Creating your own medical Internet library.
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Many physicians struggle to keep up with new developments in their fields. The internet can provide a solution to this problem by allowing rapid access to a broad spectrum of reliable information. Becoming familiar with a few clinically relevant and freely available medical resources on the World Wide Web may enhance a physician's efforts to provide evidence-based care on a daily basis. This article outlines a simple strategy for physicians to make the internet a useful tool. (+info)
Level of renal function at the initiation of dialysis in the U.S. end-stage renal disease population.
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Level of renal function at the initiation of dialysis in the U.S. end-stage renal disease population. BACKGROUND: More than 285,000 individuals in the United States suffer from end-stage renal disease (ESRD) and are treated predominantly by dialysis. Despite the high cost and poor outcomes of dialysis treatment for ESRD, there are few data about the level of renal function at the onset of ESRD and no established medical criteria for the initiation of dialysis. METHODS: We report the level of serum creatinine and glomerular filtration rate (GFR) in 90,897 patients who began dialysis in the U. S. between April 1995 through September 1997. Data were obtained from the U.S. Renal Data System. GFR was predicted by an equation developed from the Modification of Diet in Renal Disease Study. RESULTS: The mean (SD) serum creatinine was 8.5 (3.8) mg/dl. The mean (SD) predicted GFR was 7.1 (3.1) ml/min/1.73 m2, with a range from 1 to 42 ml/min/1.73 m2. The proportion of patients with predicted GFR of > 10, 5 to 10, and <5 ml/min/1.73 m2 was 14, 63, and 23%, respectively. The mean predicted GFR was significantly lower among younger patients, women, African Americans, patients with a higher body weight, patients with ESRD because of diseases other than diabetes, uninsured patients, patients who were employed, homemakers or students, and patients selecting hemodialysis. CONCLUSIONS: There is wide variation in renal function at the initiation of dialysis in the U.S. ESRD population, and a substantial fraction of patients start dialysis at very low levels of predicted GFR. Further analyses are needed to examine the factors associated with late initiation of dialysis and its impact on the cost and outcomes of ESRD. (+info)
Changes in the scope of care provided by primary care physicians.
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BACKGROUND: Strategies to control medical costs and improve the quality of care often translate into decisions affecting the range of services primary care physicians provide to patients, which patients are referred for specialty care, and the points in disease processes at which referrals are made. This study focused on physicians' assessments of changes in the scope of care provided by primary care physicians and their assessments of the appropriateness of the scope of the care that primary care physicians are expected to provide. METHODS: We analyzed data from the 1996-1997 Community Tracking Study Physician Survey. Telephone interviews were conducted with 12,385 physicians (reflecting a response rate of 65 percent) who were drawn from a representative random sample of physicians providing direct patient care in the continental United States and not employed by the federal government. The analysis was based on responses from the 7015 primary care physicians and 5092 specialists who had been in practice for at least two years. RESULTS: Thirty percent of the primary care physicians and 50 percent of the specialists reported that the scope of care provided by primary care physicians had increased during the previous two years. Twenty-four percent of the primary care physicians and 38 percent of the specialists reported that the scope of care expected to be provided by primary care physicians was greater than it should be. According to multivariate analysis, primary care physicians other than general or family practitioners (i.e., pediatricians and general internists), those who were in one- or two-physician practices, those who received revenues from capitation, and those who served as gatekeepers for their patients' care were significantly more likely to report that the scope of care they were expected to provide was greater than it should be. CONCLUSIONS: The finding that nearly one in four primary care physicians reported that the scope of care they were expected to provide was greater than it should be arouses concern about the potential impact of changes in the delivery of health care. The associations we found between financial and administrative aspects of managed care and physicians' concern about the scope of care they provide to their patients deserve careful consideration. (+info)
The scope of international occupational medical practice.
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The international physician has a tremendous scope of responsibility. Clinical care and its management, occupational and environmental medicine, travel medicine, marine and aviation medicine, public health and other disciplines must be addressed. Programmes must include expatriates, national citizens, travellers, families, extended families, and the surrounding communities. Moreover, in the international context, the occupational physician is a representative of the company in the host country. Furthermore, the knowledge required is not only vast, but changes rapidly. It requires not only clinical acumen, but also the ability to effectively design and implement many types of programmes in the context of the customs and regulations of the country and with the guidance of management. (+info)
Sample size calculation for clinical trials: the impact of clinician beliefs.
