Information about liver transplantation on the World Wide Web

Orthotopic liver transplant (OLTx) has evolved to a successful surgical management for end-stage liver diseases. Awareness and information about OLTx is an important tool in assisting OLTx recipients and people supporting them, including non-transplant clinicians. The study aimed to investigate the nature and quality of liver transplant-related patient information on the World Wide Web. Four common search engines were used to explore the Internet by using the key words 'Liver transplant'. The URL (unique resource locator) of the top 50 returns was chosen as it was judged unlikely that the average user would search beyond the first 50 sites returned by a given search. Each Web site was assessed on the following categories: origin, language, accessibility and extent of the information. A weighted Information Score (IS) was created to assess the quality of clinical and educational value of each Web site and was scored independently by three transplant clinicians. The Internet search performed with the aid of the four search engines yielded a total of 2,255,244 Web sites. Of the 200 possible sites, only 58 Web sites were assessed because of repetition of the same Web sites and non-accessible links. The overall median weighted IS was 22 (IQR 1 - 42). Of the 58 Web sites analysed, 45 (77%) belonged to USA, six (10%) were European, and seven (12%) were from the rest of the world. The median weighted IS of publications originating from Europe and USA was 40 (IQR = 22 - 60) and 23 (IQR = 6 - 38), respectively. Although European Web sites produced a higher weighted IS [40 (IQR = 22 - 60)] as compared with the USA publications [23 (IQR = 6 - 38)], this was not statistically significant (p = 0.07). Web sites belonging to the academic institutions and the professional organizations scored significantly higher with a median weighted IS of 28 (IQR = 16 - 44) and 24(12 - 35), respectively, as compared with the commercial Web sites (median = 6 with IQR of 0 - 14, p = .001). There was an Intraclass Correlation Coefficient (ICC) of 0.89 and an associated 95% CI (0.83, 0.93) for the three observers on the 58 Web sites. The study highlights the need for a significant improvement in the information available on the World Wide Web about OLTx. It concludes that the educational material currently available on the World Wide Web about liver transplant is of poor quality and requires rigorous input from health care professionals. The authors suggest that clinicians should pay more attention to take the necessary steps to improve the standard of information available on their relevant Web sites and must take an active role in helping their patients find Web sites that provide the best and accurate information specifically applicable to the loco-regional circumstances.     

Advances in development and evaluation of asthma education programs

PURPOSE OF REVIEW: Effective asthma education requires more than merely providing information on asthma. Behavior change and learning principles must be incorporated into educational programs. However, there remains much debate and research about the most effective strategies to educate people to deal effectively with their asthma. This article focuses on recent advances in theoretical and practical strategies and examines core elements of successful asthma education programs. RECENT FINDINGS: Asthma education has improved in recent years as a result of application of evidence-based, theoretical principles that guide learning and behavior modification. Many studies show a refreshing focus on how to teach and have made substantial contributions to testing educational theories and making meaningful improvements to those with asthma. Successful asthma education programs include behavior change strategies, shared care practices and communication skills, a clear educational process, tailoring to client needs and influencing factors, multiple teaching formats, and a continuum of care. SUMMARY: An array of effective and innovative asthma education programs have been developed and tested. However, numerous areas in asthma education require improvement and further research, such as real-world models, sensitivities to underserved populations or venues, innovative partnerships, continuum of care, and patient incentive/participation.     

Asthma education in the Emergency Department. On behalf of the MARC Investigators

