Search results for "Catheter"
showing 10 items of 482 documents
Numerical simulation of transcatheter mitral valve replacement: The dynamic implication of LVOT obstruction in the valve-in-ring case.
2022
Transcatheter mitral valve replacement (TMVR) has been used for “off-label” treatment when annuloplasty band ring for mitral repair fails. However, the complex anatomy and function of the mitral valve may lead to fatal complications as a result of the left ventricular outflow tract (LVOT) obstruction in TMVR. We report the structural and hemodynamic response of LVOT obstruction resulting from TMVR with the Edwards SAPIEN 3 Ultra (S3) device. We modified the original Living Heart Human Model (LHHM) to account for a failed mitral valve with an annuloplasty band ring and simulated the cardiac beating condition in the setting of S3 device implantation. Findings demonstrated a high dynamic behav…
Transgastric imaging-The key to successful periprocedural TEE guiding for edge-to-edge repair of the tricuspid valve.
2021
Intraprocedural transesophageal echocardiography (TEE) guidance plays an essential role in transcatheter repair therapy of the tricuspid valve (TV). So far, several different imaging concepts are in use. We propose an imaging protocol that fully addresses the morphological complexity of the TV and further offers efficacious workarounds for the frequently occurring restrictions of TV imaging in edge-to-edge repair of the TV. As a tertiary referral center with a large experience of more than 250 cases of transcatheter edge-to-edge repair (TEER) of the TV performed at the Heart Valve Center in Mainz/Germany, we have constantly adapted our peri-interventional echocardiographic approach to accom…
Preliminary Short-term Results of a Population of Patients Treated with MitraClip therapy: one Center Experience
2017
<p><span>Objectives: This retrospective analysis sought to evaluate 1-month outcomes and therapy effectiveness of a population of patients treated with MitraClip therapy. We describe in this article the preliminary results of primary effictiveness endpoint.</span></p><p><span>Background: Percutaneous Mitral Repair is being developed to treat severe mitral regurgitation (MR),with increasing real-world cases of functional MR(FMR). In the EVEREST(Endovascular Valve Edge-to-Edge Repair Study)II trial,percutaneous device showed superior safety but less reduction in MR at 1year. 4-year outcomes from EVEREST II trial showed no difference in the prevalence of mod…
Loco-regional treatment of hepatocellular carcinoma: Role of contrast-enhanced ultrasonography
2022
Hepatocellular carcinoma (HCC) is one of the few cancers for which locoregional treatments (LRTs) are included in international guidelines and are considered as a valid alternative to conventional surgery. According to Barcelona Clinic Liver Cancer classification, percutaneous treatments such as percutaneous ethanol injection, radiofrequency ablation and microwave ablation are the therapy of choice among curative treatments in patients categorized as very early and early stage, while transcatheter arterial chemoembolization is considered the better option for intermediate stage HCC. A precise assessment of treatment efficacy and surveillance is essential to optimize survival rate, whereas r…
An efficient method for subcutaneous veins localization using Near Infrared imaging
2014
In the majority of the medical treatments, intravenous catheterization is the most important phase in which skilled medical practitioners locate the best vein and perform catheterization process for medication or blood sampling. Due to the different physiological characteristics, mainly darker skin tone, scars or dehydrated condition of patients, medical staff stumbles in localization of veins. This paper proposes an enhanced method which intends to overcome the difficulty faced by medical staff in veins localization for intravenous catheterization. Using the Near Infrared imaging and image processing algorithms a novel approach for veins visualization is proposed. In order to have complete…
Successful Foley catheter tamponade of an epigastric vessel trocar injury in a toddler – A case report
2021
Highlights • Epigastric vessel injury is a well recognized complication during laparoscopic trocar placement. • Precautionary measures to prevent trocar induced injuries should be implemented to lower the incidence of this complication. • If this complication is encountered, tamponade by Foley catheter placement is an effective measure to provide hemostasis. • Hemorrhage control using a Foley catheter is feasible even in small children and toddlers.
FFR in a Bypass
2016
FFR can be used to determine whether by-pass lesions are significant. In this case, an additional complication was the fact that the lesion was placed at the ostium of the graft: in this case, it is important to retract the guiding catheter to avoid wedging.
Hyperspectral venous image quality assessment for optimum illumination range selection based on skin tone characteristics
2014
Background Subcutaneous veins localization is usually performed manually by medical staff to find suitable vein to insert catheter for medication delivery or blood sample function. The rule of thumb is to find large and straight enough vein for the medication to flow inside of the selected blood vessel without any obstruction. The problem of peripheral difficult venous access arises when patient’s veins are not visible due to any reason like dark skin tone, presence of hair, high body fat or dehydrated condition, etc. Methods To enhance the visibility of veins, near infrared imaging systems is used to assist medical staff in veins localization process. Optimum illumination is crucial to obt…
Radio-frequency thermal ablation (RFTA) of small hepatocellular carcinoma in patients with cirrhosis. Experience at a single tertiary referral center
2005
AIM: Radio-frequency thermal ablation (RFTA) may prolong the survival of patients with small hepatocellular carcinoma (HCC) associated with cirrhosis. The aim of this study was to evaluate efficacy and safety of RFTA. METHODS: We performed the Kaplan-Meier analysis to estimate the survival rate in 69 consecutive patients with HCC (mean age 66+/-6.5 years; 44/25 male/female; 56 Child-Pugh class A and 13 Child-Pugh class B) treated by RFTA. A single lesion was observed in 60/69 (87%), two lesions in 8/69 (11.6 %), and 3 lesions in 1/69 (1.4 %) of patients. The tumor size was = or <3 cm in 60/69 (87%). RESULTS: Twenty-two patients died during follow-up. Overall survival rates were 81%, 66%, an…
Hepatocellular carcinoma recurrence in patients with curative resection or ablation: impact of HCV eradication does not depend on the use of interfer…
2016
none 48 no Background: In HCV-infected cirrhotic patients with successfully treated early hepatocellular carcinoma (HCC), the time to HCC recurrence and the effects of sustained viral eradication (SVR) by interferon (IFN)-based or IFN-free regimens on HCC recurrence remain unclear. Aim: To perform an indirect comparison of time to recurrence (TTR) in patients with successfully treated early HCC and active HCV infection with those of patients with SVR by IFN-based and by IFN-free regimens. Methods: We evaluated 443 patients with HCV-related cirrhosis and Barcelona Clinic Liver Cancer Stage A/0 HCC who had a complete radiological response after curative resection or ablation. Active HCV infec…