Search results for "DART"

Assessment of cardiac performance using Tei indices in patients undergoing pulmonary thromboendarterectomy.

2002

This study was designed to evaluate left and right ventricular performance using Tei indices in patients with severe chronic thromboembolic pulmonary hypertension undergoing pulmonary thromboendarterectomy (PTE). The Doppler-derived indices are easily measurable indicators of ventricular function based on nongeometric assessment, which helps overcome some of the difficulties entailed in the geometric assessment of left ventricular (LV) and right ventricular (RV) function in pulmonary hypertension.The indices were derived for 24 patients (aged 54+/-14 years) before and after PTE. Calculation of these indices was based on the duration of two time intervals using the formula (A - B)/B, where A…

Pulmonary endarterectomy in chronic thromboembolic pulmonary hypertension.

2018

Management and outcome of patients with operable chronic thromboembolic pulmonary hypertension (CTEPH) who underwent pulmonary endarterectomy (PEA) at a large German referral center were investigated.In Germany, 394 PEAs were performed in 2014 and 2015 with an in-hospital mortality rate of 5.8%. Of these, 253 patients (64.2%) were treated at the Kerckhoff Clinic, Bad Nauheim, and 237 (93.7%; median age, 62 years [interquartile range [IQR], 52-72 years]; 46.0% female) were included in the present analysis.On referral, 52 patients (22.0%) were treated with pulmonary arterial hypertension-specific drugs and 95 (40.4%) were treated with non-vitamin K-dependent oral anticoagulants, and 14 (5.9%)…

Pathophysiology of Impaired Right and Left Ventricular Function in Chronic Embolic Pulmonary Hypertension

2000

Study objectives: This study sought to evaluatethe pathophysiology of left and right heart failure in patients withchronic thromboembolic pulmonary hypertension (CTEPH) who werehospitalized to undergo pulmonary thromboendarterectomy (PTE). Design: Thirty-nine patients (16 women and 23 men;mean ± SD age, 55 ± 12 years) with severe CTEPH were examinedbefore and 13 ± 8 days after PTE by way of transthoracicechocardiography and right heart catheterization. Measurements and results: Examination resultsconfirmed in all cases that before surgery the right ventricles wereenlarged and systolic function was impaired. Moderate to severetricuspid valve regurgitation was observed. Left ventriculareccent…

Long-term results after thromboendarterectomy for chronic pulmonary embolism1

1999

Objective: In patients with chronic thromboembolic pulmonary hypertension, pulmonary vascular resistance (PVR) can be reduced by pulmonary thromboendarterectomy (PTE). In this study, long-term symptomatic and hemodynamic effects were investigated. Methods: Twenty-two patients (12 female, 10 male, mean age 40 years, preoperative NYHA functional class II/III/IV: n = 1/12/9) were re-evaluated 48‐72 months (mean 60 months) after surgery. In addition to clinical assessment, radiologic, hemodynamic and echocardiographic investigations were performed. Results: All patients reported a marked improvement of their clinical condition. At follow-up, 11 patients were identified as NYHA class I, 10 as NY…

Outcome of coronary endarterectomy

2000

Techniques and outcomes of pulmonary endarterectomy for chronic thromboembolic pulmonary hypertension.

2006

Cardiopulmonary function in patients with chronic thromboembolic pulmonary hypertension can almost be normalized by pulmonary endarterectomy. The procedure involves the removal of organized and incorporated fibrous obstructive tissue from the pulmonary arteries during circulatory arrest under deep hypothermia. Mortality rates reported for patients who have undergone pulmonary endarterectomy range from 4 to 24%. The operation is not an embolectomy but a true endarterectomy. After proximal intrapericardial pulmonary artery incision, the correct endarterectomy plane is established and circumferentially followed down to the lobar, segmental, and sometimes subsegmental pulmonary artery branches …

Rīks standartizēta formatējuma dokumentu veidošanai

2016

Standartizēti dokumenti tiek plaši lietoti gan akadēmiskajā, gan tehniskajā vidē, tomēr nav pieejami rīki, ar kuriem varētu pārbaudīt dokumentu atbilstību tehniska noformējuma standartam. Šī darba ietvaros tika izvirzīta hipotēze, ka ar RELAX NG shēmu var nodefinēt dokumentu noformējuma standartu, pēc kura būtu iespējams pārbaudīt ODF formāta dokumentus. Pēc praktiskās daļas pētījuma hipotēze tika apstiprināta – ar RELAX NG shēmu var uzdot prasības, kurus parasti definē noformējuma standarti. No šīs metodikas problēmām jāakcentē shēmas sarežģītā struktūra pat vienkāršu nosacījumu definēšanai.

Sténoses carotidiennes athéromateuses : causes fondamentales et conséquences cliniques

2014

The treatment of high-grade carotid stenosis is surgery combined with best medical treatment. We established since 2003, a prospective database including all patients hospitalized in our vascular surgery department for management of carotid stenosis. Since 2012, the clinical database was completed for the establishment of a biological database. We present here the method of setting up such a database, and the results of four original studies on the theme of "high-risk patient" for carotid surgery: the influence of renal function, of the delay between symptoms and surgery and of the contralateral carotid artery on outcome and the proposal of a prognostic score of intolerance to carotid clamp…

Severity of Asymptomatic Carotid Stenosis and Risk of Ipsilateral Hemispheric Ischaemic Events: Results from the ACSRS Study

2005

Objectives. This study determines the risk of ipsilateral ischaemic neurological events in relation to the degree of asymptomatic carotid stenosis and other risk factors. Methods. Patients (n = 1115) with asymptomatic internal carotid artery (ICA) stenosis greater than 50% in relation to the bulb diameter were followed up for a period of 6-84 (mean 37.1) months. Stenosis was graded using duplex, and clinical and biochemical risk factors were recorded. Results. The relationship between ICA stenosis and event rate is linear when stenosis is expressed by the ECST method, but S-shaped if expressed by the NASCET method. In addition to the ECST grade of stenosis (RR 1.6; 95% CI 1.21-2.15), histor…

Iekšējās kontroles sistēmas novērtējums un pilnveidošanas iespējas, ņemot vērā ISO sertifikācijas prasības, SIA “Kinetics Nail Systems”

2017

SIA ‘’Kinetics Nail Systems’’ 2017.gadā jāatjauno ISO sertifikāti, kas nozīmē iekšējās kontroles sistēmas pārvērtēšanu. Diplomdarba mērķis: pamatojoties uz SIA ‘’Kinetics Nail Systems’’ iekšējās kontroles sistēmas izpēti, izstrādāt priekšlikumus uzņēmuma iekšējās kontroles sistēmas pilnveidošanai, ņemot vērā ISO sertifikācijas prasības. Uzdevumi: izpētīt iekšējās kontroles teorētisko bāzi, izpētīt ISO sertifikācijas prasības, raksturot uzņēmuma saimniecisko darbību, analizēt iekšējās kontroles sistēmu, novērtēt trūkumus un izstrādāt priekšlikumus, ņemot vērā ISO sertifikāciju. Darba izstrādes rezultātā secināts: uzņēmumā izstrādāta iekšējās kontroles sistēma ar trūkumiem, ISO standarti ievē…