STUDY OBJECTIVE: We surveyed emergency department-based asthma researchers to study the presence of formal asthma education programs (AEPs), and examined data from prospective cohort studies to compare sites with and without AEPs. METHODS: We contacted site investigators in the Multicenter Airway Research Collaboration (MARC) in July 1998 by mail, fax, or telephone. Main outcomes were the percentage of sites using AEPs and the percentage of AEPs using each of 7 "key" teaching items in national guidelines. MARC data provided site and patient characteristics. RESULTS: All 77 site investigators (100%) responded to the survey. Using a scale from 1 to 5 (mean+/-SD), respondents identified instruction in proper inhaler technique (4.8+/-0.5), "spacer" use (4.3+/-0.7), recognition of asthma triggers (4.3+/-0.8), and rationale for medications (4. 6+/-0.6) as priorities for teaching. Twelve sites (16%; 95% confidence interval [CI] 8% to 26%) had AEPs; most (8) were at pediatric sites. Patients presenting to sites with AEPs were younger (22+/-16 years versus 25+/-15 years, P <.001), more likely to be uninsured (26% versus 23%, P <.001), and less likely to be taking inhaled corticosteroids (30% versus 37%, P <.001). AEP sites uniformly stressed "key" items, except for "written action plan" (50% of sites) and "peak flow diary" (33% of sites). CONCLUSION: Although asthma researchers agree that patient education is very important, few EDs involved in asthma research use AEPs. Sites with AEPs appear to serve patients at higher risk of poor asthma outcomes. Further study is needed to address the effectiveness of AEPs in the ED.     

Accessibility compliance rates of consumer-oriented Canadian health care Web sites

Vast amounts of consumer-based health care information are widely available on the World Wide Web. However, for some this material is inaccessible due to reliance on specialized computer equipment or software known as assistive technology. These tools, designed for people with sensory, physical, or learning disabilities, act as a median to interpret Web pages in accessible ways. Unfortunately, many websites, including those with health-related content are not designed to accommodate this equipment. No research has yet been published examining the extent of this problem in Canadian consumer-oriented health care sites. The purpose of this study was to investigate the percentage of accessible consumer-based health care websites of Canadian origin. A listing of such sites was randomly sampled for study inclusion. Each was assessed for accessibility based on the World Wide Web Consortium (W3C) Web Accessibility Initiative (WAI) Web Content Accessibility Guidelines (WCAG) 1.0 using the validation software Bobby. The results indicated that only about 40% of pages investigated were free of errors in accordance with WCAG 1.0 Priority 1 level. Websites should be constructed in compliance with these standards to better accommodate those using assistive devices.     

Providing disease-related information worsens health-related quality of life in inflammatory bowel disease

BACKGROUND: Patients with inflammatory bowel disease (IBD) have identified a need for more information about their disease. PURPOSE: To assess the effect of an educational intervention on health-related quality of life (HRQOL) in patients with IBD. METHODS: Consecutive ambulatory IBD patients were randomized to receive four IBD-specific educational booklets or usual care. Subjects completed two disease-specific HRQOL questionnaires-the Inflammatory Bowel Disease Questionnaire (IBDQ) (range 1-poor to 7-excellent) and the Quality Index in Crohn's and Colitis (QuICC) (range 1-excellent to 5-poor) at entry and after 2 weeks. The mean change in HRQOL scores at follow-up was compared between the education and control groups. RESULTS: 59 subjects participated, with a mean age of 40.0 +/- 11.9 years. 34 were given educational booklets and 25 received standard care. 6 patients (10%) did not complete the study. Mean IBDQ scores became significantly worse in the education group with a change of -0.17 +/- 0.49 compared with controls at +0.28 +/- 0.62 (p = 0.006). This could be explained by worsened disease activity in the education group. There was no significant change in the QuICC scores (p = 0.61). Education group patients who had not received prior educational material had improved mean IBDQ scores of +0.24 +/- 0.47 compared with education patients who had received educational material prior to this study, with a score change of -0.25 +/- 0.46 (p = 0.09). CONCLUSIONS: The addition of educational booklets to IBD patients in a tertiary center does not improve, and may worsen, short-term HRQOL. Education of newly diagnosed or less informed patients should be studied further.     

Use of PEEP in management of life-threatening status asthmaticus: a method for the recovery of appropriate ventilation-perfusion ratio.

