RESUMO
Objective: To compare the QT dispersion for coronary artery disease in cardiac stress test by transesophageal atrial pacing in patients with coronary heart disease
Study Design: Comparative study
Place and Duration of Study: This study was conducted at the Cardiology Department, Mayo Hospital, Lahore, Punjab Institute of Cardiology and Umar Cardiac Center, Lahore from January 2015 to August 2015
Materials and Methods: Fifty consecutive inpatients underwent cardiac stress testing [CST] by TEAP firstly, and then accepted selective coronary arteriography [SCA]. These patients were suspected to have coronary heart disease [CHD], 28 were positive [CAD] and 22 were negative, normal coronary group [NCA], as control group. Measurements of QTd in two groups before and after CST were analyzed in and between groups
Results: QTd was high in CAD than NCA group at baseline or every stages after CST [P
Conclusion: Patients with CAD have greater QTd than normal subjects; and QTd increased further in CAD during CST by TEAP, whereas, NCA group with no significant change