Camilla Zimmermann

Camilla Zimmermann
University Health Network | UHN · Department of Supportive Care

MD, PhD

About

369
Publications
77,365
Reads
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16,153
Citations
Citations since 2017
182 Research Items
11964 Citations
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Additional affiliations
July 2016 - present
University of Toronto
Position
  • Professor
July 2011 - present
Faculty of Medicine
Position
  • Rose Famiily Chair in Supportive Care
January 2006 - present

Publications

Publications (369)
Article
e16293 Background: Upper abdominal / lower back pain characterizes celiac plexus involvement from pancreatic and other cancers which may impair HRQOL; its satisfactory treatment is an unmet clinical need. We hypothesized that ablative radiation delivered to the celiac plexus would decrease pain and improve HRQOL. Methods: An international single ar...
Article
6640 Background: Randomized controlled trials have demonstrated that palliative care can improve both quality of life and survival for outpatients with advanced cancer, but there is limited population-based data on the value of inpatient palliative care. We assessed palliative care as a component of high-value care among a nationally representative...
Article
12026 Background: More than one in ten adults in the US are family caregivers, with cancer among the most common diagnoses of care recipients. Family caregivers of patients with advanced cancer often have poor quality of life (QOL) and mental health. We examined the effectiveness of interventions offering support for caregivers of patients with adv...
Article
e18504 Background: Access to high-quality care, including SPC, is known to vary according to SES. The effect of SES on access to SPC during the COVID-19 pandemic remains unknown. We measured the association of SES with SPC use in different care settings among people who died with cancer before and during the COVID-19 pandemic. Methods: This retrosp...
Article
Objectives: To describe the delivery of palliative care by primary providers (PP) and specialist providers (SP) to hospitalized patients with COVID-19. Methods: PP and SP completed interviews about their experiences providing palliative care. Results were analyzed using thematic analysis. Results: Twenty-one physicians (11 SP, 10 PP) were interview...
Article
Objectives/purpose: Early palliative care (EPC) is widely recommended but its implementation may be challenging. We conducted a qualitative analysis of Canadian palliative care physicians' opinions about conditions necessary to provide EPC. Methods: A survey assessing attitudes and opinions regarding EPC was distributed to physicians providing p...
Preprint
Full-text available
Purpose: Routinely assessing quality of life (QoL) of patients with cancer is crucial for improving patient-centred cancer care. However, little is known about whether or how cancer centres assess QoL for clinical practice or for research purposes. Therefore, our study aimed to investigate if QoL data is collected and if so, how and for what purpos...
Article
This cross-sectional study compares rates of subcutaneous and intravenous administration of medications and fluids among patients with cancer in 2 acute palliative care units in the US and Canada.
Article
Full-text available
Opinion statement While the benefits of early palliative care are indisputable, most of the current evidence has emerged from resource-rich settings in urban areas of high-income countries, with an emphasis on solid tumors in outpatient settings; this model of palliative care integration is not currently scalable internationally. A shortage of spec...
Article
While the benefits of early palliative care are indisputable, most of the current evidence has emerged from resource-rich settings in urban areas of high-income countries, with an emphasis on solid tumors in outpatient settings; this model of palliative care integration is not currently scalable internationally. A shortage of specialist palliative...
Article
Objectives Outpatient in-person early palliative care improves quality of life for patients with advanced cancer. The COVID-19 pandemic forced a rapid shift to telehealth visits; however, little is known about how telehealth in outpatient palliative care settings should be optimised beyond the pandemic. We aimed to explore, from the perspective of...
Article
Background: Little is understood of the consequences of restrictive visitor policies that were implemented in hospitals to minimize risk of infection during the COVID-19 pandemic. The objective of this study was to describe physician experiences with these policies and reflections of their effects. Methods: We conducted semistructured phone inte...
Article
LBA492 Purpose: To determine if more patients (pts) with painful liver cancer have improved pain 1 month following radiation therapy (RT), compared to best supportive care (BSC). Methods: This multi-centre, phase III trial randomized pts with painful hepatocellular carcinoma (HCC) or liver metastases (LM) 1:1 to BSC alone or with single fraction RT...
Article
662 Background: Upper abdominal / lower back pain characterizes celiac plexus involvement from pancreatic and other cancers which may impair HRQOL; its satisfactory treatment is an unmet clinical need. We hypothesized that ablative radiation delivered to the celiac plexus would decrease pain and improve HRQOL. Methods: An international single arm P...
