Objective:

The objective of this study was to determine the relationship between the gestational age determined by ultrasound in the first trimester of pregnancy, by the date of last menstruation and at birth applied to newborns of the District Hospital of Santa Rita during the months of January - December 2018.

Material and Methods:

A retrospective, transversal, descriptive and correlational study was developed.

Sample:

The universe corresponded to the 518 full-term deliveries of pregnant women who attended the District Hospital of Santa Rita in the months of January to December 2018, of which 413 pregnant women who met the inclusion criteria were selected as a sample. The information was processed in Excel.

Results:

In our study, pregnant women mostly presented age 18 to 29 years 68.52%, multiparous 68.77% and with complete prenatal control in 42.37%. With early uptake in 53.27% and with first ultrasound in the first trimester 54.48%. In relation to gestational age (EG) by ultrasound of the first trimester and EG by FUM, there was no variation in 65.33%, in the 2nd trimester a variation of one week with 39.31% predominated and in the third trimester with variation more important than 3 weeks apart in 34.88%. In relation to the EG by ultrasound of the first trimester and Capurro test predominates without varying in 95.56%, in the second trimester variation of 1 week with 40% and finally in the third trimester with greater variation of 2 weeks in 51.16% .

Conclusions:

It was observed that there is a relationship between the EG by Ultrasound and EG by FUM, there is a relationship between EG by ultrasound and EG by Capurro Test, both predominantly in the first trimester, especially the relationship between ultrasound with Capurro test, performed at the Santa Rita District Hospital, from January to December 2018.

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