The mnemonic
12, 24, 36
What each word stands for
- 12Fundus just above the symphysis pubis
- 24Fundus at the umbilicus
- 36Fundus at the xiphisternum
Why it matters clinically
Quick bedside check that size matches dates.
Where it stops being reliable
Approximate only. Near term the fundus may descend as the head engages.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.