Table 3.

Clinical practice guidelines.

Red blood cell transfusion
Year	Society	Recommendations	Reference
1988	NIH Consensus Conference	< 7 g/dl (acute)	JAMA 1988;260:2700 [71]
1992	Am Coll Physicians (ACP)	No number	Ann Int Med 1992;116:393–402 [72]
1996/2006	AmerSocAnesth (ASA)	< 6 g/dl (acute) No number	Anesth 1996;84:732–747 [73] Anesth 2006;105:198–208 [74]
1997/1998	Can Med Assoc (CMA)	No number	Can Med Assoc J 1997;156: S1–24 [60] J Emerg Med 1998;16:129–31 [75]
1998	Coll Amer Path (CAP)	6 g/dl (acute)	Arch Path Lab Med 1998;122:130–8 [76]
2001/2012	Br Com Stand Haematol	No number 7–8 g/dla	Br J Haematol 2001;113:24–31 [77] http://www.bcshguidelines.com/documents/BCSH_Blood_Admin_-_addendum_August_2012.pdf[78]
2001	Australasian Soc Blood Trans	7 g/dl	http://www.nhmrc.health.gov.au[79]
2007/2011	Soc Thor Surg (STS) SocCardvascAnesth (CVA)	7 g/dl or 8 g/dla	Ann ThoracSurg 2007;83:S27–86 [80] Ann ThoracSurg 2011;91:944–82 [81]
2009	ACCM SCCM	7 g/dl 7 g/dl	Crit Care Med 2009;37:3124–57 [82] J Trauma 2009;67:1439–42 [83]
2011	SABM	8 g/dl	Trans Med Rev 2011;232–246 [84]
2012	National Blood Authority, Australia	No number	http://www.nba.gov.au/guidelines/review.html[86]
2012	AABB	7–8 g/dl or 8 g/dlb	Ann Int Med 2012;157:49–58 [22]
2012	KDIGOc	No number	Kid Int 2012;2:311–316 [85]
2012	National Cancer Center Network (NCCN)	7–9 g/dl	JNCCN 2012;10:628–53 [5]

From Goodnough LT. Lancet 2013;391:1845–54 [3].

^aFor patients with acute blood loss.

^bFor patients with symptoms of end-organ ischemia.