Predicting long-term survival after de novo cardioverter-defibrillator implantation for primary prevention: A population based study

Background

Implantable cardioverter-defibrillators (ICDs) reduce the risk of sudden cardiac death in patients with left ventricular dysfunction. While short-term mortality benefit of ICD insertion has been established in landmark randomized controlled trials, little is known about the long-term outcomes of patients with ICDs in clinical practice. In this paper, we describe the long-term survival of patients following de novo ICD implantation for primary prevention in clinical practice and determine the factors which help predict survival after ICD implant.

Methods

Retrospective population-based study of all patients receiving a de novo ICD for primary prevention in Ontario, Canada from 2007 to 2011 using the Ontario ICD Database housed within ICES. Simple random selection was used to split the population into a derivation and internal validation cohort in a ratio of 2:1. Cox proportional hazards regression was used to determine predictors of interest and predict 10-year survival, model performance was assessed using calibration and validation.

Results

In the derivation cohort (n = 3399), mean age was 65.3 years (standard deviation [SD] = 11.0), 664 patients were female (19.5 %) and 2344 patients (69.0 %) had ischemic cardiomyopathy. Ten year survival was 45.7 % (95 % confidence interval [CI] 44.0 %-47.4 %). The final prediction model included age, sex, disease factors (ischemic vs nonischemic cardiomyopathy, left ventricular ejection fraction) and patient factors (symptoms, comorbidities), and biomarkers at the time of ICD assessment. This model had good discrimination and calibration in derivation (0.79, 95 % CI 0.77, 0.81) and validation samples (0.78, 95 % CI 0.76, 0.79).

Conclusions

A combination of demographic and clinical factors determined at baseline can be used to predict 10-year survival in patients with implantable cardioverter-defibrillators with good accuracy. Our findings help to identify individuals at risk of long-term mortality and may be useful in targeting future prevention strategies to enhance longevity in this high-risk population.

Identifying the Effect of Inherited Bleeding Disorders on the Development of Postpartum Hemorrhage: A Population-based, Retrospective Cohort Study

Background

Women with inherited bleeding disorders (IBDs) are at an increased risk of postpartum hemorrhage (PPH). However, the impact of other maternal predelivery risk factors, including anemia, on the association between IBD and maternal bleeding remains poorly understood. Additionally, studies examining potential pathways linking IBD and PPH are limited.

Objectives

We aimed to determine the risk of PPH associated with IBD.

Methods

A retrospective cohort study was conducted using data held within ICES (formerly the Institute for Clinical Evaluative Sciences). Women with an in-hospital, live, or stillborn delivery between January 2014 and December 2019 were included. Poisson regression with robust error variance was used to determine the risk (RR) and 95% CIs of PPH among women with or without an IBD diagnosis. Models were stratified for primiparous and multiparous women.

Results

Among the total population of 601,773 women, 29,661 (4.93%) experienced PPH. Multivariate models demonstrated that IBD was an independent risk factor for PPH among both the total cohort (adjusted RR [aRR] = 1.26; 95% CI: 1.08, 1.46) and primiparous women (aRR = 1.36; 95% CI: 1.12, 1.66). Among multiparous women, prior PPH was associated with an increased risk of PPH (aRR = 8.65; 95% CI: 8.32, 8.99), whereas IBD had no effect (aRR = 1.1; 95% CI: 0.86, 1.4). Predelivery anemia, placental conditions, multifetal gestation, and induction of labor were associated with increased PPH risk among all cohorts.

Conclusions

IBD significantly increases the risk of PPH. The management of delivery should be based on individualized assessment of risk factors to ensure optimal maternal outcomes.

The Impact of Primary Care Practice Models on Indicators of Unplanned Health Care Utilization for Ontario Adults Newly Diagnosed With Chronic Obstructive Pulmonary Disease: A Retrospective Cohort Study

BACKGROUND

Chronic obstructive pulmonary disease (COPD) is a highly prevalent chronic disease. Most of the care for this population occurs within the primary care setting; however, the extent to which different primary care practice models influence the outcomes of patients with COPD remains unclear.

OBJECTIVE

The study aimed to compare and analyze the influence of different primary care practice models on indicators of unplanned health care utilization among newly diagnosed COPD patients in Ontario.

DESIGN

A retrospective cohort study was conducted using health administrative database within the Institute for Clinical Evaluative Sciences. The cohort included persons who were 35 years and older with physician-diagnosed COPD between January 1, 2014 and December 31, 2019. Patients were assigned into 3 practice models: team-based, traditional, and no enrolment. The primary outcomes examined was unplanned health care utilization, specifically emergency department (ED) visits and hospitalizations. To account for excessive zero values, the zero inflated negative binomial (ZINB) models were used to analyze the association between different practice models and unplanned health care utilization.

RESULTS

Among 57,145 individuals who met the inclusion criteria, 55,994 were included in the regression analysis. Of the included participants, 62.8% of patients were in the traditional group, 30.3% were in the team-based group, and 6.9% were in the no enrolment group. Between 2014 and 2019, 70.7% of the cohort had at least 1 all-cause ED visit without hospitalization. The adjusted ZINB models showed no significant difference in risks of experiencing an unplanned health care utilization between the team-based and traditional groups. However, patients in the no enrolment group had a significantly higher risk of ED visit without hospitalization regardless of cause, ED visit with hospitalization regardless of cause, and 30-day readmissions regardless of cause.

CONCLUSIONS

Primary care practice models are complex, influenced by remuneration and organizational structures, reinforcing the need for further research to enhance our understanding of primary care reforms. Furthermore, given the growing shortage of primary care providers, patients with COPD and other chronic conditions are particularly vulnerable.

Investigating the relationship between melatonin patterns and methylation in circadian genes among day shift and night shift workers

OBJECTIVES

Mechanisms underlying the carcinogenicity of night shift work remain uncertain. One compelling yet understudied cancer mechanism may involve altered DNA methylation in circadian genes due to melatonin secretion patterns. The objective of this study was to explore the relationship between melatonin secretion patterns and circadian gene methylation among day and night shift workers.

METHODS

Female healthcare employees (n=38 day workers, n=36 night shift workers) for whom we had urinary 6-sulfatoxymelatonin secretion data from a previous study were recontacted. New blood samples were collected and used to measure methylation levels at 1150 CpG loci across 22 circadian genes using the Illumina Infinium MethylationEPIC beadchip. Linear regression was used to examine the association between melatonin (acrophase and mesor) and M values for each CpG site (false discovery rate, q=0.2), while testing for effect modification by shift work status.

RESULTS

Among night shift workers, a higher mesor (24 hours of mean production of melatonin) was associated with increased methylation in the body of RORA (q=0.02) and decreased methylation in the putative promoter region of MTNR1A (q=0.03). Later acrophase (ie, time of peak concentration) was associated with increased methylation in the putative promoter region of MTNR1A (q=0.20) and decreased methylation in the body of PER3 (q=0.20). No associations were identified among day workers.

