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Diagnostic value of the ratio of recovery systolic blood pressure to peak exercise systolic blood pressure for the detection of coronary artery disease
- Source :
- Scopus-Elsevier
-
Abstract
- It has been previously reported that at treadmill exercise testing an abnormal ratio of recovery systolic blood pressure (SBP) to peak exercise SBP is more sensitive than exercise-induced angina or ST segment depression for diagnosing coronary artery disease (CAD). To investigate whether the SBP ratio keeps its diagnostic value during upright bicycle exercise, we evaluated the ratio of postexercise SBP to peak SBP in 73 patients with angiographically documented CAD and in 48 patients with normal coronary arteries (OV group) undergoing maximal stress testing on a bicycle ergometer. Three minutes after exercise ended, SBP ratio was significantly higher in the CAD than in the OV group (0.79 +/- 0.1 vs 0.71 +/- 0.08; p less than .001). Setting the upper normal limits of the recovery SBP ratio at 2 SDs from the mean for the OV group (SBP ratio = 0.98 and 0.88 at 1 and 3 min after exercise, respectively), with an increase or no change in SBP ratio at between 1 and 3 min of recovery considered an abnormal response, the sensitivity of SBP ratio was 30%, the specificity was 83%, and the accuracy was 51%. The respective values for ST depression were 81% (p less than .0001 vs SBP ratio), 48% (p less than .001 vs SBP ratio), and 67% (p less than .01 vs SBP ratio). Thus, for bicycle ergometer exercise testing, ST segment depression seems to be more accurate than SBP ratio in diagnosing CAD.
- Subjects :
- Adult
Male
Cardiac Catheterization
medicine.medical_specialty
Systole
Physical Exertion
Stress testing
Hemodynamics
Blood Pressure
Coronary Disease
Coronary Angiography
Coronary artery disease
Angina
Physiology (medical)
Internal medicine
medicine
Humans
ST segment
cardiovascular diseases
Aged
ST depression
business.industry
Middle Aged
Prognosis
medicine.disease
Endocrinology
Blood pressure
Exercise Test
Cardiology
Female
medicine.symptom
Cardiology and Cardiovascular Medicine
business
circulatory and respiratory physiology
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Scopus-Elsevier
- Accession number :
- edsair.doi.dedup.....96293358a7f6bf95ee85971b5266576f