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50 Grams Oral Glucose Challenge Test: Is It an Effective Screening Test for Gestational Diabetes Mellitus?

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Abstract

Aim

To find out whether 50 g oral glucose challenge test (OGCT) is an effective screening test for all pregnant women between 24 and 28 weeks gestation.

Method

A 50 g OGCT test was administered to 307 unselected women at 24–28 weeks of gestation. When venous plasma glucose (VPG) concentration after 1 h was >7.8 mmol/l, OGCT was positive. Women with a positive OGCT underwent 2 h 75 grams oral glucose tolerance test (OGTT) as a confirmatory diagnosis of GDM. When fasting and 2 h post 75 g OGTT values were >5.5 mmol/I and >8 mmol/l, respectively, women were considered diabetic.

Results

We screened 307 women for GDM by OGCT. Total number of women with positive OGCT was 83 (27.03 %). In the low-risk group, total number of women with GDM was 9/168 (5.35 %) while the total number of women with GDM in the high-risk group was 14/139 (10.07 %). There was no significant difference with respect to the total number of women with GDM in the groups.

Conclusions

A 50 g OGCT seems to be an effective screening test for both groups. More cases of GDM can be discovered when universal rather than risk-related screening is applied.

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Authors and Affiliations

Authors

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Correspondence to Adel Abu-Heija.

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Conflict of interest

The authors declare that they have no conflicts of interest.

Ethical approval

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5).

Informed consent

Informed consent was obtained from all patients for being included in the study.

Additional information

Dr. Adel Abu-Heija is professor, Dr. Majeda Al-Bash is senior registrar, Dr. Noreen Ishrat is senior house officer, Dr. Lamya Al-Kharausi is senior consultant in the Department of Obstetrics and Gynecology, Sultan Qaboos University and Hospital, Muscat, Oman.

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Abu-Heija, A., Al-Bash, M., Ishrat, N. et al. 50 Grams Oral Glucose Challenge Test: Is It an Effective Screening Test for Gestational Diabetes Mellitus?. J Obstet Gynecol India 66 (Suppl 1), 7–11 (2016). https://doi.org/10.1007/s13224-015-0752-3

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  • DOI: https://doi.org/10.1007/s13224-015-0752-3

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