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[Atrial pacing and the exercise test in the evaluation of coronary disease. A comparative study]
F Fernandes1, C Morais, M Esteves
1Serviço de Cardiologia, Faculdade de Medicina, Universidade de Lisboa.
Insights
Atrial Pacing is a valuable diagnostic tool for myocardial ischemia, comparable to Exercise Electrocardiography. This method offers a viable alternative for patients unable to complete a conclusive exercise test.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Clinical Trials
Background:
- Myocardial ischemia diagnosis relies on various stress tests.
- Exercise Electrocardiography (EECG) is a common method, but can be limited in some patients.
- Atrial Pacing (AP) offers an alternative stress method.
Purpose of the Study:
- To compare the diagnostic accuracy of Atrial Pacing versus Exercise Electrocardiography.
- To evaluate the relative value of AP and EECG in diagnosing myocardial ischemia.
- To identify AP as a potential alternative for inconclusive EECG.
Main Methods:
- Prospective study involving 16 patients referred for coronary cineangiography.
- All patients underwent Atrial Pacing, Exercise Test, and Coronary Angiography.
- Data collected from Cardiology Service departments.
Main Results:
- Atrial Pacing and Exercise Test showed high concordance in diagnosing myocardial ischemia.
- One case presented discordant results: negative AP, positive Exercise Test, and negative Coronary Angiography.
- Both diagnostic methods demonstrated comparable efficacy.
Conclusions:
- Atrial Pacing demonstrates favorable comparison with Exercise Test for diagnosing coronary ischemic disease.
- Atrial Pacing serves as a valid alternative diagnostic strategy.
- This is particularly relevant for patients who cannot perform a conclusive Exercise Test.
Objective:
to compare the relative value of Atrial Pacing and Exercise Electrocardiography in the diagnosis of Myocardial Ischaemia.
Design:
prospective study in patients referred for coronary cineangiography.
Setting:
Cineangiography and Ergonometry Departments of Cardiology Service. Santa Maria Hospital.
Patients:
16 patients (mean age 52.4 +/- 6.3), 13 males and 3 females. All were submitted to Atrial Pacing, Exercise Test and Coronariography.
Results:
both tests were concordant in all cases but one, with negative Atrial Pacing, positive Exercise Test and negative Coronariography.
Conclusions:
Atrial Pacing compares favourably with Exercise Test in the diagnosis of Coronary Ischaemic Disease. It may constitute a valid alternative in patients unable to perform a conclusive Exercise Test.