09/19/2026
How Babies Clear Fluid from Their Lungs for Their First Breath! 👶🫁🌬️
Right up until delivery, a baby's lungs are completely waterlogged with specialized fluid—over 100 mL of it! 🤯 If that fluid stayed put, breathing air would be impossible. Just before birth, a surge of adrenaline activates microscopic sodium pumps (ENaC) in the alveolar walls, draining the fluid into the lymphatic system in minutes so that first gasp of air can inflate the lungs permanently! Watch this pristine 3D medical visualization showing the first-breath fluid clearance in action!