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The UK Medical Research Council (MRC) randomized trial of gastric surgery, ST01, compared conventional (D1) with radical (D2) surgery. Sample size estimation was based upon the consensus opinion of the surgical members of the design team, which suggested that a change in 5-year survival from 20% (D1) to 34% (D2) could be realistic and medically important. On the basis of these survival rates, the sample size for the trial was 400 patients. However, this trial was exceptional in the way that a survey of surgeons' opinions was made at the start of the trial, in 1986, and again before results were analysed but after termination of the trial in 1994. At the initial survey, the three surgeons from the trial steering committee and 23 other surgeons experienced in treating gastric carcinoma were given detailed questionnaires. They were asked about the expected survival rate in the D1 group, anticipated difference in survival from D2 surgery, and what difference would be medically important and influence future treatment of patients. The consensus opinion of those surveyed was that there might be a survival improvement of 9.4%. In 1994, prior to closure of the trial, and before any survival information was disclosed, the survey was repeated with 21 of the original 26 surgeons. At this second survey, the opinion of the trial steering committee was that 9.5% difference was more realistic. This was in accord with the opinion of the larger group, which remained little changed since 1986. The baseline 5-year D1 survival was thought likely to be about 32%, which corresponded closely to the actual survival of recruited patients. Revised sample size calculations suggested that, on the basis of these more recent opinions, between 800 and 1200 patients would have been required. Both surveys assessed the level of treatment benefit that was deemed to be sufficient for causing surgeons to change their practice. This showed that the 13% difference in survival used as the study target was clinically relevant, but also indicated that many clinicians would remain unwilling to change their practice if the difference is only 9.5%. The experience of this carefully designed trial illustrates the problems of designing long-term, randomized trials. It raises interesting questions about the common practice of basing sample size estimates upon the beliefs of a trial design committee that may include a number of enthusiasts for the trial treatment. If their opinion of anticipated effect sizes drives the design of the trial, rather than the opinion of a larger community of experts that includes sceptics as well as enthusiasts, there is likely to be a serious miscalculation of sample size requirements. (+info)
A regional survey of chest drains: evidence-based practice?
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Although the use of chest drains is common in medicine, there appear to be wide variations in practice. A survey was therefore conducted to establish the current status of chest drain management in the Northwest region. A questionnaire targeted consultants practising in the specialties of chest medicine, general surgery, accident & emergency and cardiothoracic surgery. The questionnaire consisted of five sections encompassing aspects of the insertion, day-to-day care and removal of chest drains. With an overall response rate of 75.3% (110/146), important variations in every major aspect of the practice of chest drains were found between the specialties and to a large extent within each specialty. We have made a number of recommendations which aim to encourage good practice and reduce unnecessary complications, including the adoption of standardised protocols for inserting and managing chest drains. (+info)
Avoiding problems in clinical practice after the pill scare.
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The publications of 1995 and 1996 on the risk of venous thrombosis associated with the use of the combined oral contraceptive pill (COC) suggested that the risks were lower than previous estimates. The debate, which ensued, ensured that the safety of the COC with regard to arterial and venous disease was reassessed. This review details the importance of contraception for public health. It reassesses critically current prescribing practice in the light of the new publications on Factor V Leiden, arterial and venous disease. Methods of communicating information about the COC are assessed, and the difficulties of transmitting complex scientific data to health care professionals and the general public are debated. The importance of attempting to quantify the benefits and risks of the COC and explaining them in the context of other life events is emphasized. (+info)
Bridging cultural differences in medical practice. The case of discussing negative information with Navajo patients.
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BACKGROUND: Cultural differences between doctors and their patients are common and may have important implications for the clinical encounter. For example, some Navajo patients may regard advance care planning discussions to be a violation of their traditional values. OBJECTIVE: To learn from Navajo informants a culturally competent approach for discussing negative information. DESIGN: Focused ethnography. SETTING: Navajo Indian reservation, northeast Arizona. PARTICIPANTS: Thirty-four Navajo informants, including patients, traditional healers, and biomedical health care providers. MEASUREMENT: In-depth interviews. MAIN RESULTS: Strategies for discussing negative information were identified and organized into four stages. Assessment of patients is important because some Navajo patients may be troubled by discussing negative information, and others may be unwilling to have such discussions at all. Preparation entails cultivating a trusting relationship with patients, involving family members, warning patients about the nature of the discussion as well as communicating that no harm is intended, and facilitating the involvement of traditional healers. Communication should proceed in a caring, kind, and respectful manner, consistent with the Navajo concept k'e. Reference to a third party is suggested when discussing negative information, as is respecting the power of language in Navajo culture by framing discussions in a positive way. Follow-through involves continuing to care for patients and fostering hope. CONCLUSIONS: In-depth interviews identified many strategies for discussing negative information with Navajo patients. Future research could evaluate these recommendations. The approach described could be used to facilitate the bridging of cultural differences in other settings. (+info)