Visual Biofeedback Through Transperineal Ultrasound During the Expulsive Phase of Labour to Improve Maternal Childbirth Satisfaction

INCLUSION criteria (all must be met):

1. Voluntary written informed consent of the participant.
2. Term (37-42w) singleton gestations.
3. Vaginally nulliparous (no previous vaginal birth \> 20 weeks of gestation).
4. Fetus in cephalic presentation, without any major congenital or chromosomal anomalies.
5. Admitted to the delivery unit in labour, regardless of the onset (spontaneous or induced).
6. Epidural analgesia in situ.
7. Non-pathological CTG at the time of recruitment (2015 FIGO classification).

EXCLUSION criteria (if one or more is present):

* Significant psychiatric comorbidity (psychiatric follow-up during pregnancy, or active (psycho-pharmacological) treatment).
* History of severe PFDs/surgery (or any other condition affecting pelvic floor function/anatomy, besides pregnancy and delivery).
* Significant neurological disease e.g., spinal injury, multiple sclerosis, diabetic neuropathy, etc.
* Significant connective tissue disorders (e.g., Ehlers-Danlos syndrome).
* Severe active maternal (pregnancy-related) comorbidity: non-exhaustive e.g., severe hypertensive disorder, significant antepartum haemorrhage, sepsis, thromboembolism, severe pre-existing cardiac/respiratory/neurological disease, etc. Well-controlled comorbidities will not be considered exclusion criteria (non-exhaustive e.g., well-controlled (gestational) diabetes, hypertensive disorders of pregnancy, PROM without signs of intra-amniotic infection, etc.).
* Linguistic barriers - not able to give written informed consent in Dutch.
* Severe visual impairment (sufficient to the receipt/comprehension of visual biofeedback).