3 research outputs found
Impact of moderate coronary atherosclerosis on long-term left ventricular remodeling after aortic valve replacement
Background: The role of coronary atherosclerosis (CA+) in ventricular remodeling after
aortic valve replacement (AVR) for isolated aortic stenosis (AS) is not well defined. We sought
to evaluate the impact of not revascularized moderate coronary atherosclerosis in long-term left
ventricular (LV) remodeling after AVR.
Methods: We assessed by coronariography the coronary artery disease in 66 patients referred
for AVR and evaluated morphological and functional LV data by echocardiography both preoperatively
and postoperatively (3 ± 1.2 years).
Results: In patients without coronary atherosclerosis, hypertrophy regression was more intense
and the absolute reverse remodeling was higher in LV mass index (–55.8 ± 36 g/m2 vs
–28.4 ± 34 g/m2, p = 0.004), reduction of LV dimensions (LV end-diastolic diameter
[LVEDD]: –4.1 ± 7.4 mm vs –2.2 ± 8.3 mm, p = 0.04), and regression of wall thickness
(interventricular septum [IVS]: –3.3 ± 2.6 mm vs –1.6 ± 2.2 mm, p = 0.01; and posterior
wall thickness [PWT]: –2.1 ± 2.1 mm vs 0.6 ± 2.1 mm, p = 0.012).
Conclusions: After AVR for AS, not revascularized moderate coronary atherosclerosis determines
a long-term lesser degree of LV hypertrophy regression and a worse absolute reverse
remodeling of LV mass index, LVEDD, IVS and PWT. (Cardiol J 2011; 18, 3: 277–281
Sustained benefit of left ventricular remodelling after valve replacement for aortic stenosis
Background: Valve replacement for aortic stenosis (AS) determines negative ventricular
remodelling. We used cross sectional and Doppler echocardiography to check how rapidly it occurs and to assess if these changes are sustained over time.
Methods: We evaluated in 34 patients subjected to aortic valve replacement for AS morphological
and functional (ejection fraction and E:A ratio) left ventricular data by echocardiography
prior to surgery and 2 postoperative studies: early after surgery (pQ1) and at
mid-term evolution (pQ2).
Results: Left ventricular mass index was reduced at pQ1 (from 152 ± 47 g/m2 to 113 ± 31 g/m2;
p < 0.01) as well as end-diastolic (from 51.3 mm to 48.3 mm; p < 0.03), end-systolic (from
32.2 mm to 29.4 mm; p < 0.02), interventricular septum (from 12.9 mm to 10.3 mm;
p < 0.01), and posterior wall (from 12.5 mm to 11 mm; p < 0.01) dimensions. Left ventricular
ejection fraction (from 61.2% to 65.2%; p < 0.04) and E:A ratio (from 0.94 to 0.98; p < 0.01)
increased significantly at pQ1. There were no significant differences in measurements between
pQ1 and pQ2.
Conclusions: Aortic valve replacement surgery leads to a rapid negative left ventricular
remodelling during the first 7 months, including a decrease in myocardial hypertrophy and an
improvement in systolic and diastolic function. These beneficial hemodynamic changes are
sustained for at least 3 years
Wp艂yw umiarkowanej mia偶d偶ycy t臋tnic wie艅cowych na przebudow臋 lewej komory serca u chorych po wymianie zastawki aortalnej
Wst臋p: Znaczenie mia偶d偶ycy t臋tnic wie艅cowych (CA+) w procesie przebudowy lewej komory
po wymianie zastawki aortalnej (AVR) z powodu izolowanej stenozy aortalnej (AS) jest wci膮偶
przedmiotem bada艅. Celem pracy by艂a ocena wp艂ywu niepoddanych rewaskularyzacji umiarkowanych
zmian mia偶d偶ycowych t臋tnic wie艅cowych na odleg艂y proces remodelingu lewej komory
serca (LV) po AVR.
Metody: Za pomoc膮 koronarografii oceniono stopie艅 nasilenia choroby wie艅cowej u 66 pacjent贸w
zakwalifikowanych do AVR i pozyskano dane echokardiograficzne dotycz膮ce budowy
i funkcji LV zar贸wno przed-, jak i pooperacyjnie (3 ± 1,2 roku).
Wyniki: U pacjent贸w bez mia偶d偶ycy t臋tnic wie艅cowych ust膮pienie przerostu i ca艂kowite odwr贸cenie
remodelingu by艂y wi臋ksze ni偶 w grupie chorych z mia偶d偶yc膮, gdy por贸wnano indeks
masy LV (–55,8 ± 36 g/m2 v. –28,4 ± 34 g/m2; p = 0,004). Ponadto w grupie os贸b bez choroby
wie艅cowej obserwowano istotne zmniejszenie wymiar贸w LV [wymiar ko艅coworozkurczowy
LV (LVEDD): –4,1 ± 7,4 mm v. –2,2 ± 8,3 mm; p = 0,04] oraz grubo艣ci 艣cian [przegrody
mi臋dzykomorowej (IVS): –3,3 ± 2,6 mm v. –1,6 ± 2,2 mm; p = 0,01; i 艣ciany tylnej (PWT):
–2,1 ± 2,1 mm v. 0,6 ± 2,1 mm; p = 0,012].
Wnioski: Brak rewaskularyzacji umiarkowanych zmian mia偶d偶ycowych w nasierdziowych
t臋tnicach wie艅cowych u pacjent贸w poddanych AVR z powodu AS prowadzi w odleg艂ej obserwacji
do zwolnienia procesu regresji przerostu lewej komory i zaburzenia odwr贸cenia remodelingu
w analizie nast臋puj膮cych parametr贸w: indeksu masy LV, LVEDD, IVS i PTW. (Folia
Cardiologica Excerpta 2011; 6, 3: 162–167