	20	0	20	N	0	20	N
3	PEP=0, Vt=500, f=25, P=0, I:E=1:2	C=80, R=5	P	33	33	0	P	33	0	P
4	PEP=0, Vt=500, f=25, P=0, I:E=1:1	C=80, R=5	P	34	34	0	P	34	0	P
5	PEP=0, Vt=300, f=20, P=0, I:E=1:2	C=80, R=5	N	27	0	27	N	0	27	N
6	PEP=0, Vt=500, f=12, P=0, I:E=1:2	C=80, R=5	N	16	0	16	N	0	16	N
7	PEP=0, Vt=500, f=20, P=15, I:E=1:3	C=80, R=5	N	27	0	27	N	0	27	N
8	PEP=5, Vt=500, f=20, P=0, I:E=1:3	C=80, R=5	N	27	0	27	N	0	27	N
9	PEP=5, Vt=500, f=20, P=0, I:E=1:2	C=120, R=10	P	27	27	0	P	27	0	P
10	PEP=0, Vt=700, f=20, P=0, I:E=1:2	C=120, R=10	P	27	27	0	P	27	0	P
11	PEP=0, Vt=700, f=20, P=0, I:E=1:6	C=120, R=10	P	24	24	0	P	24	0	P
12	PEP=0, Vt=700, f=20, P=0, I:E=1:1	C=120, R=10	P	27	27	0	P	27	0	P
13	PEP=0, Vt=700, f=20, P=0, I:E=1:2	C=140, R=25	P	13	13	0	P	13	0	P

^aVentilator parameters include: Positive Expiratory Pressure PEP [cmH ₂ O], air volume Vt [ml], frequency f [breaths/min], pause time P [%], Inspiratory to expiratory time ratio I:E.
^bLung model parameters include: compliance C [ml/cmH ₂ O] and resistance R [cmH ₂ O/l/s].
^cFor each of the experiments, the AutoPEEP detection provides: the number of breaths detected as AutoPEEP (denoted as P for Positive), the number of breaths detected as NON-AutoPEEP (denoted as N for Negative) and the overall label for the considered setting.

ISSN: 1475-925X