نتایج جستجو برای: coronary artery anatomy
تعداد نتایج: 394722 فیلتر نتایج به سال:
introduction aortic surgery has made much progress recently. yet the combination of aortic surgery and coronary artery bypass grafting has remained a major issue for the surgeons. patient and observation herein, we present a case of severe aortic insufficiency with aortic aneurysm concomitant with single coronary artery disease on the right coronary artery. the patient underwent bentall procedu...
INTRODUCTION Because of the unusual anatomy of an anomalous origin of the right coronary artery from the left sinus of Valsalva, selective cannulation of the guiding catheter in percutaneous coronary intervention for these cases is always challenging. CASE PRESENTATION A 58-year-old Japanese man was admitted to our hospital complaining of worsening exertional chest pain. He was suspected of h...
M yocardial perfusion occurs primarily in diastole since systolic contraction transiently impedes coronary blood flow especially to the subendocardium. Thus, myocardial bridges replicate the normal microvascular physiology of high diastolic and low systolic flow, albeit at the level of the epicardial coronary artery. Because marked myocardial bridges are not common during invasive angiography, ...
OBJECTIVES The purpose of this study was to evaluate the left main (LM) coronary artery anatomy using three-dimensional (3D) quantitative coronary angiography (QCA) software as compared to intravascular ultrasound (IVUS). BACKGROUND Percutaneous intervention of the LM coronary artery is becoming more common in selected patients with LM coronary artery disease (CAD). Quantification of LM CAD b...
Ambulatory ECG recordings were obtained from 313 consecutive, totally symptom-free male subjects on whom cardiac catheterization was subsequently performed for occupational reasons. These recordings were examined for ventricular ectopy and the results were studied in relation to the findings on selective coronary angiography. Ventricular ectopy was a common finding, with 58% of those subjects w...
MDCT has recently been used as a diagnostic tool to evaluate coronary artery stenosis and to detect coronary artery anomalies. The accuracy of MDCT has improved the assessment of stenosis as the number of detectors has increased. In addition to its excellent role in evaluating coronary artery stenosis, MDCT can provide information regarding the left ventricular function without having to perfor...
INTRODUCTION Ostial coronary artery disease is rare with a reported incidence of 0.07 to 0.25% in all patients undergoing angiography. It has a strong association with previous mediastinal irradiation, which induces specific histological changes distinct from atherosclerotic lesions. The radiation also affects the myocardium and surrounding structures, which can alter the surgical approach. C...
Congenital absence of left circumflex artery is a rare congenital anomaly of the coronary arteries. The prevalence of the anomaly in different studies ranges from 0.6% to 1.3%. Of these, 80% are benign and asymptomatic and 20% are clinically important. We report a 56-year-old man presented with acute resting chest pain who was diagnosed as having acute anterolateral infarction accompanied by el...
Coronary arteriography is routinely used as a diagnostic measure or as a prelude to surgical treatment. Failure to visualise a coronary artery division is relatively frequent and generally attributable to a complete proximal occlusion, even if no stump of blocked artery is demonstrated. Failure to intubate a coronary artery is usually the result of inadequate technique. Both of these failures m...
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