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Special Article |
1 From the Department of Nutrition Sciences, the University of Alabama at Birmingham.
2 Presented at the 1999 American Society for Clinical Nutrition Annual Meeting in conjunction with Experimental Biology '99, April 17, Washington, DC.
3 Presentation of the Dannon Institute Award for Excellence in Medical/Dental Nutrition Education was supported by the Dannon Institute.
4 Supported in part by the National Cancer Institute (grant CA75200), Nestlé Clinical Nutrition, Mead Johnson Nutritionals, Novartis Nutrition Corporation, and McGaw, Inc.
5 Address reprint requests to DC Heimburger, Department of Nutrition Sciences, University of Alabama at Birmingham, Webb 222, 1530 3rd Avenue S, Birmingham, AL 35294-3360. E-mail: doug.heimburger{at}uab.edu.
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ABSTRACT |
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 TOP ABSTRACT INTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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Key Words: Medical nutrition education • physician nutrition specialist • certification • Intersociety Professional Nutrition Education Consortium
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INTRODUCTION |
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TOPABSTRACTINTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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Studies of nutrition education in medical schools and residencies have established that the presence of qualified and active physician nutrition specialists (PNSs) is critical to effective nutrition teaching (5–8). Indeed, an inadequate number of nutrition-oriented physician role models appears to be the major constraint in teaching nutrition to residents, regardless of specialty (7). The American Society for Clinical Nutrition's Committee on Clinical Practice Issues in Health and Disease reported that there is a vital clinical and educational leadership role for physicians specializing in nutrition in medical school–affiliated training programs (9). The Committee recommended that each academic medical center should have on its faculty at least one, and optimally more than one, PNS with full-time responsibility for nutrition education, to create the necessary learning environment.
Important obstacles impede the needed increase in the pool of PNSs who can fill these roles (10). Among these obstacles are an insufficiently defined PNS career track, including a lack of consensus standards for training (11) and certifying PNSs; inadequate institutional support for PNS faculty positions; poor reimbursement for important components of clinical nutrition practice (eg, obesity management); and the general disease-treatment orientation of modern medicine, as opposed to health promotion and disease prevention. Subspecialty nutrition training is available to physicians, but the number of training programs is small, their orientations vary somewhat, and they typically receive few applications (12).
To encourage the nutrition societies to unite in addressing these issues, the Intersociety Professional Nutrition Education Consortium (IPNEC) was founded in 1997 (10). The consortium's principal aims are to establish educational standards for fellowship training of PNSs and to create a unified mechanism to certify them (Table 1
). Its long-term goals are to increase the pool of PNSs to enable every US medical school to have at least one PNS on its faculty and to identify and surmount obstacles that currently impede the incorporation of nutrition education into the curricula of medical schools and residency programs. These objectives are further outlined in Table 1.
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Key features of this paradigm include the recognition that PNSs emanate from several medical specialties and subspecialties and that PNS training can be obtained as part of training in another subspecialty. There has not been, and will probably never be, a single disciplinary pathway through which all PNSs enter clinical nutrition. The variety of settings within which PNS training can be obtained should make it accessible to a broad array of physicians.
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ROLE DELINEATION SURVEY |
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TOPABSTRACTINTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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Demographic information
Respondents of the role delineation survey resided in the following regions: New England and middle states (31%), midwest and north central states (27%), southeast and south central states (24%), western states (15%), and other (3%). Most (57%) of the respondents practiced in cities with a population >500000, 23% in cities with a population of 100000–500000, and 17% in cities with a population <100000 (3% missing responses). The respondents' specialties and subspecialties are listed in Table 2. Internists, pediatricians, and surgeons were well represented, but family practitioners were less well sampled. The major subspecialties were gastroenterology, critical care, and endocrinology; there were few nephrologists and cardiologists. About half of the critical care specialists were surgeons and most of the remainder were internists. More than half of the gastroenterologists reported a background in internal medicine and nearly half listed a background in pediatrics. Additional board certifications were held by 22% of the respondents, the most common being for geriatrics, neonatology, and preventive medicine.
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. Only 30% of the respondents had certification, principally those of the American Board of Nutrition and the National Board of Nutrition Support Certification. Nutrition society memberships reflect the mailing lists used to conduct the survey, with the largest proportions belonging to the American Society for Parenteral and Enteral Nutrition, The American Society for Clinical Nutrition, and the American College of Nutrition. Substantial numbers also belonged to the American Gastroenterological Association, the Society of Critical Care Medicine, and the North American Association for the Study of Obesity. Many respondents belonged to 
2 of the societies.
