Pressure-controlled inverse ratio ventilation as a rescue therapy for severe acute respiratory distress syndrome

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Table 1 Patient characteristics

Patient	Age	Sex	Body weight (kg)	APACHE II at ICU admission	Cause of ARDS	COPD	Reason of IRV	Ventilator mode before IRV	Murray score before IRV	Additional pulmonary protection
1	79	F	49	36	Septic shock/ACS	−	Hypoxemia/acidemia	APRV	NA	Decompression laparotomy
2	69	M	38	26	Sepsis	+	Hypoxemia	ACV	3.25
3	62	M	65	23	Pneumonia/sepsis	−	hypoxemia	ACV	3.5
4	81	M	60	28	Pneumonia	−	Hypoxemia	APRV	NA
5	77	M	58	46	Pneumonia	−	Hypoxemia/acidemia	ACV	3.5
6	69	M	43	39	Septic shock/liver abscess	−	Hypoxemia	ACV	3.0
7	69	F	47	24	Septic shock	−	Hypoxemia	ACV	4.0
8	70	M	60	14	Sepsis	+	Hypoxemia/acidemia	ACV	3.0
9	62	M	60	40	Septic shock	−	Hypoxemia/acidemia	ACV	2.5
10	77	F	51	31	Septic shock	−	Hypoxemia/acidemia	APRV	NA	Prone position
11	68	M	48	26	Sepsis	−	Hypoxemia/acidemia	APRV	NA
12	57	M	81	26	Pneumonia/septic shock	−	Hypoxemia/acidemia	APRV	NA	Prone position
13	72	M	53	23	Pneumonia/sepsis	−	Hypoxemia/acidemia	ACV	2.75

APACHE II acute physiological and chronic health evaluation II score, ARDS acute respiratory distress syndrome, ICU intensive care unit, COPD chronic obstructive pulmonary disease, IRV inverse ratio ventilation, ACS abdominal compartment syndrome, ACV assist-control ventilation, APRV airway pressure release ventilation, NA not available