In 15 patients with asthma attack, evidence of the uneven distribution of air flow during controlled ventilation was obtained by detection of ventilatory asynchronism expressed by the incurvated profile of tracheal pressure waves associated with the repetitive interruptions of air flow. It was observed that low values of PEEP (mean: 5 +/- 2.5 cm H 2O) induced an increase in transbronchial pressure able to overcome ventilatory asynchronism. In these conditions, an appropriate ventilation-perfusion ratio was restored and improved gas exchanges as indicated by the mean increase of arterial PO 2 from 66.3 mmHg (+/- 2.57) to 96.89 mmHg (+/- 4.41) (p = 0.0005) associated with a mean decrease in arterial PCO 2 from 53.66 mmHg (+/- 2.71) to 42.07 mmHg (+/- 1.64) (p = 0.0005). Simultaneously hemoglobin oxygen saturation rose from 82.31% (+/- 1.97%) to 95.74% (+/- 0.5%). In our patients, such values of PEEP were not high enough to influence the pulmonary arterial circulation. The means of the pulmonary arterial pressures obtained before (syst.: 32.3; diast.: 15.1; mean: 22.00 mmHg) were quite the same (p greater than 0.2) as with PEEP (syst.: 32.00; diast.: 14.00; mean: 21.1 mmHg). The mean of the wedge pressure was found to be 8.3 (+/- 74 mmHg) prior to and 8.4 (+/- 0.68 mmHg) after PEEP (p greater than 0.3). Mean cardiac output rose slightly from 5.27 l/min (+/- 0.24) to 5.77 l/min (+/- 0.38) during PEEP (p = 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)     

Evaluation of long-term efficacy of an asthma education programme in an out-patient clinic

The aim of the present study was to evaluate long-term efficacy of a patient education programme in an asthma out-patient clinic. The study included two groups. Educational group consisted of 25 patients who were given special education for one year. Usual care group included 27 patients who were not given special education. All patients were evaluated after 3 years follow-up period. Mean per cent asthma knowledge score (KS%), mean per cent demonstration score (DS%), daytime and nighttime symptom scores, Aas score, and pulmonary function tests were measured. The asthma-quality-of-life assessment was performed. The rate of application to emergency room and admission to hospital for last 1 year had been calculated. KS% was higher in educational group than in usual care group (P < 0.001). Daytime score was 0.3 +/- 0.6 in educational group and was 0.8 +/- 1.2 in usual care group (P = 0.08). Nighttime symptom score was found to be 0.5 +/- 0.9 and 0.9 +/- 1.3, respectively (P = 0.07). Usual care group had higher Aas score compared to educational group (P = 0.048). The total score of quality of life was 197.1 +/- 17.8 in educational group and was 176.7 +/- 33.7 in usual care group (P = 0.009). While none of the patients had emergency room application and hospital admission in educational group, seven patients had 21 emergency room application (P = 0.01) and four patients had four hospital admissions in usual care group. Additional short-acting inhaled beta-2 agonist usage was found lower in the educational group (P = 0.068). In conclusion, proper drug use and usual care of patients are not sufficient for asthma treatment. Patient education is an important component of therapy in asthma patients. For a life with optimum standards, in addition to these factors, patient education must be accepted first by doctors and then by patients.     

Open access World Wide Web resources on upper and lower respiratory tract infections.

BACKGROUND: Respiratory tract infections represent a common problem in everyday practice. The development of the World Wide Web can assist clinicians and other medical care professionals in finding useful information on various clinical conditions, including upper and lower respiratory tract infections. METHODS: To identify websites containing information for health care professionals on upper and lower respiratory tract infections, we searched popular search engines such as Google and Yahoo. We also reviewed the sites of major institutions as well as relevant organisations and professional societies and associations. Only those sites that included material in the English language, were open access and developed by a governmental and/or academic institution, or a national or international professional society or associations were included. RESULTS: We selected 106 sites that provide information on upper respiratory tract infections and 67 sites that provide information on lower respiratory tract infections. CONCLUSIONS: We tried to identify freely available Internet resources with relevant information on upper and lower respiratory tract infections. We believe that the list of relevant World Wide Web resources we generated may be useful as an educational tool for clinicians and trainees.     

Increased diagnosis of asthma in hospitalized infants: the next target population for care management?

