The Association of Serotonin in Labor

Kim, Min Joung; Kwen, In; Hur, Soo Young; Kim, Eun Joung; Lee, Gui Sera; Kim, Sa Jin

Abstract

OBJECTIVE
Although a common clinical problem, no uniform definition for fear of childbirth has been settled. The purpose of this study was to identify the association of serotonin in labor.
METHODS
A prospective study of serotonin and review of the medical records from the department of obstetrics and gynecology, Catholic University of Korea Holy Family Hospital from January 2004 to May confirmed 30 patients with the diagnosis of singleton pregnancy without medical or obstetrical complications, being in 37-42 weeks. Blood sampling of serotonin was done during labor according to cervix dilatation. Sample collection series on patients latent phase (before labor begins S1), active phase (cervix dilatation 3-5 cm S2), second stage (cervix dilatation full S3), third stage (at delivery of placenta within 24 hours S4), cord artery blood (S5) could be administered. Patient were divided into two groups. From this group 17 patients (G1) who were initial serotonin normal concentration (1.5-7.5 ng/mL), and 13 patients (G2) who were initial serotonin high concentration.
RESULTS
The concentration of serotonin of G1 were S1-5.8 +/- 0.8 ng/mL, S2-7.2 +/- 2.5 ng/mL, S3-8.5 +/- 3.7 ng/mL, S4-6.5 +/- 1.5 ng/mL, S5-4.9 +/- 1.2 ng/mL. The serotonin concentration of G2 were S1-10.1 +/- 2.7 ng/ mL, S2-11.2 +/- 5.2 ng/mL, S3-10.3 +/- 3.9 ng/mL, S4-11.8 +/- 8.6 ng/mL, S5-5.0 +/- 1.0 ng/mL.
CONCLUSION
The association of serotonin in labor was studied that the change of serotonin concentration was determined according to initial serotonin concentration. This difference of initial serotonin concentration will be studied about genetic polymorphism and factor by molecular biology.