HRF may mean Human Relief Foundation An International charity based in the UK working to help and improve the peoples living, health and education. Hostage Rescue Force Egyptian police unit responsible for hostage situations and counter terrorism operations Homeland Reserve Forces Hotell och Restaurang Facket, the Swedish Hotel and Restaurant Workers Union Haemodynamic response function Human Rights Foundation Croatian Radio Festival Hrvatski radijski festival , Croatian Radio Festival disambig sv HRF ... more details
mapping , for example the associated haemodynamic changes. The initial motivation for EEG fMRI ... allows the study of their haemodynamic correlates. The method can reveal haemodynamic changes ..., which helps to investigate, correlated haemodynamic changes in brain during seizures. The clinical ... more details
orphan date December 2007 The HEART scan is a rapid assessment tool for identifying haemodynamically significant cardiac abnormalities in the critical care setting. It is similar to the Focused assessment with sonography for trauma scan in concept, although it is directed at the heart rather than the abdomen. Often called a Calcium Scan it provides a score that can be used to determine the risk of a coronary event. Unlike an EKG which would mostly show the results of past heart attacks and Thallium Stress Test which only shows up advanced blockages of 70 or more . It is an excellent way to determine if a person has Coronary Arterial Disease. Aims The aims of the HEART scan are to assess Detect Cardiovascular Disease Haemodynamic status eg hypovolaemia Heart valve lesions Pericardial effusion Views Used The views used by a HEART scan are the same as or a subset of the full transthoracic views. Views are obtained from up to three windows where possible Parasternal Window Apical Window Subcostal Window Positive Result A positive result on a HEART scan will indicate that there is a clinically significant abnormality in cardiac status. This test is graded using the Agatston Score . It is recommended for men over 35 and women over 45 with a history of smoking or family heart disease. Also for people with elevated cholesterol, high blood pressure, or obesity. See also University Of Melbourne http www.healthocrates.com Coronary Calcium Scan 20 Coronary Calcium Scan External links http heartscanblog.blogspot.com http heartscanblog.blogspot.com http www.trackyourplaque.com trackyourplaque web site devoted to people trying to reduce their calcium scores http www.heartweb.com.au heartweb document.aspx?docid 46c5947b 7a96 4fc5 9965 bd1a8e1a3cf1&delay 0 HEART scan workshops http www.pharmacology.unimelb.edu.au echocourse Postgraduate Diploma in Perioperative and Critical Care Echocardiogrpahy http www.mitral.com heart scan.shtml More Information about Heart Scans via HealthwoRx C ... more details
. Acute Haemodynamic Effects of Ajmaline and Prajmaline in Patients with Coronary Heart Disease. European .... Sullivan, and J. C. P. Crick. Acute Haemodynamic Effects of Ajmaline and Prajmaline in Patients with Coronary .... Acute Haemodynamic Effects of Ajmaline and Prajmaline in Patients with Coronary Heart Disease. European .... Crick. Acute Haemodynamic Effects of Ajmaline and Prajmaline in Patients with Coronary Heart Disease ... Haemodynamic Effects of Ajmaline and Prajmaline in Patients with Coronary Heart Disease. European ... when given Prajmaline. ref name Sow Sowton, E., I. D. Sullivan, and J. C. P. Crick. Acute Haemodynamic ... more details
the underlying basic medical science and technology for hemodynamics haemodynamic Medical ultrasonography ... School, London. These early devices were used for haemodynamic assessment of normal volunteers ... more details
BLP sources date September 2011 Nikos Logothetis born 1950 in Istanbul is Greeks Greek a biologist and neuroscientist . Logothetis is director of the department Physiology of Cognitive Processes at the Max Planck Institute for Biological Cybernetics in T bingen . He studied mathematics and music in Athens and completed a doctorate in biology in Munich with Ernst P ppel . His research interests lie in exploring the neural mechanisms of visual perception. ref cite web url http www.kyb.mpg.de nc employee details nikos.html 2 title Nikos Logothetis first last work kyb.mpg.de year 2011 accessdate 7 September 2011 ref According to Logothetis, in order to understand a system, a description of it is necessary at all levels . As a result, intracortical cell recording and also modeling and Medical imaging imaging is conducted at all levels in his department. Therefore, in addition to functional MRI functional magnetic resonance imaging , in vivo spectroscopy is also used, and the working group is researching smart contrast agents SCA in order to make functional imaging useful for effects other than haemodynamics haemodynamic response . Logothetis has made significant discoveries, such as finding out that the Blood oxygen level dependent BOLD response is connected to brain activity at a neuronal level. These findings are essential for correct interpretation of measurements with functional magnetic resonance imaging fMRI . Logothetis is one of the 2003 winners of the Louis Jeantet Prize for Medicine . Publications Logothetis, N. K. & Sheinberg, DL Visual object recognition . Annu. Rev. Neurosci. 