What specific type of medical disaster is the greatest immediate threat during a birth on Mars due to atmospheric composition requirements?

Answer

Catastrophic outcome from a slow leak in the pressurized habitat

Humans require pressurized environments with Earth-like mixtures of nitrogen and oxygen, meaning a habitat failure, even a slow leak, would be immediately catastrophic for a newborn infant.

What specific type of medical disaster is the greatest immediate threat during a birth on Mars due to atmospheric composition requirements?
reproductionMarsSpacehumanbirth