| 21. |
A Noninvasive Technic for Determining Patency of Saphenous Vein Coronary Bypass Grafts |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 595-600
K. Gould,
David Mozersky,
D. Hokanson,
Donald Baker,
J. Kennedy,
David Sumner,
D. Strandness,
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摘要:
A noninvasive method for determining patency of saphenous vein coronary bypass grafts has been developed in our laboratory. The system consists of a pulsed ultrasonic Doppler, a position-sensing arm for the Doppler transducer, a memory oscilloscope, an electrocardiogram, and strip-chart recorder. Patients are studied with the transducer in the suprasternal notch and intercostal spaces. Wherever flow is detected in the anterior mediastinum, a visible dot is stored on the oscilloscope screen at a point corresponding to the location of flow in the mediastinum. By repeated sampling at various depths a composite picture of a proximal section of graft is developed. Peak velocity flow signals from grafts occur during diastole distinguishing them from other arterial flow signals. Twenty-eight patients having 41 patent grafts were studied in a preliminary evaluation of the method. Three examples of angiograms with corresponding ultrasonic arteriograms demonstrate the feasibility and potential value of this new noninvasive technic for assessing patency of saphenous vein coronary bypass grafts.
ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 22. |
His Bundle ElectrogramA Critical Appraisal of its Uses and Limitations |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 601-613
Benjamin Scherlag,
Philip Samet,
Richard Helfant,
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 23. |
Angiographic Appearance of Idiopathic Hypertrophic Subaortic Stenosis |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 614-622
Allan Simon,
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 24. |
Mitral Insufficiency Secondary to Aortic Valvular Bacterial Endocarditis |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 623-626
Jesse Edwards,
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摘要:
The anterior leaflet of the mitral valve is partly continuous through a fibrous membrane with the aortic valve. Lying immediately subjacent to the aortic valve, the mitral valve and its chordae may become secondarily infected in instances of primary aortic valvular bacterial endocarditis. Destructive changes of the anterior mitral leaflet or mitral chordae may lead to mitral insufficiency. The latter may dominate the functional and clinical pictures. In some instances, when infection is overcome, the clinical picture may appear to be that of primary mitral valvular disease.
ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 25. |
BOOK REVIEWS |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 627-632
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 26. |
Resting and Exercise Systolic IntervalsThe author replies |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 633-634
David,
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 27. |
The ConotruncusI. Its Normal Inversion and Conus Absorption |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 634-635
Maurice,
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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| 28. |
The ConotruncusI. Its Normal Inversion and Conus AbsorptionThe authors reply |
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Circulation,
Volume 46,
Issue 3,
1972,
Page 635-636
Daniel,
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ISSN:0009-7322
出版商:OVID
年代:1972
数据来源: OVID
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