Dr. Jan Shoenberger reviews 2 classic papers on the use of diltiazem for Afib in CHF patients. 1) Heywood JT, Graham B, Marais GE, et al. Effects of intravenous diltiazem on rapid atrial fibrillation accompanied by congestive heart failure. The American journal of cardiology. 1991 May 15;67(13):1150-2. 2) Goldenberg IF, Lewis WR, Dias VC, et al. Intravenous diltiazem for the treatment of patients with atrial fibrillation or flutter and moderate to severe congestive heart failure. The American journal of cardiology. 1994 Nov 1;74(9):884-9.