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Biomedical subjects

J L Mercer

Publications and source records attributed to J L Mercer.

36 records · Page 2Linked to original sources
PubMed1975

Acceptable size of the pulmonary valve ring in congenital cardiac defects.

Because congenital defects are being corrected at progressively younger ages, knowledge of the normal sizes of cardiac orifices and their acceptable limits is becoming increasingly important. A graphically corrected table of normal children's heights and pulmonary artery diameters is given. In addition, reasons are presented for the belief that a decrease in the cross-sectional area of up to 50% of normal may be considered acceptable during corrective procedures; in light of present knowledge any further decrease in cross-sectional area, in particular below 25% of normal, should probably not be left uncorrected.

Age Factors↗
PubMedDate not supplied

A modified technique for mitral valve replacement.

Between 1976 and 1983 254 mitral valve prostheses (243 Björk-Shiley and 14 bioprostheses) were implanted in 252 patients using a modified technique. The age of patients varied from 26-72 years (mean 56 +/- 18 years). This technique allows an equidistant placement of sutures and accurate stitching of mitral valve annulus to the prosthetic valve ring. Follow-up averaged 67 +/- 21.6 months (3-7 years). Linearized aseptic dehiscence was 0.17 per 100 patient years. This technique was especially useful in patients with small left atrium and minimised the risk of a major prosthetic detachment.

Bioprosthesis↗