Table 2.

Description of perioperative mortality studies.

Authors and year of publication	Data Source and period studied	Time of CA occurrence	Exclusion	Patients (n)
Ruiz Neto & Amaral, 198613	Tertiary University Hospital Retrospective Medical Charts 1982–1984	OR	Cardiac Surgery	51,422
Cicarelli et al., 19986	Tertiary University Hospital Retrospective Medical Charts 1995	OR up to 24 h postoperatively	Cardiac Surgery	25,926
Braz et al., 19993	Tertiary University Hospital Retrospective Database 1988–1996	OR and PACU	–	58,553
Chan & Auler Jr, 20024	Tertiary University Hospital Retrospective Medical Charts 1998–1999	OR up to 24 h postoperatively	–	82,641
Braz et al., 20062	Tertiary University Hospital Prospective Database 1996–2005	OR and PACU	–	53,718
Sebbag et al., 201314	Tertiary University Hospital Prospective Database 2007	OR up to 24 h postoperatively	Cardiac Surgery	40,379
Pignaton et al., 20165	Tertiary University Hospital Retrospective Database 2005–2012	OR and PACU	–	55,002
Stefani et al., 20187	Quaternary University Hospital Retrospective Database 2012–2013	OR up to 48 h postoperatively	–	11,562

CA, cardiac arrest; OR, operating room; PACU, Post-anesthesia care unit.