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Filter by:The purpose of this study is to compare the performance of a prototype optical coherence tomography (OCT) machine with currently available high resolution OCT machines.
Cardiogenic shock, the most severe form of acute heart failure, is a critical situation where the body cells lack of oxygen because of cardiac dysfunction. The failure of pharmacological therapy to maintain adequate perfusion has led to attempts to improve the circulation by the use of mechanical circulatory support devices. Peripheral veno-arterial support (PVA-ECMO) is the most frequently used device. It consists of extracorporeal circulatory support. Venous blood is aspirated via the right atrium and reinjected into the descending aorta via the femoral artery. As a consequence of this by-pass, pulmonary artery flow and residual left ventricle ejection can fall drastically until zero in the most severe patients. A minimal transpulmonary blood flow is crucial to avoid left heart cavities and pulmonary artery and left heart cavities thrombosis. The gold standard technique to monitor transpulmonary blood flow is right-heart cavities catheterism (Swan-Ganz catheter) but it represents major limits: invasive technique, limited duration of utilization because of septic risk, physical limit of flow measurement (under 1 liter/minute). End-tidal pressure carbon dioxide (Pet CO2) monitoring (or capnography) is a routine and non-invasive measure in ventilated patients. Previous studies have shown that changes in PetCO2 can measure changes in cardiac output in anesthetized patients and that PetCO2 is a useful index of pulmonary artery blood flow during separation from cardiopulmonary bypass. The aim of this study is to demonstrate that PetCO2 is correlated to transpulmonary blood flow in patients under PVA-ECMO and that exhaled CO2 can provide an on-line, continuous, and noninvasive monitor of residual outflow from the heart during PVA-ECMO.
This study will investigate whether BI and technology extenders are feasible and acceptable for female patients at a reproductive health center (ages 18-29).
To evaluate the efficacy of autologous platelet-rich plasma eye drops (E-PRP) for the treatment of chronic ocular surface syndrome (OSS) following laser in situ keratomileusis (LASIK).
ABSTRACT BACKGROUND The existence of the retinohypothalamic pathway suggests that light may influence autonomic outflow activity. The objective of this study was to examine the correlation between the estimated iris muscle sympathetic‒parasympathetic area (IRIS) ratio and the sympathetic-parasympathetic ratio (low frequency [LF]/high frequency [HF] ratio). METHODS The study population consisted of 200 females and 200 males (mean age, 32.4 ± 7.1 years). The IRIS ratio was determined from digital photographs of the iris in a computer setting. The LF/HF ratio was determined from records of heart rate variability obtained using a Holter implementation.
The objective of the study is to demonstrate the superiority of 0.1% octenidine mouthwash (Octenidin Mundspüllösung, OML) to placebo (PLAC) in the inhibition of plaque formation. The study will consist of a 14-day screening period and a 5-day treatment period.
Evaluation of the sensitivity of the Merz Cheeks Fullness Assessment Scale (MCFAS) and the clinical relevance of aesthetically pleasing outcomes by detecting changes in cheek appearance after Belotero® Volume Lidocaine injection. The safety objectives include the identification and description of adverse events (AEs), adverse device effects (ADEs), serious adverse events (SAEs), serious adverse device effects (SADEs), anticipated serious adverse device effects (ASADEs) and unanticipated adverse device effects (UADEs) during the course of the study. Additionally, common treatment site responses (CTRs) will be assessed.
The aim of the investigators' study is to evaluate the mucosa-elevating capacity and clinical safety of Sodium Alginate (SA) mixed with Calcium Lactate in assisting Endoscopic Submucosal Dissection/Endoscopic Mucosal Resection.
It has been hypothesized that potential effects of laser Nd: YAG laser posterior capsulotomy may affect macular pigment as well as choroidal thickness, macular thickness and anterior chamber parameters, so it was aimed to investigate possible effects of Nd: YAG laser posterior capsulotomy on macular pigment optical density, choroidal thickness, macular thickness and anterior chamber parameters in cases with posterior capsule opacification in this study.
Blood copeptin will be measured during the routine treatment of neonates, children and adolescents on the Intensive Care Unit of the University Children`s Hospital Zurich at different time points (admission, 12, 24, 48, 96, 168 hours after admission). These values will be primarily analysed for their variability and their association with arterial hypotension. Blood samples will be drawn together with otherwise medically indicated blood withdrawals to avoid extra harm. Further, copeptin values will be compared to clinical and vital parameters, all of them open-label available during clinical routine. Copeptin`s predictive value for patients` outcome will be analysed as secondary outcome.