Aortic root replacement (Bentall operation) is the standard operation for @entity1 who have lesions of the ascending aorta associated with @entity886 . We analyzed the mid-term results for left ventricular energetics after the Bentall operation for @entity1580 with @entity337 . We measured left ventricular contractility (end-systolic elastance; Ees), afterload (effective arterial elastance; Ea), and efficiency (ventriculoarterial coupling; Ea/Ees, and the ratio of @entity64 work and pressure-volume area; SW/ @entity939 ) based on transthoracic echocardiography data before, after, and approximately 1 year after the Bentall operation in 15 @entity1 with @entity1580 with @entity337 . Left ventricular volume was calculated by the Teichholz M-mode method. Ees and Ea were approximated as follows: Ees=mean blood pressure/minimal left ventricular volume, and Ea=systolic blood pressure/(maximal left ventricular volume--minimal left ventricular volume). Ea/Ees and SW/ @entity939 were then calculated. Left ventricular volume was normalized with body surface area. Ees increased after the Bentall operation and around 1 year later (from 2.17+/-1.09 to 3.92+/-2.26 and 5.33+/-1.90 mmHg x m(2)/ml, P<0.001), thus resulting in an improvement in SW/ @entity939 (from 68.8+/-8.2 to 70.9+/-9.5 and 74.7+/-5.2%, P=0.045). Ea also increased after the Bentall operation and 1 year later (from 1.77+/-0.61 to 2.88+/-1.28 and 3.54+/-1.43 mmHg x m(2)/ml, P<0.001). The mid-term results for ventricular contractility and efficiency after the Bentall operation for @entity1580 with @entity337 are excellent and satisfactory.

Ventricular energetics in aortic root replacement for @entity1580 with XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity64 :: ('MESH:D020521', 'Disease') :: ['stroke'] @entity939 :: ('CHEBI:17246', 'Chemical') :: ['PVA'] @entity886 :: ('MESH:C563178', 'Disease') :: ['aortic valve disease'] @entity337 :: ('MESH:D001022', 'Disease') :: ['aortic regurgitation'] @entity1580 :: ('MESH:C562834', 'Disease') :: ['annuloaortic ectasia']
@entity337 :: (MESH:D001022,Disease) :: ['aortic regurgitation']
