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Implications of normal left ventricular wall thickness in critical aortic stenosis
Insights
Echocardiographic left ventricular wall thickness is usually used to assess aortic stenosis severity. However, normal wall thickness can occur in severe cases, indicating impaired heart function.
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Imaging
Background:
- Left ventricular wall thickness is a standard metric for assessing aortic stenosis severity.
- Increased wall thickness is typically associated with ventricular hypertrophy in aortic stenosis.
Observation:
- This report presents two cases of severe, critical aortic stenosis.
- Both cases exhibited normal left ventricular wall thickness despite severe aortic stenosis.
Findings:
- Normal left ventricular wall thickness can be observed in patients with severe aortic stenosis.
- Impaired left ventricular contractile function was noted in these cases.
- Patients presented with significant symptoms.
Implications:
- Relying solely on wall thickness can be misleading in aortic stenosis assessment.
- Comprehensive echocardiographic evaluation, including contractile function, is crucial.
- This highlights the importance of considering multiple parameters for accurate stenosis grading.
Abstract:
It is standard practice for clinicians to consider echocardiographically-measured left ventricular wall thickness when estimating the severity of aortic stenosis. Most consider the degree of wall thickness above normal limits is in proportion to ventricular hypertrophy. Employment of wall thickness information to assess aortic stenosis severity, while generally reliable, can occasionally be misleading. Two cases are presented with findings of severe, critical aortic stenosis and normal wall thickness. In each case, left ventricular contractile function was markedly impaired and the patient markedly symptomatic.