Introduction: The relationship between the interatrial block (IAB) and atrial fibrillation (AF) has been demonstrated in previous studies. This study aimed to investigate the relationship of the interatrial block (IAB) with the psoriasis area severity index (PASI) score in patients with psoriasis.
Methods: Patients with psoriasis who were examined at the cardiology outpatient clinic between January 2017 and May 2019 were retrospectively screened. Two hundred and thirty-eight patients whose ECG and PASI scores were available were included in the study. Interatrial block (IAB) was defined as if P wave duration was ≥120 msec with (advanced IAB) or without (partial IAB) biphasic P morphology in the inferior electrocardiographic leads. The prevalence of IAB in patients with psoriasis and its relationship with the severity of psoriasis were evaluated in the present study.
Results: The mean age of the patients was 34 ± 7 years, 53% of the study population were males. The average PASI score was 3.29 ± 3.81. IAB was observed in 9.9% of patients. Partial IAB (pIAB) was observed in 6% of patients whereas the prevalence of advanced IAB (aIAB) was 3.0%. There was no statistically significant difference between the PASI score in patients with and without IAB (6.0 [3.0-13.5] vs. 7.0 [2.5 -22.5], respectively, p = 0.35). Mean P wave duration (PWD) was 101 (90-111) ms. No statistically significant correlation was observed between PWD and the PASI score (p = 0.35, r = 0.06).
Conclusion: No significant correllation was identified between IAB and the PASI score which is used for assessing the severity of psoriasis.
Key words: atrial fibrillation, electrocardiography, interatrial block, psoriasis, psoriasis area severity index, stroke
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