Table 1. Studies with data about CPB and PMV.

Abbreviations: CPB, cardiopulmonary bypass; CPBT, cardiopulmonary bypass time; MECC, minimized extracorporeal circulation; MV, mechanical ventilation; PMV, postoperative mechanical ventilation.

Study name	Reason for grouping	Number of patients	CPBT mean	MV hours
Covino 2001 [7]		16	78	19.11
Erkut 2013 [8]	Beating heart	56	95	41
Erkut 2013 [8]	Non-beating heart	65	84	33
Malik 2006 [9]		25	103.4	15.84
Medved 2008 [10]		30	55	14
Møller 2010 [11]		163	64.6	9
Muñoz 2000 [12]	Survivors	142	88.5	48
Muñoz 2000 [12]	Survivors with complications	18	127	223
Muñoz 2000 [12]	Deaths	14	173.5	408
Remadi 2006 [13]	Conventional	200	65.4	9.7
Remadi 2006 [13]	Mini Jostra system	200	63.4	8.8
Schöttler 2007 [14]	Conventional	30	100.7	20.7
Schöttler 2007 [14]	MECC system	30	103.3	18
Total		989