Impact of Spiroergometer Parameters as Diagnostic Marker of Cardiac Ischemia in Pts. With Stable Angina Compared to FFR.

Impact of Ergospirometric Oxygen Uptake Under Exercise as Diagnostic Marker of Cardiac Ischemia in Patients With Stable Angina Compared to Non Invasive and Invasive (FFR) Measurement of Ischemia

In Patients with stable Angina pectoris CCS 1-3 exercise testing for ischemia detection is widely used despite the known limitations. Measurement of the FFR is invasive but gold standard for Ischemia detection.

Adding of parameters of spiroergometer might help to improve diagnostic accuracy of non invasive exercise testing. Therefore the trial is evaluating diagnostic accuracy of spiroergometric parameters compared to invasive FFR measurement.

Inclusion Criteria:

• stable Angina (CCS >1-3) with suspected CAD or
• dyspnoea at exertion NYHA >2 or
• signs of ischemia within SPECT or exercise electrocardiography
• willingness to participate in the trial

Exclusion Criteria:

• Unstable angina or myocardial infarction within the last 2 weeks
• inability to perform bicycle exercise test
• significant valvular disease
• HOCM
• av- block >I degree
• asthma bronchiales