Hospitalization of children with asthma declined at our institution between 1996 and 2000, before stabilizing for the past 5 years. The ages of children hospitalized since 2000 were examined to see if the demographics of the hospitalized population have changed to better understand why the hospitalization rate has remained the same despite continued, aggressive screening and education efforts. Data were gathered for our hospital through the Department of Defense Medical Health System Management Analysis and Reporting System (M2). The mean age (+/- SD) of children hospitalized in 2003 (2.84 +/- 2.53) was less than the mean age for 2000 and 2002 (4.85 +/- 3.7 and 4.61 +/- 4.45), respectively (p < 0.05), and more infants less than 2 years of age were hospitalized in 2003 (33/60, 55% p < 0.01) and 2004 (32/68, 47% p < 0.05) than in 2000 (19/70, 27%). The diagnosis of asthma in hospitalized infants and young children has increased over the past 5 years, suggesting better recognition and providing a new target population for intervention with early asthma controller therapy.     

Breaking the access barrier: evaluating an asthma center's efforts to provide education to children with asthma in schools

OBJECTIVE: To evaluate an asthma education program for children with asthma that is delivered in their school by certified asthma educators from a local hospital-based asthma center. STUDY DESIGN: Randomized controlled trial. SETTING: Twenty-six elementary schools located in a suburb of Toronto. PARTICIPANTS: A total of 256 children in grades 2 to 5 with asthma and their parents were randomized to control and experimental groups. INTERVENTION: Children in the experimental group received the "Roaring Adventures of Puff" asthma education program over the course of six weekly 1-h sessions. Those in the control group continued receiving usual care. MEASUREMENTS AND RESULTS: Data collection involved measuring asthma quality of life, self-efficacy for managing asthma, school absenteeism, days of interrupted activity, health services use, and parental loss of time from work. Quality of life and self-efficacy data were collected from the children at baseline and 2 months. Telephone parental interviews conducted over 1 year were used to collect data on the remaining variables. Unpaired t test, analysis of variance, and chi2 test were used to determine whether differences existed between the groups. The results are reported as the mean +/- SD. The experimental group demonstrated higher scores than the control group for self-efficacy (3.6 +/- 0.7 vs 3.8 +/- 0.9, respectively; p < 0.05) and quality of life (5.0 +/- 1.4 vs 5.5 +/- 1.4, respectively; p < 0.05). At 1 year, the experimental group demonstrated fewer mean urgent health-care visits (2.5 +/- 2.5 vs 1.7 +/- 1.9 visits per year, respectively; p < 0.01), days of missed school (4.3 +/- 5.7 vs 3.0 +/- 4.4 days per year, respectively; p > 0.05), and days of interrupted activity (9.1 +/- 10.5 vs 6.2 +/- 7.3 days per year; p < 0.01) related to asthma than the control group. There were no differences between the groups for parental work absenteeism or scheduled asthma visits. CONCLUSION: Providing an asthma education program to children in their school can significantly improve quality of life and reduce the burden of childhood asthma.     

Patient-reported and physician-reported depressive conditions in relation to asthma severity and control

