https://orcid.org/0000-0001-5250-6650
Figures
Abstract
Introduction
Cardiovascular disease (CVD) remains the leading cause of death globally, and numerous patients undergoing cardiovascular surgery rely heavily on informal care partners, often spouses or close family members for support. While much of the existing literature focuses on caregiver burden, particularly in dementia-related conditions, less is known about the specific factors influencing the quality of life (QoL) of care partners in the context of surgical cardiovascular interventions.
Methods
This qualitative study was conducted at a tertiary cardiac center to identify the key factors that influence the QoL of care partners of patients who have undergone or are undergoing cardiovascular surgery. Twenty care partners of cardiac or vascular patients participated in semi-structured interviews. Interviews explored emotional, physical, financial, and social dimensions of the care partner’s experience. Thematic analysis was used to identify recurrent factors influencing care partner QoL.
Results
Participants were predominantly female (80%) and most often spouses of the patients (55%). Thematic analysis revealed several interrelated domains affecting care partner QoL: financial stress (e.g., lost income, travel costs), emotional impact, communication with healthcare teams, care partner physical health limitations, and availability of social support. Patient-related factors such as the type and urgency of surgery, post-operative condition, and patient attitude also significantly influenced care partner experiences. These findings highlight the multifaceted nature of care partner QoL and its direct connection to patient outcomes.
Conclusions
This study identifies core factors that impact the well-being of care partners of cardiovascular patients and emphasizes the importance of their role in supporting recovery. The results provide a framework for identifying at risk care partners for poor patient outcomes, and consideration of early intervention and tailored support. Integrating care partner needs into healthcare planning may improve both patient and care partner outcomes in cardiovascular surgical care settings.
Citation: Mirzadeh P, Horlick EM, Ouzounian M, Osten M, Witheford M, Styra R (2026) Determinants of the quality of life of care partners in the context of surgical cardiovascular interventions: A qualitative study. PLoS One 21(1): e0341568. https://doi.org/10.1371/journal.pone.0341568
Editor: Antony Bayer, Cardiff University, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
Received: September 24, 2025; Accepted: January 8, 2026; Published: January 27, 2026
Copyright: © 2026 Mirzadeh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Data Availability: Data from this study involves human participant qualitative interview content, which cannot be publicly shared due to ethical and legal restrictions intended to protect participant privacy and confidentiality. Although there are no direct identifiers, the narrative and context-rich nature of qualitative data may create a risk of participant de-identification. Therefore, the academic institution where this data was conducted has restrictions on the data. University Health Network, which is an academic institution, affiliated with the University of Toronto, is the owner of this data, and they retain a data repository and provide an arms-length data access committee, which reviews all requests to ensure that secondary use complies with ethical and privacy requirements. Requests for data access should be directed to this committee with fulfillment of legal and ethical requirements including assuring institution of REB approval for the proposed study and entering into a legal agreement with the institution. To begin the formal data request process, individuals can contact Carl.Virtanen@uhnresearch.ca.
Funding: The author(s) received no specific funding for this work.
Competing interests: The authors have declared that no competing interests exist.
Introduction
Cardiovascular disease (CVD) is the leading cause of death globally [1], affecting nearly half the adult population [2]. A broad range of cardiovascular surgery is available, varying significantly in terms of invasiveness, risk of complications, surgery duration, and post operative care requirements. Individuals living with CVD often rely on informal care givers, now more commonly referred to as “care partners”, to support their treatment course and self-care [3].
Care partners provide essential, informal assistance to individuals with a health condition, which may or may not involve direct physical care, and often participate in the patients’ health-related discussions [4]. In the context of CVD interventions, care partners play a critical role before, during, and after treatment, making their involvement and contribution a key factor to consider in patient care. This issue affects a substantial portion of the patient population. For instance, in 2018, Statistics Canada reported 7.8 million individuals aged 15 or older provided care to a family member or friend living with a chronic health condition [5]. Similarly, in 2020, 53 million American adults were informal caregivers [6]. Care partners play an important role in reducing the burden on the healthcare system as they may reduce the need for hospitalization, formal caregivers, and potential admission to a long-term care facility, to name a few. Further, it is estimated that the annual savings to the American healthcare system is approximately $350 billion [7].
