Exercise testing in asymptomatic severe aortic stenosis.
Level 5 - mechanism / opinion, no new human data
Narrative review and expert opinion summarizing clinical guidelines without primary empirical data or systematic review methodology.
PubMed 24524744 · doi:10.1016/j.jcmg.2013.08.011
What was done
This narrative review synthesized guideline recommendations and clinical literature evaluating exercise stress testing and exercise stress echocardiography for risk stratification and surgical decision-making in patients with asymptomatic severe aortic stenosis.
What was found
The authors report that exercise-induced symptoms or an abnormal blood pressure response identifies patients at high risk for adverse outcomes. Furthermore, exercise stress echocardiography reveals advanced disease when patients demonstrate an increase in mean pressure gradient >18 to 20 mm Hg, absence of left ventricular contractile reserve, or systolic pulmonary arterial pressure >60 mm Hg during exercise.
Why it matters
Exercise testing can unmask occult symptoms and dynamic physiological abnormalities in seemingly asymptomatic patients, helping clinicians identify who might benefit from early valve replacement rather than watchful waiting.
Limits
As a narrative review, it presents clinical criteria and guideline perspectives without systematic review methods, meta-analytic effect estimates, or primary patient data.
Cited by
- supports Intense exercise is contraindicated for individuals with significant aortic stenosis, pontine strokes, or significant aortic aneurysms.