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Figure 3 Individual MBF in each of the four regions in the dual chamber (DDD) group measured at pacing rate 60 beats/min (MBF-60) and 90 beats/min (MBF-90) and during temporary pacing in the AAI mode, 60 beats/min (MBF [DDD
AAI]-60). LAD, LCX and RCA indicate the three major coronary vascular territories. For statistical comparisons see text and Table 2. AAI = single chamber atrial pacing; LAD = left anterior descending artery; LCX = left circumflex artery; MBF = myocardial blood flow; RCA = right coronary artery.