Search results for "FLUID"
showing 10 items of 5513 documents
Energy spectral density as valid parameter to compare postural control between subjects with nonspecific chronic low back pain vs healthy subjects : …
2021
Abstract Background Nonspecific chronic low back pain (NSCLBP) is one of the most common and frequent health problems. Objetive to compare postural control (i.e. center of pressure (CoP) displacement and energy spectral density (ESD)) using technological devices (accelerometers and pressure platform) between subjects with NSCLBP and healthy subjects. Methods A cross-sectional case-control study was conducted. Observational study (STROBE). The final sample consisted of 60 subjects (30 NSCLBP subjects and 30 healthy subjects). Triaxial accelerometer and pressure platform were used in order to obtain ESD and CoP displacement measurements during four balance tasks (i.e. with and without vision …
Seasonal Variations on the Cortisol Concentration of the Subretinal Fluid in Rhegmatogenous Retinal Detachment
1981
Probes of the subretinal fluid were obtained from 115 nonselected retinal detachments, operated on during the period from November 19, 1973 to December 20, 1974. All patients had no known endocrine abnormalities and had not ever received topical or systemic corticosteroid therapy. Subretinal fluid Cortisol was determined by competitive protein binding analysis. A statistically significant increase in mean subretinal fluid Cortisol concentration was found for the winter season (3.3 µg/100 ml), as compared with the summer months (1.5 µg/100 ml). This finding sharply contrasts with the seasonal incidence of the idiopathic retinal detachments which reaches its maximum in the months June to Augu…
Relationship of Cerebral Blood Flow Disturbances with Brain Oedema Formation
1993
Brain oedema is an important factor which compromises maintenance of the cerebral blood flow. Conversely, primary blood flow disturbances are leading to brain oedema. The mechanisms underlying blood flow impairment by brain oedema are associated with an increased regional tissue pressure in proportion to the degree of water accumulation in the parenchyma. The release of vasoactive mediator compounds might be considered in addition. Primary disturbances of the cerebral blood flow, such as focal or global cerebral ischaemia are leading to an increased cerebral water content. A decrease of the cerebral blood flow to ca. 40% of normal or below has been found to result in the development of brai…
Kinder und Jugendliche mit neurogener Blasenfunktionsst�rung
2004
After the failure of conservative treatment in patients with neurogenic bladders, urinary diversion is a viable compromise between the urologist's concerns and the patient's desire, as the upper urinary tract can be protected in the long-term and high continence rates can be provided. This can be achieved with an acceptable complication rate. Our indications for orthotopic bladder augmentation or substitution involve patients with a good orthopedic condition and mobility, who find it easy to perform CISC through the urethra. A continent umbilical stoma offers a good alternative in obese, immobile or wheelchair bound patients. The serous lined extramural tunnel technique has proven to be sup…
Polymorphonuclear leucocyte rheology and cytosolic Ca2+ content after activation in chronic renal failure
2001
SUMMARY: We evaluated polymorphonuclear leucocyte (PMN) flow properties in patients with clinically stable chronic renal failure (CRF) and in control subjects at baseline and after activation with 4-phorbol 12-myristate 13-acetate (PMA) and N-formyl-methionyl-leucyl-phenylalanine (fMLP). Initial relative flow rate (IRFR) and clogging particles (CPs) were obtained using the St. George's Filtrometer, and PMN membrane fluidity was assessed by marking PMNs with 1-(4-(trimethylamino)phenyl)-6-phenyl-1,3,5-hexatriene (TMA-DPH). PMN cytosolic Ca2+ concentration was determined by marking PMNs with Fura 2-AM. At baseline, CRF patients showed a significant increase only in PMN cytosolic Ca2+ content.…
Diagnosis, treatment, and analysis of long-term outcomes in idiopathic normal-pressure hydrocephalus
2007
To the Editor:We read with interest the article by McGirt et al. (9) entitled“Diagnosis, Treatment, and Analysis of Long-term Outcomes inIdiopathic Normal Pressure Hydrocephalus.” The authors con-clude that gait impairment is the primary symptom that inde-pendently predicted improvement after shunting. The studyincluded 132 patients, 129 (98%) of whom had gait impairmentas a feature. We would like to comment on this particular selec-tion criterion, as well as improvements in the Mini Mental StateExamination (MMSE) as the sole measure of postoperative cog-nitive improvement.One of the inclusion criteria for this study was presentationwith two or more features of the classic triad. Thus, the …
Chronic cerebrospinal venous insufficiency: current perspectives
2014
This review summarizes the research to date on chronic cerebrospinal venous insufficiency (CCSVI). CCSVI was initially defined as a clinical syndrome comprising stenoses of the internal jugular and/or azygos veins, characterized by collateral venous outflows and reduced cerebral blood flow, and was found primarily in patients with multiple sclerosis. However, the published evidence on CCSVI is very discordant. Catheter venography studies gave a regular picture, with the majority of patients with multiple sclerosis presenting with demonstrable outflow abnormalities in the veins draining the central nervous system. The prevalence of these lesions was over 50%, and even higher (about 90%) when…
Cuantificación y tratamiento de la congestión en insuficiencia cardíaca: una visión clínica y fisiopatológica
2022
Renal sodium and water retention with resulting extracellular volume expansion and redistribution are hallmark features of heart failure syndromes. However, congestion assessment, monitoring, and treatment represent a real challenge in daily clinical practice. This document reviewed historical and contemporary evidence of available methods for determining volume status and discuss pharmacological aspects and pathophysiological principles that underlie diuretic use.
Aulogous fibrin sealant (Vivostat(®)) in the neurosurgical practice: Part II: Vertebro-spinal procedures.
2015
Background Epidural hematomas, cerebrospinal fluid fistula, and spinal infections are challenging postoperative complications following vertebro-spinal procedures. We report our preliminary results using autologous fibrin sealant as both fibrin glue and a hemostatic during these operations. Methods Prospectively, between January 2013 and March 2015, 68 patients received an autologous fibrin sealant prepared with the Vivostat(®) system applied epidurally to provide hemostasis and to seal the dura. The surgical technique, time to bleeding control, and associated complications were recorded. Results Spinal procedures were performed in 68 patients utilizing autologous fibrin glue/Vivostat(®) to…
Potential Involvement of Impaired Venous Outflow from the Brain in Neurodegeneration: Lessons Learned from the Research on Chronic Cerebrospinal Veno…
2019
About 10 years ago, the so-called chronic cerebrospinal venous insufficiency syndrome was discovered. This clinical entity, which is associated with extracranial venous abnormalities that impair venous outflow from the brain, was initially found exclusively in multiple sclerosis patients. Currently, we know that such venous lesions can also be revealed in other neurological pathologies, including Alzheimer’s and Parkinson’s diseases. Although direct causative role of chronic cerebrospinal venous insufficiency in these neurological diseases still remains elusive, in this paper, we suggest that perhaps an abnormal venous drainage of the brain affects functioning of the glymphatic system, whi…