There is no system in the body which does not undergo major changes during pregnancy. The aim of this book is to describe the physiology of these changes and to describe how an understanding of them is relevant to the care of the pregnant woman. The book is organized by body system and describes in detail the findings of the latest research into the physiology of human pregnancy. Good clinical practice in obstetrics depends on a sound understanding of the relevent physiology and so this book will prove invaluable to all obstetricians whether in training or in practice.