{Reference Type}: Case Reports
{Title}: Giant Coronary Arterial Aneurysm of the Proximal Left Anterior Descending Artery as the Cause of Wide Splitting of the Second Heart Sound.
{Author}: Nagasawa A;Mori S;Akita T;Yamada H;Oki T;Nishii T;Yamashita T;Okita Y;Hirata KI;
{Journal}: Intern Med
{Volume}: 57
{Issue}: 8
{Year}: Apr 2018 15
{Factor}: 1.282
{DOI}: 10.2169/internalmedicine.9708-17
{Abstract}: Even in modern clinical cardiology, basic auscultation skill is not obsolete and is still important because it can always provide a clue to an underlying pathophysiology. We demonstrate an unusual mechanism of pathological wide splitting of the second heart sound due to external compression of the pulmonary trunk in a patient with a giant coronary arterial aneurysm of the proximal left anterior descending artery. Echocardiography, when combined with a three-dimensional anatomical analysis with cardiac computed tomography, was useful for elucidating the mechanism of the abnormal heart sounds.