Association between the Angle of the Left Subclavian Artery and Procedural Time for Percutaneous Coronary Intervention in Patients with Acute Coronary Syndrome

Figure 2

Representative schematic images (upper panels) and CT images in the coronal view (lower panels) in patients with mild tortuosity (a) and severe tortuosity (b). (a) In a case of mild tortuosity, the angle of the left subclavian artery is 79 degrees. In this case, the time from sheath insertion to the first balloon time was 20 minutes and total procedure time was 46 minutes, respectively. (b) In patients with severe tortuosity, the angle of the left subclavian artery was 55 degrees. In this case, the time from sheath insertion to the first balloon time, the total procedure time, and the fluoroscopy time were longer than in case (a) (43 minutes and 97 minutes, respectively). (c) The angle of the aortic root on the coronal view. The details of the measurement method are shown in the text. LRA, left radial approach; PCI, percutaneous coronary intervention.

(a)

(b)

(c)