CONCLUSIONS

In conclusion, patterns in melatonin secretion were associated with differential circadian gene methylation among night shift workers. Melatonin and alteration of DNA methylation in circadian genes may be one pathway towards increased cancer risk, although larger-scale studies examining multiple time points are needed.

DNA methylation of circadian genes and markers of cardiometabolic risk in female hospital workers: An exploratory study

Night shift work has been linked to increased risk of cardiovascular disease (CVD); however, the underlying mechanisms remain unclear. A compelling yet understudied mechanism involves differential DNA methylation of circadian genes. To investigate the relevance of this mechanism, we conducted an exploratory cross-sectional study of 74 female hospital personnel (38 day workers, 36 night shift workers). Sociodemographic, lifestyle, and health characteristics as well as shift work status and history were determined through self-report. Fasting blood samples were collected to measure markers of cardiometabolic risk and DNA was extracted to measure DNA methylation of 1150 cytosine-guanine (CpG) sites across 22 circadian genes. Associations between methylation levels at individual CpG sites (β-values) and markers of cardiometabolic risk were analyzed while considering effect modification by shift work status. The false discovery rate was applied to account for multiple comparisons (q ≤ 0.20). Two CpG sites [cg06758649 (CRY1) and cg06899802 (CSNK1A1)] were differentially associated with waist circumference and body mass index by shift work status, and eight CpG sites [cg26103512 (CSNK1D), cg03941313 (CSNK1E), cg18217763 (CSNK1E), cg16682686 (DEC1), cg12061096 (RORA), cg10133825 (RORA), cg19652148 (RORA), and cg22904654 (RORA)] were differentially associated with LDL cholesterol concentration by shift work status (all q ≤ 0.20). Our findings suggest that the relationship between DNA methylation of circadian genes and cardiometabolic risk differs by day and night shift worker status, which may contribute to mechanisms of increased risk of CVD observed among night shift workers.

Exploring the impact of night shift work on methylation of circadian genes

Night shift work is associated with increased breast cancer risk, but the molecular mechanisms are not well-understood. The objective of this study was to explore the relationship between night shift work parameters (current status, duration/years, and intensity) and methylation in circadian genes as a potential mechanism underlying the carcinogenic effects of night shift work. A cross-sectional study was conducted among 74 female healthcare employees (n = 38 day workers, n = 36 night shift workers). The Illumina Infinium MethylationEPIC beadchip was applied to DNA extracted from blood samples to measure methylation using a candidate gene approach at 1150 CpG loci across 22 circadian genes. Linear regression models were used to examine the association between night shift work parameters and continuous methylation measurements (β-values) for each CpG site. The false-discovery rate (q = 0.2) was used to account for multiple comparisons. Compared to day workers, current night shift workers demonstrated hypermethylation in the 5'UTR region of CSNK1E (q = 0.15). Individuals that worked night shifts for ≥10 years exhibited hypomethylation in the gene body of NR1D1 (q = 0.08) compared to those that worked <10 years. Hypermethylation in the gene body of ARNTL was also apparent in those who worked ≥3 consecutive night shifts a week (q = 0.18). These findings suggest that night shift work is associated with differential methylation in core circadian genes, including CSNK1E, NR1D1 and ARNTL. Future, larger-scale studies with long-term follow-up and detailed night shift work assessment are needed to confirm and expand on these findings.

The Associations of Shift Work, Sleep Quality, and Incidence of Hypertension in Ontario Adults: A Population-Based Study

BACKGROUND

Relatively few population-based studies have explored the relationship and potential mechanisms between exposure to shift work and hypertension. The study objectives for this study were to determine 1) if history of shift work was associated with increased rates of hypertension among working adults, and 2) if sleep quality mediated this relationship.

METHODS

We conducted a population-based cohort study using data from Ontario respondents (aged 35-69 y) in the 2000-2001 Canadian Community Health Survey, which was linked to administrative health data housed at the Institute for Clinical Evaluative Sciences. Our sample included survey participants who were employed with no previous diagnosis of hypertension (n = 7420). During a 12-year follow-up window, we determined the time of hypertension diagnosis based on a previously validated algorithm; and explored the mediating effect of sleep quality using marginal structural effect models.

RESULTS

The study sample included 2079 shift workers and 5341 day workers. Shift workers reported less refreshing sleep, more trouble sleeping, and poorer sleep quality overall compared with day workers. In 12 years of follow-up, 31.3% of workers developed hypertension. History of shift work was associated with higher hypertension rates in both men (hazard ratio [HR] 1.21, 95% confidence interval [CI] 1.02-1.44) and women (HR 1.26, 95% CI 1.03-1.55). There was no evidence that these associations were mediated by past sleep quality.

CONCLUSIONS

History of shift work schedules is associated with increased rates of hypertension. Shift work disrupts sleep, but further longitudinal studies are needed to determine if sleep quality mediates the association between shift work and hypertension.

Building Research Capacity in Nursing Academia in 2020: Is the Road Less Perilous?

Background

Building research capacity in nursing academic units continues to be a challenge. There are a number of external contextual factors and internal factors that influence individual faculty as well as the collective to engage successfully in research.

Purpose

The overall aim of this opinion article is to provide an overview of the current external and internal, processes and structures, relevant to capacity of nursing faculty to engage in research.

Methods

To inform the external context, we reviewed national research funding trends for nursing. To inform the internal context, we provided an exemplar of the internal processes and structures designed to support research capacity building within our academic unit.

Results

Canadian Institutes of Health Research funding trends for research grants led by nurse principal applicants increased between 2010 and 2013, followed by a steady decline. In 2017 to 2018, there were only 24 research grants led by nurse principal applicants. These external challenges coupled with the traditional internal barriers, such as the imbalance between teaching and research time, threaten research capacity for nursing academics.

Conclusion

Organizational strategies to promote research capacity within academic nursing units are a necessary requirement to move forward.

A population-based study of prescribing trends in a potentially vulnerable paediatric population from 1999 to 2012

OBJECTIVES

There is a limited understanding of paediatric medication prescribing trends and patterns, thus poorly positioning decision-makers to identify quality and safety concerns related to medication use. The objective of this study was to determine overall medication prescribing trends and patterns among children receiving Ontario Drug Benefits over a thirteen-year period in the province of Ontario, Canada.

METHODS

Administrative health databases housed within the Institute for Clinical Evaluative Sciences (ICES), Ontario, Canada, were used to identify outpatient prescriptions dispensed from 1999 to 2012 through a publicly funded programme to children ≤18 years of age. Medications were classified according to the American Hospital Formulary Service Pharmacologic-Therapeutic Classification system. Descriptive statistics were used to summarize prescribing patterns.