The level and nature of care required varies depending on the patient’s condition and symptom severity. While much of the literature has focused on caregiver burden [8–10], especially in dementia or Alzheimer’s disease, fewer studies have addressed caregiving in the cardiovascular context, and there is limited knowledge regarding care partner burden associated with cardiovascular surgery. A survey of 585 informal caregivers for patients with atrial fibrillation in the United Kingdom, Italy, and Germany was conducted and found that the average amount of time providing care per week varied (33 ± 29 hours) [11]. Further, this study found that comorbidities such as diabetes and respiratory diseases significantly contributed to time and burden [11]. While caregivers dedicate many hours to informal care of patients, many also reported fulfillment in their role [11,12]. Additionally, a meta-analysis of heart failure patients demonstrated that increased caregiver stress was significantly associated with poorer patient outcomes, including greater symptom severity, reduced patient quality of life (QoL), and increased clinical events [13].
Despite a growing body of research on caregiver burden, there remains a limited understanding of the specific factors that influence the QoL of care partners of individuals undergoing or having undergone cardiovascular surgery. QoL is a multidimensional concept that reflects the overall well-being of an individual at a point in time, encompassing both negative and positive aspects of their experience [14]. The many dimensions of QoL include physical, mental, and spiritual health, relationships, wealth, work, security, autonomy, social belonging, and physical environment, to name a few [14]. This study seeks to address this gap in the literature by identifying key determinants that impact the QoL of care partners supporting patients with CVD requiring surgical intervention. This work aims to provide an initial evidence base to identify key areas of challenges for care partners and inform the development of targeted supports specific to care partners who are supporting patients with CVD requiring surgical intervention.
Methods
Study design and population
This study utilized semi-structured interviews with 20 care partners at a tertiary cardiac care centre. Eligible participants for this study included care partners of patients that have undergone or were in hospital scheduled to undergo cardiovascular surgery. For the purpose of this study, care partners were defined as informal participants (e.g., family members, friends) who were not merely related or acquainted but actively involved in the patients care. For example, assisting the patient with activities of daily living, accompanying the patient to medical appointments, helping in the management of the patient’s medications, or providing ongoing emotional support, to name a few. The inclusion criteria consisted of the following: 1) at least 18 years of age, 2) care partners of patients who are hospitalized and require or have undergone cardiovascular surgery, and 3) care partner is English speaking. Participants were ineligible to participate if they were: 1) care partners with cognitive impairment, or 2) paid caregivers.
Recruitment and data collection
Participant recruitment took place between August 11, 2023 to September 20, 2024 in the Peter Munk Cardiac Centre, University Health Network (Toronto, Canada). Potential care partners were identified during visiting hours by members of the patient’s circle of care (often nurses). Once identified, a member of the patient’s circle of care asked the care partner whether they would agree to being contacted by a member of the research team at University Health Network. For care partners who agreed, a member of the research team approached them in person to explain the study and obtain written informed consent. Potential participants were given as much time as needed to ask questions about the study and to read the consent form prior to signing. All interviews were conducted immediately following informed consent. Participants who consented to participate were taken to a meeting/conference room in the same unit at the hospital for privacy, where the interview was conducted.
A summer research student and a study author (PM) obtained consent and conducted the interviews. The semi-structured interview guide, developed by the research team, (S1 File) was used to facilitate the discussion. The guide began with a standardized introduction and definitions of key terms such as “quality of life” and “care partner” to ensure shared understanding. Participants were asked to describe their relationship to the patient, including relevant context such as the patient’s surgery and their overall involvement. The interview then progressed to broader questions exploring factors influencing the care partners’ QoL, including aspects of their mental and physical health. At the conclusion of the interview, the participants were given an opportunity to share any additional insights or experiences they felt are important for the research team to understand but may not have been addressed in the preceding questions. Given the semi-structured nature of the interviews, flexibility was maintained to allow for deviations from the general guide. This approach enables the interview to accommodate the flow of the conversation, explore emerging themes, and gain a deeper contextual understanding of participant responses. Overall, the interviews ranged from approximately twenty to sixty minutes in length.
Data analysis
Demographic variables are summarized using descriptive statistics (frequency and percentage). Qualitative data is captured through the semi-structured interviews; therefore, thematic analyses [15] were conducted to analyze the interview responses. Two of the authors (PM and RS) independently reviewed the full documents consisting of interview answers, and identified key statements related to participants’ perceptions of QoL. Each reviewer individually coded the relevant statements, focusing on those that provided insight into factors influencing care partner QoL. The reviewers then met to compare and reflect on the key statements they identified, coding them by hand to collaboratively finalize the coding framework through consensus. This process yielded key factors affecting QoL of care partners, as well as patient-dependent factors affecting the QoL of care partners. The reviewers then revisited the transcripts to extract illustrative quotes supporting the emerging themes. The data analysis process took several meetings to discuss themes and review text, ensuring methodological rigor and integrity. Due to the study design and qualitative nature of the data, we recruited 20 participants. Although thematic saturation is commonly achieved with 12–13 participants [16], a larger sample size was obtained for robustness and thematic depth.