BACKGROUND: Depressive conditions in asthma patients have been described mostly from patient reports and less often from physician reports. While patient reports can encompass multiple symptoms, physician assessments can attribute symptoms to a mental health etiology. Our objectives were to identify associations between patient- and physician-reported depressive conditions and asthma severity and control. METHODS: Patient-reported depressive symptoms were obtained using the Geriatric Depression Scale (GDS) [possible score 0 to 30; higher score indicates more depressive symptoms]. Patients were categorized as having a physician-reported depressive disorder if they had the following: a diagnosis of depression, depressive symptoms described in medical charts, or were prescribed antidepressants at doses used to treat depression. Patients also completed the Severity of Asthma Scale (SOA) [possible score 0 to 28; higher score indicates more severe] and the Asthma Control Questionnaire (ACQ) [possible score 0 to 6; higher score indicates worse control]. RESULTS: Two hundred fifty-seven patients were included in this analysis (mean age, 42 years; 75% women). Mean SOA and ACQ (+/- SD) scores were 5.9 +/- 4.2 and 1.4 +/- 1.2, respectively; and mean GDS score was 6.3 +/- 6.4. After adjusting for age, sex, race, Latino ethnicity, education, medication adherence, body mass index, and smoking status, patient-reported depressive symptoms were associated with asthma severity (p = 0.007) and with asthma control (p = 0.0007). In contrast, physician-reported depressive disorders were associated with asthma severity (p = 0.04) but not with asthma control (p = 0.22) after adjusting for covariates. CONCLUSIONS: Physician- and patient-reported depressive conditions were associated with asthma severity. In contrast, patient-reported depressive symptoms were more closely associated with asthma control than were physician-reported depressive disorders. Identifying associations between depressive conditions and asthma severity and control is necessary to concurrently treat these conditions in this population. TRIAL REGISTRATION: Clinicaltrials.gov Identifier: NCT00195117.     

A training program for certified asthma educators: assessing performance.

BACKGROUND: Evidence-based asthma guidelines identify asthma education as an essential element of care. In Canada, a process for certifying asthma educators was established to help provide asthma education to patients. A critical component to certifying asthma educators is their training and evaluation. The purpose of the study was to identify an approach to evaluate participants and to determine if specific characteristics influenced participants' success. METHODS: Participants completed a questionnaire that collected demographic, practice, and learner characteristics. Assessment strategies and criteria used to determine the level of success included 1) a written asthma knowledge score; 2) a written educational theory score, and 3) a practice teaching skill score based on three encounters with standardized patients. Standardized patient encounters were scored by using a standard checklist of essential teaching functions. RESULTS: Participants (n = 73) represented a broad range of health professions (respiratory therapists, nurses, pharmacists, and physiotherapists). The average score for written asthma knowledge, educational theory, and practice skill assessment was 82.0 +/- 8.0%, 68.6 +/- 16.2%, and 80.3 +/- 9.7%, respectively. Moderate interrelationships were observed between the practice teaching skills score and years of practice in asthma (r = 0.35; p < 0.01) and percentage of workdays dedicated to asthma care (r = 0.30; p < 0.05). Moderately strong relationships were observed among the three standardized patient encounters. However, there were no associations between participant scores on the written asthma or educational theory examination and the practice skill assessment scores. CONCLUSIONS: Participants of an asthma educator training program represent a wide range of disciplines, practice settings, and experience. It is important that asthma educator training programs assess both written knowledge and practice assessments to evaluate participants.     

Sublingual immunotherapy to house dust mite in pediatric patients with allergic rhinitis and asthma: a retrospective analysis of clinical course over a 3-year follow-up period.

BACKGROUND AND OBJECTIVE: Specific allergen immunotherapy is believed to be the only treatment able to change the natural history of allergic airway diseases. Sublingual immunotherapy (SLIT) is especially preferred because of its easy application and safety. The aim of this study was to describe the effect of SLIT in pediatric patients who have allergic airway disease. METHODS: Children with asthma and rhinitis who were allergic to house dust mite were evaluated. The effect on clinical course of 3 years of SLIT with 50% Dermatophagoides pteronyssinus and 50% Dermatophagoides farinae in a standardized extract was assessed retrospectively. RESULTS: The records of 39 patients (23 boys, 16 girls) were studied. The mean (+/- SD) age for starting SLIT was 8.8 +/- 2.3 years. The mean number of acute asthma attacks at the onset of the disease was 8.18 +/- 3.05. The mean number of attacks after 3 years of SLIT was 0.44 +/- 0.79. There was a statistically significant difference in the number of acute asthma attacks before and after therapy (P < .001). Complete clinical remission of asthma was recorded in 37 (95%) patients. Similarly, complete clinical remission of allergic rhinitis was recorded in 32 (82%) patients. CONCLUSION: This retrospective study shows that SLIT is effective in children who have allergic airway disease which cannot be controlled effectively with allergen avoidance measures only.     

Distribution of therapeutic response in asthma control between oral montelukast and inhaled beclomethasone.

The distribution of responses in study populations provides a novel method of comparing the benefit of two treatments. This 6-week, randomised, placebo-controlled, double-blind study compared the effectiveness of oral montelukast with inhaled beclomethasone in chronic asthma by assessing the distribution and overlap of patient responses to therapy, as measured by a clinical outcome (asthma control days). A total of 730 adult patients with asthma, age 15-65 yrs, with a forced expiratory volume in one second (FEV1) at baseline of 50-85% of predicted and > or = 15% improvement in FEV1 after inhaled beta-agonist were enrolled. After a 2-week placebo run-in period, patients were randomly allocated to receive montelukast (10 mg once daily), inhaled beclomethasone (200 microg twice daily) or placebo. The primary end-point (per cent of asthma control days) was compared between treatments as the overlap in the response distributions. The overlap of the distribution of responses between the montelukast and beclomethasone groups was 89% for per cent asthma control days and 96% for change from baseline in FEV1. The mean (+/-SD) per cent asthma control days in the montelukast and beclomethasone groups was significantly higher than that in the placebo group (placebo 40.0+/-35.8, montelukast 50.7+/-37.1, beclomethasone 57.9+/-36.1). The mean differences between montelukast and placebo, beclomethasone and placebo, and montelukast and beclomethasone were significant. The mean per cent change (+/-SD) from baseline in FEV1 was 12.1+/-18.7 and 13.9+/-20.8 in the montelukast and beclomethasone groups, respectively, and significantly greater than that in the placebo group (6.4+/-20.1); there was no significant difference between the montelukast and beclomethasone groups in mean values or response distribution. There was also no difference among treatment groups in the frequency of adverse experiences. A comparison of the response distribution is an important approach to comparing therapies; montelukast and beclomethasone provided similar response distributions for the end-point of per cent asthma control days over a 6-week treatment period.     

Depressive symptoms and adherence to asthma therapy after hospital discharge

STUDY OBJECTIVES: To evaluate the effect of depressive symptoms on adherence to therapy after discharge in patients hospitalized for asthma exacerbations. DESIGN: Prospective cohort study in which depressive symptoms were assessed during hospitalization and use of asthma medications was electronically monitored for 2 weeks after discharge. SETTING: Inner-city academic hospital in Baltimore, MD. PATIENTS: Patients were 59 adults with a mean age of 43.2 +/- 10.9 years (+/- SD), who were mostly female (64%), African American (80%), and were hospitalized for an asthma exacerbation. MEASUREMENT AND RESULTS: Depressive symptoms were assessed with the Center for Epidemiological Studies-Depression scale. Electronic monitors were used to evaluate inhaled corticosteroid and oral corticosteroid use for up to 2 weeks after discharge. Forty-one percent of patients had high levels of depressive symptoms. Mean adherence to therapy was significantly lower in patients with (vs without) high levels of depressive symptoms (60 +/- 26% vs 74 +/- 21%, p + 0.02). Even after controlling for age, gender, and education, depressive symptoms were a significant and independent predictor of poorer adherence. High levels of depressive symptoms were associated with a 11.4-fold increase (95% confidence interval, 2.2 to 58.2) in the odds of poor adherence to therapy after adjustment for potential confounders. CONCLUSIONS: Depressive symptoms are common in inner-city adults hospitalized for asthma exacerbations and identify a subset of patients at high risk for poor adherence to asthma therapy after discharge. Further research is needed to determine if screening for and treating depression improves adherence and asthma outcomes in this population.     

Short-term acupuncture therapy is of no benefit in patients with moderate persistent asthma

STUDY OBJECTIVES: Acupuncture traditionally has been used to treat asthma. Nevertheless, only a few controlled studies have been performed to determine the efficacy of this treatment. Our study aimed to determine the efficacy of acupuncture in patients with moderate persistent asthma. METHODS: Twenty-three patients with moderate persistent asthma who had been treated only with inhaled beta(2)-agonists were randomly assigned to receive four sessions of real acupuncture (RA) or sham acupuncture (SA) in a blinded manner. After a washout period of 3 weeks, the patients were crossed over. Monitoring included FEV(1), methacholine challenge, daily peak flow (PF) variability, and the keeping of an asthma diary. RESULTS: Twenty of 23 patients completed the study. There was no significant change in FEV(1) following treatment. The mean (+/- SE) FEV(1) values before and after the RA were 73 +/- 4% and 73 +/- 3%, respectively (not significant [NS]). FEV(1) values before and after SA were 70 +/- 3% and 70 +/- 3%, respectively (NS). There was also no change in provocative methacholine concentration causing a 20% fall in FEV(1) (PC(20)) before and after treatment. The mean PC(20) values before and after RA were 0.92 +/- 0.42 mg/mL and 1.16 +/- 0.51 mg/mL, respectively (p = 0.71), while the PC(20) values before and after SA were 1.47 +/- 0.83 mg/mL and 1.11 +/- 0.79 mg/mL, respectively (p = 0.59). There was no change in the mean PF variability before and after the RA (1.6 +/- 3.1% and 1.8 +/- 2.3%, respectively [NS]). The PF variability before and after SA were 3.6 +/- 2.8% and 2.8 +/- 3.4%, respectively (NS). No significant difference was demonstrated for symptom scores or for the use of beta(2)-agonist inhalers (RA, 6.7 +/- 3.4; SA, 8.1 +/- 3.6; p = 0.58). CONCLUSION: In patients with moderate persistent asthma, a short course of acupuncture treatment resulted in no change in lung functions, bronchial hyperreactivity, or patient symptoms.     

Developing a peer review process for web-based curricula

The World Wide Web creates new challenges and opportunities for medical educators. Prominent among these are the lack of consistent standards by which to evaluate web-based educational tools. We present the instrument that was used to review web-based innovations in medical education submissions to the 2003 Society of General Internal Medicine (SGIM) national meeting, and discuss the process used by the SGIM web-based clinical curriculum interest group to develop the instrument. The 5 highest-ranked submissions are summarized with commentary from the reviewers. Web sites reviewed were presented at the 26th National Meeting of the Society of General Internal Medicine, Vancouver, Canada, April 30 to May 3, 2003. The review instrument has not previously been presented.     

Measurement of bronchial and alveolar nitric oxide production in normal children and children with asthma

RATIONALE: Airway inflammation is characteristic of asthma. Distal inflammation may be particularly important. OBJECTIVE: To calculate alveolar nitric oxide (NO) concentration (C(alv)) and bronchial flux NO (J(NO)) in children. METHODS: We measured C(alv) and J(NO) from the fractional exhaled NO (FeNO(50)) measured at multiple exhalation flow rates in 132 children (aged 4-18 yr) with known atopic status, medication, and asthma control. MEASUREMENTS AND MAIN RESULTS: Of participants, 85% (112/132) completed all measurements. In 20 of 112, the result did not fit the linear model. Thus, J(NO) and C(alv) were assessed in 92 (70%) subjects. The median (range) values of asthmatic (n = 52), normal (n = 20), and nonasthmatic atopic (n = 20) children were as follows: FeNO(50): 28.1 (4.3-190), 10.35 (3.3-29), 21.8 (8.7-69) ppb, respectively; J(NO): 1,230 (204-9,236), 480 (196-1,913), 1,225 (486-4,119) pl/s, respectively; C(alv): 2.22 (0.44-6.63), 1.63 (0.44-3), 1.21 (0.03-2.85) ppb, respectively. A reproducibility study in 18 other children gave intraclass correlation coefficients (single measures) of 0.99 (J(NO)) and 0.81 (C(alv)). J(NO) and C(alv) were higher in children with asthma than normal children (p = 0.0004 and p = 0.0002, respectively). Children with poorly controlled asthma (n = 27) had higher FeNO(50) measurements than children with good symptom control (n = 25): C(alv): mean (+/- SD), 3.17 +/- 1.62 versus 2.26 +/- 1.30 ppb, p = 0.03; J(NO): mean (+/- SD), 2,634 +/- 2,255 versus 1,193 +/- 1,294 pl/s, p = 0.007, respectively. CONCLUSIONS: Measurement of J(NO) and C(alv) is feasible in 70% of school-age children. FeNO(50) and J(NO) give the same information (r = 0.97, p < 0.0001), C(alv) is higher in asthmatic children than in normal children and is affected by asthma control, but not by atopy. C(alv) may possibly reflect alveolar inflammation in asthma.     

