Collateral Circulation in Chronic Total Occlusions
نویسندگان
چکیده
منابع مشابه
Collateral Circulation in Chronic Total Occlusions - An Interventional Perspective
Human coronary collaterals are inter-coronary communications that are believed to be present from birth. In the presence of chronic total occlusions, recruitment of flow via these collateral anastomoses to the arterial segment distal to occlusion provide an alternative source of blood flow to the myocardial segment at risk. This mitigates the ischemic injury. Clinical outcome of coronary occlus...
متن کاملGrowth factors in the collateral circulation of chronic total coronary occlusions: relation to duration of occlusion and collateral function.
BACKGROUND Despite extensive animal experimental evidence, there are few data on the relation of growth factors and collateral function in humans. METHODS AND RESULTS In 104 patients with a chronic total coronary occlusion (CTO; >2 weeks' duration), collateral function was assessed invasively during recanalization by intracoronary Doppler and pressure recordings. A collateral resistance index...
متن کاملDirect assessment of coronary steal and associated changes of collateral hemodynamics in chronic total coronary occlusions.
BACKGROUND Coronary steal can occur in collateral-dependent myocardium during pharmacologically induced vasodilation. This study assessed coronary steal invasively in chronic total coronary occlusions (TCOs). METHODS AND RESULTS In 35 consecutive patients with a percutaneous transluminal coronary angioplasty of a TCO (duration >4 weeks), coronary flow velocity (APV) by a Doppler wire and dist...
متن کاملIntracoronary imaging in chronic total occlusions
Chronic total occlusion (CTO) intervention constitutes approximately 10–20% of all angioplasty procedures at selected centers. Benefits of CTO revascularization, in addition to relief of angina, include improvement of left ventricular function, reduced risk of major adverse cardiac events and potentially increased survival. Although several techniques, devices and guidewires have been developed...
متن کاملImmediate changes of collateral function after successful recanalization of chronic total coronary occlusions.
BACKGROUND Coronary collaterals are essential to maintain myocardial function in chronic total coronary occlusions (TCOs). The aim of the present study was to assess the collateral circulation in TCOs before coronary angioplasty and to determine the recruitable collateral perfusion after recanalization by use of intracoronary Doppler flow velocimetry. METHODS AND RESULTS In 21 patients with T...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Interventions
سال: 2017
ISSN: 1936-8798
DOI: 10.1016/j.jcin.2017.03.009