Bartholomews rules in pregnancy

bartholomew's rule is a method used to determine the estimated age of gestation of pregnancy in relation to the fundic height. in this method all you need to do is to remember 3 landmarks, the symphisis pubis, the umbilicus and the xiphoid process.

whenthe fundus is at the level of:

symphisis pubis- 12 weeks

midway between symphisis pubis and umbilicus- 16 weeks

xiphoid process- 36 weeks-38 weeks

two fingerbreadths below xiphoid process- below 36 weeks and 40 weeks due to lightening