Biological Gestational Age and Its Calendar Assessment with Ultrasound

Abstract

Evaluation of enzymatic and sonographic assessments has been done in terms of relativity of gestational length. The principle of relativity means that it is not the calendar time but the biological one that qualifies the results of both the diagnostic procedures and treatments. The described biological-calendar scale comprises and links both the enzymatic and ultra-sonographic data. The shifting of the end of the biological scale to the end of the calendar scale enables the appropriate evaluation of both the child’s maturation for labor, as well as the pregnancy duration from the last menstrual period until the end of normal births range. It is why almost all ultrasound scales heretofore useful only for 50% of deliveries (as usually encompassing range of 40 weeks) have to be lengthened.

Biological Gestational Age and Its Calendar Assessment with Ultrasound

“…Presently, it appears that the most effective way to date pregnancy is by use of ultrasound alone, which unfortu nately had a profound negative effect on the gestational age distribution by an increase in obstetric interventions and premature deliveries [5,10]. In addition a meta-analysis of many articles showed no decrease in perinatal mor tality or serious morbidity associated with preterm deliv ery, which is a problem throughout the world [2], Fortunately, the constant increase in the blood oxytocinase level of pregnant women, just like the sonographic measurements of fetal bodies, proves the appropriate development of pregnancy with all the more accuracy, the more similar the subsequent values of the enzymatic and ultrasonographic determinations.…”