Pregnancy remodels almost every organ system, and on paper the result reads like disease: a falling haemoglobin, glucose in the urine, swollen ankles, a systolic murmur. Drive the pregnancy from 6 to 40 weeks and open each system to see the mechanism, the expected finding and the look-alike that is not expected — then switch to Read the panel and interpret real values against pregnancy-specific ranges.
Choose a system
28 weeks
The question is never simply “is this abnormal?” It is “is this the expected magnitude, in the expected direction, at the expected gestational age?”
The diagram is a teaching schematic of the chapter’s physiology, not an anatomical drawing to scale.
Maternal adaptationSelect a system, or slide the weeks
Maternal adaptation
Choose a system on the left, or click the diagram.
Enter a panelEvery value is judged against a pregnant range