Formal nutrition training after medical school was reported by 56% of the respondents (22% had received 1–12 mo of training and 34% >12 mo of training), but 41% had completed no formal nutrition training (3% missing responses). Most of the respondents had substantial experience in medical practice: 59% had 16 y experience, 33% had 6–15 y experience, and only 7% had 
5 y experience (1% missing responses). Experience in medical nutrition practice was also substantial: 48% had 16 y experience, 35% had 6–15 y experience, and 15% had 0–5 y experience (1% missing responses).
Although two-thirds of the respondents treated only adults, 24% treated predominantly children and 5% treated both adults and children. Fifty-two percent of the respondents worked primarily in university hospitals, 19% in community teaching hospitals, and smaller numbers in community nonteaching hospitals and ambulatory care settings. Although 45% were employed by medical schools, substantial numbers were in group or solo practices (Table 2).
About 92% of the respondents indicated at least some current effort devoted to nutrition; 35% devoted most of their time to nutrition (Table 3). Most of the respondents spent 20% of their effort on direct nutrition-related patient care and only 10% devoted most of their time to nutrition-related patient care. Of the physicians who provided direct nutrition-related patient care, 59% received some type of formal nutrition training after medical school and 30% had some type of nutrition certification. Of the physicians who spent >20% of their effort in direct nutrition-related patient care, 68% received some type of formal nutrition training after medical school and 40% had some type of nutrition certification.
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). Of the physicians who devoted any effort to providing medical nutrition education, 59% received some type of formal nutrition training after medical school and 31% had some type of nutrition certification. Of the few physicians with >20% of their effort in this activity, 65% received some type of formal nutrition training after medical school and 22% had some type of nutrition certification.
Role delineation
The survey instrument contained a list of 76 nutrition content items and clinical tasks that might be required by physicians engaged in nutrition care. Respondents were asked to provide their judgments regarding the importance of each content item and clinical task and the frequency with which they encounter it in their clinical practice. The items were divided into 9 categories. Importance was rated on the following 4-point scale: not important, 1; minimally important, 2; moderately important, 3; and very important, 4. Frequency was rated on the following 4-point scale: never, 1; infrequently (<3 times/y), 2; frequently (3–11 times/y), 3; and very frequently (12 times/y), 4. The frequency variable was flawed because it elicited responses based on absolute numbers of encounters per year, and respondents were not asked to adjust their responses on the basis of their total percentage nutrition effort. Thus, physicians who spend most of their time practicing clinical nutrition (although this was uncommon) would probably encounter relatively infrequent topics more times per year than would physicians who spend only 10% of their time practicing clinical nutrition. Because of this, frequency was given less weight than importance in the data analysis.
Descriptive statistics were generated with and without stratification for region, community size, formal nutrition training after medical school, years of experience in medical nutrition practice, percentage nutrition effort, practice population, and practice setting. Responses did not vary significantly across regions, community sizes, years of experience, percentage nutrition effort, or practice settings. As might be expected, items related solely to adult or pediatric practice populations were rated differently by persons serving those populations, especially with regard to frequency.
Decision rules developed by IPNEC members based on importance and frequency ratings and respondents' practice populations, duration of training, and percentage nutrition effort were applied to determine which of the 76 items should be included in a PNS content outline. This process eliminated 8 items. The 68 remaining items were then rank-ordered by the sums of their importance and frequency ratings and divided into quartiles. Items in the first quartile were given weights of 4, items in the second quartile weights of 3, items in the third quartile weights of 2, and items in the fourth quartile weights of 1. Each of the 9 categories was then given a composite weight from the weights of its individual items, and this was expressed as a percentage of the total weights of all the items. The individual items and their scores are shown in Table 4, in descending order of combined importance plus frequency, grouped into weighted quartiles.
