Off-pump coronary artery bypass grafting: Misperceptions and misconceptions

Table 1 Comparison of number of grafts performed and completeness of revacsularization off-pump and on-pump in randomized controlled trials

Ref.	No. of grafts off-pump CABG	No. of grafts on-pump CABG	P	Completeness of revascularization
Coronary trial, Lamy et al[2] 2012	3.0	3.2	< 0.001	Yes1
GOPCABE trial, Diegeler et al[3] 2013	2.7	2.8	< 0.001	No
ROOBY trial, Shroyer et al[4] 2009	2.9	3.0	0.002	No
DOORS trial, Houlind et al[5] 2012	2.9	3.1	0.007	Yes
On-off study, Lemma et al[6] 2012	3.0	3.3	0.001	Yes
The Best Bypass Surgery trial, Møller et al[7] 2010	3.2	3.3	0.11	Yes
SMART trial, Puskas et al[9] 2003	3.39	3.4	NS	Yes
BHACAS trial, Angelini et al[10] 2002	2.23	2.31	NS	Yes

¹Rate of incomplete revascularization (as assessed by the surgeon at the time of surgery) was higher, though the P value for the difference was only marginally significant (11.8% vs 10.0%, P = 0.05). NS: Not significant; BHACAS: Beating Heart Against Cardioplegic Arrest Studies; GOPCABE: German Off-Pump Coronary Artery Bypass Grafting in Elderly Patients; ROOBY: Randomized On/Off Bypass; DOORS: Danish On-pump vs Off-pump Randomization Study; SMART: Surgical Management of Arterial Revascularization Therapies; CABG: Coronary artery bypass grafting.