Article
Context: Although patients with non-malignant diseases have palliative care needs similar to those of cancer patients, they are less likely to receive specialist palliative care. Referral practices of oncologists, cardiologists, and respirologists could provide insight into reasons for this difference. Objectives: We compared referral practices...
Article
Background: Palliative care (PC) aims to enhance the quality of life for patients and their families when confronted with serious illness. As stroke continues to inflict high morbidity and mortality, the integration of palliative care within acute stroke care remains an important aspect of quality inpatient care. Aim: This study aims to investig...
Preprint
Full-text available
Purpose: Although early palliative care is recommended, resource limitations prevent its routine implementation. We report on the preliminary findings of a mixed methods study involving a randomized controlled trial (RCT) of Symptom screening with Targeted Early Palliative care (STEP) and qualitative interviews. Methods: Adults with advanced solid...
Article
Background: Patients with life-limiting cancers are commonly prescribed opioids to manage pain, dyspnea, and cough. Proper prescription opioid disposal is essential to prevent poisonings and deaths. Objective: We examined opioid disposal practices of patients referred to a Canadian outpatient palliative care clinic (OPCC). The primary objective was...
Article
Full-text available
Purpose: Despite advances in palliative care in Uganda, there has been relatively little recent patient-centered research investigating end-of-life outcomes in this region. We assessed the quality of dying and death of patients with cancer in hospice care in Uganda. Methods: Bereaved caregivers of patients who received hospice care in Uganda and...
Conference Paper
Purpose/Objective(s) Upper abdominal / lower back pain characterizes pancreatic and other upper gastrointestinal malignancies; its satisfactory treatment is an unmet clinical need. We hypothesized that ablative radiation delivered to the celiac plexus would decrease pain. Following promising results from a small pilot study (PMID 35257800), we soug...
Chapter
Since the first edition of The Handbook of Psychiatry in Palliative Medicine was released in 2000, it has come to occupy an important and distinctive niche within the literary anthology of palliative medicine. The Handbook is widely regarded as the definitive reference on psychosocial issues affecting patients with life-threatening and life-limitin...
Article
Full-text available
Background Age-related complex medical conditions have been commonly reported among adolescents and young adults with advanced life-limiting illness. There is increasing interest in exploring their palliative care needs and end-of-life experiences. Aim This scoping review aimed to explore the available literature about providing palliative and end...
Article
Full-text available
Introduction The diagnosis, progression or recurrence of cancer is often highly traumatic for family caregivers (FCs), but systematic assessments of distress and approaches for its prevention and treatment are lacking. Acute leukaemia (AL) is a life-threatening cancer of the blood, which most often presents acutely, requires intensive treatment and...
Article
Full-text available
Background: Oncologists are often concerned that talking about death with patients may hinder their relationship. However, the views of death held by patients have not been thoroughly investigated. This study aimed to describe the perception of death among patients with advanced cancer receiving early palliative care (EPC) and their caregivers. M...
Article
Outpatient palliative care facilitates timely symptom management, psychosocial care and care planning. A growing number of cancer centers have either stand-alone or embedded outpatient palliative care clinics. In this “Controversies in Palliative Care” article, three groups of thought leaders independently answer this question. Specifically, each g...
Article
Full-text available
Background: Family physicians' (FPs) long-term relationships with their oncology patients position them ideally to provide primary palliative care, yet their involvement is variable. We examined perceptions of FP involvement among outpatients receiving palliative care at a cancer center and identified factors associated with this involvement. Met...
Article
Objectives Medical assistance in dying (MAiD) is legal in an increasing number of countries, but there are concerns that its availability may compromise access to palliative care. We assessed public interest in MAiD, palliative care, both, or neither, and examined characteristics associated with this interest. Methods We surveyed a representative...
Article
Full-text available
The role of gender in psychotherapy has been widely recognized but infrequently investigated in psychotherapy trials. We conducted a secondary analysis of data from a randomized controlled trial of Managing Cancer and Living Meaningfully (CALM), a supportive-expressive intervention for individuals with advanced cancer, to examine gender effects in...
Article
Full-text available
Objectives When resources are strained during communicable disease outbreaks, novel palliative care interventions may be required to optimally support people who use substances with life-limiting illnesses. Therefore, we asked the question, ‘what is known about communicable disease outbreaks, palliative care and people who use substances?’, such a...
