摘要
Abstract Considerable discrepancies exist between pathologic and angiographic findings (15% 85% vs. 2.5%) concerning the incidence of myocardial bridging (MB). We introduce a specific method to identify MB with intracoronary ultrasound (ICUS). ICUS was performed in 31 patients (54±6 years, 27 males) who presented angiographic signs of MB by a systolic “milking effect”. A characteristic echolucent “half moon” area surrounding the vessel of the bridge segment was detected in all the patients studied with ICUS. The width of this echolucent “half moon” area was 0.37±0.08 mm (0.2 mm 0.8 mm) in diastole and 0.42±0.10 mm Depment of Cardiology, University GHS Essen, Germany (Ge JB, Grge G, Liu F, Baumgart D, Haude M, Shah V, Simon H, Sack J, Wisniewski G and Erbel R)(0.2 mm 1.0 mm) in systole. Using this sign, 14 patients with angiographically normal coronary arteries but with angiographic intramyocardium like course of a LAD segment were further examined with ICUS. In 12 patients, a systolic compression with an echolucent “half moon” area surrounding the vessel was detected. After intracoronary provocation with nitroglycerin, all the 12 patients with ICUS “half moon” area were presented with “milking effect” angiographically. In summary, the ICUS sign of an echolucent “half moon” area surrounding the vessel is a new and specific character for identifying myocardial bridging.
Abstract Considerable discrepancies exist between pathologic and angiographic findings (15% 85% vs. 2.5%) concerning the incidence of myocardial bridging (MB). We introduce a specific method to identify MB with intracoronary ultrasound (ICUS). ICUS was performed in 31 patients (54±6 years, 27 males) who presented angiographic signs of MB by a systolic “milking effect”. A characteristic echolucent “half moon” area surrounding the vessel of the bridge segment was detected in all the patients studied with ICUS. The width of this echolucent “half moon” area was 0.37±0.08 mm (0.2 mm 0.8 mm) in diastole and 0.42±0.10 mm Depment of Cardiology, University GHS Essen, Germany (Ge JB, Grge G, Liu F, Baumgart D, Haude M, Shah V, Simon H, Sack J, Wisniewski G and Erbel R)(0.2 mm 1.0 mm) in systole. Using this sign, 14 patients with angiographically normal coronary arteries but with angiographic intramyocardium like course of a LAD segment were further examined with ICUS. In 12 patients, a systolic compression with an echolucent “half moon” area surrounding the vessel was detected. After intracoronary provocation with nitroglycerin, all the 12 patients with ICUS “half moon” area were presented with “milking effect” angiographically. In summary, the ICUS sign of an echolucent “half moon” area surrounding the vessel is a new and specific character for identifying myocardial bridging.
