Figure 1From: Hydrogen ion concentration and coronary artery bypass graft surgery with and without cardiopulmonary bypass Changes in hydrogen ion concentration in patients undergoing on- and off-pump coronary artery bypass grafting surgery. Mean hydrogen ion concentration [H+] and 95% confidence intervals for patients undergoing on- and off-pump patients over time. Where pre-op: pre-operatively, post-grafting: following coronary artery bypass grafting and next-morning: approximately 0600 on the morning following surgery.Back to article page