12 research outputs found

    Left Atrial Function Is Improved in Short-Term Follow-Up after Catheter Ablation of Outflow Tract Premature Ventricular Complexes

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    Background: Association of premature ventricular complexes (PVC) with left ventricular systolic dysfunction (LVSD) and efficacy of catheter ablation treatment have been demonstrated in studies. The role of left atrial (LA) mechanics in the etiopathogenesis of PVC-induced cardiomyopathy (PVC-CMP) as well as changes in LA mechanics with catheter ablation have not been studied before. Methods: A total number of 61 patients (Mean Age 43 ± 3) with idiopathic outflow tract (OT) PVCs undergoing radiofrequency catheter ablation (RFCA) were enrolled. ECG, 24 h Holter, and echocardiographic evaluation with left ventricular (LV) diastolic functions and LA volumetric assessments were performed before and three months after RFCA. Results: Along with a marginal increase in left ventricle ejection fraction (LVEF), improvement in diastolic functions and left atrial mechanics were observed in the study (LVEF 53 ± 7 versus 57 ± 6, p < 0.01) in short-term follow-up. The frequency of LV diastolic dysfunction (LVDD) decreased with catheter ablation (n = 5 to 0, p = 0.02). The overall LA function improved. Left atrium passive and overall emptying fraction (LAEF) increased significantly (0.32 ± 0.04 to 0.41 ± 0.04, p < 0.05 and 0.62 ± 0.04 to 0.65 ± 0.004, p < 0.05, respectively). Active LAEF decreased significantly (0.29 ± 0.005 to 0.24 ± 0.006, p < 0.05). Conclusions: The results of this study are indicative of "PVC-induced atriomyopathy" which responds to RFCA in short-term follow-up. Atrial dysfunction might play a role in symptoms and etiopathogenesis of LVSD

    Porównanie pomiaru cząstkowej rezerwy przepływu i oceny wzrokowej umiarkowanych zwężeń tętnic wieńcowych

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    Background: Fractional flow reserve (FFR) is an interventional diagnostic method, based on intracoronary pressure measurement, used for the assessment of the severity of coronary artery stenoses. Aim: Our study aimed to compare visual measurements made by multiple observers with FFR measurement in the assessment of angiographically moderate coronary artery stenosis. Methods: The angiographic images of moderate coronary artery lesions of 359 patients enrolled in the study were interpreted independently by three interventional cardiologists assigned as observers (O1, O2, O3). Results: In FFR, 37.9% were haemodynamically significant, while 62.1% were insignificant. 40.3% of the lesions were considered severe by O1, 39.9% by O2, and 44.4% by O3. When we compare the FFR results to the observers’ decisions about lesion severity, the serious lesion percentages of all three observers were different both from each other and from the FFR result, at a statistically significant level (respectively, p &lt; 0.001, p &lt; 0.001). The kappa analysis performed to check the agreement between the observers’ decisions and FFR revealed significant difference between FFR results and the decisions made by all observers (p &lt; 0.001). The kappa agreement analysis performed by matching observers’ decisions in pairs revealed a good agreement between O1 and O2 and a moderate agreement between O2 and O3 as well as O1 and O3, although there was still a significant disagreement between all pairs of observers (p &lt; 0.001). Conclusions: Visual assessment, even when performed by experienced interventional cardiologists, does not yield similar results with FFR procedure in the process of determination of the functional importance of moderately severe coronary artery stenoses.  Wstęp: Cząstkowa rezerwa przepływu (FFR) to interwencyjna metoda diagnostyczna polegająca na wewnątrznaczyniowym pomiarze ciśnienia w tętnicach wieńcowych, która jest stosowana w celu oceny stopnia ciężkości zwężenia tętnic wieńcowych. Cel: Badanie przeprowadzono w celu porównania pomiarów wizualnych wykonanych przez wielu obserwatorów z pomiarem FFR w ocenie umiarkowanego, wg badania angiograficznego, zwężenia tętnicy wieńcowej. Metody: Angiograficzne obrazy umiarkowanie zwężonych tętnic wieńcowych 359 chorych włączonych do badania zostały zinterpretowane niezależnie przez trzech kardiologów interwencyjnych określonych jako obserwatorzy (O1, O2, O3). Wyniki: W badaniu FFR 37,9% zmian było hemodynamicznie istotnych, natomiast 62,1% zmian uznano za nieistotne. Obserwator O1 zakwalifikował jako ciężkie 40,3% zmian, obserwator O2 — 39,9% zmian, a obserwator O3 — 44,4% zmian. Porównując wyniki FFR z ocenami obserwatorów, stwierdzono statystycznie istotne różnice w zakresie odsetka zmian określonych jako ciężkie zarówno między obserwatorami, jak i w odniesieniu do pomiarów FFR (odpowiednio, p &lt; 0,001, p &lt; 0,001). Analiza kappa przeprowadzona w celu sprawdzenia zgodności między oceną obserwatorów a badaniem FFR wykazała istotne różnice między wynikami FFR a decyzjami wszystkich obserwatorów (p &lt; 0,001). Analiza zgodności kappa, w której zestawiono pary decyzji obserwatorów, ujawniła dużą zgodność między obserwatorami O1 i O2, a także umiarkowaną zgodność między obserwatorami O2 i O3 oraz O1 i O3, chociaż nadal występowały istotne niezgodności między wszystkimi parami obserwatorów (p &lt; 0,001). Wnioski: Ocena wzrokowa, nawet jeśli jest przeprowadzona przez doświadczonego kardiologa interwencyjnego, nie pozwala uzyskać takich samych wyników jak pomiar FFR w procesie ustalania czynnościowego znaczenia umiarkowanie ciężkich zwężeń tętnic wieńcowych.

    Prosthetic valve endocarditis 7 months after transcatheter aortic valve implantation diagnosed with 3D TEE

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    Transcatheter aortic valve implantation (TAVI) was introduced as an alternative treatment for patients with severe symptomatic aortic stenosis for whom surgery would be high-risk. Prosthetic aortic valve endocarditis is a serious complication of surgical AVR (SAVR) with high morbidity and mortality. According to recent cases, post-TAVI prosthetic valve endocarditis (PVE) seems to occur very rarely. We present the case of a 75-year-old woman who underwent TAVI (Edwards Saphien XT) with an uneventful postoperative stay. She was diagnosed with endocarditis using three dimensional (3D) echocardiography on the TAVI device 7 months later and she subsequently underwent surgical aortic valve replacement. Little experience of the interpretation of transoesophageal echocardiography (TEE) and the clinical course and effectiveness of treatment strategies in post-TAVI endocarditis exists. We report a case of PVE in a TAVI patient which was diagnosed with three-dimensional transoesophageal echocardiography (3DTEE)
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