title: Predicting factors for a false positive treadmill exercise stress test.
abstract: BACKGROUND
  The present study was conducted to determine whether the exaggerated blood pressure (BP) response as well as other factors during exercise stress test (EST) is associated with false positive treadmill EST.
  
  
  METHODS
  This is a retrospective (case-control) study. Patient upon whom EST was performed at Her Majesty Cardiac Center (HMCC), Siriraj Hospital, Mahidol University and for whom the result revealed positive EST and underwent coronary angiogram (CAG) during October 2007-July 2011.
  
  
  RESULTS
  272 patients were included. 61% was male gender There were 65 false positive cases (23.9%). Most patients are female (60%). No significant difference in baseline systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) was noted between true and false positive group. Using Multiple logistic regression analysis to determining the independent predictors of false positive EST, exaggerated BP response did not result in false positive EST and factors that were associated with the occurrence of false positive EST are female (OR 2.604, 95% CI 1.109-5.952, p = 0.018), the use of statin (OR 0.402, 95% CI 0.194-0.835, p = 0.015), the difference between the peak and the baseline HR (OR 1.049, 95% CI 1.028-1.071, p < 0.001) and time from abnormal to baseline ECG (OR 0.725, 95% CI 0.641-0.820, p < 0.001).
  
  
  CONCLUSIONS
  The present study did not demonstrate that the exaggerated BP response during EST is associated with false positive EST
authors.affiliation: Division of Cardiology, Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Korakoth
authors.initials: K
authors.lastname: Towashiraporn
authors.forename: Rungroj
authors.initials: R
authors.lastname: Krittayaphong
authors.forename: Ahthit
authors.initials: A
authors.lastname: Yindeengam
mesh_terms: D001794:Blood Pressure; D016022:Case-Control Studies; D005080:Exercise Test; D005189:False Positive Reactions; D005260:Female; D005544:Forecasting; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies