Normal labour, also known as eutocia, is defined as spontaneous in onset, low-risk at the start, and remaining so throughout the entire process. The delivery occurs vertex, without undue trauma, at term between 37 and 42 weeks of gestation, and without artificial interventions where possible. When caring for pregnant women in Nigerian clinical settings, recognizing the boundary between normal physiological progression and emerging complications prevents maternal and neonatal morbidity. The process culminates with the spontaneous expulsion of the conceptus.
True labour requires the coordination of several physiological factors, commonly referred to as the powers, passage, passenger, psyche, and position. Before active contractions begin, a woman may notice prodromal signs indicating her body is preparing.
Upon arrival at the maternity unit, a prompt, systematic evaluation determines whether the woman is in true labour. The nurse greets the mother respectfully, reviews her antenatal card for risk factors, and assesses vital signs. Abdominal palpation using Leopold's maneuvers establishes fetal lie, presentation, and position. Auscultation of the fetal heart rate provides baseline data regarding fetal well-being. A vaginal examination assesses cervical dilation, effacement, membrane status, and station of the presenting part, provided there is no bright red bleeding suggesting placenta previa.
Labour progresses through distinct sequential phases, each characterized by specific physiological milestones and nursing responsibilities.
As the fetus navigates the maternal pelvis, it undergoes specific positional changes known as the mechanisms of labour or cardinal movements. These movements allow the irregularly shaped fetal head to adapt to the bony dimensions of the pelvic canal.
Continuous surveillance ensures maternal safety and timely identification of fetal distress. The partograph is a graphical tool used to record vital parameters during labour, including cervical dilation, descent, uterine contractions, maternal pulse, blood pressure, and fetal heart rate. Nurses plot these observations meticulously. Regular monitoring of bladder status is equally crucial; a distended bladder can obstruct fetal descent and cause postpartum hemorrhage due to uterine atony. Encouraging oral hydration with clear fluids maintains energy levels throughout prolonged labours.
Labour pain is intense and multi-dimensional, influenced by physical, psychological, and cultural factors. Non-pharmacological comfort measures include continuous back rubs, position changes, hydrotherapy, breathing techniques, and emotional reassurance from the birth companion. Pharmacological options, when available, include systemic analgesics like pethidine or regional anesthesia such as epidurals. Nurses must assess the timing of pharmacological pain relief carefully, as administering opioids too close to delivery can cause neonatal respiratory depression.
As the second stage concludes, the nurse prepares for delivery by assembling sterile equipment, PPE, and resuscitation gear. Control of the head as it crowns prevents perineal lacerations. Once the baby is born, immediate care focuses on establishing breathing and preventing hypothermia. The infant is dried thoroughly, placed skin-to-skin on the mother's abdomen, and evaluated using the Apgar score at one and five minutes. Active management of the third stage involves administering an oxytocic drug, controlled cord traction, and uterine massage to prevent postpartum hemorrhage.