KEY FINDINGS

This study identified 457 037 children who were dispensed a new prescription between 1999 and 2012. About 56% received their first prescription before 6.5 years of age, and 85% of the children in this study were from families who received social assistance. The most commonly prescribed drugs were antiinfectives (56.1%). Prescriptions for several central nervous system agents, including antipsychotics and agents for attention-deficit/hyperactivity disorder, increased across the study period. Changes in prescribing patterns within opioids, hormones and autonomic agents were noted. The results suggest that historically, prescribing trends have shifted with public policy, pharmaceutical marketing and diagnostic patterns, thus identifying them as a possible tool to measure the impact of policydriven practice changes. Anti-infective prescribing increased markedly with the global H1N1 pandemic. Pharmaceutical marketing, formulary decisions and diagnostic trends may affect the prescribing of ADHD medications globally. The prescribing of codeine-containing products and medroxyprogesterone appeared to fluctuate in response to important publications in the medical literature, and the use of epinephrine syringes increased after public policy changes in the province of Ontario. The steady rise in the use of medications whose long-term effects in children are unknown, such as antipsychotics and proton pump inhibitors, identifies areas in need of future research.

CONCLUSIONS

This study presents the first overview of Canadian prescribing trends for children, the majority of which are of low socioeconomic status and represent a potentially vulnerable population. Our analysis suggests that future research is required to determine whether prescribing trends could be used as indicators of policy effectiveness, pharmacovigilance and diagnostic trends.

Exploring the utility of the Nursing Role Effectiveness Model in evaluating nursing contributions in primary health care: A scoping review

AIMS

To inform a discussion for the applicability of using the Nursing Role Effectiveness Model (NREM) in the primary health care setting through a synthesis of the literature that has used the model in all health care sectors.

DESIGN

Scoping Review.

METHODS

Articles were considered for inclusion if they discussed any aspect of the NREM in health care research that presented information related to any nursing regulatory designation, such as nurse practitioner (NP), registered nurse (RN), licensed/registered practical nurse (LPN/RPN) and considered both quantitative and qualitative study designs, including expert opinions and reports.

RESULTS

A total of 22 articles that cited and/or used the NREM were identified in this review. Only two studies were focused in the primary health care setting. There is precedence for the use of the NREM to guide research in primary health care. The NREM should be modified to incorporate the unique characteristics of the primary health care setting.

Dying in Canada: Is It an Institutionalized, Technologically Supported Experience?

Although preliminary evidence shows that people generally prefer to die at home, very little is known about where Canadians die. Understanding the epidemiology of dying in Canada may illuminate opportunities to improve quality of end-of-life care and related health policy. We conducted a cross-sectional analysis of death records in Canada to determine the proportions of deaths occurring in hospitals and special care units. Our analysis found that deaths in Canada occur in hospitals with provincial and territorial proportions ranging from 87% in Quebec to 52% in the Northwest Territories. In hospitals recording deaths in special care units, 18.64% of all deaths occurred in special care units. The proportion of deaths in special care units ranged from 25% in Manitoba to 7% in the Northwest Territories. The proportion of deaths in special care units varied by size and nature (teaching vs. non-teaching) of hospitals. It increased with the size of the hospital from 8% in hospitals with 1–49 beds, to 23% for hospitals with 400 or more beds. In teaching hospitals, 27% of deaths occurred in special care units, and in non-teaching hospitals the proportion was 15%. In conclusion, the majority of deaths in Canada occur in hospitals and a substantial proportion occur in special care units, raising questions about the appropriateness and quality of current end-of-life care practices in Canada.

A population profile of older adults with prescription encounters with nurse practitioners and family physicians in Ontario: a descriptive retrospective cohort study

BACKGROUND

Compared with patients in family physician practices, there is a poor understanding at a population level of patients in nurse practitioner practices. The study aim was to use Ontario administrative databases to identify the sociodemographic characteristics and comorbidities of patients aged 65 years and older who were prescribed medications by nurse practitioners and family physicians between 2000 and 2015.

METHODS

This population-based descriptive retrospective cohort study included patients 65 years of age and older with Ontario Health Insurance Plan eligibility and at least 1 prescription encounter with a nurse practitioner or family physician during the study period. Prescription identification of patients permitted their characterization by age, sex, geographical location, rurality, neighbourhood income and comorbidities. Patients were categorized into 3 provider groups on the basis of the percentage of prescription encounters with nurse practitioners versus family physicians.

RESULTS

In 2015, patients in the study cohort with prescriptions by nurse practitioners (n = 25 220) were younger than those with prescriptions by family physicians (40.3% were aged 65-69 yr) and they were more likely to be residents of low-income neighbourhoods (44.0% were in the lowest 2 neighbourhood income quintiles) and to be living outside of central Ontario. In contrast, patients who received prescriptions from family physicians (n = 1 952 904) tended to be older (26.8% were aged ≥ 80 yr), to have higher incomes (21.1% were in the highest neighbourhood income quintile) and to live in urban areas (86.5%). Mean Elixhauser Comorbidity Index scores were consistently lower among patients cared for by nurse practitioners than among those predominantly seen by family physicians (1.30 v. 2.04). The most prevalent conditions were hypertension and diabetes, regardless of provider.

INTERPRETATION

The patient characteristic with the highest variability between providers was geographic residence in the province. Elucidating patterns of care is critical for primary care policy and our results provide baseline data for future health care planning.

Characteristics of Nurse Practitioner Practice in Family Health Teams in Ontario, Canada

Nurse practitioners (NPs) in Ontario work in a number of settings, including physician-led, interprofessional Family Health Teams (FHTs). However, many aspects of NP practice within the FHTs are unknown. Our study aimed to describe the characteristics of NP practice in FHTs and the relationships between NPs and physicians within this model. This cross-sectional descriptive study analyzed NP service and diagnostic code data collected for every NP patient encounter from 2012 to 2015. Encounter data were linked to health administrative data housed at the Institute for Clinical Evaluative Sciences to allow for comparison with physician service and diagnostic codes. Findings demonstrated that NPs saw patients across all age groups for one to more than five problems per encounter and that NPs handled both acute and episodic care and chronic disease management issues. Patients with chronic conditions had more encounters with physicians than with NPs. In addition, compared to physicians, NPs saw more female than male patients. Our findings provide a snapshot of NP practice in FHTs and may be useful in informing other practice models in Ontario, elsewhere in Canada, and internationally. More evidence is needed, however, to clarify the responsibilities of the NPs in collaborative relationships with physicians and to embed policies that will ensure that NPs work to their full potential. In addition, applying service coding to all health care providers in FHTs could enhance data on interprofessional teams and the individual clinicians that comprise them.