Article
Full-text available
Introduction Evaluating the quality of dying and death is essential to ensure high-quality end-of-life care. The Quality of Dying and Death (QODD) scale is the best-validated measure of the construct, but many items are not relevant to participants, particularly in low-resource settings. The aim of this multisite cross-sectional study is to develop...
Article
Context : Children and adults with advanced cardiac or respiratory disease may benefit from specialized palliative care (SPC), but there has been little SPC research in this area. Objectives To explore pediatric cardiologists’ and respirologists’ (pediatric clinicians) beliefs about and referral practices to SPC and compare these results to adult...
Article
e24084 Background: To direct limited specialized palliative care resources to patients in greatest need, we developed STEP (Symptom screening with Targeted Early Palliative care). STEP entails symptom screening (ESAS-r) at each oncology clinic visit and triggered alerts (for moderate-high physical and psychological symptoms) to a nurse who calls th...
Article
Early palliative care (EPC) significantly improves quality of life, symptoms, and satisfaction with care for patients with advanced cancer. International organizations have recognized and promoted the role of palliative care as a distinct specialty, advocating its involvement throughout the cancer trajectory. Although patients with haematologic mal...
Article
TPS7072 Background: Acute leukemia (AL) is characterized by rapid symptom onset requiring urgent hospitalization and initiation of intensive treatment with high mortality. Despite this, there is scant research on its psychological and physical impacts and even less on interventions to alleviate them [Bryant 2016]. We conducted a longitudinal study...
Article
Outcomes 1. Determine the current methods of information transfer for inpatient admissions in palliative care units 2. Identify what is considered relevant information to provide clinical care from the perspective of palliative care physicians from an acute palliative care unit 3. Reflect in their current transfer of information and strategic point...
Article
Full-text available
Despite high-level evidence demonstrating the benefits of integrating palliative care early in the trajectory of advanced cancer, there remains a stigma surrounding this important discipline. This stigma is rooted in the origins of palliative care as care for the dying and is propagated by misinformation and late referrals to palliative care servic...
Article
Full-text available
Background: Palliative care is well suited to support patients hospitalized with COVID-19, but integration into care has been variable and generally poor. Aim: To understand barriers and facilitators of palliative care integration for hospitalized patients with COVID-19. Methods: Internists, Intensivists and palliative care physicians complete...
Article
Full-text available
Introduction: Pancreatic cancer is characterised by severe mid-back and epigastric pain caused by tumour invasion of the coeliac nerve plexus. This pain is often poorly managed with standard treatments. This clinical trial investigates a novel approach in which high-dose radiation (radiosurgery) is targeted to the retroperitoneal coeliac plexus ne...
Article
Objectives The Clinical Evaluation Questionnaire (CEQ) is a patient-reported experience measure (PREM) that assesses the perceived benefit of therapeutic interactions of patients with advanced cancer with their healthcare providers concerning issues relevant to their illness. It was developed for a randomised controlled trial of Managing Cancer and...
Article
Full-text available
Background: Early palliative care (EPC) improves the quality of life but may not be feasible for all patients with advanced cancer. Symptom screening has been suggested to triage patients for EPC, but scant evidence exists for this practice. Methods: We conducted a subgroup analysis of a cluster-randomized controlled trial of EPC vs. standard on...
Article
Full-text available
Background Oncologists’ fear of taking away hope from patients when proposing early palliative care (EPC) is a barrier to the implementation of this model. This study explores hope perceptions among bereaved caregivers of onco-hematologic patients who received EPC. Materials and Methods Open-ended questionnaires were administered to 36 primary car...
Article
Despite all advances in the treatment of neoplasms and substantial increases in five- year survival rates, most patients still die due to their diseases. Late diagnosis in some circumstances and resistance mechanisms throughout treatment still cause most patients to require palliative care integrated with cancer treatment, since diagnosis. Most pal...
Article
Full-text available
PurposeWe investigated relationships between domains of quality of dying and death in patients with advanced cancer and their caregivers’ bereavement outcomes and the moderating effect of patient age at death.Methods Bereaved caregivers of deceased patients with advanced cancer who had participated in an early palliative care trial completed measur...
