Case Report: Serum methotrexate monitoring by immunoassay: confusion by by-product, confusion by antidote.

Methotrexate is a commonly used agent in the treatment of many malignancies and rheumatologic/inflammatory diseases. Working by inhibiting dihydrofolate reductase and thereby preventing eventual formation of tetrahydrofolate, methotrexate inhibits synthesis of purines and thymidylate, therefore disabling a malignant cell's ability to replicate. While it is able to effectively do this, methotrexate also holds potential for significant toxicity. Therefore, serum methotrexate monitoring is of utmost importance when administering the drug, particularly when high doses are used. Although there are several different measurement systems, the immunoassay is a commonly used monitoring system that may be prone to interference when using agents with similar carbon backbone as methotrexate, including folinic acid (leucovorin) at high doses, as well as in the setting of glucarpidase use and consequent methotrexate breakdown. However, adjusting leucovorin dosing policy and being aware of the potential of the immunoassay to be "confused" by similar molecules have allowed for the efficient and effective use of the immunoassay while preventing prolonged hospital stays at our institution.

Symptomatic Lead Toxicity and Joint Pain Because of Migration of Shotgun Pellets into the Hip 12 Years After Injury: A Case Report.

CASE: We describe a case of mild lead poisoning in a 25-year-old woman because of intra-articular migration of lead shot 12 years after gunshot injury to the left hip, ameliorated by arthroscopic foreign body removal. Retained lead can cause systemic symptoms of lead toxicity, supranormal blood lead concentration, and increasingly painful and destructive local arthritis even years after gunshot injury. CONCLUSION: This report shows that lead fragments should be monitored closely if located near joint spaces. We demonstrate curative therapy for lead poisoning through the use of minimally invasive arthroscopic techniques for removal of retained intra-articular lead missiles.

Building experiential learning about quality improvement into a medical school curriculum: the Dartmouth experience.

Educators have struggled with the best ways to teach the knowledge and skills of quality improvement to medical students. Dartmouth Medical School has a decade of experience incorporating this material into its curriculum. Working with faculty coaches, twenty-two second-year students have completed nine clinical improvement projects over the past four years. Students' input has improved processes in our clinics for the collection of samples and scheduling of appointments. Instituting these changes is complex and requires a careful evaluation that describes and understands the educational context in order to establish successful and enduring curricular reform.

Akathisia after mild traumatic head injury.

The authors describe the case of a 13-year-old boy who exhibited progressive disabling motor restlessness, torticollis, urinary symptoms, and confusion following a fall from a bicycle. The differential diagnosis of this striking symptom complex in this clinical context can be problematic. In this case, the symptoms ultimately appeared most consistent with severe akathisia resulting from a single administration of haloperidol used at an outside hospital to sedate the patient prior to a head CT scan. The literature on akathisia in pediatric patients, and especially in patients following acute head injury, is reviewed, with suggestions for an approach to these symptoms in this clinical setting.

Student experiences with competency domains during a psychiatry clerkship.

OBJECTIVES: The authors reviewed medical student encounters during 3 years of a required psychiatry clerkship that were recorded on a web-based system of six broad competency domains (similar to ACGME-recommended domains). These were used to determine diagnoses of patients seen, clinical skills practiced, and experiences in interpersonal and communications skills, professionalism, practice-based learning and improvement, and system-based practice. The authors aim to understand how students are learning and growing in these domains and to modify the clerkship in an ongoing manner. METHODS: Data were collected from the Dartmouth Medical Encounter Documentation System (DMEDS) for all student encounters in required third-year psychiatry clerkships during academic years 2004-2007, in which students had intensive involvement in patient care. RESULTS: One hundred seventy three students reported a total of 4,676 patient encounters, averaging 27.2 encounters per student and 1.8 psychiatric diagnoses per patient. Students met "learning targets" for anxiety disorder, bipolar affective disorder, depression, personality disorder (borderline), posttraumatic stress disorder, psychosis, schizophrenia, and substance abuse (alcohol), but not for disorders more likely seen in outpatient settings. For the 10 counseling skills learning targets, students only met those for family issues. In the four "newer" competency domains, students reported struggling with issues in 0.3% to 12.6% of encounters. Students documented being challenged by professionalism issues most often and recorded examples of how these competencies played out for them during the clerkship. CONCLUSION: Use of a required web-based medical encounter reporting system for student-patient-faculty encounters during a psychiatry clerkship can be of significant value in assessing what students are seeing, doing, and learning on this required third-year experience. The results provide helpful current information to the clerkship director and data that help the director modify the clerkship on an ongoing basis to better meet students' educational needs.

