A 72-year-old man was referred for a contrast-enhanced multidetector coronary CT examination. A physician tried to place an angiocatheter (BD Insyte Autoguard Winged, 20G, 1.1x25 mm) into the right median basilic vein; however, the vein could not be punctured correctly because it was difficult to detect owing to the tortuosity of the patient’s vascular network. Therefore, the median cephalic vein was punctured. However, when the entire outer plastic tube was placed into the vein, the intravenous infusion failed to drop. When the outer plastic tube was pulled back by about 2 mm, the infusion was able to drop properly and the tube was fixed at that position. Before the infusion of contrast medium (CM), landiolol was injected through this catheter to reduce the patient’s heart rate (HR). When the physician injected landiolol by hand, no resistance was felt and the HR of the patient was reduced from 81 to...
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