Enhancing Postoperative Recovery of Cardiac Surgery Patients

The purpose of this trial was to determine the effectiveness of advanced practice nursing support on cardiac surgery patients’ during the first 5 weeks following hospital discharge. Patients ( N = 200) were randomly allocated to two groups: (a) an intervention group who received telephone calls from an advanced practice nurse (APN) familiar with their clinical condition and care needs, twice during the first week following discharge then weekly thereafter for 4 weeks, and (b) a usual care group. Measures of health-related quality of life (HRQL), symptom distress, satisfaction with recovery care, and unexpected health care contacts were obtained at 5 weeks following discharge. There were no significant group differences in HRQL, unexpected contacts with the health care system, or symptom distress. The provision of APN support via telephone followup after cardiac surgery is feasible. However, further randomized trials of single and multicomponent APN interventions are needed to prove effectiveness.

Trends in nurse practitioners' prescribing to older adults in Ontario, 2000-2010: a retrospective cohort study

BACKGROUND

Nurse prescribing is a practice that has evolved and will continue to evolve in response to emerging trends, particularly in primary care. The goal of this study was to describe the trends and patterns in medication prescription to adults 65 years of age or older in Ontario by nurse practitioners over a 10-year period.

METHODS

We conducted a population-based descriptive retrospective cohort study. All nurse practitioners registered in the Corporate Provider Database between Jan. 1, 2000, and Dec. 31, 2010, were identified. We identified actively prescribing nurse practitioners through linkage of dispensed medications to people aged 65 years or older from the Ontario Drug Benefit database. For comparison, all prescription medications dispensed by family physicians to a similar group were identified. Geographic location was determined based on site of nurse practitioner practice.

RESULTS

The number and proportion of actively prescribing nurse practitioners prescribing to older adults increased during the study period, from 44/340 (12.9%) to 888/1423 (62.4%). The number and proportion of medications dispensed for chronic conditions by nurse practitioners increased: in 2010, 9 of the 10 top medications dispensed were for chronic conditions. There was substantial variation in the proportion of nurse practitioners dispensing medication to older adults across provincial Local Health Integration Networks.

INTERPRETATION

Prescribing by nurse practitioners to older adults, particularly of medications related to chronic conditions, increased between 2000 and 2010. The integration of nurse practitioners into primary care has not been consistent across the province and has not occurred in relation to population changes and perhaps population needs.

Identification, summary and comparison of tools used to measure organizational attributes associated with chronic disease management within primary care settings

RATIONALE, AIMS AND OBJECTIVES

Given the increasing emphasis being placed on managing patients with chronic diseases within primary care, there is a need to better understand which primary care organizational attributes affect the quality of care that patients with chronic diseases receive. This study aimed to identify, summarize and compare data collection tools that describe and measure organizational attributes used within the primary care setting worldwide.

METHODS

Systematic search and review methodology consisting of a comprehensive and exhaustive search that is based on a broad question to identify the best available evidence was employed.

RESULTS

A total of 30 organizational attribute data collection tools that have been used within the primary care setting were identified. The tools varied with respect to overall focus and level of organizational detail captured, theoretical foundations, administration and completion methods, types of questions asked, and the extent to which psychometric property testing had been performed. The tools utilized within the Quality and Costs of Primary Care in Europe study and the Canadian Primary Health Care Practice-Based Surveys were the most recently developed tools. Furthermore, of the 30 tools reviewed, the Canadian Primary Health Care Practice-Based Surveys collected the most information on organizational attributes.

CONCLUSIONS

There is a need to collect primary care organizational attribute information at a national level to better understand factors affecting the quality of chronic disease prevention and management across a given country. The data collection tools identified in this review can be used to establish data collection strategies to collect this important information.

A cross-sectional study of breast cancer biomarkers among shift working nurses

Objectives In 2007, the International Agency for Research on Cancer classified long-term shift work as a probable carcinogen, with the strongest evidence for breast cancer. One proposed mechanism involves night-time light exposure and decreases in melatonin, a circadian rhythmic hormone. It is hypothesised that melatonin influences patterns of sex hormone production that in turn influence breast cancer risk. This study sought to investigate the relationships of shift work history, 6-sulfatoxymelatonin (aMTs-6, the primary melatonin metabolite) and sex hormone levels among shift working nurses. Design This is a cross-sectional biomarker study. Setting 94 premenopausal nurses who work a full-time rotating shift schedule at one Ontario hospital were recruited for this study; 82 completed follow-up. Primary and secondary outcome measures Study participants provided morning void urine and fasting blood samples for the assessment of aMTs-6 and sex hormone (oestradiol, oestrone, progesterone, prolactin) levels, respectively. These data were collected at two time points (summer and winter) such that relationships between melatonin and sex hormones could be assessed with respect to two time frames of interest (acute and cross-seasonal). Results An inverse relationship between aMTs-6 and oestradiol was suggested in the winter (β=-0.18, p=0.04), but this result was not statistically significant in multivariate modelling that adjusted for age, body mass index and menstrual cycle. Likewise, while oestradiol, oestrone and progesterone levels increased with greater years of shift work history (all p<0.05), these associations were attenuated after confounder adjustment. Conclusions These results do not support the proposed relationship between melatonin and sex hormone levels as biomarkers on the pathway of shift work and breast cancer but emphasise the importance of adjusting for confounders in modelling.

The prevalence of chronic pain and pain-related interference in the Canadian population from 1994 to 2008

Introduction

Estimates of the prevalence of chronic pain worldwide and in Canada are inconsistent. Our primary objectives were to determine the prevalence of chronic pain by sex and age and to determine the prevalence of pain-related interference for Canadian men and women between 1994 and 2008.

Methods

Using data from seven cross-sectional cycles in the National Population Health Survey and the Canadian Community Health Survey, we defined two categorical outcomes, chronic pain and pain-related interference with activities.

Results

Prevalence of chronic pain ranged from 15.1% in 1996/97 to 18.9% in 1994/95. Chronic pain was most prevalent among women (range: 16.5% to 21.5%), and in the oldest (65 years plus) age group (range: 23.9% to 31.3%). Women aged 65 years plus consistently reported the highest prevalence of chronic pain (range: 26.0% to 34.2%). The majority of adult Canadians who reported chronic pain also reported at least a few activities prevented due to this pain (range: 11.4% to 13.3% of the overall population).

Conclusion

Similar to international estimates, this Canadian population-based study confirms that chronic pain persists and impacts daily activities. Further study with more detailed definitions of pain and pain-related interference is warranted.

The prevalence of chronic pain and pain-related interference in the Canadian population from 1994 to 2008

INTRODUCTION

Estimates of the prevalence of chronic pain worldwide and in Canada are inconsistent. Our primary objectives were to determine the prevalence of chronic pain by sex and age and to determine the prevalence of pain-related interference for Canadian men and women between 1994 and 2008.