A web-based system for students to document their experiences within six core competency domains during all clinical clerkships.

The authors describe the design and implementation of a new Web-based system that allows students to record important features of their clinical encounters during all 10 required clinical clerkships, document their learning experiences in six major competency domains, and generate detailed real-time reports for themselves and their clerkship directors. A new Web-based system, DMEDS (Dartmouth Medical Encounter Documentation System), accepts input from computers and PDAs. Its design permits students to describe their patients, learning sites, interactions with preceptors, and important aspects of their clinical encounters in all of our medical school's competency domains. Using a common format for all required clerkships, clerkship directors select specific items most relevant to their clerkships from a common menu and set learning targets for specific diagnoses and clinical skills. This new system was designed in the fall of 2003, tested in the spring of 2004, and implemented in all clerkships for the 2004 to 2005 academic year. During the first full academic year that DMEDS was used, students documented nearly 32,000 discrete student-patient-preceptor encounters, an average of between 21 and 120 clinical encounters per Year 3 clerkship. Highlights of the analysis of these initial data include the following: (1) insights into how educational targets are set, (2) the extent of site-to-site variation in clerkship experiences, (3) the epidemiology of patients' declining student involvement, and (4) student experiences in and understanding of the newer competency domains.DMEDS can be used in all clinical clerkships and can address student experiences in all competency domains. It provides substantial value to students, clerkship directors, preceptors, and medical school administrators. As secondary benefits, the authors found that DMEDS facilitates educational research and is readily adapted for use in residency and fellowship programs as well. Student feedback highlights the need to pay close attention to the time invested by students documenting their clinical encounters. Course directors must ensure that the benefits to students (such as knowledge of meeting learning targets and preceptors providing direct feedback to students) are transparent. Finally, for other schools contemplating the change to a competency-based curriculum with the use of a clinical encounter documentation system, the time required for both students and faculty to adopt and fully engage these major educational culture shifts seems to be at least several years.

Preclinical preceptorships in medical school: can curricular objectives be met in diverse teaching settings?

BACKGROUND: Although preclinical preceptorships for medical students during the first 2 years are now common, little is known about how well the curricular objectives can be met in clinical training sites. PURPOSE: To evaluate whether a clinical encounter system can help align preclinical preceptorship experiences with the core curriculum. METHODS: Using a PDA documentation system, 27 students collected student-preceptor-patient encounter information on all patients (N = 2,953) during a 2-year clinical training course. We compared Years 1 and 2 teaching and learning processes, common symptoms seen, and counseling skills performed and examined how well these clinical experiences aligned with the curricular goals. RESULTS: The majority of encounters in Year 1 involved the student observing the preceptor perform a history (47%) or physical exam (40%). In Year 2, there was a shift to student and preceptor both participating in the history (Year 1, 12%; Year 2, 24%; p = .004) and physical exam (Year 1, 34%; Year 2, 47%; p = .002). Cardiovascular; pulmonary; and head, eyes, ears, nose, and throat examinations were most common in Year 1 and increased in Year 2. Genitourinary, gynecologic, and neurological examinations occurred least often, and only the neurological examinations increased significantly in Year 2. Overall, at least 75% of students could find opportunities in Years 1 and 2 to achieve the majority of curricular goals. CONCLUSIONS: Knowing what students experience at their preceptor sites is vital for clinical skills course evaluation. Student-preceptor-patient encounter data should be used to complement other course evaluations to aid curriculum planning and decrease variability in student experiences.

Nurturing educational research at Dartmouth Medical School: the synergy among innovative ideas, support faculty, and administrative structures.

In recent years, Dartmouth Medical School has increased its commitment to educational research within the school, and in collaboration with other schools across the country. Passionate faculty members with ideas and expertise in particular curricular areas are one critical component needed for a successful educational research program. Other components include an atmosphere that fosters research collaborations and mentoring, and various types of institutional support structures. This same model has effectively supported basic science and clinical research for decades. Because of the complexities involved in studying medical education, Dartmouth Medical School has invested in support structures for educational grant and manuscript development, financial support for pilot projects and partial salary support for investigators and key staff members, and other support targeted toward specific research projects. Ultimately, the goal is to use the results of the school's educational research projects to improve the curriculum through cycles of hypothesis development and testing, providing evidence for subsequent curricular change. When some research findings are relevant and applicable for use in other medical schools, that is an additional benefit of the educational research process. In this report, the authors describe the development of Dartmouth Medical School's infrastructure for supporting educational research, which has helped to accelerate the educational research productivity teaching faculty now enjoy. The authors also address some of the challenges that they anticipate in the near future.

Educational epidemiology: applying population-based design and analytic approaches to study medical education.

Conducting educational research in medical schools is challenging partly because interventional controlled research designs are difficult to apply. In addition, strict accreditation requirements and student/faculty concerns about educational inequality reduce the flexibility needed to plan and execute educational experiments. Consequently, there is a paucity of rigorous and generalizable educational research to provide an evidence-guided foundation to support educational effectiveness. "Educational epidemiology," ie, the application across the physician education continuum of observational designs (eg, cross-sectional, longitudinal, cohort, and case-control studies) and randomized experimental designs (eg, randomized controlled trials, randomized crossover designs), could revolutionize the conduct of research in medical education. Furthermore, the creation of a comprehensive national network of educational epidemiologists could enhance collaboration and the development of a strong educational research foundation.

Computer use among community-based primary care physician preceptors.

PURPOSE: Use of the Internet to access biomedical information in patient care has important implications in medical education. Little is known about how community-based clinical teachers use computers in their offices and what factors, such as age, may influence use. METHOD: A total of 178 active community-based primary care preceptors were mailed a 15-item questionnaire about their computer equipment; Internet use; and specific applications in patient care, patients' education, medical students' or residents' education, or accessing other clinical and/or research information. Data analysis used descriptive statistics, chi-square for comparisons of categorical data and analysis of variance (ANOVA) mixed model for comparisons of continuous variables. All tests were two-tailed with alpha set at.05 to determine statistical significance. RESULTS: In all, 129 preceptors responded (73%). Office computer availability was high (92%). The Internet as a clinical information resource was used most frequently (98%) and MD Consult and Medline-EBM were used less frequently (20% and 21%, respectively). No statistical differences were found in routine use by age of preceptor; frequency of use did differ. Preceptors 60 years or older were four times more likely to use the Internet to assist in students' and residents' education (p =.02) and at least twice as likely to use full text Medline articles for patient care decisions (p =.05) than their younger colleagues. Decreased computer use was related to lack of time (45%) or other logistical reasons (40%), such as the computer's distance from the patient care areas or slow connections. CONCLUSIONS: Rates of computer access and Internet connectivity were high among community-based preceptors of all ages. Uses of specific online clinical and/or educational resources varied by preceptors' age with more rather than less use among older preceptors, an unexpected finding.

Ambulatory care education: how do academic medical centers, affiliated residency teaching sites, and community-based practices compare?

