title: QT interval dispersion in the patients with central serous chorioretinopathy.
abstract: OBJECTIVE
  To evaluate QT dispersion (QTD) in patients with central serous chorioretinopathy (CSC).
  
  
  METHODS
  This clinical, comperative, case-control study included 30 patients with CSC at acute phase (Group 1) and 30 age- and sex-matched healthy subjects (Group 2, the control group). From all subjects, a 12-lead surface electrocardiography was obtained. The heart rate (HR), QT maximum (QTmax), QT minimum (QTmin), QT corrected (QTc), QTD and Tmean were manually measured and analyzed. Student's t-test and Pearson's method of correlation were used for statistical analysis.
  
  
  RESULTS
  The patient and control groups were matched for age, smoking status (rate and duration) and gender. There were no significant differences with regard to these among the groups (P>0.05). The participants included 19 men (63.3%) and 11 women (36.7%) in Group 1, 20 men (66.7%) and 10 women (33.3%) in Group 2. QTmax, QTD and QTc were significantly higher than those of healthy controls (P<0.001 for QTmax, P=0.01 for QTD and P=0.001 for QTc). QTmin, Tmean and HR did not differ significantly between the study groups (P=0.28 for QTmin, P=0.56 for Tmean and P>0.05 for HR). No significant correlation was found between duration of the disorder and QTD values (r=0.13, P>0.05).
  
  
  CONCLUSIONS
  These findings suggest that CSC may be associated with an increase in QTD and that the patients might be at risk for ventricular arrhythmia.
authors.affiliation: Department of Cardiology, School of Medicine, Firat University, Elazig 23119, Turkey.
authors.forename: Necati
authors.initials: N
authors.lastname: Dagli
authors.affiliation: Department of Ophthalmology, School of Medicine, Firat University, Elazig 23119, Turkey.
authors.forename: Burak
authors.initials: B
authors.lastname: Turgut
authors.affiliation: Elazig Education and Research Hospital, Elazig 23200, Turkey.
authors.forename: Rumeysa
authors.initials: R
authors.lastname: Tanyildizi
authors.affiliation: Department of Ophthalmology, School of Medicine, Firat University, Elazig 23119, Turkey.
authors.forename: Sabiha
authors.initials: S
authors.lastname: Kobat
authors.affiliation: Elazig Education and Research Hospital, Elazig 23200, Turkey.
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Kobat
authors.affiliation: Department of Cardiology, School of Medicine, Firat University, Elazig 23119, Turkey.
authors.forename: Orhan
authors.initials: O
authors.lastname: Dogdu
keywords: QT dispersion; central serous chorioretinopathy; electrocardiography; ventricular arrhythmia