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Hyperaemia - Wikipedia, the free encyclopedia Hyperaemia (AmE hyperemia) is the medical condition in which blood congests in a part of the body. The condition may be subdivided into active hyperaemia, in which blood collects in an organ due to increased blood flow, and passive hyperaemia, in which blood collects in an organ due to an obstruction in the outflowing veins. Functional hyperaemia is an increase in blood flow to a tissue due to the prescence of metabolites and a change in general conditions. en.wikipedia.org /wiki/Hyperaemia   (274 words)

Haemodynamic Changes: Part 1 Physiologic hyperaemia occurs following an increase in demand for blood as in increase blood flow to stomach and intestines during digestion, or congestion as in erectile tissues during stimulation. Acute local active hyperaemia occurs in inflammation, and is due to engorgement of the vascular bed following an increase in arteriolar blood flow into the area. In contrast to acute local active hyperaemia, the tissues involved are dark red in colour than bright red, as they are engorged with poorly oxygenated blood. www2.mozcom.com /~emcdvm/path03.html   (1029 words)

Treat advanced pathological cases by homeopathy - follow this advanced search   (Site not responding. Last check: 2007-11-05) Hyperaemia of the cord is characterized by more or less anaesthesia or numbness, preceded by sharp shooting pains often localized in the cord or radiating outward to the peripheral nerve. Myelitis may be distinguished from spinal hyperaemia by the greater intensity of the symptoms, and spinal meningitis by the severity of the symptoms, by the pains produced by movement of the paralyzed limbs, and by the tonic contraction of the muscles, especially those of the back. Colchicum should be used in cases of spinal hyperaemia caused by suppressed perspiration, or by getting the feet wet; numbness of the limbs, with pricking, twitching pains in the limbs and side, with sensation of lameness. www.homeocases.org /diseaseadvanced.asp?di=212   (475 words)

European Pressure Ulcer Advisory Panel It causes dilatation of the arterioles, capillaries and venules partly by the action of substances, the chief of which is nitric oxide, produced by the ischaemic endothelial (Lining) cells of the blood vessels and partly by reflex vasodilation. Reactive hyperaemia is the vital process by which the healthy body directs blood to whatever part needs it most at any time of the day and night. Reactive hyperaemia, which should be able to direct blood to areas of need is no longer able to work so that cells in these tissues die. www.epuap.org /bulletin3_1/page10.html   (2099 words)

CARDIOVASCULAR SYSTEM   (Site not responding. Last check: 2007-11-05) Blood flow and content in tissues varies under different physiological states (digestion - GI tract; exercise - muscles) and is also altered in disease (eg inflammation, strangulation, heart failure). Hyperaemia implies an increased blood content and would be associated with redness of a tissue. It could occur locally due to obstruction of venous drainage (eg due to strangulation/torsion, venous thrombosis or tumour pressure) or in a general way in congestive heart failure. www.bris.ac.uk /vetpath/tutorials/wwwcvs/congest.htm   (155 words)

A comparison of cutaneous vascular responses to transient pressure loading in smokers and nonsmokers   (Site not responding. Last check: 2007-11-05) We have further shown that the pressure-induced reactive hyperaemia response in smokers is significantly reduced and that this reduction is a result of an attenuation of the duration of the vasodilatory response. Thus, it seems likely that the failure to maintain a hyperaemia in our group of smoking volunteers is a result of an attenuation of the direct effect of NO on the microvasculature. Forearm reactive hyperaemia is not mediated by nitric oxide in healthy volunteers. www.vard.org /jour/03/40/3/noble.html   (3069 words)

Critical Care | Full text | Cutaneous vascular reactivity and flow motion response to vasopressin in advanced ... Reactive hyperaemia and oscillatory changes in the Doppler signal were measured during the 3 minutes before and after a 5-minute period of forearm ischaemia. This clinical study was conducted to evaluate prospectively the cutaneous microcirculatory response to a combined infusion of AVP and norepinephrine when compared with infusion of norepinephrine alone, using laser Doppler flowmetry in patients with advanced vasodilatory shock and severe postoperative multiple organ dysfunction syndrome (Table 1). Representing the proportion of recruitable capillaries, arterioles, and small arteries, reactive hyperaemia was found to be significantly attenuated in patients with shock [1,17,18]. ccforum.com /content/10/2/R40   (4051 words)

IngentaConnect Forelimb postischaemic reactive hyperaemia is impaired by hypoten... IngentaConnect Forelimb postischaemic reactive hyperaemia is impaired by hypoten... Forelimb postischaemic reactive hyperaemia is impaired by hypotensive low body negative pressure in healthy subjects In order to investigate that interaction non-invasively, we measured postischaemic reactive hyperaemia (RH) in the forelimb of eight healthy young men (22·7 ± 2·1 years) at rest and during two levels of sympathetic stimulation using low body negative pressure (LBNP −15 and −30 mmHg). www.ingentaconnect.com /content/bsc/cpf/2006/00000026/00000002/art00012   (334 words)

