Use of Preoperative Sodium Bicarbonate Among Women With Obstructed Labor

Inclusion Criteria: * Patients with obstructed labour * Must be a singleton pregnancy * Must be a term pregnancy (≥37 weeks of gestation) * Must be in cephalic presentation. Exclusion Criteria: * Patients with other obstetric emergencies such as antepartum haemorrhage, preeclampsia and eclampsia (defined as elevated blood pressure of at least 140/90 mm Hg, urine protein of at least 2+, any of the danger signs and fits), premature rupture of membranes and intrauterine fetal death. * Patients with comorbidities such as diabetes mellitus, sickle cell disease, renal disease, liver disease and heart disease. * Patients with hypokalaemia (148 mmol/L) and alkalosis (bicarbonate \>22 mmol/L) because they are more likely to develop adverse drug reactions