In obstetric management, what specific clinical event marks the end of the second stage of labor and the transition to the third stage?

The second-stage plan combines physiologic support with surveillance and attention to perineal protection. Birth of the fetus ends the second stage and begins the third. The supplied slides then mention physiologic or active third-stage management and inspection of the vulva and vagina for lacerations requiring repair. **Key takeaway:** The stages transition at fetal birth, and care must adapt accordingly.\n\n**Glossary:** **Laceration**: a tear in tissue; **third-stage management**: care from fetal birth to placental delivery.