Published: 2021-05-27

The effect of the maternal vitamin D level on the risk of spontaneous pregnancy loss in the first trimester

Sharmin Ferdous, Farhat Hussain, Samira Hayee, Nahreen Akhtar, Suraiya Khanam, Khadiza Begum, Adeba Sultana


Background: Pregnancy loss in the first trimester is one of the most disappointing matters for a mother. But spontaneous pregnancy loss in the first trimester is the most common negative outcome of pregnancy. It's estimated that about 10% of known pregnancies are lost in the first trimester whereas fewer than 4% of pregnancies miscarry in the second trimester. Aim of current study was to assess the effect of the maternal vitamin D level on the risk of spontaneous pregnancy loss in the first trimester.

Methods: It was a case-control study conducted in the department of obstetrics and gynecology, Sir Salimullah medical college Mitford hospital, Dhaka, Bangladesh during the period of September 2018 to August 2019. A total of 100 patients were included in this study. Statistical analyses of the results were obtained by using window-based computer software devised with SPSS version 22.0.

Results: In analyzing the association of serum vitamin D status with first-trimester pregnancy state it was observed that more than half (52.0%) patients had severe deficiency (<10 ng/ml) in the case group and 14 (28.0%) patients in the control group. In total 24 (48.0%) patients had deficiency (10-20 ng/ml) in case and 35 (70.0%) in control group. Only 1 (2.0%) patient had insufficiency (21-29 ng/ml) in control group. The difference was statistically significant (p<0.05) between the two groups.

Conclusions: Maternal serum vitamin D deficiency was significantly associated with early spontaneous pregnancy loss in the first trimester.


First trimester, Miscarriage, Serum vitamin D, Gestational age

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