Q Shi1,2, X-Q Tan1,3, X-R Liu1, X-B Tian2,4, H-B Qi5. 1. Department of Obstetrics and Gynaecology, First Affiliated Hospital of Chongqing Medical University, Chongqing, China. 2. Department of Obstetrics and Gynaecology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Szechwan, China. 3. Department of Obstetrics and Gynecology, The Third People's Hospital of Chongqing, Chongqing, China. 4. Department of Medical Statistics, North Sichuan Medical College, Nanchong, Szechwan, China. 5. Department of Obstetrics and Gynaecology, First Affiliated Hospital of Chongqing Medical University, Chongqing, China. qihongbocq@gmail.com.
Abstract
OBJECTIVE: To obtain data on the characteristics of labour from a regional sample of Chinese parturients and to assess the pattern of progress of labour among nulliparous women. DESIGN: A prospective observational study. SETTING: The study was conducted in the First Affiliated Hospital of Chongqing Medical University. POPULATION: The final sample involved 1200 Chinese parturients with singleton, vertex and term gestation; spontaneous onset of labour; vaginal delivery; and without adverse perinatal outcomes. METHODS: A repeated-measures analysis was used to depict labour curves while an interval-censored regression was used to estimate the duration of labour centimetre by centimetre. MAIN OUTCOME MEASURES: Labour curves and the duration of labour at the 50th and 95th percentiles. RESULTS: Among 1091 nulliparous women, 57.7% had cervical dilation of 3 cm or less at the time of admission, and the mean duration of the first stage of labour was 9.1 ± 3.3 hours. From 5 to 9 cm of cervical dilation it sometimes took more than 2 hours for dilation to advance 1 cm. No obvious inflection points appeared in the labour curve of Chinese nulliparae, and no deceleration was observed. CONCLUSION: Progress of labour in Chinese parturients was more gradual than in their Western counterparts. Obstetric practice standards based on data generated from Western countries may not be appropriate for Chinese women. TWEETABLE ABSTRACT: A prospective study has evaluated labour patterns in Chinese women using regional data from nulliparae.
OBJECTIVE: To obtain data on the characteristics of labour from a regional sample of Chinese parturients and to assess the pattern of progress of labour among nulliparous women. DESIGN: A prospective observational study. SETTING: The study was conducted in the First Affiliated Hospital of Chongqing Medical University. POPULATION: The final sample involved 1200 Chinese parturients with singleton, vertex and term gestation; spontaneous onset of labour; vaginal delivery; and without adverse perinatal outcomes. METHODS: A repeated-measures analysis was used to depict labour curves while an interval-censored regression was used to estimate the duration of labour centimetre by centimetre. MAIN OUTCOME MEASURES: Labour curves and the duration of labour at the 50th and 95th percentiles. RESULTS: Among 1091 nulliparous women, 57.7% had cervical dilation of 3 cm or less at the time of admission, and the mean duration of the first stage of labour was 9.1 ± 3.3 hours. From 5 to 9 cm of cervical dilation it sometimes took more than 2 hours for dilation to advance 1 cm. No obvious inflection points appeared in the labour curve of Chinese nulliparae, and no deceleration was observed. CONCLUSION: Progress of labour in Chinese parturients was more gradual than in their Western counterparts. Obstetric practice standards based on data generated from Western countries may not be appropriate for Chinese women. TWEETABLE ABSTRACT: A prospective study has evaluated labour patterns in Chinese women using regional data from nulliparae.
Authors: Olufemi T Oladapo; Joao Paulo Souza; Bukola Fawole; Kidza Mugerwa; Gleici Perdoná; Domingos Alves; Hayala Souza; Rodrigo Reis; Livia Oliveira-Ciabati; Alexandre Maiorano; Adesina Akintan; Francis E Alu; Lawal Oyeneyin; Amos Adebayo; Josaphat Byamugisha; Miriam Nakalembe; Hadiza A Idris; Ola Okike; Fernando Althabe; Vanora Hundley; France Donnay; Robert Pattinson; Harshadkumar C Sanghvi; Jen E Jardine; Özge Tunçalp; Joshua P Vogel; Mary Ellen Stanton; Meghan Bohren; Jun Zhang; Tina Lavender; Jerker Liljestrand; Petra Ten Hoope-Bender; Matthews Mathai; Rajiv Bahl; A Metin Gülmezoglu Journal: PLoS Med Date: 2018-01-16 Impact factor: 11.069
Authors: O T Oladapo; V Diaz; M Bonet; E Abalos; S S Thwin; H Souza; G Perdoná; J P Souza; A M Gülmezoglu Journal: BJOG Date: 2017-11-03 Impact factor: 6.531