A retrospective study of more than 400 patients who underwent catheterization for pulmonary valve replacement suggests diagnostic angioplasty of the coronary arteries should be performed in advance of transcatheter pulmonary valve replacement, according to the authors. Seventeen percent of patients had abnormalities that contributed to risk of coronary artery compression, according to the study. "This relatively high frequency of a potentially life-threatening risk highlights the importance of evaluating the [coronary arteries] thoroughly," the researchers wrote.

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