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  • Title: The role of the fractional flow reserve in the coronary steal phenomenon evaluation caused by the coronary-pulmonary fistulas: case report and review of the literature.
    Author: Huang Z, Liu Z, Ye S.
    Journal: J Cardiothorac Surg; 2020 Feb 03; 15(1):32. PubMed ID: 32013986.
    Abstract:
    BACKGROUND: Congenital coronary-pulmonary fistulas (CPFs) are commonly unilateral; however, bilateral and multilateral fistulas are relatively rare. The steal phenomenon aroused from bilateral or multilateral CPFs, and was uncertain and seldom reported. We possess a new tool to assess the hemodynamic significance of coronary artery fistulas. This study aimed to describe the clinical presentation, diagnostic modalities, and management of the coincidentally detected congenital bilateral CPFs. CASE PRESENTATION: A case of a 52 year-old female with 10 years history of typical palpitations and chest tightness was presented. The selective coronary arteriography showed a right dominant coronary circulation without significant stenosis; however, with anomalous vessels originating from the proximal right and left anterior descending coronary arteries, draining into the pulmonary artery through a plexus of small vessels. We introduced the fractional flow reserve (FFR) to evaluate the hemodynamic significance of CPFs. The patient was successfully treated with coil embolization. CONCLUSIONS: We presented the case of a female with typical palpitations and chest tightness due to the steal phenomenon that aroused from bilateral CPFs. The fistulas were safely and successfully closed by coil embolization. We showed a new tool for the sophisticated evaluation of the hemodynamic significance of CPFs using FFR measurement and temporary occlusion of the fistula with a standard balloon. FFR could be a promising means for the treatment of decision making of the CPFs.
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