• J. Thorac. Cardiovasc. Surg. · Apr 2022

    Pulmonary artery size on computed tomography is associated with major morbidity after pulmonary lobectomy.

    • Peter J Kneuertz, Max S Yudovich, Chiemezie C Amadi, Elizabeth Bashian, Desmond M D'Souza, Mahmoud Abdel-Rasoul, and Robert E Merritt.
    • Division of Thoracic Surgery, Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio. Electronic address: Peter.Kneuertz@osumc.edu.
    • J. Thorac. Cardiovasc. Surg. 2022 Apr 1; 163 (4): 1521-1529.e2.

    ObjectiveTo investigate the relationship of pulmonary artery diameter (PAD) measured by computed tomography (CT) with outcomes following lobectomy.MethodsRecords of patients undergoing pulmonary lobectomy for lung cancer between 2011 and 2018 were reviewed. Baseline characteristics and postoperative outcome data were derived from the institutional Society of Thoracic Surgeons database. Luminal diameter of the central pulmonary arteries and ascending aorta were measured on preoperative CTs. Logistic regression analyses were performed to test the association of PAD with complications.ResultsA total of 736 lobectomy patients were included, who had a preoperative CT scan (25% with contrast, 75% noncontrast) available for review. A total of 141 (19.2%) patients had an enlarged main PAD ≥30 mm, and 58 (7.9%) patients had a main PAD that was larger than the ascending aorta (PA/ascending aorta ratio > 1). The right or left PAD on the surgical side was associated with major complication (odds ratio per mm, 1.12; 95% confidence interval, 1.05-1.18; P < .001), unexpected intensive care unit admission (odds ratio per millimeter, 1.11; 95% confidence interval, 1.04-1.19; P = .002), and 30-day mortality (odds ratio per millimeter, 1.25; 95% confidence interval, 1.06-1.46; P = .007). On multivariable analysis, adjusted for cardiovascular comorbidities, pulmonary function, and the operative approach, surgical side PAD remained an independent factor associated with major complication.ConclusionsCT-based measurements of the PAD on the operative side may inform of the about the risk of major complications after lobectomy. Review of PA size on preoperative CT scans may help identify patients who would benefit from formal evaluation of PA pressures to improve the operative risk assessment.Copyright © 2021 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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