VITAMIN D UPDATE: Vitamin D Levels Predict Outcomes In Coronary Bypass Surgery. “Low vitamin D levels before coronary artery bypass graft (CABG) surgery predicted worse outcomes after 3 months, results of a retrospective study showed. Patients with vitamin D deficiency or insufficiency, defined by levels of 25(OH)D, had significantly higher 90-day mortality after CABG than those who had sufficient levels of the vitamin (OR 5.24 and OR 4.61, respectively), Takuhiro Moromizato, MD, of Brigham and Women’s Hospital in Boston, and colleagues reported during an oral session at the Society of Critical Care Medicine meeting.”