Relationship of Menarche Age with Uterine Sonographic Dimensions

Puberty is a period of transition from childhood to adulthood which is accompanied by physiological changes. Menarche age is an important puberty indicator for assessing growth status. Growth and maturity of the genitals are essential for a girl's reproductive health. This study aimed to investigate the relationship between uterine sonographic characteristics and dimensions with menarche and puberty in girls.

This descriptive-analytical study was performed on 76 healthy girls (aged 9-16 years) who were referred to the endocrinology clinic of Taleghani Hospital in Gorgan (Iran) during 2017-2020. Height, weight and age were recorded and uterine and ovarian dimensions were measured by pelvic sonography.

There was a significant positive correlation between menarche age (r=0.79, P=0.001) and ovarian length (r=0.81, P=0.007), ovarian volume and the length of the largest side of the uterus (r=0.77, P=0.001). Height had a significant positive association with menarche age (b=0.082, P=0.002) and ovarian length in the second place (b=0.097, P=0.004). But there was an inverse relationship between menarche age and girls' weight.

An increase in the menarche age increases the size of the uterus and its volume.