02 March 2014 : Original article
Med Sci Monit 2014; 20:350-354
BACKGROUND: Psoriasis is a systemic inflammatory disease associated with increased risk of cardiovascular diseases. The heart rate recovery index (HRRI) is an indicator of autonomic nervous system function and is an independent prognostic risk factor for cardiovascular diseases. The aim of this study was to evaluate the heart rate recovery indices in patients with psoriasis.
MATERIAL AND METHODS: Thirty-three psoriasis patients (22 male; mean age 41±11 years) and 26 healthy individuals (15 male; mean age 39±11 years) as a control group were included in the study. Baseline electrocardiography, transthoracic echocardiographic examinations, and exercise stress tests were performed in psoriasis and control groups. The heart rate recovery of the psoriasis group at 1, 2, 3, 4, and 5 minutes after maximal exercise were calculated and compared to those of the control group.
RESULTS: Baseline demographic and clinical characteristics of psoriasis and control groups including age, sex, body mass index, systolic blood pressure, and echocardiographic parameters were similar. Total cholesterol, low-density lipoprotein cholesterol, and triglyceride levels were significantly higher and high-density lipoprotein cholesterol levels were significantly lower in the psoriasis group (p<0.05). Heart rate recovery at 1, 2, 3, 4, and 5 minutes after maximal exercise were found to be significantly lower in the psoriasis group (p<0.05). Additionally, baseline heart rates before exercise were significantly higher in the psoriasis group (p<0.05).
CONCLUSIONS: We found that impaired HRRI in psoriasis patients, which indicates the underlying autonomic nervous system dysfunction, is a pathophysiologic mechanism for increased cardiovascular disease risk.
Keywords: Psoriasis, Autonomic Nervous System - physiology, Cardiovascular Diseases - physiopathology, Echocardiography, Electrocardiography, Exercise Test, Heart Rate - physiology, Psoriasis - complications, Risk Assessment - methods, Time Factors
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