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3 potential weaknesses, of which 2 were mentioned previously (possible underrepresentation of family practitioners and an inability to adjust the frequency variable for the percentage effort in clinical nutrition practice). Additionally, the content items may not have been worded to optimally capture disease prevention topics and activities. Judgments on the importance of these areas were probably embedded in responses to generically worded items, such as those related to lipids, vitamins, minerals, and obesity. |
PROPOSED PNS TRAINING STANDARDS |
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TOPABSTRACTINTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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Eligibility for training
To be eligible to enter fellowship training in the subspecialty of clinical nutrition, IPNEC proposes that a physician must have completed categorical residency training. Although this will generally be in pediatrics, family medicine, internal medicine, or general surgery, physicians with other backgrounds may be considered. Schedules permitting, physicians who are enrolled in fellowship programs in subspecialties such as adult or pediatric gastroenterology, endocrinology, critical care, nephrology, or cardiology may pursue nutrition training integrated within their major subspecialty fellowship program.
Program requirements for fellowship training in clinical nutrition
Educational program
A subspecialty education program in clinical nutrition must provide training and experience at a sufficient level for the fellow to acquire competency as a specialist in the field. IPNEC proposes that training must comprise a minimum of 6 mo of mentored clinical experience and formal instruction, either as a block or as an equivalent amount of time (1000 h) integrated among other duties over a longer time period. We emphasize that this should be considered a minimum duration; longer training should be undertaken when possible to provide optimal exposure. No less than 20% of the clinical experience should be gained in inpatient settings and no less than 20% in outpatient settings (eg, 1 d/wk over 6 mo or 0.5 d/wk over 1 y).
Facilities and resources
Modern facilities and services, including inpatient, ambulatory care, and laboratory resources, must be available and functioning. Specifically, there must be a complete biochemistry laboratory, interdisciplinary nutrition support service, indirect calorimetry equipment, body-composition assessment facility, dietary service, and medical and surgical intensive care unit.
Specific program content
Clinical experience.
The training program must provide opportunities for fellows to develop clinical competence in the field of clinical nutrition. Clinical experience must include opportunities to observe and manage a sufficient number of new and follow-up inpatients and outpatients of all ages, including children and older adults, of both sexes and with a wide variety of common and uncommon nutrition-related disorders. The program must be supervised by physicians and care must be provided by an interdisciplinary team, such as a nutrition support service including registered dietitians, other appropriate health care professionals, or both. The program must include opportunities to function in the role of a clinical nutrition consultant for other physicians and services in both inpatient and outpatient settings.
Fellows should have formal instruction, clinical experience, or opportunities to acquire expertise in the evaluation, nutritional management, and prevention of the following disorders: malnutrition, obesity, eating disorders, diabetes mellitus, hypertension, cardiovascular diseases, dyslipidemias, gastrointestinal and liver disorders, cancer, renal disorders, osteoporosis, hematologic disorders, pulmonary disorders, and immune disorders (HIV infection and transplants).
Fellows should have formal instruction, clinical experience, or opportunities to acquire expertise in the evaluation, management, and prevention of the following clinical problems: stress states, hypometabolic and starvation states, refeeding syndrome, drug-nutrient interactions, fluid and electrolyte management, interpretation of laboratory values, and nutritional access device problems.
Technical and other skills.
The program must provide for instruction in the indications, contraindications, complications, limitations and, where applicable, interpretation of the following diagnostic and therapeutic techniques and procedures: nutritional assessment (medical history including diet, physical examination, and laboratory interpretation), methods for assessing energy expenditure and body composition, dietary counseling, feeding devices, and enteral and parenteral nutrition support in both inpatient and outpatient settings.
Formal instruction.
The program must, at a minimum, ensure that fellows receive formal instruction in the following areas: nutritional assessment and interventions and therapies, including complementary and alternative nutrition therapies; macronutrients and micronutrients in health and disease, including metabolism, absorption, and utilization, as well as signs, symptoms, and management of deficiencies and excesses; nutrition through the life cycle; health promotion and disease prevention; and ethical issues in nutrition. This instruction may be in the form of lectures, conferences, seminars, or formal self-study programs or in other settings or locations, including previous or concomitant dietetic or graduate training in nutrition.
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CONCLUSIONS |
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TOPABSTRACTINTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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The members of IPNEC look forward to playing an important long-term role in nutrition education. In keeping with this, we intend to continue soliciting broad input, especially from directors of fellowships in nutrition and closely related subspecialties; to develop a detailed curriculum guide for nutrition fellowships or fellowships in related subspecialties; and to initiate a unified PNS certification examination. If we build a strong PNS track, it will surely increase the likelihood that "they will come!"
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REFERENCES |
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TOPABSTRACTINTRODUCTIONROLE DELINEATION SURVEYPROPOSED PNS TRAINING STANDARDSCONCLUSIONSREFERENCES |
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