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Biomedical subjects

Norman R Campbell

Publications and source records attributed to Norman R Campbell.

5 recordsLinked to original sources
PubMed2006

Worldwide epidemic of hypertension.

The World Health Report 2002 identified hypertension, or high blood pressure, as the third ranked factor for disability-adjusted life years. Hypertension is one of the primary risk factors for heart disease and stroke, the leading causes of death worldwide. Recent analyses have shown that as of the year 2000, there were 972 million people living with hypertension worldwide, and it is estimated that this number will escalate to more than 1.56 billion by the year 2025. Nearly two-thirds of hypertensives live in low- and middle-income countries, resulting in a huge economic burden. Awareness, prevention, treatment and control of hypertension is a significant public health measure. The World Hypertension League, through its national member societies, launched World Hypertension Day in 2005 and, due to its success throughout the world, it has been made an annual event. The 2006 World Hypertension Day was held on May 13; the theme of the day was "Treat to Goal", with a clear intent to ensure patient adherence and control of hypertension worldwide. In Canada, all stakeholders--professional societies, government, nongovernment organizations and industry--are working together to promote awareness of hypertension and to control it.

Anniversaries and Special Events↗
PubMed2006

Implementation of recommendations on hypertension: the Canadian Hypertension Education Program.

The diffusion of research evidence or practice guidelines does not, by itself, lead to changes in practice behaviour or patient outcomes. The Canadian Hypertension Education Program (CHEP) was specifically structured to have an explicit process to improve the ability of primary care professionals to use CHEP recommendations. The key features of this process are reviewed in the present report. The responsibility for implementation of recommendations is divided between the executive committee of CHEP and the Implementation Task Force (ITF). The executive develops an extensive array of summaries and implementation tools for the recommendations, and encourages and facilitates other organizations to develop educational materials and programs. The ITF creates further implementation tools, tailors the tools to specific health care disciplines and creates discipline-specific dissemination strategies. Currently, CHEP recommendations are disseminated through updated full scientific manuscripts, short scientific and clinical summaries, one-page handouts, wall posters, pocket cards, advertisements, extensive slide kits, textbooks, didactic lectures and workshops. A Web site with the recommendations in different formats is maintained to allow easy access. More recently, media releases have been used to alert the public and health care professionals to important recommendations. The transparent and interactive annual process of developing the recommendations by most of Canada's clinical hypertension experts is also viewed as critical to providing uniform educational messages to health care professionals from national and local opinion leaders. The CHEP ITF includes primary care disciplines and specialties important to blood pressure control. The CHEP process for the implementation of recommendations is very extensive and continues to evolve. There is early evidence for improvement in the management of hypertension in Canada that coincides with the initiation of CHEP, suggesting that CHEP could serve as a model for disease management recommendations.

Advisory Committees↗
PubMed2006

Performance of the automated BpTRU measurement device in the assessment of white-coat hypertension and white-coat effect.

OBJECTIVES: BpTRU (VSM MedTech Ltd, Vancouver, Canada) is an automated oscillometric device that provides serial blood pressure measurements in an office setting in the absence of a healthcare professional. We sought to determine whether the white-coat effect is reduced by a blood pressure measurement protocol using BpTRU compared with casual office measurements. Secondarily, we also sought to determine whether a blood pressure measurement protocol using BpTRU reduced white-coat hypertension compared with the casual office measurements, and reduced white-coat effect and white-coat hypertension compared with blood pressure obtained by a research nurse. METHODS: Blood pressure was measured in 107 adult hypertensive patients referred for ambulatory blood pressure monitoring using an ambulatory blood pressure monitor, a standardized protocol by a trained research nurse, and a protocol using BpTRU (five readings over 25 min, using the 5-min blood pressure measurement interval setting). Casual office blood pressure was also recorded in the family physicians' offices. Using the mean daytime ambulatory blood pressure as the reference standard, the proportion of patients with white-coat effect and white-coat hypertension were determined for measurements obtained by BpTRU, the research nurse, and the family physicians' offices. RESULTS: Casual office blood pressure measurements demonstrated a white-coat effect in 39 (36.4%) patients; seven (6.5%) patients demonstrated a white-coat effect using BpTRU (P<0.0001). White-coat hypertension was also less common using BpTRU than with the casual office readings (13 vs. 1 patient, P<0.0001). White-coat effect was also reduced with BpTRU compared with the research nurse measurements. Unfortunately, percentage agreement for the diagnosis of hypertension between the protocol using BpTRU and the reference standard was only 48%. This resulted in substantial misclassification of hypertension by the BpTRU measurement protocol. CONCLUSIONS: Although BpTRU reduces white-coat effect and white-coat hypertension, blood pressure is underestimated by the device, leading to misclassification of hypertension. BpTRU, when set at 5-min blood pressure measurement intervals, should not be used in clinical practice.

Aged↗
PubMed2004

Development of a perioperative medicine research agenda: a cross sectional survey.

BACKGROUND: Post-operative complications are a significant source of morbidity and mortality for patients undergoing surgery. However, there is little research in the emerging field of perioperative medicine beyond cardiac risk stratification. We sought to determine the research priorities for perioperative medicine using a cross sectional survey of Canadian and American general internists. METHODS: Surveys were electronically sent to 312 general internists from the Canadian Society of Internal Medicine and 130 internists from the perioperative medicine research interest group within the US based Society of General Internal Medicine. The questionnaire contained thirty research questions and respondents were asked to rate the priority of these questions for future study. RESULTS: The research topics with the highest ratings included: the need for tight control of diabetes mellitus postoperatively and the value of starting aspirin on patients at increased risk for postoperative cardiac events. Research questions evaluating the efficacy and safety of perioperative interventions had higher ratings than questions relating to the prediction of postoperative risk. Questions relating to the yield of preoperative diagnostic tests had the lowest ratings (p < 0.001 for differences across these categories). CONCLUSION: The results of this survey suggest that practicing general internists believe that interventions studies are a priority within perioperative medicine. These findings should help prioritize research in this emerging field.

Adult↗