Frequency of electrocardiographic abnormalities in patients with psoriasis

Psoriasis is a chronic inflammatory disease associated with cardiovascular disease, for example, myocardial infarction, stroke, cardiovascular death, and arrhythmias. The resting electrocardiogram may carry prognostic information, but limited evidence is available of electrocardiographic findings in subjects with psoriasis. The electrocardiographic results were compared between 1,131 subjects with self-reported psoriasis and 18,397 controls participating in the Danish General Suburban Population Study (GESUS). The mean heart rate was marginally increased in patients with psoriasis (66 ± 11 vs 65 ± 11 beats/min, p = 0.007), but not after adjustment for smoking and body mass index. All other examined electrocardiographic variables, including QT interval corrected for heart rate with the Fridericia formula, PR interval, QRS duration, R axis, P-wave duration in lead V1, P-terminal force, J point elevation in lead V1, electrocardiographic criteria for left ventricular hypertrophy, electrocardiographic signs of previous myocardial infarction, and premature ventricular or supraventricular complexes, respectively, were comparable between the 2 groups. In conclusion, psoriasis was associated with a marginal increase in resting heart rate, which was driven by smoking and increased body mass index. All other examined electrocardiographic variables were similar between the 2 groups. The results suggest that psoriasis per se is not associated with significant abnormalities of the electrocardiogram.