Basic Sciences for Obstetrics and Gynaecology Springer-Verlag London Ltd. I Tim Chadr • Richadr Lilford Basi c Science s fo r Obstetric s an d Gynaecolog y F I F TH E D I T I ON With 61 Figures Springer Tim Chard, MD, FRCOG Academic Unit of Obstetrics/Gynaecology and Reproductive Physiology, St. Bartholomew's Hospital Medical College, West Smithfield, London EC1A 7BE, UK Richard Lilford, MRCOG, MRCP Department of Obsterics and Gynaecology, and Institute of Epidemiology and Health Services Research, Leeds General Infirmary, Leeds LS2 9LN, UK British Library Cataloguing in Publication Data Chard, T. (Tim) Basic sciences for obstetrics and gynaecology. - 5th ed. 1. Gynecology 2. Obstetrics 3. Medical sciences I. Title II. Lilford, Richard J. 618 Library of Congress Cataloging-in-Publication Data Chard, T. Basic sciences for obstetrics and gynaecology / Tim Chard and Richard Lilford. - 5th ed. p. cm. Includes index. ISBN 978-3-540-67725-3 ISBN 978-1-4471-0595-4 (eBook) DOI 10.1007/978-1-4471-0595-4 1. Medical sciences. 2. Obstetrics. 3. Gynecology. I. Lilford, Richard, 1950- . II. Title. [DNLM: 1. Obstetrics. 2. Pregnancy-physiology. 3. Genitalia, Female-anatomy & histology. 4. Drug Therapy-in pregnancy. WQ 100 C471b 1997] R129.C44 1997 618-dc21 DNLM/DLC 97-17860 for Library of Congress CIP Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms of licences issued by the Copyright Licensing Agency. Enquiries concerning reproduction outside those terms should be sent to the publishers. © Springer-Verlag London 1998 Originally published by Springer-Verlag London Berlin Heidelberg in 1998 Softcover reprint of the hardcover 5th edition 1998 First published 1983 Second Edition 1986 Third Edition 1990 Fourth Edition 1995 The use of registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant laws and regulations and therefore free for general use. Product liability: The publisher can give no guarantee for information about drug dosage and application thereof contained in this book. In every individual case the respective user must check its accuracy by consulting other pharmaceutical literature. Typeset by Wilmaset Ltd., Birkenhead, Wirral 28/3830-54321 Printed on acid-free paper Preface to the Fifth Edition In the three years since the publication of the 4th edition, this book has been very well received by those for whom it was intended - candidates for primary examinations in Obstetrics and Gynaecology. In consequence, we make no excuse for repeating the formula of addressing only those facts which are neither speculative nor con tentious. An attempt to widen this brief would multiply the length of the book by three or four times and would place it in an identical category with several much larger texts. As the underlying philosophy remains the same, the main changes in the fifth edition are the addition of new material and revision of exisiting material. Revision of existing material has been extensive with many detailed changes aimed at expanding the factual base while retaining or improving the clarity of explanation. Most im portantly, many of the changes are those which have been suggested by readers and reviewers of the previous editions; this feedback has been invaluable to the authors and we now hope will be equally valuable to readers of the new edition. In this edition we wish to express our particular gratitude to Louise Abrahams, Roger Amos, Sheryl Homa, Paul Howells, Ray Iles, Don Jeffries, Paul Jenkins, David Lowe, Mary Macintosh, Louise Neville, Michael Prentice, and Basky Thilaganathan for their comments and suggestions. London and Birmingham Tim Chard August 1997 Richard Lilford Contents Chapter 1 Cell Biology, Embryology and the Placenta.. ............. 1 The Cell ........................................................................... 1 The Genetic Code.............................................................. 4 Chromosome Abnormalities ............................................... 12 Genetics - Single and Multiple Gene Defects ........................ 15 Fertilisation .............. ............ .......... ........ ................. ......... 16 Cleavage of the Embryo: The Morula and the Blastocyst ........ 18 Implantation of the Blastocyst and Early Development of the Placenta and Embryo ................................................ 19 Multiple Pregnancy............................................................ 24 Further Development of the Embryo ................................... 24 The Placenta..................................................................... 25 Placental Synthesis ............................................................ 29 Placental Transfer ............................................................. 31 The Membranes ................................................................ 35 Amniotic Fluid (Liquor) ......... ............................................ 36 Chapter 2 Anatomy........................................................... 37 Vulva ............................................................................... 37 Vagina ............................................................................. 39 Uterus .............................................................................. 39 Fallopian Tubes ................................................................ 44 Ovaries ............................................................................ 44 Female Urological System................................................... 45 Levator Ani Muscles (Pelvic Diaphragm) .............................. 48 Perineum ......................................................................... 49 Peritoneum and Ligaments of the Pelvis .............................. 51 Blood Supply to the Female Pelvis....................................... 52 Lymphatic Drainage of the Female Pelvis............................. 53 Nerve Supply to the Female Pelvis....................................... 53 Pelvic Skeleton.................................................................. 54 Fetal Skull ........................................................................ 58 Microstructure and Function of the Non-pregnant Reproductive Tract ........................................................ 60 viii Contents Embryology of the Genital System ...................................... 62 Anterior Abdominal Wall .................................................. 66 Chapter 3 General Physiology and Biochemistry ............. ........ 69 Cardiovascular System ...................................................... 69 Lung ............................................................................... 74 Acid-Base Balance ......................................................... '" 78 Kidney ............................................................................ 79 Nervous System ........ ............... ...... .... ........... ....... ....... ..... 80 Gut and Nutrition ............................................................ 80 Metabolism...................................................................... 82 Immunology.................................................................... 87 Chapter 4 Endocrinology.................................................... 93 Basic Concepts in Endocrinology........................................ 93 Hypothalamus.................................................................. 95 Anterior Pituitary............................................................. 97 Posterior Pituitary.... ......... ..... ....... .... ... ...... ............. ... ...... 102 Breast and Lactation. .... ... ........ .............. ..... ........ ..... ......... 103 Sex Steroids ..... ........ ....... ...... ....... ...... ....... .... ... ........ ..... ... 105 Ovary .............................................................................. 110 Testis .............................................................................. 115 Thyroid Gland ................................................................. 117 Adrenal Cortex ................................................................. 121 Adrenal Medulla ............................................................... 123 Hormones Involved in Calcium Homeostasis ....................... 125 Puberty ........................................................................... 125 Menopause ...................................................................... 126 Initiation of Labour.................. ..... ..... ....... ....... ...... .......... 127 Pineal Gland .................................................................... 128 Atrial Natriuretic Peptide (ANP) ...... ....... ...... ...... ....... ........ 128 Chapter 5 Pathology......................................................... 129 Inflammation................................................................... 129 Wound Healing ................................................................ 131 Metabolic Response to Injury............................................. 133 Shock .............................................................................. 134 Abnormal Tissue Growth .................................................. 135 Tumours ......................................................................... 136 Thrombosis and Embolism ................................................ 145 Deposition of Salts and Pigments ....................................... 147 Effects of Radiation .......................................................... 148 Chapter 6 Microbiology..................................................... 151 Bacteria ........................................................................... 151 Viruses ......... ..... .................... ....... ............. ............. ......... 155 Rickettsial Organisms ....................................................... 160 Mycoplasma and Ureaplasma.................. ............................ 160 Fungal Infections .............................................................. 161 Protozoal Infections ........................................................... 161 Some Characteristics of Infections at Special Sites................. 162 Chapter 7 Pharmacology.................................................... 163 Sedative, Hypnotic and Anxiolytic Agents ............................ 163 Antipsychotic Agents ......................................................... 163 Antidepressive Agents ........................................................ 164 Analgesics ........................................................................ 165 Antacids ........................................................................... 166 Laxatives .......................................................................... 166 Anti-emetics.. ...... ................. ............................................ 167 Antihistamines .................................................................. 167 Diuretics .......................................................................... 167 Antihypertensive Agents ..................................................... 167 Drugs Affecting Blood Coagulation ...................................... 169 Drugs Used for Treatment of Osteoporosis ........................... 170 Chemotherapy of Infection ................................................. 170 Pharmacology of Sex Steroids ............................................. 174 Drugs Affecting Contraction of the Uterus ........................... 178 Anticancer Drugs (Cytotoxic Agents) ................................... 181 General Anaesthetic Agents ................................................ 183 Local Anaesthetic Agents .................................................... 185 Drugs of Abuse ................................................................. 186 General Aspects of Pharmacology in Pregnancy.................... 186 General Aspects of Pharmacology During Breast Feeding ....... 187 Appendix A Statistics ......................................................... 189 Appendix B Ultrasound................ .............. ........................ 191 Index ................................................................................ 193 Chapter 1 Cell Biology, Embryology and the Placenta The cell The cell consists of a nucleus, cytoplasm and a cell membrane. The cytoplasm includes organelles such as mitochondria and the Golgi apparatus, supported by a frame of cytoskeleton. The nucleus The nucleus consists of DNA supercoiled around proteins (histones and acidic proteins), and one or more nucleoli (largely made up of RNA), and a surround ing bilayer membrane which is similar in composition to the endoplasmic reticulum. This membrane has pores which allow the inward transfer of regulatory DNA binding proteins and the outward transfer of mRNA. The cytoplasm The cytoplasm contains a variety of organelles: 1. Mitochondria: These have inner and outer bilayer membranes. The inner membrance has numerous folds (cristae) which contain the respiratory enzymes and cytochromes of the electron transport chain. The enzymes of the Krebs cycle are found in the matrix of the mitochondria. They produce substrates (NAD, FADH for the electron transport chain and hence production of ATP. They also 2) provide substrates for fatty acids, nucleic acid, lipid and steroid biosynthesis. Mitochondria also contain self-replicating circular DNA inherited exclusively from the mother. This codes for mitochondrial enzymes such as cytochrome oxidase and ATP synthetase. 2. The cytoskeleton: A system of filaments which are responsible for shape, motility and contact inhibition. Three kinds of filaments occur: microtubules (20-27 nm in diameter, which contain tubulin and are responsible for migration