CHANGING TRENDS IN RATE OF CERVICAL DILATION IN FIRST STAGE OF LABOUR: PROSPECTIVE LONGITUDINAL STUDY
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Keywords
Cervical Dilation, Labour
Abstract
Background: This study was conducted to evaluate the changing trend in the rate of cervical dilatation in the first stage of labour.
Methods: This was a hospital-based prospective longitudinal observational study conducted among 300 female patients attending labour room of the Department of Obstetrics and Gynecology of SCB Medical College and Hospital, Cuttack, from 1st April 2021 to 31st March 2022 after obtaining clearance from the institutional ethics committee and written informed consent from the study participants.
Results: The mean average rate of cervical dilatation between 4-6 cm was 1.79±1.42 cm/hr and between 6-10 cm was 3.24±1.68 cm/hr. Upon conducting an independent t-test, the mean average rate of cervical dilatation was significantly higher between 6 and 10 cm than between 4 and 6 cm. The average dilatation in the case of spontaneous type of labour between 4-6 cm was 1.79±1.12 cm/hr and between 6-10 cm was 3.39±1.89 cm/hr. Upon conducting an independent t-test, there was no significant difference in the average rate of cervix dilatation in the case of spontaneous labour between 4-6 cm and 6–10 cm. In the case of induced type of labour, between 4-6 cm 1.63±1.59 cm/hr and between 6-10 cm it was found to be 2.63±1.09 cm/hr. Upon conducting an independent t-test, the average cervix dilatation in cases of induced labour was significantly higher between 6 and 10 cm of dilatation than between 4 and 6 cm of dilatation. There was a significant association between the average rate of cervical dilatation between 4-6 cm/hr among the two groups of patients, which were primigravida and multigravida. There was no significant association between the average rate of cervical dilatation between 6 and 10 cm/hr among the two groups of patients, which were primigravida and multigravida.
Conclusion: There is a substantial difference in the rates of cervical dilation during induced labour and spontaneous labour after 6 cm of cervical dilatation, indicating that the active stage of labour lasts longer with the induced method. Patients whose cervical dilatation rate is 0.6 cm or less per hour are safe candidates for vaginal delivery.
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Dr. Satyajit Jena
Assistant Professor, Department of Obstetrics & Gynaecology, SCB Medical College, Cuttack, Odisha, India.
Dr. Shwetha N.
Associate Professor, Department of Obstetrics & Gynaecology, SLIMS, Pondicherry, India.
Dr. Soubhagya Kumar Das
Assistant Professor, Department of Anaesthesiology, SCB Medical College, Cuttack, Odisha, India.
Dr. Tajma Afzal
Assistant Professor, Department of Obstetrics & Gynaecology, SCB Medical College, Cuttack, India.
Kasturi Raman Singh
Senior Resident, Department of Obstetrics & Gynaecology, SCB Medical College, Cuttack, India.
Dr. Tushar Kar
Professor, Department of Obstetrics & Gynaecology, SCB Medical College, Cuttack, India.