Relation Between Alteration of Intensity of Sacral Pain and Cervical Progression in Latent Phase of Labour in Sampran Hospital

Abstract

Objective : To study the relationship between alteration of intensity of sacral pain and cervical progression in latent phase of labour.

Study design : Diagnostic study

Materials and methods : Seventy-eight nulliparous term pregnant women with labour pain inlatent phase were recruited. Intensity of sacral pain measured by verbal analogue score (VAS) rating from 0-10, cervical dilatation and effacement were recorded at the time of study at 0 and 2 hours later

Result : Among women who had increased at least 1 score of VAS, 64 had cervical progression. The other 12 women who had stable VAS, 6 women had progression. None had decreased VAS (sensitivity 91.43%, specificity 75%, positive predictive value 96.96%, negative predictive value 50%, positive likelihood ratio 3.66, negative likelihood ratio 0.11 and accuracy 89.74%).

Conclusion : In the latent phase of labour pain, sacral pain was effective for prediction of the cervical progression especially in the pregnant women increased in sacral pain.