Efficacy of a heat exchanger mask in cold exercise-induced asthma

STUDY OBJECTIVES: To determine the efficacy of a novel mask device in limiting cold air exercise-induced decline in lung function in subjects with a history of exercise-induced asthma (EIA). SETTING: In spite of appropriate medical therapy, many asthma patients are limited in cold weather activities. DESIGN: In study 1, 13 asthmatic subjects performed two randomized, single-blind treadmill exercise tests while breathing cold air (- 25 to - 15 degrees C) through a placebo or active heat exchanger mask. In study 2, five subjects with EIA performed three treadmill exercise tests while breathing cold air: one test using the heat exchanger mask, one test without the mask but with albuterol pretreatment, and one test with neither the mask nor albuterol pretreatment (unprotected exercise). For all studies, spirometry was performed before and at 5, 15, and 30 min after exercise challenge. PATIENTS: For both studies, a total of 15 subjects with a history of asthma symptoms during cold air exercise were recruited. RESULTS: In study 1, the mean decrease (+/- SE) in FEV1 was 19 +/- 4.9% with placebo, and 4.3 +/- 1.6% with the active device (p = 0.0002). The mean decrease in maximum mid-expiratory flow (FEF(25-75)) was 31 +/- 5.7% with placebo and 4.7 +/- 1.7% with the active device (p = 0.0002). In study 2, the mean decrease in FEV1 was 6.3 +/- 3.9%, 11 +/- 3.7%, and 28 +/- 10% for the heat exchanger mask, albuterol pretreatment, and unprotected exercises, respectively (p = 0.4375 for mask vs albuterol, p = 0.0625 for mask vs unprotected exercise). The mean decrease in FEF(25-75) was 10 +/- 4.8%, 23 +/- 6.0%, and 36 +/- 11%, respectively (p = 0.0625 for mask vs albuterol, p = 0.0625 for mask vs unprotected exercise). CONCLUSIONS: This heat exchanger mask blocks cold exercise-induced decline in lung function at least as effectively as albuterol pretreatment.     

Erythrocytes from patients with low serum concentrations of IGF-I have an increase in receptor sites for IGF-I.

The binding characteristics of insulin-like growth factor I on erythrocytes were studied in 11 patients with long-term IGF-I deprivation and low serum IGF-I levels. Six patients had Laron type dwarfism and 5 idiopathic isolated growth hormone deficiency, with a mean (+/- SEM) serum IGF-I level of 6.01 +/- 1.01 nmol/l as compared with that in 25 normal controls of 26.35 +/- 2.73 nmol/l (p = 0.00001). The mean (+/- SEM) [125I]IGF-I specific binding at a concentration of 4 x 10(12) cell/l was 12.11 +/- 1.29% for the patient group compared with 8.75 +/- 0.62% for the controls (p = 0.005). Scatchard analysis showed a curvilinear plot. Using a non-linear curve fit, the mean (+/- SEM) number of high-affinity receptor sites per cell was found to be 7.34 +/- 1.80 in the IGF-I-deprived patients and 2.84 +/- 0.29 in the controls (p = 0.0005). The mean +/- SEM dissociation constant was found to be 0.33 +/- 0.10 nmol/l for the patients and 0.26 +/- 0.08 nmol/l for the controls (NS). This study has demonstrated that the low serum concentration of IGF-I in Laron type dwarfism and isolated growth hormone deficiency is associated with an increase in receptor sites for IGF-I on the erythrocytes. The application of this property as a diagnostic acid remains to be established.