METHODS

Using data from seven cross-sectional cycles in the National Population Health Survey and the Canadian Community Health Survey, we defined two categorical outcomes, chronic pain and pain-related interference with activities.

RESULTS

Prevalence of chronic pain ranged from 15.1% in 1996/97 to 18.9% in 1994/95. Chronic pain was most prevalent among women (range: 16.5% to 21.5%), and in the oldest (65 years plus) age group (range: 23.9% to 31.3%). Women aged 65 years plus consistently reported the highest prevalence of chronic pain (range: 26.0% to 34.2%). The majority of adult Canadians who reported chronic pain also reported at least a few activities prevented due to this pain (range: 11.4% to 13.3% of the overall population).

CONCLUSION

Similar to international estimates, this Canadian population-based study confirms that chronic pain persists and impacts daily activities. Further study with more detailed definitions of pain and pain-related interference is warranted.

Back pain of working pregnant women: identification of associated occupational factors

The objective of this study was to identify major occupational factors that were significantly correlated with back pain in pregnant women working in higher education, health care and service areas. A total of 73 working pregnant women were surveyed using questionnaires specifically designed for evaluating correlations between occupational factors and severity of back pain; 37 women were interviewed at both 20 and 34 weeks of pregnancy, 17 at 20 weeks only, and 19 were interviewed at 34 weeks only. "Rest breaks allowed" and "job autonomy" were negatively correlated with severity of back pain at 20 weeks of pregnancy. "Staying in a confined area" and "having restricted space" were positively correlated with severity of back pain at 34 weeks of pregnancy. The study suggests that allowing pregnant women to take more rest breaks and to have more job autonomy may reduce the severity of back pain during early pregnancy, and that allowing movement outside the working area and providing less restricted space may reduce back pain during late pregnancy.

Influences of body mass index and waist circumference on physical function in older persons with heart failure

BACKGROUND

In older persons with heart failure (HF), body composition may influence physical function and treatment effectiveness. There is a lack of research concerning the associations between waist circumference (WC) or body mass index (BMI) and physical function in this population.

OBJECTIVE

To determine whether BMI and WC are associated with physical function in older men and women with HF.

METHODS

Seventy-one men and 36 women 65 years of age and older living with HF completed two surveys spaced three months apart. Height, weight, WC, time since diagnosis, edema, comorbidities and physical function were self-reported at baseline and follow-up. Physical function was determined using the physical component score of the Short Form-12 and the physical limitation domain (PLD) of the Kansas City Cardiomyopathy Questionnaire. Multivariate linear regression and analysis of covariance were used to evaluate the relationships between WC and BMI, as well as cross-classifications of WC and BMI with physical function, after adjusting for confounders and interactions.

RESULTS

The cross-sectional and short-term follow-up analyses did not detect an association between WC or BMI and physical function, with the exception of changes in the PLD, which were significantly different across WC categories. Persons with a moderate WC experienced the greatest improvement in function. The physical component and PLD scores were lower than those reported by Canadians 75 years of age and older and stable HF patients, respectively. Women reported lower physical function scores than men.

CONCLUSION

Findings from the present study indicate that older persons with HF, especially women, have poor physical functioning regardless of their WC or BMI.

Understanding the supportive care needs of parents of children with cancer: an approach to local needs assessment

The objective of this study was to conduct an assessment of supportive care needs from the perspective of parents of children diagnosed with cancer within an urban-rural region in Eastern Ontario, Canada. Guided by a conceptual framework for supportive care, the exploratory, mixed-method study used a standard needs survey and semistructured interviews. Fifteen parents completed (75% response rate) the survey, and 3 parents participated as key informants in the follow-up interview. Parents reported needs in all 6 of the need categories outlined within the Supportive Care Needs Framework. The proportion of parents expressing a need ranged from 23% to 39%. Dealing with the fear of their child's cancer spreading was frequently identified by parents. Emotional and informational needs were the 2 most frequently acknowledged categories of need. With further refinement, the use of the conceptual framework will provide a methodology for planning care based on the individual needs identified by parents of children with cancer.

The symptom of pain in individuals recently hospitalized for heart failure

The symptom of pain is not typically associated with heart failure. Yet, emerging evidence suggests that pain is an important issue for this population.

OBJECTIVES

(1) To determine whether pain was reported by a cohort of individuals with heart failure at the time of discharge from hospital, at 2 and 6 weeks postdischarge; (2) To examine the profile of individuals who reported pain at discharge and to determine if there were differences from individuals who did not report pain; (3) To determine whether there was a difference in health-related quality of life between reported pain and no pain groups.

METHODS

This study was part of a larger randomized controlled trial with a 3-month follow-up. Data were obtained from 169 individuals diagnosed with heart failure who completed the first 6 weeks of the follow-up period.

RESULTS

At time of discharge, 68% of the cohort reported pain. Both frequency and severity of pain fluctuated throughout the study for the entire cohort. There were no sociodemographic characteristics that distinguished those who reported pain from those who did not report pain. Differences in health-related quality of life were found between the reported pain and no pain groups at discharge and week 2. Depression, worry, feeling a loss of control over one's life, and feeling as if one was a burden to family were significantly more prevalent in individuals who reported pain. Differences were also found in self-rated health status, and number of prescription medications taken daily. Throughout the 6 weeks, 63 individuals (37%) consistently reported pain and 23 (14%) never reported pain.

CONCLUSION

Pain was a concern for this cohort of individuals diagnosed with heart failure and was noted to impact their health-related quality of life. Further research is needed into the nature of the pain and the role of pain in self-management once patients are discharged home.

Measurement of the Caregiving Experience in Caregivers of Persons Living With Heart Failure: A Review of Current Instruments

BACKGROUND

Current evidence suggests that caring for someone with heart failure (HF) often imposes physical and emotional demands on primary caregivers that may lead to emotional distress or impaired quality of life. The purpose of this literature review was to provide a comprehensive description of the measurement tools used for assessing the subjective experience of primary caregivers for persons living with HF.

METHODS

CINHAL, MEDLINE, EMBASE, PsychINFO, the Cochrane Collaboration, and PubMed databases (1985 to June 2006) were searched for studies that directly measured the caregiving experience.

RESULTS

Seven studies yielding 6 different instruments were reviewed. The majority of studies were cross-sectional, descriptive, and correlational designs. Caregivers were predominately female spouses with a mean age ranging from 54 to 63 years.

CONCLUSIONS

Limitations in study designs and nonstandardized approaches to measurement of caregiving limit the ability to confidently recommend a specific existing tool for measuring this construct in the population with HF. However, on the basis of the results from this review, the Caregiver Reaction Assessment tool seems to have the greatest potential for quantitatively measuring the subjective experience of caregiving in HF. Its ease of administration, strong psychometric properties in the medical populations, and attention to the positive and negative experiences associated with caregiving make it a most promising generic tool.

