Serum Melatonin as a Biomarker for Assessment of Late-term and Postterm Pregnancies in Women without Spontaneous Onset of Labor

Abstract

We conducted a prospective study to assess serum melatonin as a biomarker to predict the development of late-term and postterm pregnancies and spontaneous beginning of labor in women with term pregnancies. Population of this prospective study included pregnant women with late-term and postterm pregnancies and term pregnancies as controls. In these study groups, serum melatonin concentrations were measured in women with or without labor and their perinatal data were collected. In the postterm pregnancies without labor, the lowest median melatonin concentrations were measured (p<0.05). In the late-term and postterm pregnancies with and without labor, the median serum melatonin concentrations were significantly lower than term ones (p<0.05). In the term pregnancies with labor, the highest median melatonin concentration was measured (p<0.05). A serum melatonin concentration≤34 pg/mL as a cut-off value determines late-term and postterm pregnancy with a sensitivity of 80.4% and a specificity of 81.4%. A serum melatonin concentration>29.35 pg/mL as a cut-off value determines presence of labor with a sensitivity of 82.1% and a specificity of 55.0%. In women with term pregnancies, with the measurement of serum melatonin, it is possible to predict the development of late-term and postterm pregnancies and whether these pregnancies undergo spontaneous labor. With further studies, these findings need to be supported before their routine clinical use.

Key words

Melatonin - postterm pregnancy - late term pregnancy - spontaneous labor

Publikationsverlauf

Eingereicht: 18. Oktober 2020

Angenommen nach Revision: 29. März 2021

Artikel online veröffentlicht:
31. Mai 2021

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