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document
Regression of left ventricular hypertrophy after stentless versus conventional aortic valve replacement . The goal of this study was to analyze regression of left ventricular hypertrophy after randomization to conventional biological versus stentless aortic valve replacement . Stentless ( Freestyle , Toronto , n = 106 ) or conventional biological aortic valves ( Carpentier-Edwards , n = 74 ) were evaluated prospectively . Preoperatively there were no differences with regard to aortic valve pathology , left ventricular function , and pressure gradients between the two patient groups . The patient annulus index ( 13.55 vs. 13.46 mm ; NS ) measured intraoperatively was used as baseline for further comparison . Postoperatively , left ventricular mass index was 213+/-77 g/m2 ( stentless ) compared with 202+/-72 ( conventional group ) g/m2 ( NS ) , whereas after 6 months it was 141+/-41 g/m2 in the stentless and 170+/-43 g/m2 in the conventional group ( P < .05 ) . Regression of left ventricular hypertrophy occurs in all patients after aortic valve replacement . Nevertheless , the use of stentless bioprostheses leads to a significant enhancement , which may result in a reduction of the cardiac risk profile for the patient .
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Intervention_Physical
stentless
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Intervention_Surgical
conventional aortic valve replacement
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Intervention_Surgical
conventional biological versus stentless aortic valve replacement .
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Intervention_Physical
Stentless
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Intervention_Physical
conventional biological aortic valves
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Intervention_Physical
stentless bioprostheses
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Outcome_Physical
aortic valve pathology , left ventricular function , and pressure gradients
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Outcome_Physical
patient annulus index
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Outcome_Physical
left ventricular mass index
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Outcome_Physical
Regression of left ventricular hypertrophy
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Participant_Condition
aortic valve replacement
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Participant_Sample-size
106
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Participant_Sample-size
74
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Participant_Condition
aortic valve replacement