What should you know about fainting during labor?

Tell the midwife, obstetrician, or nurse immediately. The team will check your breathing, pulse, blood pressure, alertness, and your baby's wellbeing, while looking for a reason for the episode.

Fainting, also called syncope or a blackout, happens when the brain briefly receives too little blood flow. Labor pain, fear, exhaustion, overheating, dehydration, or a sudden drop in blood pressure can contribute. Lying flat on the back late in pregnancy can also reduce the return of blood to the heart for some people.

The team may also consider blood loss, anaemia, low blood sugar, an abnormal heart rhythm, or another medical problem. Fainting does not identify one cause by itself. The timing, warning symptoms, duration of unconsciousness, injuries, medicines, and pregnancy history all help guide the assessment.

If you feel faint, say so clearly and stop trying to stand or walk. Sit or lie down with help, preferably on your side, and loosen tight clothing. Do not eat or drink while drowsy or unconscious. If you are supporting someone who has fainted, call the maternity team, protect the head from injury, and keep watching their breathing until help arrives.

After you are awake, describe what you felt before the episode, such as nausea, sweating, blurred vision, palpitations, chest discomfort, or shortness of breath. Do not dismiss a second episode, a fall, or continuing weakness.

During labor, any fainting episode should be reported urgently to the maternity team. Seek emergency help immediately if the person is not breathing normally, remains unconscious, has a seizure, severe bleeding, severe abdominal or chest pain, marked breathlessness, a severe headache, a new weakness, or a significant injury from the fall.

Urgent assessment is also needed when fainting is followed by persistent confusion, repeated vomiting, a racing or irregular heartbeat, or reduced fetal movement. If the event happens outside the hospital, call emergency services rather than driving yourself.

Ask what checks were reassuring, what may have triggered the episode, and whether you need blood tests, heart monitoring, fluids, or changes to your birth plan. Mention any history of anaemia, dehydration, hypoglycaemia, heart rhythm problems, fainting, or medication use.