How Doctors Think
Authors: Jerome Groopman
How Doctors Think
Jerome Groopman M.D.
Table of Contents
Epilogue: A Patient's Questions
HOUGHTON MIFFLIN COMPANY
BOSTON • NEW YORK
2007
Copyright © 2007 by Jerome Groopman
All rights reserved
For information about permission to reproduce selections from
this book, write to Permissions, Houghton Mifflin Company,
215 Park Avenue South, New York, New York 10003.
Visit our Web site:
www.houghtonmifflinbooks.com
.
Library of Congress Cataloging-in-Publication Data
Groopman, Jerome E.
How doctors think / Jerome Groopman.
p. cm.
Includes bibliographical references and index.
ISBN
-13: 978-0-618-61003-7
ISBN
-10: 0-618-61003-0
1. Medicine—Decision making. 2. Medical logic.
3. Physicians—Psychology. 1. Title.
R723.5.G75 2007
610—dc22 2006035718
Printed in the United States of America
Book design by Robert Overholtzer
MP
10 9 8 7 6 5 4 3 2 1
The illustration on page 139 is by Michael Prendergast
AUTHOR'S NOTE
In order to protect their privacy, the names and certain identifying
characteristics of all of the patients whose medical histories are
described in this book have been changed. In addition, Dr. Karen
Delgado, Dr. Bert Foyer, Dr. Wheeler, Rick Duggan, and
Drs. A, B, C, D, and E are fictitious names.
FOR MY MOTHER
Ayshet chayil
(
a woman of valor
)
We carve out order by leaving the
disorderly parts out.
—William James
Contents
Introduction
[>]
1. Flesh-and-Blood Decision-Making
[>]
2. Lessons from the Heart
[>]
3. Spinning Plates
[>]
4. Gatekeepers
[>]
5. A New Mother's Challenge
[>]
6. The Uncertainty of the Expert
[>]
7. Surgery and Satisfaction
[>]
8. The Eye of the Beholder
[>]
9. Marketing, Money, and Medical Decisions
[>]
10. In Service of the Soul
[>]
Epilogue: A Patient's Questions
[>]
***
ACKNOWLEDGMENTS
[>]
NOTES
[>]
INDEX
[>]
Introduction
A
NNE DODGE HAD LOST COUNT
of all the doctors she had seen over the past fifteen years. She guessed it was close to thirty. Now, two days after Christmas 2004, on a surprisingly mild morning, she was driving again into Boston to see yet another physician. Her primary care doctor had opposed the trip, arguing that Anne's problems were so long-standing and so well defined that this consultation would be useless. But her boyfriend had stubbornly insisted. Anne told herself the visit would mollify her boyfriend and she would be back home by midday.
Anne is in her thirties, with sandy brown hair and soft blue eyes. She grew up in a small town in Massachusetts, one of four sisters. No one had had an illness like hers. Around age twenty, she found that food did not agree with her. After a meal, she would feel as if a hand were gripping her stomach and twisting it. The nausea and pain were so intense that occasionally she vomited. Her family doctor examined her and found nothing wrong. He gave her antacids. But the symptoms continued. Anne lost her appetite and had to force herself to eat; then she'd feel sick and quietly retreat to the bathroom to regurgitate. Her general practitioner suspected what was wrong, but to be sure he referred her to a psychiatrist, and the diagnosis was made: anorexia nervosa with bulimia, a disorder marked by vomiting and an aversion to food. If the condition was not corrected, she could starve to death.
Over the years, Anne had seen many internists for her primary care before settling on her current one, a woman whose practice was devoted to patients with eating disorders. Anne was also evaluated by numerous specialists: endocrinologists, orthopedists, hematologists, infectious disease doctors, and, of course, psychologists and psychiatrists. She had been treated with four different antidepressants and had undergone weekly talk therapy. Nutritionists closely monitored her daily caloric intake.
But Anne's health continued to deteriorate, and the past twelve months had been the most miserable of her life. Her red blood cell count and platelets had dropped to perilous levels. A bone marrow biopsy showed very few developing cells. The two hematologists Anne had consulted attributed the low blood counts to her nutritional deficiency. Anne also had severe osteoporosis. One endocrinologist said her bones were like those of a woman in her eighties, from a lack of vitamin D and calcium. An orthopedist diagnosed a hairline fracture of the metatarsal bone of her foot. There were also signs that her immune system was failing; she suffered a series of infections, including meningitis. She was hospitalized four times in 2004 in a mental health facility so she could try to gain weight under supervision.
To restore her system, her internist had told Anne to consume three thousand calories a day, mostly in easily digested carbohydrates like cereals and pasta. But the more Anne ate, the worse she felt. Not only was she seized by intense nausea and the urge to vomit, but recently she had severe intestinal cramps and diarrhea. Her doctor said she had developed irritable bowel syndrome, a disorder associated with psychological stress. By December, Anne's weight dropped to eighty-two pounds. Although she said she was forcing down close to three thousand calories, her internist and her psychiatrist took the steady loss of weight as a sure sign that Anne was not telling the truth.
