Publications by authors named "Edith Pituskin"

Article Synopsis
  • Individuals with long COVID experience persistent symptoms like fatigue, muscle weakness, and mental health issues that significantly affect their quality of life and independence.
  • The BLEND study evaluates a digital wellness platform (My Viva Plan) over 8 weeks to see if it can improve health outcomes compared to usual care for those with post-COVID-19 condition.
  • The primary focus is on the feasibility of using the platform, while secondary outcomes include changes in nutrition, physical activity, and overall well-being after the intervention.
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Aims: Cardiovascular disease (CVD) is a leading cause of mortality in childhood cancer survivors (CCS) that may be related to the cardiotoxic effects of radiation or chemotherapy and concomitant reductions in cardiorespiratory fitness. Therefore, we sought to compare cardiorespiratory fitness (peak oxygen uptake, V̇O2peak) between CCS and age-matched non-cancer controls (CON). Secondary outcomes included hemodynamics and resting cardiac function.

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Introduction: Short-term clinical outcomes from SARS-CoV-2 infection are generally favorable. However, 15-20% of patients report persistent symptoms of at least 12 weeks duration, often referred to as long COVID. Population studies have also demonstrated an increased risk of incident diabetes and cardiovascular disease at 12 months following infection.

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  • The study aimed to evaluate the accuracy of 40 predictive equations for estimating resting energy expenditure (REE) in women with breast cancer, comparing these predictions to measurements taken by indirect calorimetry.
  • The analysis included data from 90 participants (24% survivors, 61.1% early-stage cancer), revealing that none of the equations provided accurate REE estimates both at the group and individual levels, with significant biases observed.
  • These findings highlight the importance of using precise methods for calculating energy needs in women with breast cancer, as inaccuracies can impact treatment and recovery by influencing energy intake.
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  • This study aimed to assess the effectiveness of a cardiac rehabilitation (CR)-modeled intervention for breast cancer patients in reducing cardiotoxicity from chemotherapy.
  • Results showed no significant differences in heart function measures between the CR intervention group and usual care group after 52 weeks; both groups experienced some adverse cardiac changes over time.
  • However, the CR intervention did lead to significant reductions in total cholesterol and low-density lipoprotein levels, suggesting some benefits in cardiovascular risk management.
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  • People with advanced cancer have special needs that aren't always met, so more research is needed to help them.
  • A team working on this topic, including people who have experienced it themselves, talked to others and looked at different ways to involve patients in research.
  • They created a new plan to make sure these patients can partner with researchers, which can help improve rehabilitation strategies for people with advanced cancer.
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Article Synopsis
  • Exercise intolerance is frequently experienced by survivors of breast cancer.
  • This exercise intolerance stems from issues with the heart, blood vessels, and skeletal muscles.
  • To tackle these issues, comprehensive rehabilitation strategies or medication may be required.
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Background: Urinary incontinence (UI), erectile dysfunction and cardiometabolic conditions are common after prostatectomy for prostate cancer (PCa). Although physical activity could improve overall survival and quality of survivorship, fear of UI can restrict participation in exercise. Individuals with PCa could benefit from therapeutic exercise programming to support continence recovery and cardiometabolic health.

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Purpose: Improvements in diagnosis and treatment mean that the long-term health of breast cancer survivors (BCS) is increasingly dictated by cardiovascular comorbidities. This is partly a consequence of exposure to cardiotoxic therapies, which result in cardiac dysfunction and decreased cardiorespiratory fitness (CRF). Exercise training (ExT) is a key therapeutic strategy for secondary prevention and increasing CRF in adults with established cardiovascular disease.

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Background: Although some cancer therapies have overt and/or subclinical cardiotoxic effects that increase subsequent cardiovascular risk in breast cancer patients, we have recently shown that the breast tumor itself can also induce cardiac hypertrophy through the activation of the endothelin system to contribute to cardiovascular risk. However, the extent to which the suppression of the activation of the endothelin system could improve cardiac remodeling in breast cancer patients has yet to be investigated.

Objectives: We aimed to retrospectively assess the cardiac morphology/function in patients with breast cancer before receiving cancer chemotherapy and to investigate if the suppression of the activation of the endothelin system improves cardiac remodeling in a mouse model of breast cancer.

