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Abstract
Double contrast cardioangiography offers significant aditional information about the
in vivo status of the cardiovascular system. Extensive experimental studies have resulted
in a safe technique for performing such studies on either the left or right sides
of the circulatory system. The method consists of preloading the injection catheter
(usually selectively positioned) with contrast a medium such as 75 per cent Hypaque,
and a specially designed gas injector unit is utilized to deliver the CO2 in a controlled manner in order to disperse the contrast medium evenly and widely
onto the vessel walls for maximum detail.
Safe and reliable methods have been developed for utilizing “double contrast and CO2 angiography” for aortic valvulography, aortography, renal arteriography, percutaneous
femoroilioarteriography, including the small vessels below the knee, and coronary
arteriography. For the latter procedure, acetylcholine for asystole and pacemaker
stimulation for controlled restoration of heartbeat, are incorporated as added safety
measures, while ostia, lumina, and ramifications of coronaries are outlined in double
contrast. The gas control injection unit insures maximum efficiency of the two media,
thereby permitting use of small quantities of both and it also obviates dangers of
air contamination. Direct vision of luminal or valvular lesions, as contrasted to
obscured, indirect, and usually only functional information of current cardioangiograms,
offers the diagnostician and surgeon intimate knowledge of anatomicopathologic changes
before treatment or surgery.
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References
- A new method for coronary arteriography by means of acetylcholine asystole with controlled return of heart rate using a cardiac pacemaker.J. A. M. A. June, 1962; vol. 180
- The safety of intravascular CO2 and its use for roentgenologic visualization of intracardiac structures.Ann. Int. Med. 1957; 47: 191
- Exploration into the possibilities of venous inflow occlusion during angiocardiography.in: ed. 4. S. Forum. 11. 1960: 145
Article info
Footnotes
☆Supported by Research Grants from the Graduate School. University of Minnesota, Minnesota Heart Association. Life Insurance Medical Research Fund, United States Public Health Service Grant No. 830, and the Benefactors of the Cardiovascular Surgical Research Fund.
☆☆Read at the Twenty-third Annual Meeting of the Society of University Surgeons, Cleveland, Ohio, Feb. 8–10, 1962.
Identification
Copyright
© 1962 Published by Elsevier Inc.
