Search results for " failure"
showing 10 items of 1828 documents
Freehand three-dimensional assessment of left ventricular volumes and ejection fraction with ultrasound contrast agent LK565
2005
Accurate assessment of left ventricular function by determining left ventricular volumes and ejection fraction is important in evaluating the prognoses of patients with heart failure. Two-dimensional (2D) echocardiography suffers from low correlation with reference methods like ventriculography. Three-dimensionally (3D) assessed data have been proved to have better conformity. Endocardial border delineation remains a problem, however, especially in patients with suboptimal recordings. Few data exist on 3D-echocardiographic volumetry with ultrasound contrast agents (UCAs). We evaluated the second-generation UCA LK565 for its boundary-tracing capacities in freehand 3D echocardiography in a ph…
Changes in Adrenoceptor and GRK Expression in Patients With Chronic Pulmonary Regurgitation.
2019
INTRODUCTION AND OBJECTIVES Pulmonary regurgitation (PR) is a frequent complication after repair of congenital heart disease. Lymphocyte expression of adrenoceptors (β1 and β2) and kinases (GRK2, GRK3, and GRK5) reflects the neurohumoral changes that occur in heart failure (HF). The main objective of this study was to describe the gene expression of these molecules in circulating lymphocytes in patients with severe PR. METHODS A prospective study was conducted to analyze lymphocyte expression of these molecules in patients with severe PR and compare it with expression in healthy controls and patients with advanced HF. RESULTS We studied 35 patients with severe PR, 22 healthy controls, and 1…
Biomechanical Determinants of Right Ventricular Failure in Pulmonary Hypertension.
2018
Pulmonary hypertension (PH) is a disease characterized by progressive adverse remodeling of the distal pulmonary arteries, resulting in elevated pulmonary vascular resistance and load pressure on the right ventricle (RV), ultimately leading to RV failure. Invasive hemodynamic testing is the gold standard for diagnosing PH and guiding patient therapy. We hypothesized that lumped-parameter and biventricular finite-element (FE) modeling may lead to noninvasive predictions of both PH-related hemodynamic and biomechanical parameters that induce PH. We created patient-specific biventricular FE models that characterize the biomechanical response of the heart and coupled them with a lumped-paramete…
Sympathetic Activity and Blood Pressure Pattern in Autosomal Dominant Polycystic Kidney Disease Hypertensives
1998
To study the potential role of sympathetic activity in the pathogenesis of arterial hypertension associated with autosomal dominant polycystic kidney disease (ADPKD) and to analyze its relationship with 24-hour blood pressure pattern, plasma catecholamines and 24-hour ambulatory blood pressure monitoring were evaluated in 30 ADPKD hypertensive patients (of which 17 without and 13 with renal failure) and in 50 essential hypertensives. The groups were matched for sex, body mass index, known duration of hypertension, and clinic blood pressure. Plasma catecholamines, determined in resting position, were higher in ADPKD patients without renal failure than in essential hypertensives. Nighttime di…
Use of Biologics to Treat Relapsing and/or Refractory Eosinophilic Granulomatosis With Polyangiitis: Data From a European Collaborative Study.
2021
OBJECTIVE To describe the efficacy and safety of biologics for the treatment of eosinophilic granulomatosis with polyangiitis (EGPA). METHODS A retrospective European collaborative study was conducted in patients with EGPA who received treatment with biologics for refractory and/or relapsing disease. RESULTS Among the 147 patients with EGPA included in the study, 63 received rituximab (RTX), 51 received mepolizumab (MEPO), and 33 received omalizumab (OMA). At the time of inclusion, the median Birmingham Vasculitis Activity Score (BVAS) was 8.5 (interquartile range [IQR] 5-13) in the RTX group, while the median BVAS in the OMA group was 2 (IQR 1-4.5) and the median BVAS in the MEPO group was…
Sex difference and intra-operative tidal volume: Insights from the LAS VEGAS study
2021
BACKGROUND: One key element of lung-protective ventilation is the use of a low tidal volume (V(T)). A sex difference in use of low tidal volume ventilation (LTVV) has been described in critically ill ICU patients. OBJECTIVES: The aim of this study was to determine whether a sex difference in use of LTVV also exists in operating room patients, and if present what factors drive this difference. DESIGN, PATIENTS AND SETTING: This is a posthoc analysis of LAS VEGAS, a 1-week worldwide observational study in adults requiring intra-operative ventilation during general anaesthesia for surgery in 146 hospitals in 29 countries. MAIN OUTCOME MEASURES: Women and men were compared with respect to use o…
CD3+ lymphocytosis in the peri-implant membrane of 222 loosened joint endoprostheses depends on the tribological pairing.
2017
Background and purpose — The most frequent cause of arthroplasty failure is aseptic loosening—often induced by particles. Abrasion material triggers inflammatory reactions with lymphocytic infiltration and the formation of synovial-like interface membranes (SLIM) in the bone–implant interface. We analyzed CD3 quantities in SLIM depending on articulating materials and possible influences of proven material allergies on CD3 quantities. Patients and methods — 222 SLIM probes were obtained from revision surgeries of loosened hip and knee arthroplasties. SLIM cases were categorized according to the SLIM-consensus classification and to the particle algorithm. The CD3 quantities were analyzed immu…
Inflammatory implant periapical lesion: etiology, diagnosis, and treatment--presentation of 7 cases.
2008
Purpose To investigate implant periapical lesions, and to describe their treatment. The hypothesis of this evaluation is that implant periapical lesions are disorders of the area surrounding the apex of a dental implant, and that their etiology can be multifactorial (ie, vascular impairment, vascular ischemia, overheating of bone during drilling, and implant surface contamination). The diagnosis is based on the clinical manifestations and x-ray findings. The x-ray findings usually involve a periapical radiotransparency. Materials and Methods Seven patients with implant periapical lesions (3 in the upper jaw, and 4 in the mandible) after implant placement are described. All patients reported…
Double-blind cross-over study with oral alpha-ketoacids in patients with chronic renal failure.
1980
In 15 ambulatory patients with renal insufficiency (creatinine clearance, 9.9 +/- 3.0 ml/min) the effect of oral supplementation with alpha-ketoacids has been compared with that of placebo. The protein intake amounted to 0.55 g protein per kilogram body weight of high biological value, as estimated by dietary recordings. After a control period of 3 months the patients received, in a double-blind study, 1.05 g alpha-ketoacids/10 kg body weight per day or a placebo for 6 weeks with a subsequent cross-over. Fasting blood samples were analyzed at 3-week intervals for routine laboratory parameters and 17 proteins. Anthropometric and clinical data have been recorded every 3 weeks. While therapy w…
Association of elevated serum triglyceride levels with a more severe course of acute pancreatitis: Cohort analysis of 1457 patients.
2019
Previous publications have reported an association between hypertriglyceridemia (HTG) and severity of acute pancreatitis, but this relationship remains somewhat controversial.To evaluate the outcome of acute pancreatitis according to serum triglyceride levels on admission.Retrospective analysis of prospectively collected data, which included all consecutive cases of acute pancreatitis admitted to a tertiary hospital (January 2002-December 2014). Acute pancreatitis patients were classified into 3 groups based on serum triglyceride levels (mg/dl) measured within 48 h from admission: normal triglycerides-mild HTG (200); moderate HTG (200-749); severe HTG (≥750). Primary outcomes were the diffe…