Article
Full-text available
Background: Several novel targeted therapies seem to improve the outcome of acute myeloid leukemia (AML) patients. Nonetheless, the 5-year survival rate remains below 40%, and the trajectory of the disease remains physically and emotionally challenging, with little time to make relevant decisions. For patients with advanced solid tumors, the integ...
Article
Death anxiety is common in advanced cancer due to heightened mortality salience. We tested terror management theory (TMT) in this population (N = 305) by evaluating the buffering effect of the distal defenses (attachment security, meaning, self-esteem) on the impact of physical impairment (a proxy for mortality salience) on death anxiety. Patients...
Article
Objectives Patients with chronic respiratory disease have significant palliative care needs, but low utilisation of specialist palliative care (SPC) services. Decreased access to SPC results in unmet palliative care needs among this patient population. We sought to determine the referral practices to SPC among respirologists in Canada. Methods Res...
Article
Full-text available
Introduction Canadians have had legal access to medical assistance in dying (MAiD) since 2016. However, despite substantial overlap in populations who request MAiD and who require palliative care (PC) services, policies and recommended practices regarding the optimal relationship between MAiD and PC services are not well developed. Multiple models...
Article
Objectives Patients who do not attend outpatient palliative care clinic appointments (‘no-shows’) may have unmet needs and can impact wait times. We aimed to describe the characteristics and outcomes associated with no-shows. Methods We retrospectively reviewed new no-show referrals to the Princess Margaret Cancer Centre Oncology Palliative Care C...
Article
Full-text available
Objective: WHO recommends early integration of palliative care alongside usual care to improve quality of life, although misunderstanding of palliative care may impede this. We compared the public's perceived and actual knowledge of palliative care, and examined the relationship of this knowledge to attitudes concerning palliative care. Methods:...
Article
Full-text available
Introduction Communicable disease epidemics and pandemics magnify the health inequities experienced by marginalised populations. People who use substances suffer from high rates of morbidity and mortality and should be a priority to receive palliative care, yet they encounter many barriers to palliative care access. Given the pre-existing inequitie...
Article
Full-text available
Background: Little is known about underlying mechanisms through which early palliative care (EPC) improves multiple outcomes in cancer patients and their caregivers. The aims of this study were to qualitatively and quantitatively analyze patients' and caregivers' thoughts, emotional and cognitive perceptions about the disease prior and during the...
Article
Background: Routine early palliative care (EPC) improves quality of life (QoL) for patients with advanced cancer, but it may not be necessary for all patients. We assessed the feasibility of Symptom screening with Targeted Early Palliative care (STEP) in a phase II trial. Methods: Patients with advanced cancer were recruited from medical oncolog...
Chapter
The benefits of early, integrated palliative care have been demonstrated through several randomized controlled trials. These benefits include improved quality of life, satisfaction with care, symptom management, and, in some cases, survival. Despite heterogeneity in study design and execution, as well as limitation to mainly the oncology population...
Article
Full-text available
Objectives Despite the escalating public health emergency related to opioid-related deaths in Canada and the USA, opioids are essential for palliative care (PC) symptom management. Opioid safety is the prevention, identification and management of opioid-related harms. The Delphi technique was used to develop expert consensus recommendations about h...
Article
Full-text available
Background The legal criteria for medical assistance in dying (MAiD) for adults with a grievous and irremediable medical condition were established in Canada in 2016. There has been concern that potentially reversible states of depression or demoralization may contribute to the desire for death (DD) and requests for MAiD. However, little is known a...
Article
Full-text available
Epithelioid hemangioendothelioma (EHE) is an ultra-rare, translocated, vascular sarcoma. EHE clinical behavior is variable, ranging from that of a low-grade malignancy to that of a high-grade sarcoma and it is marked by a high propensity for systemic involvement. No active systemic agents are currently approved specifically for EHE, which is typica...
Article
Full-text available
Background Screening for problematic opioid use is increasingly recommended in patients receiving palliative care. Aim To identify tools used to assess for the presence or risk of problematic opioid use in palliative care. Design Scoping review. Data sources Bibliographic databases (inception to January 31, 2020), reference lists, and grey liter...
Article
Full-text available
COVID-19 was first reported in Wuhan, China, in December 2019; it rapidly spread around the world and was declared a global pandemic by the World Health Organization in March 2020. The palliative care program at the Princess Margaret Cancer Centre, Toronto, Canada, provides comprehensive care to patients with advanced cancer and their families, thr...