All study data were stored in password-protected Google Docs and Google Sheets, shared between two study authors (PM and RS) and a summer research student. Data will be deleted 10 years following the beginning of recruitment, in accordance with the institutional Research Ethics Board requirements. Interviews were not audio recorded; instead, detailed notes capturing participants responses as verbatim as possible were typed in real time during the interview. Where needed, participants were asked to repeat their sentences, to ensure completeness. No personal identifiers such as participant names or initials were collected during the interviews; therefore, quotes are presented without codes, preserving confidentiality in this small sample.
Results
Care partner and patient characteristics are shown in Table 1. Overall, 20 care partners were interviewed in this study, 80% were female, and 20% were male. Just over half (55%) were the patient’s spouse or partner, while the remaining were the patient’s children (30%), parent (5%), sibling (5%), or grandchildren (5%). Within their roles, the level of care varied, as some care partners reported only needing to attend appointments with the patients, and others reported needing to help the patient with activities of daily living. During interviews, care partners described their roles, many emphasized that accompanying patients to medical appointments and seeking clarification or additional information from healthcare providers constituted a significant part of their role.
Key factors influencing the QoL of cardiovascular patients’ care partners are listed in Table 2, along with illustrative examples. Commonly reported challenges included financial stress due to taking time off from work and incurring costs associated with travel, parking, food, and hotel room as some care partners lived a distance from the hospital. The emotional burden associated with their roles was a significant theme, as were issues related to communication with the healthcare team (i.e., clarity of information, tone of interactions with healthcare team), the care partner’s own physical health, and the availability of supports from family and friends. Care partners valued proactive explanations from the healthcare team, which reduced the need for care partners to search for information independently. They also communicated that a cheerful bedside manner positively affected them. Many care partners reported being unable to prioritize their own health needs and frequently forgoing previously enjoyed activities, as the demands of their role occupied the majority of their time (e.g., no longer playing a sport they enjoy because they now spend time taking care of the patient). Overall, there is duality to the key factors related to the quality of life of care partners. These factors may be positive or negative, depending on the individual experience, as shown in Table 2. For example, for the key factor of physical health, while a care partner indicated no longer drinking alcohol (positive effect), another stated no longer being able to play a sport they enjoy (negative consequence).
Patient-dependent factors related to the QoL of cardiovascular patients’ care partners are described in Table 3. Patient-dependent factors included surgery, with more invasive surgeries contributing to higher levels of stress; patient well-being, as care partners report better quality of life when patients were doing better; and patient attitude, where positive attitudes of patients positively affect the care partners emotional well-being.
While key factors affecting care partner QoL are displayed separately, Fig 1 illustrates the dynamic interplay among them. Emotional distress was shaped by the complexity of their caregiving responsibilities and roles, the effectiveness and quality of communication with both the patient and the healthcare team, and the perceived availability and adequacy of support from family and social networks. Physical health was affected by reduced opportunities for physical activity, or pursuit of their own medical care, with several care partners reporting a decline in their own well-being. Financial stress was heightened by travelling for the surgery and often taking time off work to be there for the patient. Patient related factors shown in this figure include the surgery which is affected by both the urgency of the surgery and the duration of hospitalization, which contributed to emotional and financial strain. More complex or prolonged surgery, often required extended caregiver involvement and time off work, further contributing to overall strain. The patient’s well-being, including the clinical outcome of the surgery and level of dependency by the patient further influenced the care partner’s emotional and physical health. Finally, patient attitude encompassed the level of motivation displayed, which played a significant role in influencing the emotional distress of their care partner.
Created in BioRender. Mirzadeh, P. (2026) https://BioRender.com/5yc52kc.
Discussion
This study contributes to the literature by exploring the determinants influencing the overall well-being of care partners supporting hospitalized patients who have undergone or are undergoing cardiovascular surgery. In this study, key factors of care partner overall well-being impacting quality of life were identified, including financial stress, emotional impact, communication, physical health, and the availability of supports. In addition, patient-related factors, including surgery, the patient’s well-being, and patient attitudes were identified to significantly shape the care partner’s experience. In some cases, few of the themes displayed duality, where both positive and negative effects were noted.