Fatigue and Physical Activity in Older Adults With Cancer

Cancer is a disease predominantly affecting older adults. Cancer fatigue is the most common and often most distressing symptom associated with cancer and its treatment, often persisting months to years after treatment. Untreated cancer fatigue may lead to significant reductions in physical activity, physical functioning, and quality of life and may interfere with patients' adherence to cancer treatment. Physical activity has the strongest supporting evidence as an intervention to reduce cancer fatigue, maintain physical function, and optimize quality of life. This article reviews the literature related to fatigue and physical activity in older adults with cancer. Nine experimental and 10 observational studies that enrolled subjects 65 years or older were synthesized in the review and provided evidence that physical activity may be an effective intervention for cancer fatigue in older adults. The generalizability of the findings to older adults was limited by the poor representation of this age group in the studies. Few studies provided an analysis of age-related effects of physical activity on fatigue, physical function, and quality of life.

The symptom of pain with heart failure: a systematic review

BACKGROUND

Pain is one of the most compelling reasons for seeking medical attention. Despite frequent hospitalizations and assessments, the symptom of pain is not often associated with heart failure (HF). The role of pain in exacerbations and hospitalization may be important. A systematic review to synthesize research related to reported pain in patients with HF was undertaken and factors considered to be related to the symptom of pain in this population were identified.

METHODS AND RESULTS

Relevant articles were identified using MEDLINE, CINAHL, EMBASE, and the Cochrane Library. Included studies focused on patients with HF and reporting on pain. Nine descriptive studies were identified. Five studies focused specifically on patients with HF. The remaining studies examined a population of seriously ill patients including those with HF as an itemized subset. From 23% to 75% of patients with HF reported pain. Factors identified as related to pain include: anxiety, depression, quality of life rated as poor, dyspnea, and more dependencies in activities of daily living.

CONCLUSION

People with HF report having pain but as a complex health group, the symptom of pain is not well understood. Pain could be a contributing factor in the breakdown of self-management and the cycle of exacerbations and hospitalization.

Analysis of self-reported problematic tasks for pregnant women

The objective of this study was to identify major components of, and influential factors in, problematic tasks performed by pregnant women employed in education, health care and service areas. Seventy-two pregnant women were surveyed using specially designed questionnaires consisting of an Initial Survey, a Job Analysis Questionnaire and a Task Description Questionnaire. Forty-four subjects (60%) had difficulty performing at least one work task and reported 105 tasks that were problematic at work. Reaching above the head, bending forward, bending and twisting, pushing, repeating actions and working at a fast pace were identified as the task components requiring the greatest level of effort. Excessive effort, excessive time, getting tired, repetitive actions, stress and fear of injury were identified as factors that had strong associations with the six major task components. Findings of this study suggest that these task components and factors should be considered when designing, assigning or analysing tasks for working pregnant women.

Reproducibility of a task description questionnaire for working pregnant women

The objective of this study was to evaluate the reproducibility of a Task Description Questionnaire that was designed to investigate exposures to, and influential factors for, problematic tasks experienced by working pregnant women. The questionnaire comprised questions concerning 22 task components (covering working posture, manual material handling, work pace, prolonged postures and others), eight influential factors contributing to problematic tasks, discomfort (measured using a body map) and level of effort to perform the tasks. Reproducibility of the questionnaire was assessed by interviewing participants on two occasions one week apart for interviews at both 20 and 34 weeks of pregnancy. Eleven and 13 problematic tasks were reported by 21 working pregnant women at 20 and 34 weeks of pregnancy, respectively. These tasks were surveyed using the Task Description Questionnaire. Kappa statistics and correlation coefficients (supplemented by paired t-tests) were used to examine the reproducibility of responses to the questionnaire. The results showed that most of the variables were measured with very good or satisfactory reproducibility. The reproducibility of exposure to work posture was higher than that of exposure to manual material handling. There was no significant difference between test and retest means for the discomfort scores measured on the body map, except for the maximum discomfort score for the whole body in the 34 weeks survey. The study suggests that the questionnaire can be reliably used in the study of problematic tasks experienced by pregnant women. But an initial preview of the questions by the subjects and explanation of the questions given to the subjects by the interviewer may help to produce more reliable results.

The effect of unrestricted oral carbohydrate intake on labor progress

OBJECTIVE

To determine if unrestricted oral carbohydrate intake during labor reduced the incidence of dystocia in low-risk nulliparous women.

DESIGN AND SETTING

A randomized clinical trial at a university-affiliated hospital in southeastern Ontario. Low-risk nulliparous women were randomized between 30 and 40 weeks gestation to either an intervention or usual care group.

INTERVENTION

Women in the intervention group received, prenatally, guidelines about food and fluid intake during labor and were encouraged to eat and drink as they pleased during labor. Women in the usual care group received no prelabor information and were restricted to ice chips and water during labor in the hospital.

MAIN OUTCOME MEASURE

The incidence of dystocia, defined as a cervical dilatation rate of less than 0.5 cm/hr for a period of 4 hrs after a cervical dilatation of 3 cm.

RESULTS

Three hundred twenty-eight women were randomized to the intervention (n = 163) or usual care (n = 165) groups. Women in the intervention group reported a significantly different pattern of oral intake during early labor in the hospital (chi(2) = 40.7, p < .001). The incidence of dystocia was 36% (n = 58) in the intervention group and 44% (n = 72) in the usual care group and was not significantly different (OR = 0.71, 95% CI = 0.46, 1.11). There were no significant differences in the other secondary outcomes or in the incidence of adverse maternal or neonatal complications.

CONCLUSION

Eating and drinking early in labor had no significant impact on the incidence of dystocia and/or adverse maternal or neonatal outcomes.

Measuring the symptom experience of seriously ill cancer and noncancer hospitalized patients near the end of life with the memorial symptom assessment scale

The objectives of this study were twofold: (1) to explore and compare the symptom experience of seriously ill hospitalized cancer and noncancer patients near the end of life using the Memorial Symptom Assessment Scale (MSAS) and (2) to determine if the MSAS is a valid and useful measure of symptom distress for patients with noncancer conditions. This was a prospective cohort study of hospitalized patients with end-stage congestive heart disease, chronic pulmonary disease, cirrhosis, or metastatic cancer. Eligible patients were interviewed to ascertain symptom prevalence, severity and distress using the MSAS and levels of fatigue using the Piper Fatigue Scale (PFS). Sixty-six patients with metastatic cancer and 69 patients with end-stage disease were enrolled in the study. There was a significant difference in the prevalence of selected physical symptoms, but not psychological symptoms, between cancer and noncancer patients. There were no significant differences in symptom distress scores, a computed score of frequency, severity and distress, if the symptom was present. In both groups the principal components factor analysis with varimax rotation yielded one factor comprising psychological symptoms and a second factor comprising three subgroups of physical symptoms. Internal consistency was high for the psychological subscale (Cronbach alpha coefficients of 0.85 for the cancer group and 0.77 for the noncancer group) and for the physical subscale groupings, with coefficients ranging between 0.78 to 0.87. The symptom scores were significantly correlated with perceptions of fatigue. These findings show that both seriously ill cancer and noncancer patients experience symptom distress, and that the MSAS seems to be a reliable measure of symptom distress in noncancer patients, as well as with cancer patients.

