Breathing control training as a treatment for functional seizures (BREATHS trial): a multicentre, assessor-blinded, randomised controlled efficacy and acceptability trial study protocol

by myneuronews

Study Overview

This trial, designed to assess the efficacy and acceptability of breathing control training for individuals experiencing functional seizures, represents a multicenter, assessor-blinded, and randomized controlled approach. Functional seizures, often misunderstood and misdiagnosed, occur without physiological triggers and can significantly impact a person’s quality of life. The current study aims to address this gap in treatment options by specifically evaluating a non-pharmacological intervention that focuses on respiratory techniques.

The BREATHS trial will involve multiple centers, enhancing the generalizability of the findings across diverse patient populations. A key feature of this study is its assessor-blinded design, ensuring that the individuals evaluating the outcomes remain unaware of the treatment allocations, which minimizes bias and increases the reliability of the results. Randomization will play a crucial role in assigning participants to either the intervention group, which will undergo structured breathing control training, or a control group that receives standard care or a placebo intervention.

Participants will be recruited based on specific diagnostic criteria for functional seizures, ensuring a homogenous group for comparison. The primary outcome measures will include changes in the frequency of seizure episodes, as well as assessments of participants’ overall well-being and acceptability of the treatment. Secondary outcomes may explore additional therapeutic benefits, such as anxiety reduction and enhanced coping strategies. By focusing on respiratory regulation, the trial seeks to uncover a viable therapeutic pathway that could improve quality of life for individuals grappling with this often debilitating condition.

The significance of this study lies not only in its potential to validate breathing control as an effective treatment modality but also in its contribution to the broader understanding of functional seizures within the medical community. The innovative approach taken by this trial may pave the way for future research into other non-invasive therapies for similar conditions, ultimately fostering more comprehensive care options for affected individuals.

Methodology

The BREATHS trial will be conducted using a structured framework aimed at rigorously evaluating the effectiveness of breathing control training for the treatment of functional seizures. A multicenter design allows for a variety of clinical environments, thereby increasing the diversity of the participant pool and the applicability of the findings to a wider population.

Participants will be selected based on strict diagnostic criteria aligned with the definitions of functional seizures as outlined in the DSM-5, ensuring that only individuals with a confirmed diagnosis are included. This is crucial for eliminating confounding variables and maintaining a uniform baseline across the study cohort. Recruitment will occur across various specialized clinics, and informed consent will be obtained prior to participation.

In terms of study design, participants will be randomly assigned to either the intervention group, which will partake in a series of structured sessions focusing on breathing techniques, or to the control group, which will continue receiving standard therapeutic care without any additional interventions. Randomization will employ computer-generated random numbers to ensure impartial assignment, thereby reducing selection bias.

The intervention regimen will consist of multiple sessions led by trained facilitators, emphasizing different breathing control techniques such as diaphragmatic breathing, paced breathing, and other practices aimed at promoting physiological relaxation responses. Each session’s content will be standardized while allowing for some adaptability to accommodate individual participant needs and progress.

Outcome measures will be assessed at baseline, during the intervention, and at follow-up intervals to track changes over time. The primary outcome is the frequency of functional seizure episodes, quantified through a self-reported seizure diary maintained by participants along with corroborative data from medical records, if available. This multi-source approach ensures greater accuracy in reporting.

In addition to seizure frequency, secondary outcomes will encompass a range of psychological well-being indicators. These may include standardized questionnaires designed to measure anxiety, depression, and quality of life assessments. Participants’ experiences and satisfaction with the breathing training will also be evaluated through qualitative interviews and validated scales aimed at gauging acceptability and perceived benefit.

Statistical analyses will be conducted to compare outcome measures between the intervention and control groups, employing techniques such as intention-to-treat analysis to account for any dropouts or missed assessments. Outcomes will be reported in terms of effect sizes, confidence intervals, and p-values to determine statistical significance. Additionally, qualitative feedback from participants will be thematically analyzed to identify common trends, barriers, and facilitators affecting the intervention’s acceptability.

This robust methodology not only enhances the study’s scientific validity but also ensures that findings will be relevant to clinical practice, potentially leading to improved treatment paradigms for individuals living with functional seizures.

Key Findings

The findings from the BREATHS trial are anticipated to provide substantial insights into the role of breathing control training as a therapeutic intervention for individuals experiencing functional seizures. Initial data collection will focus on the primary outcome of seizure frequency, where it is expected that participants undergoing breathing control training will report a significant reduction in the number of seizure episodes compared to the control group. This reduction is hypothesized to demonstrate the effectiveness of breathing techniques in modulating physiological responses associated with functional seizures.

Furthermore, secondary outcomes will likely reveal important benefits related to mental health and overall quality of life. Participants in the intervention group are expected to show noteworthy improvements in anxiety and depression scores, as assessed by validated psychological instruments. These instruments may include the Generalized Anxiety Disorder 7-item (GAD-7) scale and the Patient Health Questionnaire-9 (PHQ-9), which are widely recognized for their reliability in evaluating mental health conditions. An increase in self-reported quality of life metrics is also anticipated, suggesting that the adoption of breathing techniques not only influences seizure activity but also enhances the individuals’ overall sense of well-being.

Data regarding the acceptability of the intervention will be critically analyzed through qualitative feedback from participants, providing a deeper understanding of their experiences with breathing control training. Expectation is that patients will express positive feedback regarding the feasibility and appeal of incorporating such techniques into their daily routine. This might manifest in high satisfaction rates, indicating that breathing control is not only effective but also a welcomed addition to their treatment repertoire.

Moreover, the thematic analysis of qualitative interviews is expected to uncover both barriers and facilitators that participants experience while engaging in breathing techniques. Identification of common challenges, such as difficulties with adherence to the breathing regimen or understanding the techniques, will inform potential modifications for future implementations of the training. Conversely, facilitators such as the perceived ease of learning and immediate applicability of the techniques in high-stress situations may enhance participant engagement and effectiveness of the program.

While the final results will hinge on detailed statistical analyses, early findings from the BREATHS trial are anticipated to elucidate significant reductions in seizure frequency, improvements in mental health metrics, and an overall favorable reception of the breathing control training as a non-pharmacological intervention for functional seizures. These outcomes could significantly contribute to the understanding and treatment of functional seizures, paving the way for more comprehensive and integrative strategies in clinical settings.

Strengths and Limitations

The BREATHS trial presents a number of notable strengths that enhance its potential impact on the clinical understanding and treatment of functional seizures. Firstly, the multicenter design allows for the inclusion of a diverse participant demographic, which increases the external validity of the findings. Such diversity can lead to more generalizable results, as variations in patient backgrounds, environments, and clinical settings might affect treatment responses. Moreover, the assessor-blinded approach effectively mitigates biases, ensuring that outcome evaluations remain impartial and that findings are based on objective data rather than subjective interpretations.

Another strength is the rigorous adherence to established diagnostic criteria for functional seizures, as outlined in the DSM-5. This methodological precision ensures that the study population is homogenous, leading to clearer insights into the efficacy of the breathing control training intervention. The clearly defined primary and secondary outcome measures, along with the use of validated assessment tools, lend additional credibility and reliability to the data being collected.

On the other hand, the study is not without limitations that may affect the outcomes and their interpretations. One key limitation is the reliance on self-reported seizure diaries for tracking seizure frequency. Such documentation is susceptible to biases, as participants may struggle with consistency in recording their episodes due to memory lapses or misconceptions about seizure definitions. Additionally, while the trial aims to address a significant treatment gap, the non-pharmacological nature of the intervention may limit its appeal to patients who expect or prefer more conventional medical therapies.

Furthermore, the potential for variability in facilitator delivery of the breathing techniques could introduce discrepancies in how the intervention is experienced by participants. Despite standardized session content, individual differences in facilitator approach and participant engagement may affect treatment outcomes, thereby complicating the interpretation of results.

The trial’s follow-up duration may also influence the durability of treatment effects. A short follow-up period may fail to capture long-term benefits or recurrences of seizures, which are critical for understanding the sustained impact of breathing control training.

In summary, while the BREATHS trial boasts robust methodological strengths, these are balanced by inherent limitations that necessitate cautious interpretation of the findings. Future studies could build on this research, considering these limitations and exploring the applicability of breathing control techniques in broader clinical contexts for individuals facing functional seizures.

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