The Cardiac Society of Australia and New Zealand - 48th ASM Abstracts The most widely used approached to induce maximal coronary hyperaemia employ adenosine, administered either as a continuous intravenous (I.V.) infusion or intracoronary (I.C.) bolus. I.V. adenosine was administered as a continuous infusion at a rate of 140mg/Kg/min to achieve steady state hyperaemia. FFR was calculated as the ratio of the distal coronary pressure to the aortic pressure at hyperaemia. www.medeserv.com.au /csanz/abstracts/48abstracts/393.htm   (373 words)

Manual of Diagnostic Tests and Vaccines for Terrestrial Animals, 5th edition, 2004 Hyperaemia may extend to other parts of the body particularly the groin, axilla and perineum. The tongue may show intense hyperaemia and become oedematous, protrude from the mouth and, in severe cases become cyanotic. When sheep die as a result of acute BT disease, the lungs may show interalveolar hyperaemia, severe alveolar oedema and the bronchial tree may be filled with froth. www.oie.int /eng/normes/mmanual/A_00032.htm   (9407 words)

Netra Chikitsa - Sreedhareeyam   (Site not responding. Last check: 2007-11-05) Hyperaemia is the congestion of blood in the Netrapadalas. Active Hyperaemia may be caused due to the prolonged use of eyes, working in dim light or due to some accommodation problem of the eyes. When the occlusion of blood in Netrapadalas is severe, the serum is separated from the blood and distributed among retinal layers, thus swelling occur especially near the optic nerves. www.sreedhareeyam.com /Netrarogas.htm   (955 words)

Feature Review - WHAT DOES THE FUTURE HOLD FOR CONTACT LENS-INDUCED CORNEAL NEOVASCULARISATION? Limbal hyperaemia is not only a cosmetic problem for a contact lens patient, but can potentially be more serious as evidence suggests that limbal hyperaemia is a precursor to corneal neovascularisation. Results confirmed that the level of limbal hyperaemia induced by a hydrogel lens is directly correlated with the Dk/t of that lens. In summary, although the exact mechanism for limbal hyperaemia remains unclear, there is undoubtedly a relationship between limbal hyperaemia and the local availability of oxygen. www.siliconehydrogels.org /featured_review/featured_review_april_02.asp   (1162 words)

Effect of feed interval and feed type on splanchnic haemodynamics -- Lane et al. 79 (1): 49 -- Archives of Disease in ... In term infants the maximum response of the SMA is similarly dependent on feed composition. hyperaemias which tend to be of similar duration in human adults Contribution of luminal concentration of nutrients and osmolarity to postprandial intestinal hyperaemia in dogs. fn.bmjjournals.com /cgi/content/full/79/1/F49   (2688 words)

Early American Energy Medicine Sollux Lamp locally on glands to produce hyperaemia and assist resorption, followed by application of the Kromayer Lamp to glands under compression, 3rd degree erythema, repeated on subsidence. The good results of light therapy in these conditions are due to the efficacy of deep hyperaemia produced by luminous heat in all forms of inflammation, coupled with the effects of actinic rays on the sympathetic nervous system. The active hyperaemia which is thus produced opens the channels of drainage, and relieves stasis, whilst the temperature applied locally is over the survival limit for the gonococcus. www.meridianinstitute.com /eaem/hanovia/hanpart2.html   (12217 words)

Transient hyperaemic response to assess vascular reactivity of skin; effect of locally iontophoresed sodium ... in the forearm; hyperaemia was seen on the release of the tourniquet. Laser Doppler-recorded reactive hyperaemia in the forearm skin during the menstrual cycle. A comparison of the transient hyperemic response test and the static autoregulation test to assess graded impairment in cerebral autoregulation during propofol, desflurane, and nitrous oxide anesthesia. bja.oxfordjournals.org /cgi/content/full/89/2/265   (2764 words)

Effect of exercise training on endothelium-derived nitric oxide function in humans -- Green et al. 561 (1): 1 -- The ... responsible for exercise hyperaemia is derived from fundamental mediating hyperaemia in response to forearm handgrip exercise. Peak reactive hyperaemia provides an index of resistance vessel structure and the higher preferred limb data indicates that chronic or recurrent episodic changes in blood flow induce arterial remodelling in humans which enhances vasodilator capacity. jp.physoc.org /cgi/content/full/561/1/1   (8010 words)

Ophthacare Majority of patients responded right from the first week and major signs including conjunctival discharge and hyperaemia, were resolved within the first week of treatment. So the hyperaemia was resolved from an average of 1.96 to 0.9 on 7th day and to 0.2 on 14th day. The symptomatic relief in conjunctivitis, which was found to be significant in terms of inhibition of hyperaemia, reduction in conjunctival discharge, alleviation of conjunctival follicular hyperplasia and chemosis suggests the additional role of anti-inflammatory properties of various constituents. www.himalayahealthcare.com /products/ophthacare002.htm   (1121 words)

reactive hyperaemia and Buerger's test - General Practice Notebook   (Site not responding. Last check: 2007-11-05) Buerger's test is used to assess the adequacy of the arterial supply to the leg. The skin at first becomes blue, as blood is deoxygenated in its passage through the ischaemic tissue, and then red, due to reactive hyperaemia from post-hypoxic vasodilatation. Both legs are examined simultaneously as the changes are most obvious when one leg has a normal circulation. www.gpnotebook.co.uk /cache/1275461667.htm   (229 words)