19 1996 577 621 Randolph Blake & Nikos K. Logothetis Visual competition . Nature Reviews Neuroscience 3 2001 1 11 Logothetis NK, Pauls J, Augath M, Trinath T, Oeltermann A Neuro Physiological investigation of the basis of the fMRI signal . Nature 412 2001 150 157 On the neural basis of the BOLD fMRI signal . Philos. Trans R. Soc. London Ser. B. 357 2002 1003 1037 The underpinning of the ... more details
. The results showed that this original valve exhibited the best haemodynamic performance, at rest and during ... haemodynamic investigations in patients with Ionescu Shiley pericardial xenograft In Cooley D A, Pluth ... of the valve used. Haemodynamic Investigations and In Vitro Testing of Valves The Ionescu ... qualities. Haemodynamic studies by several authors ref name Tandon ref name Pavie Pavie A, Phoulevangong ... al Postoperative haemodynamic evaluation of the Ionescu Shiley prosthesis in the small aortic root ... Inc. 1982 Irvine, California ref ref name Silverton Tandon A P, Silverton N P, Ionescu M I Haemodynamic ..., pages 23 34 ref ref name Smith Smith D R, Tandon A P 1985 Haemodynamic comparison between ..., 106 ref ref name becker Becker R M,Strom J, Irishman N,et al 1980 Haemodynamic performance of the Ionescu ... patients with pericardial valves demonstrated that in all respects the haemodynamic function of this valve ... mechanical prostheses. The haemodynamic results reported by other investigators are very ... haemodynamic investigations at rest and during exercise in 110 patients. There were 51 ... were subjected to multiple, sequential haemodynamic studies at rest and during exercise at the following ... In order to demonstrate visually the reasons for the great haemodynamic difference between the pericardial ..., the excellent haemodynamic function of the pericardial valve is one of its great advantages and sets ... is similar. In a simplified way, the main difference between these two types of valves is the haemodynamic ... function, with the exception of haemodynamic and hydraulic measurements which are scientifically ... more details
facts were established by the use of such valves. The haemodynamic performance in both mitral and aortic ... , New York,pages 163 225, ref and after having demonstrated its excellent haemodynamic performance ... content 69 688.full.pdf . ref Ionescu also created the concept of performing multiple sequential haemodynamic ... Tandon A P, Smith D R, Mary D A S, Ionescu M I, 1977 , Sequetial Haemodynamic Studies in Patients ... haemodynamic investigations. Single ventricle. Mountain climbing. http marianionionescublog.blogspot.com ... more details
. Haemodynamic and cardio respiratory compromise Hyperdynamic circulation , with peripheral vasodilator ... to contribute in haemodynamic compromise. ref cite journal author Harry R, Auzinger G, Wendon ... more details
Hemoencephalography HEG is a relatively new neurofeedback technique within the field of neurotherapy. Neurofeedback, a specific form of biofeedback , is based on the idea that human beings can consciously alter their brain function through training sessions in which they attempt to change the signal generated by their brain and measured via some neurological feedback mechanism. By so doing, participants increase cerebral blood flow to a specified region of the brain, consequently increasing brain activity and performance on tasks involving that region of the brain. ref name Tinius Tinius,T. 2004 . New Developments in Blood Flow Hemoencephalography. Hawthorne Press. ref . Overview Both approaches to hemoencephalography, near infrared and passive infrared, are indirect measures of neural activity based on neurovascular coupling. Neurovascular coupling is the mechanism by which cerebral blood flow is matched to metabolic activity. When the a region of the cortex is used in a specific cognitive task, neuronal activity in that region increases, consequently increasing local metabolic rate. To keep up with the nutritional and waste removal demands of a higher metabolic rate, cerebral blood flow to the cortical area in use must increase proportionally. Along with the increase in flow, hemoglobin molecules in the blood, which are responsible for the transport and transference of oxygen to tissue throughout the body, must increase the amount of oxygen they deliver to the activated region of the cortex, resulting in a greater local blood oxygenation level. This is also referred to as the haemodynamic response . Near Infrared NIR Developed by the godfather of hemoencephalography, Dr. Hershel Toomim, near infrared hemoencephalography measures changes in the local oxygenation level of the blood. Similar to functional magnetic resonance imaging , which uses changes in the magnetic properties of blood resulting from oxygenation to form an image of brain activity, NIR utilizes the ... more details
