Avoiding the Intercostal Arteries in Percutaneous Thoracic Interventions.

Misura, Tihana; Drakopoulos, Dionysios; Mitrakovic, Milena; Lönnfors, Tarja; Primetis, Elias; Hoppe, Hanno; Obmann, Verena C; Huber, Adrian T; Ebner, Lukas; Christe, Andreas (2022). Avoiding the Intercostal Arteries in Percutaneous Thoracic Interventions. Journal of vascular and interventional radiology, 33(4), 416-419.e2. Elsevier 10.1016/j.jvir.2021.12.026

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The purpose of this study was to define relevant intercostal artery (ICA) anatomy potentially impacting the safety of thoracic percutaneous interventional procedures. An ICA abutting the upper rib and running in the subcostal groove was defined as the lowest risk zone for interventions requiring a supracostal needle puncture. A theoretical high-risk zone was defined by the ICA coursing in the lower half of the intercostal space (ICS), and a theoretical moderate-risk zone was defined by the ICA coursing below the subcostal groove but in the upper half of the ICS. Arterial phase computed tomography data from 250 patients were analyzed, revealing demographic variability, with high-risk zones extending more laterally with advancing age and with more cranial ribs. Overall, within the 97.5th percentile, an ICS puncture >7-cm lateral to the spinous process incurs moderate risk and >10-cm lateral incurs the lowest risk.

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