Vol 71, No 2 (2012)
Original article
Published online: 2012-05-30
Morphometry of the coronary artery and heart microcirculation in infants
Folia Morphol 2012;71(2):93-99.
Abstract
Knowledge of morphometric quantities of coronary arteries in infants is an
increasingly vital component in managing congenital and acquired heart disease.
Because of considerable heterogeneity of coronary vasculature, what is
considered atypical and aberrant or insignificant anatomy is often unclear. The
purpose of our present study is to define normal infant anatomy. This was
done by focusing on the segment analysis of coronary arteries in infants. Segment
analysis was used to define an accurate definition of the length and
diameter of the coronary network. The lengths, widths, and numbers of collateral
branches of the coronary arteries were measured. The coronary vessels of
40 infant hearts were visualised postmortem by injection of the coronary arteries
with X-ray opaque dye for the imaging study. Also, black ink cast and silver
impregnation specimens were studied. The longest segment of the circumflex
branches of left coronary arteries was the second; the lengths were 9066.6 ±
± 1828 μm. The length of I, III, and IV were 7366 ± 378.7 μm, 7536.6 ±
± 1533.8 μm, 4476.6 ± 690.9 μm, respectively. The lengths of the circumflex
branch of the coronary artery were longer than that of the others; it is joined
with the anterior interventricular branch of the coronary artery in the dorsal
wall of the left ventricle. Rates of branching and ramification were low, and
the number of lateral branches was low.
Keywords: heartcoronary arteriesblack inkX-ray examinationmorphometric study