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Pulse rate was measured before interventional visit and monitored every 30 minutes after administration of propranolol. Pulse reate decreased significantly (p<0.0001) from 81 ± 12 bpm (baseline) to 67 ± 7.6 bpm (after propranolol) (A). The correlation between the change in heart rate (ΔHR) and the change in REE (ΔREE) was r=0.41, R2 = 0.17 and p=0.10 (B).
