Stress and Percutaneous Coronary Intervention Outcomes – A Holistic Approach to Heart–Brain Connection

Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide with an estimated prevalence of 315 million patients in 2022.[1] Since the advent of percutaneous coronary intervention (PCI) in 1977 by Dr. Andreas Gruentzig, clinical outcomes and symptom management for CAD have improved dramatically. However, an essential aspect of CAD management that warrants greater attention is the psychological well-being of patients undergoing PCI. As traditional CAD treatments have advanced, focusing on holistic patient care to enhance overall outcomes has become increasingly relevant. The pre- and postprocedural periods are often fraught with anxiety, which can significantly impact recovery, patient outcomes, and overall health. The prevalence of anxiety in patients undergoing PCI can range from 9% to 72%, and the psychological stress associated with these procedures can impede recovery.[2,3] Perioperative anxiety has been consistently linked to increased postoperative pain, which may lead to prolonged recovery times and extended hospital stays. While the role of exercise in alleviating anxiety and depression in CAD patients is well-established, recent studies have highlighted the potential benefits of incorporating mindfulness-based stress reduction and breathing therapy to address anxiety in patients undergoing PCI.[4-6] In a recent study by Yang Y et al.,[7] 160 patients undergoing PCI were randomly assigned to either an intervention group or a control group, each consisting of 80 patients. The intervention group received meditation, breathing therapies, and psychological counseling starting 6 h before PCI, whereas the control group did not receive these interventions. The study assessed anxiety and sleep quality using the Zung Self-Rating Anxiety Scale and the Pittsburgh Sleep Quality Index, respectively, and monitored blood pressure, heart rate, and serious adverse events (SAEs) over a 3-month follow-up period. The findings indicated that the intervention group experienced significantly lower anxiety, improved sleep quality, and reductions in both systolic and diastolic blood pressures and heart rates. In addition, this group had shorter PCI durations, reduced use of anti-anxiety medication, shorter hospital stays, and fewer SAEs, including reduced rates of arrhythmias, recurrent interventions, worsening heart failure, and recurrent angina pectoris compared to the control group. Pathophysiologic mechanisms of effect of meditation and breathing therapies prior to PCI on cardiac events 3 months post-PCI need to be better understood. Although the study demonstrated promising results, it is important to note that it was nonblinded, which could introduce bias. Furthermore, patient counseling should ideally be a standard component of any operative intervention to optimize outcomes. In addition, the administration of anxiolytics and sedation was measured in a binary manner rather than total administered dose. Despite these promising findings, there remains a gap between research and clinical practice. The integration of meditation and breathing therapy into routine care requires further validation through large-scale, controlled studies. Integrating these therapies into standard care protocols could have profound implications. This reduction in anxiety can improve patient adherence to treatment regimens, enhance recovery experiences, and potentially lead to better long-term outcomes. Furthermore, training and education for healthcare professionals on the benefits and techniques of mind–body interventions could foster a more holistic approach to cardiac care. By embracing these nonpharmacological methods, clinicians can enhance patient care by addressing both physical and psychological components of health. While behavioral therapies may have limited immediate applications in acute settings, their long-term impact during cardiac rehabilitation post-PCI could be significant. Incorporating mindfulness exercises and psychological counseling into these programs could support lasting behavioral changes and improve overall patient outcomes. This could also lead to long-term economic benefits by reducing the burden on healthcare systems due to fewer adverse events and lower rates of hospital readmission, although this has yet to be formally evaluated. Cost-effective studies of meditation and breathing therapies before PCI need to be done to incorporate them into daily practice. However, in general, there is good evidence on cost-effectiveness of meditation on cardiovascular risk reduction.[8] In summary, the integration of meditation and breathing therapy into the care of CAD patients undergoing PCI represents a promising avenue for improving patient outcomes. As the field of cardiovascular medicine continues to evolve, incorporating a more comprehensive approach that includes psychological well-being could offer substantial benefits. Future research and clinical practice should focus on cardio-psychological prong, thereby ultimately leading to more effective and patient-centered care strategies. Author contributions The literature search and first draft of manuscript was completed by Sandeep Randhawa. Subsequently, the manuscript was edited and reviewed by Subodh Devabhaktuni and Sandeep Randhawa. Both authors have given final approval for the current version to be published.