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With significant improvements in the understanding of cancer biology, improved detection, and the use of novel adjuvant therapies, each year more Canadians are surviving a cancer diagnosis. Despite their effectiveness these therapies often result in short- and long-term deleterious effects to major organ systems, particularly cardiovascular. Cardio-oncology is an emerging field of study with the aim to improve cardiovascular health across the oncology disease spectrum.

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Background: Many patients with breast cancer receive therapies with the potential to cause cardiotoxicity. Echocardiography and multiple-gated acquisition (MUGA) scans are the most used modalities to assess cardiac function during treatment in high-risk patients; however, the optimal imaging strategy and the impact on outcome are unknown.

Methods: Consecutive patients with stage 0-3 breast cancer undergoing pre-treatment echocardiography or MUGA were identified from a tertiary care cancer center from 2010-2019.

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Background: Rural Canadian populations face many challenges due to their geographical isolation, including inaccessible and inequitable primary health care. Specifically, pregnant women are at risk of not receiving prenatal care (PNC) due to physical and social barriers. Inadequate PNC can have detrimental effects on both maternal and neonatal health outcomes.

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Article Synopsis
  • The study examined the relationship between phase angle (PhA) and health-related physical fitness in older breast cancer survivors who underwent chemotherapy.
  • PhA was measured using bioelectrical impedance analysis (BIA), and the research involved 22 women aged 60+ who also participated in cardiopulmonary exercise tests and MRI scans.
  • Results indicated that higher PhA correlates with improved cardiorespiratory fitness, greater skeletal muscle volume, and lower myosteatosis, suggesting better overall muscle health in this population.
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Background: Exercise can help mitigate side effects of hematopoietic stem cell transplantation (HSCT), particularly when initiated before HSCT. However, the exercise-related barriers, facilitators, and preferences of this population remain unclear.

Objective: This study aimed to explore the patient experience to inform future implementation of a prehabilitation intervention.

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  • This study analyzed the effects of an 8-week time-restricted eating (TRE) intervention on body composition in women over 60 who had completed chemotherapy for early-stage breast cancer.
  • Results showed significant reductions in body weight and total fat mass, while most participants exhibited low phase angles indicating poorer cell health and hydration issues.
  • The findings suggest that TRE can lead to improved body composition metrics in obese participants, highlighting the usefulness of bioelectrical impedance vector analysis (BIVA) for assessing these changes.
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Article Synopsis
  • The study evaluated a telephone-based time-restricted eating (TRE) intervention targeting breast cancer survivors aged 60+, focusing on its implementation and initial effects on metabolic health.
  • Participants followed an 8-week TRE schedule, showing high adherence and acceptable costs, but no significant improvements in metabolic markers or body composition were observed overall.
  • The findings suggest that while the intervention is feasible and acceptable, a longer duration may be necessary for better metabolic outcomes, along with guidance on protein intake.
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Article Synopsis
  • Metabolic issues and excess fat gain can occur during breast cancer treatment, impacting patient health.
  • A study aims to assess a combination of time-restricted eating, healthy eating, and reduced sedentary behavior during chemotherapy on visceral fat and other health risks in early-stage breast cancer patients.
  • The trial involves 130 women and compares a multimodal intervention delivered by dietitians to standard care, with outcomes measured through MRI, blood tests, and blood pressure assessments at key points.
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A survey was conducted to identify barriers and facilitators to engaging in virtual and in-person cancer-specific exercise during COVID-19. A theory-informed, multi-method, cross-sectional survey was electronically distributed to 192 individuals with cancer investigating preferences towards exercise programming during COVID-19. Respondents had previously participated in an exercise program and comprised two groups: those who had experience with virtual exercise programming ('Virtual') and those who had only taken part in in-person exercise ('In-Person').

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Article Synopsis
  • Women with breast cancer (BC) experience reduced exercise tolerance and fatigue, similar to those with heart failure with preserved ejection fraction (HFpEF), impacting their physical function and quality of life.
  • The review examines how issues in oxygen transport, particularly through cardiac, vascular, and skeletal muscle functions, contribute to exercise intolerance in BC survivors.
  • It suggests that chemotherapy and unhealthy lifestyle choices may heighten the risk of developing HFpEF in women who have undergone treatment for breast cancer.
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Introduction: Conscience is central to moral decision making. In the context of morally pluralistic workplaces today, healthcare professionals' conscience may prompt them to make moral decisions to refrain from providing services they morally disagree with. However, such decisions are largely viewed as contentious, giving rise to polarising arguments for and against healthcare professionals' freedom of conscience.

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