ObGyn Intelligence: The Evidence of Women’s Health

ObGyn Intelligence: The Evidence of Women’s Health

The Prevention Files

The 18-Minute Myth: Why “Safe” Decision-to-Delivery Times Aren’t Safe Enough-It's Not All Relative

The literature suggests 18 minutes is the delivery threshold for avoiding severe acidemia. The literature is wrong, every minute you shave off your response time is a minute of fetal brain you save.

Amos Grünebaum, MD's avatar
Amos Grünebaum, MD
Jan 03, 2026
∙ Paid

Albert Einstein once reportedly explained relativity by noting that an hour with a pretty girl feels like a minute, while a minute on a hot stove feels like an hour. For a fetus during tachysystole, every minute the uterus contracts without adequate recovery time is the hot stove.

A respected colleague recently pushed back on my assertion that the OR sho…

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