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Effect of a change in gender on coronary arterial size

A longitudinal intravascular ultrasound study in transplanted hearts

^* Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA

View larger version (12K): [in a new window]   Figure 1 Percent change in vessel area over time of the proximal segment of the left anterior descending artery in hearts transplanted within the same gender (female to female = open circles; male to male = open squares) and in hearts transplanted across gender (male to female = solid circles; female to male = solid squares). *p < 0.05 compared with baseline. p < 0.05 compared with percent change in vessel area in all other groups. Data are presented as the mean value ± SEM.

View larger version (78K): [in a new window]   Figure 2 Serial intravascular ultrasound images of the same segment of the proximal left anterior descending artery immediately distal to the bifurcation of the left main coronary artery in a heart transplanted from a female donor to a male recipient. In the first month after heart transplantation (A), the cross-sectional area of the left anterior descending artery measured 19.60 mm2, whereas at the first annual transplant evaluation it measured 22.64 mm2, an increase of 15.5% over one year.