نتایج جستجو برای: arterial venous fistulae
تعداد نتایج: 189541 فیلتر نتایج به سال:
Objective: Ear replantation poses a significant technical challenge even for the skilled microsurgeon. Many ear amputations result from avulsion and thus have damaged and often diminutive vessels with a paucity of veins. Artery-only replantation is an option for ear salvage, but little is published on the clinical course and appearance after this procedure. Methods: A subtotal ear replantation ...
BACKGROUND AND PURPOSE Stroke-related tissue pressure increase in the core and penumbra determines regional cerebral perfusion pressure (rCPP) defined as a difference between local inflow pressure and venous or tissue pressure, whichever is higher. We previously showed that venous pressure reduction below the pressure in the core causes blood flow diversion-cerebral venous steal. Now we investi...
OBJECTIVE To analyze the usefulness of transvaginal color Doppler assessment of venous flow in the differential diagnosis of adnexal masses. MATERIAL AND METHODS Ninety-one consecutive patients (mean age: 46.6 years, range: 16-81 years) diagnosed as having an adnexal mass were evaluated by transvaginal color Doppler sonography prior to surgery. Color Doppler was used to detect and analyze the...
Comparative studies of coagulation factors in arterial and venous blood were made in 14 normal subjects and in 4 patients with arterial or ventricular septal defect. No difference was found at the level of prothrombin, factor V, factor VII/X, retraction, factor XIII, and platelet count. Fibrinogen and factor VIII were significantly low in the venous blood. The platelet count was higher in the c...
BACKGROUND Point of care (POC) glucose meters are routinely used to monitor glucose levels for patients on tight glycemic control therapy. We determined if glucose values were different for a POC glucose meter as compared to the main clinical laboratory for medical intensive care unit patients on a tight glycemic protocol and whether the site of blood sampling had a significant impact on glucos...
Multi-point velocity encoding for simultaneous assessment of arterial, venous and cerebrospinal flow
Introduction: The acquisition of arterial and venous blood flow to the cranium as well as flow of cerebrospinal fluid (CSF) in the spinal canal are the main input parameters for modeling cerebrospinal dynamics [1]. Phase-Contrast (PC) MRI has been used to measure input and output boundary conditions to populate model parameters. There are, however, limitations as to the accuracy of PC-MRI when ...
AIM There is growing evidence that venous thrombotic and arterial atherosclerotic diseases are interrelated. This presumption is supported by the similar ethiopathogenesis, risk factors and clinical appearance of the two diseases. We investigated whether the prevalence of preclinical indicators of atherosclerosis is higher in patients with spontaneous venous thrombosis than in healthy subjects....
Background and Purpose—Stroke-related tissue pressure increase in the core and penumbra determines regional cerebral perfusion pressure (rCPP) defined as a difference between local inflow pressure and venous or tissue pressure, whichever is higher. We previously showed that venous pressure reduction below the pressure in the core causes blood flow diversion–cerebral venous steal. Now we investi...
OBJECTIVE This study aims to determine the extent of correlation of arterial and venous pH with a view to identifying whether venous samples can be used as an alternative to arterial values in the clinical management of selected patients in the emergency department. METHODS This prospective study of patients who were deemed by their treating doctor to require an arterial blood gas analysis to...
BACKGROUND True arterial blood samples are essential in making clinical decisions for respiratory patients. Previous studies using only the Portex Pro-Vent arterial sampler have shown a significant difference between arterial and venous filling times. The goal of this study was to determine whether there is a statistically significant difference between sampler filling times measured at a norma...
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