TY  - JOUR
T1  - RAdiographic diagnosis of aortic-ball variance
AU  - Hylen JC, Judkins MP, Herr RH, Starr A
Y1  - 1969/02/10
N1  - 10.1001/jama.1969.03150190042008
JO  - JAMA
SP  - 1120
EP  - 1122
VL  - 207
IS  - 6
N2  - 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.
SN  - 0098-7484
M3  - doi: 10.1001/jama.1969.03150190042008
UR  - http://dx.doi.org/10.1001/jama.1969.03150190042008
ER  -