We are excited to announce a new edition of the pioneering Electronic Fetal Heart Rate Monitoring: The 5-Tier System by Julian T. Parer, Tekoa L. King, and Tomoaki Ikeda. This essential reference reviews the practice of fetal heart rate monitoring. Beginning with a description of the anatomy of fetal circulation, placental function as a respiratory organ, and acid-base balance, it also presents normal fetal cardiovascular and cerebral metabolism.