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PLUM AND POSNER’S DIAGNOSIS OF STUPOR AND COMA

Fourth Edition

1

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Library of Congress Cataloging-in-Publication Data

Plum and Posner’s diagnosis of stupor and coma / Jerome B. Posner . . . [et al.]. — 4th ed. p. ; cm.—(Contemporary neurology series ; 71)

Rev. ed. of: The diagnosis of stupor and coma / Fred Plum, Jerome B. Posner. 3rd ed. c1980. Includes bibliographical references and index.

ISBN 978-0-19-532131-9

1. Coma—Diagnosis. 2. Stupor—Diagnosis. I. Posner, Jerome B., 1932– II. Plum, Fred, 1924– Diagnosis of stupor and coma. III. Title: Diagnosis of stupor and coma. IV. Series.

[DNLM: 1. Coma—diagnosis. 2. Stupor—diagnosis. 3. Brain Diseases—diagnosis. 4. Brain Injuries—diagnosis.

W1 CO769N v.71 2007 / WB 182 P7335 2007] RB150.C6P55 2007

616.8'49—dc22 2006103219

9 8 7 6 5 4 3 2 1

Printed in the United States of America on acid-free paper

Jerome Posner, Clifford Saper and Nicholas Schiff dedicate this book to Fred Plum, our mentor. His pioneering studies into coma and its pathophysiology made the first edition of this book possible and

have contributed to all of the subsequent editions, including this one. His insistence on excellence, although often hard to attain, has been an inspiration and a guide for our careers.

The authors also dedicate this book to our wives, whose encouragement and support make our work not only possible but also pleasant.

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Preface to the Fourth Edition

Fred Plum came to the University of Washington in 1952 to head up the Division of Neurology (in the Department of Medicine) that consisted of one person, Fred. The University had no hospital but instead used the county hospital (King County Hospital), now called Harborview. The only emergency room in the entire county was at that hospital, and thus it received all of the comatose patients in the area. The only noninvasive imaging available was primitive ultrasound that could identify, sometimes, whether the pineal gland was in the midline. Thus, Fred and his residents (August Swanson, Jerome Posner, and Donald McNealy, in that order) searched for clinical ways to differentiate those lesions that required neurosurgical intervention from those that required medical treatment. The result was the first edition of The Diagnosis of Stupor and Coma.

Times have changed. Computed tomography (CT) and magnetic resonance imaging (MRI) have revolutionized the approach to the patient with an altered level of consciousness. The physician confronted with such a patient usually first images the brain and then if the image does not show a mass or destructive lesion, pursues a careful metabolic workup. Even the laboratory evaluation has changed. In the 1950s the only pH meter in the hospital was in our experimental laboratory and many of the metabolic tests that we now consider routine were time consuming and not available in a timely fashion. Yet the clinical approach taught in The Diagnosis of Stupor and Coma remains the cornerstone of medical care for comatose patients in virtually every hospital, and the need for a modern updating of the text has been clear for some time.

The appearance of a fourth edition now called Plum and Posner’s Diagnosis of Stupor and Coma more than 25 years after the third edition is deserving of comment. There were several reasons for this delay. First, the introduction and rapid development of MRI scanning almost immediately after the publication of the last edition both stimulated the authors to prepare a new edition and also delayed the efforts, as new information using the new MRI methods accumulated at a rapid pace and dramatically changed the field over the next decade. At the same time, there was substantial progress in theory on the neural basis of consciousness, and the senior author wanted to incorporate as much of that new material as possible into the new edition. A second obstacle to the early completion of a fourth edition was the retirement of the senior author, who also developed some difficulty with expressive language. It became apparent that the senior author was not going to be able to complete the new edition with the eloquence for which he had been known. Ultimately, the two original authors asked two of their proteges, CBS and NDS, to help with the preparation of the new edition. Fred participated in the initial drafts of this edition, but not fully in the final product. Thus, the mistakes and wrongheaded opinions you might find in this edition are ours and not his. We as his students feel privileged to be able to continue and update his classic work.

One of our most important goals was to retain the clear and authoritative voice of the senior author in the current revision. Even though much of the text has been rewritten, we worked from the original organizational and conceptual context of the third edition. Fred Plum’s description of how one examines an unconscious patient was, and is, classic. Accordingly, we’ve tried whenever possible to use his words from the first three

viii Preface to the Fourth Edition

editions. Because the clinical examination remains largely unchanged, we could use some of the case reports and many of the figures describing the clinical examination from previous editions. Fred was present at each of the critical editorial meetings, and he continued to contribute to the overall structure and scientific and clinical content of the book. Most important, he instilled his ideas and views into each of the other authors, whom he taught and mentored over many years. The primary writing tasks for the first four chapters fell to CBS, Chapters 5 to 7 to JBP, and Chapters 8 and 9 to NDS. However, each of the chapters was passed back and forth and revised and edited by each of the authors, so that the responsibility for the content of the fourth edition remains joint and several.

Most important, although the technologic evaluation of patients in coma has changed in ways that were unimaginable at the time of publication of the earlier editions, the underlying principles of evaluation and management have not. The examination of the comatose patient remains the cornerstone to clinical judgment. It is much faster and more accurate than any imaging study, and accurate clinical assessment is necessary to determine what steps are required for further evaluation, to determine the tempo of the workup, and most important, to identify those patients in critical condition who need emergency intervention. Coma remains a classic problem in neurology, in which intervention within minutes can often make the difference between life and death for the patient. In this sense, the fourth edition of Plum and Posner’s Diagnosis of Stupor and Coma does not differ from its predecessors in offering a straightforward approach to diagnosis and management of these critically ill patients.

The authors owe a debt of gratitude to many colleagues who have helped us prepare this edition of the book. Dr. Joe Fins generously contributed a section on ethics to Chapter 8 that the other authors would not have otherwise been able to provide. Chapters were reviewed at various stages of preparation by Drs. George Richerson, Michael Ronthal, Jonathan Edlow, Richard Wolfe, Josef Parvizi, Matt Fink, Richard Lappin, Steven Laureys, Marcus Yountz, Veronique van der Horst, Amy Amick, Nicholas Silvestri, and John Whyte. These colleagues have helped us avoid innumerable missteps. The remaining errors, however, are our own. Drs. Jonathan Kleefield and Linda Heier have provided us with radiologic images and Dr. Jeffrey Joseph with pathological images. The clarity of their vision has contributed to our own, and illuminates many of the ideas in this book. We also thank Judy Lampron, who read the entire book correcting typos, spelling errors (better than spellcheck), and awkward sentences. We owe our gratitude to a series of patient editors at Oxford University Press who have worked with the authors as we have prepared this edition. Included among these are Fiona Stevens, who worked with us on restarting the project, and Craig Panner, who edited the final manuscript. Sid Gilman, the series editor, has provided continuous support and encouragement.

Finally, we want to thank the members of our families, who have put up with our intellectual reveries and physical absences as we have prepared the material in this book. It has taken much more time than any of us had expected, but it has been a labor of love.

Fred Plum, MD

Jerome B. Posner, MD

Clifford B. Saper, MD, PhD

Nicholas D. Schiff, MD