PURPOSE: Little is known about how different ambulatory sites compare as clinical educational settings. The authors used students' log data to compare the educational content and processes in academic medical center-based clinics (AMCs), affiliated residency teaching sites (ARTs), and local community-based practices (CBPs) at one medical school. METHOD: Students recorded their experiences with symptoms, counseling, procedures, and common medical conditions as well as characteristics of the learning process during a required eight-week third-year ambulatory clerkship in family medicine. Descriptive statistics, chi-square for differences in categorical variables, and analysis of variance and multivariate analysis of variance for differences in continuous variables were used to compare the educational settings. RESULTS: Over 9,000 encounters were analyzed; 29.7% occurred in AMCs, 14.8% in ARTs, and 55.5% in CBPs. The proportion of continuity visits was lowest in the AMCs and highest in CBPs (13% versus 22%, respectively; p <.01). Students saw almost 57,000 symptoms and conditions. Of 19 symptoms compared, seven differed significantly among the three settings: back pain, cough, dyspnea, ENT (ears, nose, throat problems), fatigue, knee pain, and vomiting. All but one of these were least likely to occur in ARTs. Procedures were performed more frequently, whereas counseling skills were called upon less frequently in CBPs. Students reported being more likely to work unobserved while conducting physical examinations in ARTs and CBPs. Amount of feedback provided on clinical skills did not differ, but students reported receiving more teaching about patient management in ARTs and AMCs versus CBPs (74%, 72%, and 66% of encounters, respectively; p <.01). CONCLUSIONS: Academic and community settings can complement each other as learning sites for an ambulatory clerkship in family medicine, and common curricular expectations can be achieved. Settings' differences and similarities should be taken into account when developing, implementing, or revising clerkship programs and should be considered with students' interests and previous clinical experiences before assigning students to a teaching site.

Development of a handheld computer documentation system to enhance an integrated primary care clerkship.

Documentation systems are used by medical schools and residency programs to record the clinical experiences of their learners. The authors developed a system for their school's (Dartmouth's) multidisciplinary primary care clerkship (family medicine, internal medicine, pediatrics) that documents students' clinical and educational experiences and provides feedback designed to enhance clinical training utilizing a timely data-reporting system. The five critical components of the system are (1) a valid, reliable and feasible data-collection instrument; (2) orientation of and ongoing support for student and faculty users; (3) generation and distribution of timely feedback reports to students, preceptors, and clerkship directors; (4) adequate financial and technical support; and (5) a database design that allows for overall evaluation of educational outcomes. The system, whose development began in 1997, generated and distributed approximately 150 peer-comparison reports of clinical teaching experiences to students, preceptors, and course directors during 2001, in formats that are easy to interpret and use to individualize learning. The authors present report formats and annual cost estimate comparisons of paper- and computer-based system development and maintenance, which range from $35,935 to $53,780 for the paper-based system and from $46,820 to $109,308 for the computer-based system. They mention ongoing challenges in components of the system. They conclude that a comprehensive documentation and feedback system provides an essential infrastructure for the evaluation and enhancement of community-based teaching and learning in primary care ambulatory clerkships, whether separate or integrated.

A collaborative model for supporting community-based interdisciplinary education.