That day Anne was seeing Dr. Myron Falchuk, a gastroenterologist. Falchuk had already gotten her medical records, and her internist had told him that Anne's irritable bowel syndrome was yet another manifestation of her deteriorating mental health. Falchuk heard in the doctor's recitation of the case the implicit message that his role was to examine Anne's abdomen, which had been poked and prodded many times by many physicians, and to reassure her that irritable bowel syndrome, while uncomfortable and annoying, should be treated as the internist had recommended, with an appropriate diet and tranquilizers.
But that is exactly what Falchuk did not do. Instead, he began to question, and listen, and observe, and then to think differently about Anne's case. And by doing so, he saved her life, because for fifteen years a key aspect of her illness had been missed.
This book is about what goes on in a doctor's mind as he or she treats a patient. The idea for it came to me unexpectedly, on a September morning three years ago while I was on rounds with a group of interns, residents, and medical students. I was the attending physician on "general medicine," meaning that it was my responsibility to guide this team of trainees in its care of patients with a wide variety of clinical problems, not just those in my own specialties of blood diseases, cancer, and AIDS. There were patients on our ward with pneumonia, diabetes, and other common ailments, but there were also some with symptoms that did not readily suggest a diagnosis, or with maladies for which there was a range of possible treatments, where no one therapy was clearly superior to the others.
I like to conduct rounds in a traditional way. One member of the team first presents the salient aspects of the case and then we move as a group to the bedside, where we talk to the patient and examine him. The team then returns to the conference room to discuss the problem. I follow a Socratic method in the discussion, encouraging the students and residents to challenge each other, and challenge me, with their ideas. But at the end of rounds on that September morning I found myself feeling disturbed. I was concerned about the lack of give-and-take among the trainees, but even more I was disappointed with myself as their teacher. I concluded that these very bright and very affable medical students, interns, and residents all too often failed to question cogently or listen carefully or observe keenly. They were not thinking deeply about their patients' problems. Something was profoundly wrong with the way they were learning to solve clinical puzzles and care for people.
You hear this kind of criticism—that each new generation of young doctors is not as insightful or competent as its forebears—regularly among older physicians, often couched like this: "When I was in training thirty years ago, there was real rigor and we had to know our stuff. Nowadays, well..." These wistful, aging doctors speak as if some magic that had transformed them into consummate clinicians has disappeared. I suspect each older generation carries with it the notion that its time and place, seen through the distorting lens of nostalgia, were superior to those of today. Until recently, I confess, I shared that nostalgic sensibility. But on reflection I saw that there also were major flaws in my own medical training. What distinguished my learning from the learning of my young trainees was the nature of the deficiency, the type of flaw.
My generation was never explicitly taught how to think as clinicians. We learned medicine catch-as-catch-can. Trainees observed senior physicians the way apprentices observed master craftsmen in a medieval guild, and somehow the novices were supposed to assimilate their elders' approach to diagnosis and treatment. Rarely did an attending physician actually explain the mental steps that led him to his decisions. Over the past few years, there has been a sharp reaction against this catch-as-catch-can approach. To establish a more organized structure, medical students and residents are being taught to follow preset algorithms and practice guidelines in the form of decision trees. This method is also being touted by certain administrators to senior staff in many hospitals in the United States and Europe. Insurance companies have found it particularly attractive in deciding whether to approve the use of certain diagnostic tests or treatments.
The trunk of the clinical decision tree is a patient's major symptom or laboratory result, contained within a box. Arrows branch from the first box to other boxes. For example, a common symptom like "sore throat" would begin the algorithm, followed by a series of branches with "yes" or "no" questions about associated symptoms. Is there a fever or not? Are swollen lymph nodes associated with the sore throat? Have other family members suffered from this symptom? Similarly, a laboratory test like a throat culture for bacteria would appear farther down the trunk of the tree, with branches based on "yes" or "no" answers to the results of the culture. Ultimately, following the branches to the end should lead to the correct diagnosis and therapy.
Clinical algorithms can be useful for run-of-the-mill diagnosis and treatment—distinguishing strep throat from viral pharyngitis, for example. But they quickly fall apart when a doctor needs to think outside their boxes, when symptoms are vague, or multiple and confusing, or when test results are inexact. In such cases—the kinds of cases where we most need a discerning doctor—algorithms discourage physicians from thinking independently and creatively. Instead of expanding a doctor's thinking, they can constrain it.
Similarly, a movement is afoot to base all treatment decisions strictly on statistically proven data. This so-called evidence-based medicine is rapidly becoming the canon in many hospitals. Treatments outside the statistically proven are considered taboo until a sufficient body of data can be generated from clinical trials. Of course, every doctor should consider research studies in choosing a therapy. But today's rigid reliance on evidence-based medicine risks having the doctor choose care passively, solely by the numbers. Statistics cannot substitute for the human being before you; statistics embody averages, not individuals. Numbers can only complement a physician's personal experience with a drug or a procedure, as well as his knowledge of whether a "best" therapy from a clinical trial fits a patient's particular needs and values.
Each morning as rounds began, I watched the students and residents eye their algorithms and then invoke statistics from recent studies. I concluded that the next generation of doctors was being conditioned to function like a well-programmed computer that operates within a strict binary framework. After several weeks of unease about the students' and residents' reliance on algorithms and evidence-based therapies alone, and my equally unsettling sense that I didn't know how to broaden their perspective and show them otherwise, I asked myself a simple question: How should a doctor think?