Evaluating the effectiveness of rosuvastatin in preventing the progression of diastolic dysfunction in aortic stenosis: A substudy of the aortic stenosis progression observation measuring effects of rosuvastatin (ASTRONOMER) study

Cardiovascular Ultrasound

Research

Kapil M Bhagirath¹  James W Tam¹  Erin Karlstedt¹  Davinder S Jassal²  Jean G Dumesnil³  Matthew Zeglinski⁴  Koon K Teo⁵  Kwan L Chan⁶ 

[1] Cardiology Division, Department of Internal Medicine, St. Boniface General Hospital, Winnipeg, Manitoba, Canada;Cardiology Division, Department of Internal Medicine, St. Boniface General Hospital, Winnipeg, Manitoba, Canada;Institute of Cardiovascular Sciences, Cardiology Division, Department of Cardiac Sciences, St. Boniface General Hospital, Winnipeg, Manitoba, Canada;Department of Radiology, St. Boniface General Hospital, Winnipeg, Manitoba, Canada;Hopital Laval, Sainte-Foy, Quebec, Canada;Institute of Cardiovascular Sciences, Cardiology Division, Department of Cardiac Sciences, St. Boniface General Hospital, Winnipeg, Manitoba, Canada;McMaster University, Hamilton, Ontario, Canada;University of Ottawa Heart Institute, Ontario, Canada;

关键词: Left Ventricular Hypertrophy;    Aortic Stenosis;    Diastolic Dysfunction;    Statin Therapy;    Rosuvastatin;   

DOI  :  10.1186/1476-7120-9-5

 received in 2010-12-09, accepted in 2011-02-07,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundTissue Doppler imaging (TDI) is a noninvasive echocardiographic method for the diagnosis of diastolic dysfunction in patients with varying degrees of aortic stenosis (AS). Little is known however, on the utility of TDI in the serial assessment of diastolic abnormalities in AS.ObjectiveThe aim of the current proposal was to examine whether treatment with rosuvastatin was successful in improving diastolic abnormalities in patients enrolled in the Aortic Stenosis Progression Observation Measuring Effects of Rosuvastatin (ASTRONOMER) study.MethodsConventional Doppler indices including peak early (E) and late (A) transmitral velocities, and E/A ratio were measured from spectral Doppler. Tissue Doppler measurements including early (E') and late (A') velocities of the lateral annulus were determined, and E/E' was calculated.ResultsThe study population included 168 patients (56 ± 13 years), whose AS severity was categorized based on peak velocity at baseline (Group I: 2.5-3.0 m/s; Group II: 3.1-3.5 m/s; Group III: 3.6-4.0 m/s). Baseline and follow-up hemodynamics, LV dimensions and diastolic functional parameters were evaluated in all three groups. There was increased diastolic dysfunction from baseline to follow-up in each of the placebo and rosuvastatin groups. In patients with increasing severity of AS in Groups I and II, the lateral E' was lower and the E/E' (as an estimate of increased left ventricular end-diastolic pressure) was higher at baseline (p < 0.05). However, treatment with rosuvastatin did not affect the progression of diastolic dysfunction from baseline to 3.5 year follow-up between patients in any of the three predefined groups.ConclusionIn patients with mild to moderate asymptomatic AS, rosuvastatin did not attenuate the progression of diastolic dysfunction.

【 授权许可】

CC BY   
© Jassal et al; licensee BioMed Central Ltd. 2011