Use of gravidogram for assessment of fetal weight
Ashish Kumar Bhattacharjee, Shaidul Islam Borah, Jili Basumatary
Objective: To construct a gravidogram for the population in this part of the country to detect any compromise in fetal growth as early as possible. Methodology: A prospective study was conducted on 500 women attending the antenatal OPD and antenatal ward. 100 women were selected, each at 24 ,28,32,36,40 weeks of gestation. The symphysiofundal height (SFH) was measured for each patient and the mean SFH was derived for each period of gestation The fetal weight was calculated by using Johnson's formula and compared with fetal weight calculated by ultrasonography (USG) and also with the birth weight at 40 weeks. Results and Observations: The Johnson's formula was seen to overestimate the fetal weight at weights lower than 3 kg and it was seen to correlate with the fetal weight at weights more than 3kg. At 40 weeks, the difference between the fetal weight calculated by Johnson's formula and USG was found to be statistically insignificant (p > 0.05). Conclusion: The Johnson's formula can be a very important component of antenatal care and it is as useful as USG in the determination of fetal weight.