Impact of Panic Disorder on Sleep Quality and Cognitive Function

A recent study conducted at Balikesir University Faculty of Medicine investigated the relationship between panic disorder (PD), sleep quality, and cognitive function. The study included 162 participants aged 18 to 65, diagnosed with PD according to DSM-5 criteria, and a control group of 78 individuals without psychiatric history. Participants were assessed using various validated instruments, including the Panic Disorder Severity Scale (PDSS), Pittsburgh Sleep Quality Index (PSQI), Wisconsin Card Sorting Test (WCST), and Iowa Gambling Task (IGT). The sample size was determined to ensure adequate statistical power, with 81 patients and 81 controls included to account for potential attrition.

Nature

The study found significant differences in sleep quality and cognitive performance between individuals with panic disorder and the control group. The PDSS, which evaluates the severity of panic symptoms, indicated that patients experienced heightened anxiety levels. The PSQI results revealed poorer sleep quality among the PD group, while the WCST and IGT highlighted impairments in executive function and decision-making abilities, respectively.

Nature

Participants received routine clinical care, primarily involving first-line pharmacological therapies such as selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs). The study adhered to established clinical guidelines, ensuring that all treatment decisions were made based on clinical judgment rather than research protocol. Notably, 97.5% of patients were on antidepressant treatment, with some receiving benzodiazepines and sedative antidepressants as needed.

Nature

Statistical analyses were performed using IBM SPSS Statistics 23.0, employing non-parametric tests due to the non-normal distribution of data. The Mann-Whitney U test was utilized for between-group comparisons, while the Wilcoxon Signed-Rank Test assessed within-group changes. Generalized Estimating Equations (GEE) were applied to analyze repeated measurements, ensuring robust handling of correlated data and missing values.

Nature

The study received ethical approval from the Balikesir University Non-Interventional Clinical Research Ethics Committee, and all participants provided written informed consent. The research adhered to the ethical standards outlined in the Declaration of Helsinki, with strict confidentiality measures in place to protect participant identities.

Nature

While the study's design and methodology were robust, some limitations were noted. The reliance on a specific patient population from a single institution may limit the generalizability of the findings. Additionally, the control group included hospital employees, which could introduce biases related to occupational stress or sleep patterns.

Nature

This study underscores the significant impact of panic disorder on sleep quality and cognitive function, highlighting the need for comprehensive treatment approaches that address both psychological and physiological aspects of the disorder. Further research is warranted to explore these relationships in broader populations and to evaluate the long-term effects of treatment on sleep and cognitive outcomes.

Nature

• “All procedures involving human participants were conducted in strict accordance with the ethical standards outlined in the 1964 Declaration of Helsinki and its later amendments, the ethical guidelines and research regulations specified by the Turkish Ministry of Health, and the Balikesir University Faculty of Medicine’s Ethics Committee guidelines for clinical research involving human participants.” — Balikesir University Faculty of Medicine

Nature

• “Medication decisions and adjustments were made solely on clinical grounds by the treating psychiatrists and were not dictated by the study protocol.” — Study Conclusion

Nature