Most frequent ways of the collateral circulation in occlusive coronary artery disease

By comparison of the sectional area of the fetal head of the fronto-occipital level in the height of the biparietalic diameter and the cross sectional area of thorax in the level area of the ventrical it was tried to determine the exspected birth weight. A mean deviation of 8,9% was found. Below a birth weight of 2500 g the presented calculation is only valid to some extend as in these cases the dominance proved in fetal development grounds of the head of the fetus becomes apparent.