Improving Echo Measurements in the Diagnosis of Aortic Stenosis
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Aortic stenosis is a common valvular heart disease, affecting mainly people over age 60. It is characterized by years to decades of slow progression followed by rapid clinical deterioration and a high death rate once symptoms develop. The onset of symptoms confers a poor prognosis: patients die within an average of five years after the onset of angina, three years after the onset of syncope, and two years after the onset of heart failure symptoms. The overall mortality rate is 75% at three years without surgery. Drug therapy for it remains ineffective, and aortic valve replacement is the only recommended long-term treatment.
Reclassification of patients based on CT measurements of LVOT for AVA and SVI. [ Time Frame: Baseline ]
Echocardiography assessments of Aortic stenosis are technician dependent and can vary while CT evaluations are consistent and do not vary by user. This study will retrospectively examine subjects that have undergone both assessments as a workup for definitive aortic valve treatment. The anatomical measurements obtained from CT will be used to recalculate Aortic Valve Area utilizing the standard formulas and gradients/velocities obtained from echocardiography. Patients will be reclassified appropriately into "severe and non-severe" AS according to the new calculations. The results of this will be analyzed to establish standardized ranges for measurements to prevent over or under measuring aortic valve anatomy during these tests (Echo and CT).
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Ages Eligible for Study:
18 Years and older (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
This study is an observational, retrospective review of data collected as standard of care. The study intends to review the charts of up to 400 patients over the last 5 years who underwent both CT and TTE within a one-week timeframe as a workup for aortic valve stenosis at The Heart Hospital Baylor Plano (THHBP) or Baylor University Medical Center (BUMC).
Adults over the age of 18.
Any patient undergoing both TTE and CT scans within a one-week timeframe as a workup for aortic stenosis.
There are no specific exclusion criteria for this retrospective review.