Feticide Before Late Termination of Pregnancy: Pain Perception and Ethical Considerations

Abstract

Introduction: Feticide (intra-cardiac potassium chloride) before late termination of pregnancy (>20 weeks) is performed to ensure fetal demise prior to induction. Whether the fetus experiences pain remains debated, affecting guidelines.
Methods: Systematic review of neuroanatomical and clinical studies on fetal pain pathways, plus surveys of provider practices. Outcomes: gestational age of thalamocortical tract development, maternal complications, and provider attitudes.
Results: Thalamocortical connections necessary for conscious pain perception are not established before 24–26 weeks. No studies directly measure fetal pain. Feticide adds a small risk (0.3% of systemic injection) but prevents risk of live birth after termination. Provider surveys show wide variation in routine feticide use before 22 weeks.
Discussion: Current evidence suggests no conscious pain perception before 24 weeks, making routine feticide before this gestational age unnecessary from a pain perspective. However, ethical concerns about live birth remain.
Conclusions: Feticide before 24 weeks is not mandated by fetal pain evidence but may be performed to avoid live birth. After 24 weeks, feticide is recommended due to established pain pathways. Guidelines should reflect gestational age thresholds.