| Autor: |
Hylen, John C., Judkins, Melvin P., Herr, Rodney H., Starr, Albert |
| Zdroj: |
JAMA: Journal of the American Medical Association; February 1969, Vol. 207 Issue: 6 p1120-1122, 3p |
| Abstrakt: |
Assessing changes in the silicone-rubber ball of the Model 1000 series Starr-Edwards aortic-valve prosthesis is an increasingly frequent diagnostic problem. Bariumimpregnated, silicone-rubber balls have been available since 1962. Presently, these constitute slightly less than 10% of all silicon-rubber balls distributed. Radiographic evidence of aortic-ball variance was obtained for a patient having normal sounds of the prosthetic aortic valve as determined by auscultation, phonocardiography, and sound spectrography. All silicone-rubber balls now produced by the manufacturer are barium-impregnated; henceforth, radiographic techniques will be more uniformly applicable to the early diagnosis of aortic-ball variance. Since most patients with aortic-ball variance are asymptomatic, routine screening for the early detection of ball variance is suggested for all patients with barium-impregnated, silicone-rubber balls. Serial high-resolution films and cineradiography should be used. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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