![]() While both patient groups (atrial fibrillation and sinus rhythm LGAS) were older with more comorbidities compared to patients with sinus rhythm HGAS, the prevalence of symptoms was higher in patients with atrial fibrillation LGAS and not different from patients with sinus rhythm HGAS. Nkomo notes: "Patients with atrial fibrillation LGAS had a high prevalence of high-signal gradients (33%) compared to patients with sinus rhythm LGAS (9%). Atrial fibrillation LGAS in 91 patients (6%)īaseline clinical characteristics and computerized tomography aortic valve calcium scores were collected from the medical record.ĭr.Sinus rhythm LGAS in 236 patients (15%).Atrial fibrillation HGAS in 178 patients (12%).Sinus rhythm HGAS in 1,036 patients (67%).Patients were divided according to rhythm (sinus rhythm versus atrial fibrillation) at the time of echocardiography and further categorized with HGAS (average peak velocity ≥ 4 meters per second or mean gradient ≥ 40 mm Hg) or LGAS (average peak velocity < 4 meters per second and mean gradient <40 mm Hg). ![]() 31, 2016, for assessment of native aortic stenosis with an aortic valve area ≤ 1 cm 2 and left ventricular ejection fraction ≥ 50%. Researchers identified 1,541 patients who received transthoracic echocardiography examination between Jan. Results were published in Circulation: Cardiovascular Imaging in 2021. ![]() Nkomo, M.D., M.P.H., a cardiologist at Mayo Clinic in Rochester, Minnesota, and research colleagues used the Mayo Clinic Echocardiography Laboratory database to determine the significance of high transvalvular gradients in atrial fibrillation LGAS. ![]()
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