The sleep experience of medical and surgical patients

This study described and compared the sleep experience of medical and surgical patients during a hospital stay. During 3 consecutive nights, patients (n = 110) self-reported sleep quality using the Verran and Snyder Sleep Scale (VSH) and potentially disruptive factors using items from the Factors Influencing Sleep Questionnaire (FISQ). Surgical patients, on the first night, received more procedural care (p = .001), less sedative medication (p < .001), reported more sleep disturbance (p = .02), less sleep effectiveness (p = .03), and more need for sleep supplementation (p = .03). Variance in sleep effectiveness was explained by the FISQ score, age, and length of time in hospital (F = 6.86, p < .001). The sleep experience of patients varies between diagnostic groupings and across the hospital stay. Unit environmental and personal factors, factors that are amenable to therapeutic interventions, strongly influence the sleep experience.

Decision-making in the ICU: perspectives of the substitute decision-maker

OBJECTIVE

To describe the substitute decision-makers' perspectives related to decision-making in the intensive care unit (ICU) and to determine those variables associated with their overall satisfaction with decision-making.

DESIGN

Prospective, multicenter, cohort study.

SETTING

Six Canadian university-affiliated ICUs.

PATIENTS AND PARTICIPANTS

We distributed a validated, self-administered questionnaire assessing 21 key aspects of communication and decision-making to substitute decision-makers of ICU patients who were mechanically ventilated for more than 48 h.

INTERVENTION

None.

MEASUREMENTS AND RESULTS

A group consisting of 1,123 substitute decision-makers received questionnaires; 789 were returned (70.3% response rate). Respondents were most satisfied with the frequency of communication with nurses and least satisfied with the frequency of communication with physicians. In terms of overall satisfaction with decision-making, 560 (70.9%) of the respondents were either completely or very satisfied. The majority (81.2%) of respondents preferred some form of shared decision-making process. Factors contributing the most to satisfaction with decision-making included: complete satisfaction with level of health care the patient received, completeness of information received, and feeling supported through the decision-making process. Satisfaction with decision-making varied significantly across sites.

CONCLUSIONS

In this multicenter observational study, we found that most substitute decision-makers for ICU patients wanted to share decision-making responsibility with physicians and that, overall, they were satisfied with their decision-making experience. Adequate communication, feeling supported, and achieving the appropriate level of care for their family member were key determinants of satisfaction with decision-making in the ICU.

Family satisfaction with care in the intensive care unit: results of a multiple center study

OBJECTIVE

To determine the level of satisfaction of family members with the care that they and their critically ill relative received.

DESIGN

Prospective cohort study.

SETTING

Six university-affiliated intensive care units across Canada.

METHODS

We administered a validated questionnaire to family members who made at least one visit to intensive care unit patients who received mechanical ventilation for >48 hrs. We obtained self-rated levels of satisfaction with 25 key aspects of care related to the overall intensive care unit experience, communication, and decision making. For family members of survivors, the questionnaire was administered while the patient was still in the hospital. For family members of nonsurvivors, the questionnaire was mailed out to the family member 3-4 wks after the patient's death.

MAIN RESULTS

A total of 891 family members received questionnaires; 624 were returned (70% response rate). The majority of respondents were satisfied with overall care and with overall decision making (mean +/- sd item score, 84.3 +/- 15.7 and 75.9 +/- 26.4, respectively). Families reported the greatest satisfaction with nursing skill and competence (92.4 +/- 14.0), the compassion and respect given to the patient (91.8 +/- 15.4), and pain management (89.1 +/- 16.7). They were least satisfied with the waiting room atmosphere (65.0 +/- 30.6) and frequency of physician communication (70.7 +/- 29.0). The variables significantly associated with overall satisfaction in a regression analysis were completeness of information received, respect and compassion shown to the patient and family member, and the amount of health care received. Satisfaction varied significantly across sites.

CONCLUSIONS

Most family members were highly satisfied with the care provided to them and their critically ill relative in the intensive care unit. Efforts to improve the nature of interactions and communication with families are likely to lead to improvements in satisfaction.

The 2000 Helene Hudson Memorial Lecture. Decisional role in seriously ill hospitalized patients near the end of life: the patient's and provider's perspective

Decisions about whether or not to implement life-sustaining therapies are complex and are becoming more so as the ability to prolong life with advanced technologies and care increases. The objectives of this study were: (1) to determine seriously ill hospitalized patients' preferences for decisional role with respect to decisions about life-sustaining treatments, and (2) to determine if providers were aware of patients' preferences. This prospective, descriptive pilot study was conducted at an Ontario teaching hospital. One hundred and seventeen seriously ill adult patients admitted with cancer and non-cancerous conditions participated in a structured interview. Fifty-three nurses and 63 physicians responsible for the care of the participating patients also participated. Patients and providers were asked similar questions about end-of-life discussions and preference for decisional responsibility for life-sustaining treatments. Most patients (n = 89, 77%) had thought about end-of-life issues and were willing to discuss these with their physicians and nurses, but few (n = 37, 37%) reported such discussions. Preferences for decisional role varied; most indicated a preference for a shared role (n = 80, 80%) and there were no differences in patients with or without cancer. Generally, both physicians and nurses were not aware of or did not determine accurately patient preferences for decisional role. The findings from this study show that seriously ill hospitalized patients have thought about and are willing to share in discussions about end-of-life care with their providers, yet many have not.

The effect of staff nurse participation in a clinical nursing research project on attitude towards, access to, support of and use of research in the acute care setting

The purpose of this study was to determine the effect of participation in research on staff nurses' attitude towards, access to, perceived support of and reported use of research in practice. Six medical surgical units in a southeastern Ontario teaching hospital were randomly assigned to receive 3 different levels of exposure to research: high, low and usual. On the high participation units, a clinical research group consisting of the investigator and interested nurses (n = 18) critiqued research literature related to an important clinical issue (i.e., patterns of sleep) and designed and implemented a clinical research study. On the low participation units, a similar clinical research group (n = 10) met once and were involved, solely, in the design and implementation of the clinical research protocol. On the control units, there were no formalized research groups or activities. All registered nurses (n = 235), including the research group participants, on the 6 units were surveyed with a research utilization questionnaire (RUQ) pre and post participant intervention. The RUQ scores were higher on the high participation units at baseline and post intervention in comparison to the low and control units. Nurses who participated directly in the clinical research groups (high and low) reported similar RUQ scores post intervention and higher scores in comparison to all nurses. All RUQ scores were higher post intervention. Nurses with clinical expertise but minimal research expertise participated meaningfully in clinical research. While participation had an individual effect there was no unit effect, suggesting other factors, such as organizational support and culture, are important determinants of research use.