Article
Full-text available
Opinion statement Evidence from randomized controlled trials and meta-analyses has shown that early integration of specialized palliative care improves symptoms and quality of life for patients with advanced cancer. There are various models of early integration, which may be classified based on setting of care and method of palliative care referral...
Article
Full-text available
Background To date, little is known about the characteristics of patients who are admitted to a palliative care bed for end-of-life care. Previous data suggest that there are disparities in access to palliative care services based on age, sex, diagnosis, and socioeconomic status, but it is unclear whether these differences impact access to a pallia...
Article
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Background During the COVID-19 pandemic, hospitals worldwide have reported large volumes of patients with refractory symptoms and a large number of deaths attributable to COVID-19. This has led to an increase in the demand for palliative care beyond what can be provided by most existing programs. We developed a scalable model to enable continued pr...
Article
Full-text available
Background: Progress in palliative care (PC) requires scientific advances which could potentially be catalyzed by international research collaboration (IRC). It is currently not known how often IRC occurs with PC investigators in South America. Objectives: To evaluate the percentage of South America journal articles on PC involving IRCs and the...
Article
Objectives International medical graduates (IMGs) who pursue additional training in another country may encounter unique challenges that compromise their learning experience. This paper describes the development of an Online Bridging Program in the Division of Palliative Care at the University Health Network Toronto and examines its effectiveness i...
Article
Full-text available
Pain is highly prevalent in patients with cancer-nearly 40% report moderate-severe pain, which is commonly treated with opioids. Increasing cancer survivorship, opioid epidemics in some regions of the world, and limited opioid access in other regions have focused attention on nonopioid treatments. Given the limitations of monotherapy, combining non...
Article
Objective Early palliative care (EPC) in the outpatient setting improves quality of life for patients with advanced cancer, but its impact on quality of dying and death (QODD) and on quality of life at the end of life (QOL-EOL) has not been examined. Our study investigated the impact of EPC on patients’ QODD and QOL-EOL and the moderating role of r...
Article
Full-text available
Understanding the symptom burden trajectory for metastatic breast cancer patients can enable the provision of appropriate supportive care for symptom management. The aim of this study was to describe the longitudinal trajectories of symptom burden for metastatic breast cancer patients at the population-level. A cohort of 995 metastatic breast cance...
Article
Full-text available
Clinical guidelines aimed at cancer care for adolescents and young adults (AYAs) encourage early integration of palliative care, yet there are scarce data to support these recommendations. We conducted a retrospective chart review of AYA patients, aged 15 to 39 years, who were referred to the Integrated AYA Palliative Care and Psychiatry Clinic (IA...
Article
Coronavirus disease 2019 (COVID-19) first emerged in China in December 2019 and was declared a pandemic by the World Health Organization on March 11th, 2020. Clinicians around the world looked to cities that first experienced major surges to inform their preparations to prevent and manage the impact the pandemic would bring to their patients and he...
Article
Background Hospital-to-home transitions, particularly at the end of life, can be challenging for patients and their family caregivers. Therefore, there is a need to better understand gaps in expectations and experiences of these transitions. Theory can inform the creation of an intervention aimed at improving the hospital-to-home transition. Aim (...
Article
Objective In a cluster-randomised controlled trial of early palliative care (EPC) in advanced cancer, EPC was robustly associated with increased patient satisfaction with care. The present study evaluated mediational mechanisms underlying this EPC effect, including improved physical and psychological symptoms and quality of life, as well as relatio...
Article
Background Distress about dying and death is an important clinical and research outcome in advanced cancer. A 15‐item Death and Dying Distress Scale (DADDS) measure has undergone preliminary validation, but full validation in a large sample has not previously been reported. We investigated its psychometric characteristics and responsiveness to a th...
Article
Background: Evidence from randomized controlled trials has demonstrated benefits in quality of life outcomes from early palliative care concurrent with standard oncology care in patients with advanced cancer. We hypothesized that there would be earlier referral to outpatient palliative care at a comprehensive cancer center following this evidence....
Article
Full-text available
Background Patients with heart failure have palliative care needs that can be effectively addressed by specialist palliative care (SPC). Despite this, SPC utilization by this patient population is low, suggesting barriers to SPC referral. We sought to determine the referral practices of cardiologists to SPC. Methods Cardiologists across Canada wer...