Search results for "Tricuspid Valve"

Difference in hemodynamic and wall stress of ascending thoracic aortic aneurysms with bicuspid and tricuspid aortic valve.

2012

The aortic dissection (AoD) of an ascending thoracic aortic aneurysm (ATAA) initiates when the hemodynamic loads exerted on the aneurysmal wall overcome the adhesive forces holding the elastic layers together. Parallel coupled, two-way fluid–structure interaction (FSI) analyses were performed on patient-specific ATAAs obtained from patients with either bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) to evaluate hemodynamic predictors and wall stresses imparting aneurysm enlargement and AoD. Results showed a left-handed circumferential flow with slower-moving helical pattern in the aneurysm's center for BAV ATAAs whereas a slight deviation of the blood flow toward the anterolater…

AB0564 HEART VALVULAR ALTERATIONS IN A MULTICENTRE ITALIAN COHORT OF SSC PATIENTS

2020

Background:systemic sclerosis (SSc) in a chronic autoimmune disease characterized by endothelial dysfunction, diffuse microangiopathy, and fibrosis of skin and visceral organs. Typical cardiac involvement may includes microvascular ischemia, contraction band necrosis, and patchy fibrosis, leading mainly to arrythmias and conduction defects, diastolic dysfunction, or right ventricular failure (secondary to pulmonary arterial hypertension) [1]. Valvular diseases are poorly described and generally not considered a typical sign of SSc [2-4].Objectives:we aimed to describe valvular alterations in a multicentre cohort of SSc patients.Methods:we consecutively recruited 118 SSc patients (M/F: 14/10…

Intraoperative Evaluation of the Reconstruction of the Atrioventricular Valves by Means of Transesophageal Echocardiography

1989

In 44 operations, the mitral valve was reconstructed in 28 patients, the tricuspid valve in 12, and both atrioventricular (AV) valves in four. The results of reconstruction were tested first in the open arrested heart by injection of a crystalloid solution into the left or right ventricle, either through the reconstructed valve or via one of the great arteries. Upon termination of cardiopulmonary bypass the valve function was examined in the beating heart by transesophageal contrast echocardiography (TEE). For purposes of visualization, 0.5–1.0 cc of agitated Gelifundol was injected into the ventricle. In 31 patients, open testing and echocardiographic visualization showed identical, good o…

Computed tomography imaging needs for novel transcatheter tricuspid valve repair and replacement therapies

2020

Abstract Transcatheter tricuspid valve therapies are an emerging field in structural heart interventions due to the rising number of patients with severe tricuspid regurgitation and the high risk for surgical treatment. Computed tomography (CT) allows exact measurements of the annular plane, evaluation of adjacent structures, assessment of the access route, and can also be used to identify optimal fluoroscopic projection planes to enhance periprocedural imaging. This review provides an overview of current transcatheter tricuspid valve repair and replacement therapies and to what extent CT can support these interventions.

Tricuspid valve repair with the Cardioband system: two-year outcomes of the multicentre, prospective TRI-REPAIR study

2021

AIMS: Tricuspid regurgitation (TR) is associated with high morbidity and mortality rates with limited treatment options. We report one- and two-year outcomes of the Cardioband tricuspid valve reconstruction system in the treatment of ≥moderate functional TR in the TRI-REPAIR study. METHODS AND RESULTS: Thirty patients were enrolled in this single-arm, multicentre, prospective study. Patients were evaluated as having ≥moderate, symptomatic functional TR and deemed inoperable due to unacceptable surgical risk. Clinical, functional, and echocardiographic data were prospectively collected up to two years (mean duration 604±227 days). At baseline, 83% were in NYHA Class III-IV, and the mean LVEF…

Verschluß einer Gaumenspalte bei einer Patientin mit Ebstein-Anomalie unter Hochfrequenzoszillationsbeatmung

1998

Hintergrund: Es wird uber den zunachst nicht erfolgreichen Versuch der konventionellen Beatmung wahrend eines kieferchirurgischen Eingriffs bei einer Patientin mit Ebstein-Anomalie berichtet. Verminderter pulmonaler Blutflus und entsprechend verminderter linksventrikularer Auswurf fuhrten zu einer arteriellen Hypotonie mit Sauerstoffsattigungsabfall. Unter Spontanatmung normalisierte sich der kritische Zustand rasch. Operation: Der Einsatz eines Hochfrequenzoszillationsbeatmungsgerats (SensorMedics 3100A) mit gleichbleibendem mittlerem Atemwegsdruck und Vermeiden inspiratorischer Spitzendrucke ermoglichte 2 Jahre spater eine adaquate Ventilation und Oxygenierung der Patientin, so das die Op…

Polyamines and microbiota in bicuspid and tricuspid aortic valve aortopathy

2019

Polyamines are small aliphatic cationic molecules synthesized via a highly regulated pathway and involved in general molecular and cellular phenomena. Both mammalian cells and microorganisms synthesize polyamines, and both sources may contribute to the presence of polyamines in the circulation. The dominant location for microorganisms within the body is the gut. Accordingly, the gut microbiota probably synthesizes most of the polyamines in the circulation in addition to those produced by the mammalian host cells. Polyamines are mandatory for cellular growth and proliferation. Established evidence suggests that the polyamine spermidine prolongs lifespan and improves cardiovascular health in …

The Association of H1N1 Pandemic Influenza with Congenital Anomaly Prevalence in Europe

2015

BACKGROUND: In the context of the European Surveillance of Congenital Anomalies (EUROCAT) surveillance response to the 2009 influenza pandemic, we sought to establish whether there was a detectable increase of congenital anomaly prevalence among pregnancies exposed to influenza seasons in general, and whether any increase was greater during the 2009 pandemic than during other seasons.METHODS: We performed an ecologic time series analysis based on 26,967 pregnancies with nonchromosomal congenital anomaly conceived from January 2007 to March 2011, reported by 15 EUROCAT registries. Analysis was performed for EUROCAT-defined anomaly subgroups, divided by whether there was a prior hypothesis of…

Transcatheter edge-to-edge repair for tricuspid regurgitation in Barlow-type tricuspid valve prolapse

2020

Update on tricuspid regurgitation

2014

Although commonly detected by transthoracic echocardiography, tricuspid regurgitation (TR) has been somehow neglected, and recent data have emerged on the need for careful examination of the tricuspid valve. Functional or secondary TR is the most frequent etiology of tricuspid valve pathology in western countries and is related to tricuspid annular dilation and leaflet tethering. The prognostic role of TR associated with organic left-sided valvular heart disease is well known. However, the value of functional TR in outcome stratification of patients with advanced left ventricular dysfunction is less clear. Surgical tricuspid repair has been avoided for years, because of the misconception th…