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KMID : 0376219840210040979
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Chonnam Medical Journal
1984 Volume.21 No. 4 p.979 ~ p.983
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Wall Motion Characteristics of the Right Pulmonary Artery in Suprasternal M-mode Echocardiogram in the Patients With Cardiac Dysrhythmia.
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姜貞埰/Kang, Jung Chaee
尹永?/李那英/朴玉圭/Yoon, Young Geun/Lee, Na Young/Park, Ock Kyu
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Abstract
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This study describes the motion pattern of the right pulmonary artery(RPA) in normal and the patients with dysrhythmias as it can be assessed from the suprasternal M-mode echocardiogram. The motion characteristic of the RPA appeared dependent on the hemodynamics within the lumen of the RPA and the left atrium. During atrial contraction following P wave of the electrocardiogram downward motions of the inferior wall of the left atrium(SWLA) were seen, and the SWLA was seperated from RPA inferior wall. Isovolumic contraction produced upward shifting of the RPA an LA which terminates at IC point, then systolic widening of the RPA during ventricular systole was followed which ended at the end of systole. In atrial fibrillation typical downward motions at atrial contraction on the inferior wall of the RPA and SWLA were absent and the inferior wall of the RPA and SWLA were parallel running during the entire cardiac cycle. With each ectopic beat the timing of the P´ wave could be made in the RPA echogram when P´ wave could be made in the RPA echogram when P´wave is either preceding or following the QRS wave. With conduction defects each P wave produced a-dip on the inferior RPA wall and a downward motion of the SWLA thus separating it from RPA, which reflects that RPA wall motion is affected by the hemodynamics within the left atrium as well as those within the RPA.
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KEYWORD
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