Development and support of community-based, interdisciplinary ambulatory medical education has achieved high priority due to on-site capacity and the unique educational experiences community sites contribute to the educational program. The authors describe the collaborative model their school developed and implemented in 2000 to integrate institution- and community-based interdisciplinary education through a centralized office, the strengths and challenges faced in applying it, the educational outcomes that are being tracked to evaluate its effectiveness, and estimates of funds needed to ensure its success. Core funding of $180,000 is available annually for a centralized office, the keystone of the model described here. With this funding, the office has (1) addressed recruitment, retention, and quality of educators for UME; (2) promoted innovation in education, evaluation, and research; (3) supported development of a comprehensive curriculum for medical school education; and (4) monitored the effectiveness of community-based education programs by tracking product yield and cost estimates needed to generate these programs. The model's Teaching and Learning Database contains information about more than 1,500 educational placements at 165 ambulatory teaching sites (80% in northern New England) involving 320 active preceptors. The centralized office facilitated 36 site visits, 22% of which were interdisciplinary, involving 122 preceptors. A total of 98 follow-up requests by community-based preceptors were fulfilled in 2000. The current submission-to-funding ratio for educational grants is 56%. Costs per educational activity have ranged from $811.50 to $1,938, with costs per preceptor ranging from $101.40 to $217.82. Cost per product (grants, manuscripts, presentations) in research and academic scholarship activities was $2,492. The model allows the medical school to balance institutional and departmental support for its educational programs, and to better position itself for the ongoing changes in the health care system.

An analysis of students' clinical experiences in an integrated primary care clerkship.

PURPOSE: Combining complementary clinical content into an integrated clerkship curriculum should enhance students' abilities to develop skills relevant to multiple disciplines, but how educational opportunities in primary care ambulatory settings complement each other is unknown. The authors conducted an observational analytic study to explore where opportunities exist to apply clinical skills during a 16-week integrated primary care clerkship (eight weeks of family medicine, four weeks of ambulatory pediatrics, and four weeks of ambulatory internal medicine). METHOD: Using handheld computers, students recorded common problems, symptoms, and diagnoses they saw. The students also recorded information about the educational process of the clerkship. Two data files were created from the database. Descriptive statistics were used to characterize the students' clerkship experiences, and ANOVA was used to evaluate differences among these blocks within the clerkship. RESULTS: Students encountered different frequencies of presenting symptoms, the majority of which occurred in pediatrics (23.2 per student per week versus 16.3 in medicine and 16.8 in family medicine; p =.01). Students provided more behavioral change counseling in family medicine (5.2 episodes per student per week versus 4.2 and 2.0 in internal medicine and pediatrics, respectively; p =.01), and they performed more clinical procedures in family medicine (1.9 per student per week versus 0.6 and 1.1 in pediatrics and internal medicine, respectively; p =.001). Students were more likely to encounter specific conditions in internal medicine (35.3 per student per week versus 30.0 and 21.4 in family medicine and pediatrics, respectively; p =.01). Elements of the teaching and learning processes also differed by clerkship. CONCLUSIONS: Very little overlap was found in symptoms, conditions, procedures, and other educational opportunities in the ambulatory pediatrics, internal medicine, and family medicine blocks that constitute the integrated primary care clerkship. The blocks provided different and complementary learning opportunities for students. These findings will assist in clerkship planning and in guiding students to seek opportunities that will ensure educational excellence.

Neuropathologic lesions and CSF morphine concentrations during chronic continuous intraspinal morphine infusion. A clinical and post-mortem study.

Seven patients with chronic intractable pain due to cancer were given chronic intraspinal narcotic administration (CINA) and subsequently underwent post-mortem examination. All deaths were unrelated to CINA. Two of these patients were found to have clinically unsuspected posterior column degeneration. Both patients had had epidural catheters placed, and one had received prior radiotherapy to ports which included parts of the spinal cord. In retrospect, it is impossible to ascertain whether the degeneration occurred before or after infusion of morphine began. Review of the potential causes for posterior column degeneration suggests that neuropathy associated with malignant disease is more likely the cause of the degeneration rather than intraspinal infusion of morphine. However, continued vigilance at autopsy is recommended. In addition, utilizing a new method for measuring cerebrospinal fluid (CSF) concentrations of morphine via high-pressure liquid chromatography, CSF morphine levels at steady state were measured in 5 patients. These levels were much lower than peak levels previously reported following bolus intraspinal administration. The ability of these measurements to contribute to knowledge of efficacy, toxicity, lumbar-cisternal concentration gradients, and differentiation of tolerance from drug delivery problems is discussed.