The predominance of female care partners in this study is consistent with longstanding evidence that women are more likely to assume caregiving responsibilities across the lifespan. Women are disproportionately represented among those providing care for both children and dependent adults and are more likely to report associated psychological burdens, including fatigue, anxiety, and emotional distress [17]. This gendered caregiving pattern is particularly salient in the context of CVD, which has a higher prevalence and surgical intervention rate among men [18]. As such, it is not surprising that the majority of care partners in this study were women providing care to spouses or partners recovering from CVD-related events.
Care partner burden has been associated with increased rates of rehospitalization and poorer health outcomes among older adults [19,20]. In our cohort, care partners emphasized the importance of receiving support themselves while simultaneously providing care to the patient. Given the majority of care partners in this population are female, they may be more at risk to experiencing inadequate family support compared to their male counterparts. This lack of support is a recognized predictor of adverse health outcomes for the care partner [21]. As such, it is essential that healthcare systems and providers identify strategies to reduce the burden experienced by care partners during various healthcare interactions. The development and implementation of support measures must account for gender-specific differences, recognizing that female care partners may face distinct challenges and experiences relative to their male counterparts.
Psychological distress, including depression and anxiety, in care partners has been found to exceed levels observed in both the general population and the patients they support [22,23]. Pre-surgical anxiety in care partners of patients undergoing coronary artery bypass grafting (CABG) has been associated with elevated post-surgical cortisol levels [24], a marker of elevated stress which may impact the effective provision of care by the care partner. Increased levels of psychological distress in the care partner also produce undesirable psychological and behavioral consequences for the patient such as symptoms of anxiety and depression, and poor self-care which, in turn, contribute to increased hospitalization [25]. For patients with heart failure, care partner preparedness has been shown to significantly impact levels of care partner depression, which in turn affects both their physical and mental quality of life [26]. This finding underscores the importance of intervening early in the course of the patient and care partner’s journey undergoing cardiovascular surgery.
Care partners have a direct impact on patient outcomes, making their needs an important consideration in healthcare planning and policy. Support interventions should be tailored to the level of distress experienced. These may range from simple validation and acknowledgment of their burden to structured support groups where care partners can share experiences and access resources. For those experiencing significant emotional distress, it may be necessary to provide more specialized psychological support (e.g., structured conversations with healthcare professionals such as psychologists or psychotherapists), or financial support (e.g., consultation with social services to assist with financial organizations, and access to resources).
While this study has many strengths, including a unique sample of care partners and rich qualitative data identifying key factors influencing care partner well-being, there are some limitations which warrant mention. Experiences of care partners in this study are not generalizable to all care partners, as participants were specifically caring for patients who had undergone or were undergoing cardiovascular surgery. Further, limited demographic information was collected from care partners, including their age, socioeconomic status, social support networks, and health literacy which may have an influence on their experiences, and in turn their responses. For example, those of a lower socioeconomic status may experience greater financial burden and therefore a greater level of stress, or those with a social support network may experience less overall burden in caring for the patient. Furthermore, detailed data about the patient’s specific surgery was not collected. This may serve as a limitation as there is great variability in the invasiveness of different cardiovascular surgeries. Despite these limitations, results from this study serve as a foundational step in a better understanding of the impact of cardiovascular surgery on the care partner and provides a basis for consideration of methods for early identification of the care partner as well as interventions.
Findings from this study underscore the vital role of care partners in supporting the recovery process. Enhancing awareness of care partner needs in this population and incorporating these needs into healthcare planning may contribute to improved outcomes for both patients and care partners within cardiovascular care settings. Thus, future research should explore strategies for incorporating care partner supports into clinical practice, directly addressing care partner needs. These may include psychosocial support, targeted education, and/or financial resources which may directly target needs identified in this study. Future works should examine how addressing these needs and incorporating such supports may have long-term impact on both care partner and patient health outcomes, which can further reduce burden on the healthcare system.
Conclusion
This study contributes novel insights to the existing literature by identifying factors that influence the QoL of care partners supporting hospitalized patients who have undergone or are undergoing cardiovascular surgery. Financial stress, emotional impact from their sense of responsibility, communication with the patient and healthcare team, care partner physical health, and level of support were the key factors affecting the QoL of care partners in this study. Furthermore, the surgery, well-being of the patient, and the patients’ attitude were patient-dependent factors which influenced the QoL of care partners. Further research is needed to further examine these factors in diverse settings with more demographic information, and to explore strategies for incorporating care partner needs in practice.
Acknowledgments
The authors express their gratitude to the individuals who participated in this study for their time and willingness to share their experiences and perspectives, making this research possible. The authors also extend their appreciation to Lucy Guan for their invaluable help in participant recruitment and the interview process.
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