Measuring family satisfaction with care in the intensive care unit: the development of a questionnaire and preliminary results

PURPOSE

To develop and test the feasibility of administering a questionnaire to measure family members' level of satisfaction with care provided to them and their critically ill relative.

MATERIALS AND METHODS

To develop the questionnaire, existing conceptual frameworks of patient satisfaction, decision making, and quality of end-of-life care were used to identify important domains and items. We pretested the questionnaire for readability, clarity, and sensibility in 21 family members and 16 professionals. To assess validity, we measured the correlation between satisfaction with overall care and satisfaction with decision making. To assess the reliability of the questionnaire, we administered the questionnaire to next of kin of surviving patients on discharge and 7 to 10 days later.

RESULTS

Questionnaires were mailed out to 33 family members of nonsurvivors; 24 were returned completed but only 22 (66%) were usable.Twenty-five family members of eligible surviving critically ill patients participated in the test-retest part of this study. Of the 47 respondents, 84% were very satisfied with overall care and 77% were very satisfied with their role in the decision making. There was good correlation between satisfaction with overall care and satisfaction with decision making (correlation coefficient =.64). The assessment of overall satisfaction with care was shown to be reliable (correlation coefficient =.85).

CONCLUSIONS

This questionnaire has some measure of reliability and validity and is feasible to administer to next of kin of critically ill patients.

Who knows best: the patient or the provider? A nursing perspective

Who knows best: the patient or the provider? My opinion, based on a review of the literature and practical experience, is that the patient, the provider and the system each offer a unique perspective that we can draw upon in ensuring quality care across the continuum. Nurses have a unique body of knowledge and skill that they bring to each interaction with the patient. They must have an awareness of the patient's and the system's expectations and interact and negotiate realistic expectations for each. The maintenance of balanced expectations and the measurement of effectiveness will continue to be a challenge. However, patients should be involved in and direct aspects of their care and feel satisfied with the process. Ultimately, nurses and the hospitals in which they work are responsible for providing effective and satisfying care. I would like to end by reinforcing the importance of the patient's voice in the provision of compassionate care. It is disheartening to read about patients' experiences of "discompassionate healthcare" (Holloway 1999). Yet I am reassured when I read or experience examples of compassionate and effective care such as that outlined by Valerie McDonald. (Hospital Quarterly Winter 1999/2000) Ms. McDonald, a former social worker and adult educator, is the mother of three daughters, one who had Burkitt's lymphoma diagnosed in 1994 and a second who had acute lymphostatic leukemia diagnosed in 1997 and who died recently in 1999. McDonald provided a wonderful perspective about her hospital experiences--the good and the bad. There would be no denying from this report that patients know the key qualities necessary for effective and compassionate care and that this mother recognized the energy and time it took to provide this care. "I hope," she states, "as the dust settles from restructuring and cutbacks that hospital staff will still have the time, energy and flexibility to practice the art of healing as they did with my children" (p. 24). I too reinforce that we must ensure nurses (and others) have the resources, the flexibility within their roles and the knowledge and skill to practise both the art and science of nursing.

Dying in Canada: is it an institutionalized, technologically supported experience?

Although preliminary evidence shows that people generally prefer to die at home, very little is known about where Canadians die. Understanding the epidemiology of dying in Canada may illuminate opportunities to improve quality of end-of-life care and related health policy. We conducted a cross-sectional analysis of death records in Canada to determine the proportions of deaths occurring in hospitals and special care units. Our analysis found that deaths in Canada occur in hospitals with provincial and territorial proportions ranging from 87% in Quebec to 52% in the Northwest Territories. In hospitals recording deaths in special care units, 18.64% of all deaths occurred in special care units. The proportion of deaths in special care units ranged from 25% in Manitoba to 7% in the Northwest Territories. The proportion of deaths in special care units varied by size and nature (teaching vs. non-teaching) of hospitals. It increased with the size of the hospital from 8% in hospitals with 1-49 beds, to 23% for hospitals with 400 or more beds. In teaching hospitals, 27% of deaths occurred in special care units, and in non-teaching hospitals the proportion was 15%. In conclusion, the majority of deaths in Canada occur in hospitals and a substantial proportion occur in special care units, raising questions about the appropriateness and quality of current end-of-life care practices in Canada.

Fetal responses to maternal strength conditioning exercises in late gestation

Cardiovascular responses to strength conditioning exercises were examined in 12 healthy pregnant women and their unborn fetuses during the third trimester. A group of 12 healthy nonpregnant women of similar ages, parity, body height, and pre-pregnant body mass was also studied. Maternal heart rate and blood pressure and fetal heart rate (FHR) responses were measured in both the supine (30 degrees tilt) and seated postures during handgrip (HG), single-leg extension (SL), and double-leg extension (DL) exercise. Subjects performed 3 sets of 10 reps at 50, 70, and 90% of their 10-repetition maximum (10-RM) for each exercise in both postures. Pregnant subjects exhibited higher heart rates but similar blood pressure responses to control subjects under all experimental conditions. Significant increases were observed for the frequency of FHR accelerations (0.10 to 0.27/min) from rest to DL in the sitting posture at 90% RM. Moderate fetal bradycardia was observed occasionally in the tilted supine posture at rest and both during (SL, DL) and following (HG, SL, DL) exercise, suggesting that this posture should be avoided in late gestation. The results support the safety of moderate strength conditioning exercises in healthy pregnancy.

The emergence of a culture that promotes evidence based clinical decision making within an acute care setting

Nursing research programs within acute care hospitals are essential to the development and integration of nursing knowledge, difficult to implement and rarely evaluated. The purpose of this paper is three fold: (1) to describe the development, structures, and processes of a nursing research program within an acute care teaching hospital and (2) to describe selected evaluation outcomes and (3) to discuss future directions.

A nursing research utilization strategy for staff nurses in the acute care setting

The importance of research-based nursing practice is well recognized. However, typically, strategies to incorporate research findings into nursing practice have not been evaluated in terms of staff nurse outcomes. Thus, the purpose of this project was to evaluate the effectiveness of a research utilization strategy for staff nurses in the neonatal intensive care unit of a community teaching hospital. This project was intended to serve as a model for the incorporation of research findings into nursing practice on other nursing units in the acute care setting.