Infobox Disease Name Epidemic dropsy Image Sanguinarine structure.png Caption Sanguinarine in argemone oil is the toxic etiological agent of epidemic dropsy DiseasesDB 32789 ICD10 ICD10 T 62 8 t 51 MeSH Argemone oil Pubmed Sanguinarine, Epidemic dropsy Epidemic dropsy is a form of edema of extremities due to Poison intoxication with Argemone mexicana Mexican prickly poppy . ref name pmid10621875 cite journal author Sharma, B. D. Malhotra, S. Bhatia, V. Rathee, M. title Epidemic dropsy in India journal Postgraduate Medical Journal volume 75 issue 889 pages 657 661 year 1999 month November pmid 10621875 pmc 1741391 doi 10.1136 pgmj.75.889.657 url http pmj.bmj.com cgi pmidlookup?view long&pmid 10621875 ref ref name pmid9189656 cite journal last1 Das first1 M. last2 Khanna first2 S. K. title Clinicoepidemiological, Toxicological, and Safety Evaluation Studies on Argemone Oil journal Critical Reviews in Toxicology volume 27 issue 3 pages 273 297 year 1997 pmid 9189656 doi 10.3109 10408449709089896 ref Epidemic dropsy is a clinical state resulting from use of edible oils adulterated with Argemone mexicana oil. Sanguinarine and dehydrosanguinarine are two major toxic alkaloids of Argemone oil, which cause widespread capillary dilatation, proliferation and increased capillary permeability. When mustard oil is adulterated deliberately as in most cases or accidentally with argemone oil, proteinuria specifically loss of human serum albumin albumin occurs, with a resultant edema as would occur in nephrotic syndrome . Other symptoms are bilateral pitting edema of extremities, headache , nausea , loose bowels, erythema and dyspnea breathlessness . Leakage of the protein rich plasma component into the extracellular compartment leads to the formation of oedema. The haemodynamic consequences of this vascular dilatation and permeability lead to a state of relative hypovolemia with a constant stimulus for fluid and salt conservation by the kidneys. Illness begins with gastroenteric sy ... more details
Image NeutrophilerAktion.png 200px thumb right Neutrophils extravasate from blood vessels to the site of tissue injury or infection during the innate immune response Leukocyte extravasation is the movement of leukocytes out of the circulatory system , towards the site of tissue damage or infection. This process forms part of the innate immune response , involving the recruitment of non specific leukocytes. Monocytes also use this process in the absence of infection or tissue damage during their development into macrophages . Overview Leukocyte extravasation occurs mainly in post capillary venules , where haemodynamic shear stress shear forces are minimised. This process can be understood in several steps, outlined below as chemoattraction , rolling adhesion , tight adhesion and endothelial transmigration . It has been demonstrated that leukocyte recruitment is halted whenever any of these steps is suppressed. Chemoattraction Upon recognition of and activation by pathogens , resident macrophages in the affected tissue release cytokines such as IL 1 , Tumor necrosis factor alpha TNF and chemokines . IL 1 and TNF cause the endothelial cells of blood vessels near the site of infection to express cellular adhesion molecules , including selectins . Circulating leukocytes are localised towards the site of injury or infection due to the presence of chemokines. Rolling adhesion Like velcro , carbohydrate ligands on the circulating leukocytes bind to selectin molecules on the inner wall of the vessel, with marginal Dissociation constant Protein ligand binding affinity . This causes the leukocytes to slow down and begin rolling along the inner surface of the vessel wall. During this rolling motion, transitory bonds are formed and broken between selectins and their ligands . Tight adhesion At the same time, chemokines released by macrophages activate the rolling leukocytes and cause surface integrin molecules to switch from the default low affinity state to a high affinity st ... more details
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