Accurate localization of pulmonary outflow obstruction is critical for selecting and executing the appropriate surgical intervention in pulmonic stenosis.
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May guide pulmonic stenosis surgery; leaves open necessity of catheterization with modern imaging.
Obstruction to pulmonary blood flow may occur in the pulmonic valve, in the infundibulum or in both. Cardiac catheterization aids in the determination of the site of obstruction. Criteria for the differentiation at operation of valvular and infundibular pulmonic stenosis are enumerated, and the usefulness of accurate pressure tracings during operation is emphasized. The accurate identification of the site or sites of obstruction to pulmonary blood flow is essential to proper surgical management. A correctly selected operation must be carried out in as complete a manner as possible.
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Kirklin et al. (1953) studied this question.
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