Arthritis Research & Therapy | Full text | Microcirculation abnormalities in patients with fibromyalgia - measured ... The study group consisted of 10 women (54.0 ± 3.7 years of age) from the Outpatient Department in the Department of Rheumatology, University Hospital, Zurich, with primary FM classified in accordance with the criteria of the American College of Rheumatology [8]. After release of the cuff pressure, reactive hyperaemia was recorded at the four defined areas. The missing fast component of reactive hyperaemia in our FM population is presumably due to a higher sympathetic tonus, resulting in increased vasoconstriction; this increased vasoconstriction would explain both the significantly increased time to peak, especially at the lateral epicondyle – which is a tender point in FM – and the reduced density of vessels. arthritis-research.com /content/7/2/R209   (2713 words)

Adequate intracoronary adenosine doses to achieve maximum hyperaemia in coronary functional studies by pressure derived ... Adequate intracoronary adenosine doses to achieve maximum hyperaemia in coronary functional studies by pressure derived fractional flow reserve: a dose response study -- Lopez-Palop et al. Adequate intracoronary adenosine doses to achieve maximum hyperaemia in coronary functional studies by pressure derived fractional flow reserve: a dose response study FFR (when maximal hyperaemia is obtained) and called true FFR. heart.bmj.com /cgi/content/full/90/1/95   (1004 words)

Introduction Page for Cold Injury Independent Study In view of this, it is perhaps best to consider NFCI as part of a spectrum of diseases which are marked by ischaemia at the time of the primary injury, hyperaemia on cessation of that insult, and chronic neurological and vascular consequences – ‘ischaemia, hyperaemia, neuro-vascular’ or IHNV syndromes. The most overt signs of NFCI are paradoxically the hyperaemia, swelling, and pain which ensue soon after the extremity is rewarmed. Once the hyperaemia of stage three changes into the vasoconstriction of stage four, the administration of vasodilators may have a sounder rationale. www1.va.gov /OPH/COLD/keyrefnfci.cfm   (3196 words)

Korea-Us Aquaculture In flounders, external gross lesions of edwardsiellosis are darkening, abdominal distention, prolapsed rectum, exophthalmia, lens opacities and abscesses around eyes, and internal gross lesions of edwardsiellosis are milky or bloody ascites, abscess formation (liver, spleen and kidney), peritonitis and pale coloration of liver. Oxytetracycline, erythromycin are the most commonly used drugs, but since they are usually given orally, anorectic fish are not treated with antibiotics. A: The external signs, B: The internal signs, The gills are pale and the liver is hyperaemia, C:An opaque intestine in flounder larvae infected with V. www.lib.noaa.gov /korea/diseases/bacterial.html   (846 words)

e-Prints Soton - Maximum skin hyperaemia induced by local heating: possible mechanisms Background: Maximum skin hyperaemia (MH) induced by heating skin to 42°C is impaired in individuals at risk of diabetes and cardiovascular disease. The increase in skin blood flow was largely confined to the directly heated area, suggesting that the role of heat-induced activation of the axon reflex was small. Conclusion: NO, but not prostaglandins, histamine or an axon reflex, contributes to the increase in blood flow on heating and NO is also a component of the resolution of MH after heating. eprints.soton.ac.uk /27071   (337 words)

Silicone hydrogel piggyback lens systems for patients with high refractive errors No epithelial breaks or infections occurred but predictably PS developed hyperaemia and over a year some neovascularisation eventuated. Soon after PS commenced the silicone hydrogel piggyback lens system, his hyperaemia decreased, there was no further increase in neovascularisation and over time there was a significant decrease in the filling of pre-existing limbal blood vessels. His eyes remain free of hyperaemia and the limbal arcades are no longer engorged. www.siliconehydrogels.org /in_the_practice/nov_04.asp   (1264 words)

SLEEPLESSNESS / INSOMNIA Symptoms, Cure, Cause, Treatment, Homeopathy for SLEEPLESSNESS, INSOMNIA, Sleep Disorders It is probably our best remedy for insomnia due to cerebral hyperaemia; that is, it will be most often indicated, also after morphine which produces cerebral hyperaemia of a passive variety. Aconite comes in here, too, but with Aconite there is intense anxiety and restlessness, fear of disaster or death. Opium suits sleeplessness when the patient is sleepy but cannot get to sleep, is kept awake by hearing distinctly ordinary noises, such as the ticking of clocks and the crowing of cocks. www.hpathy.com /diseases/insomnia-sleeplessness-treatment-cure.asp   (1158 words)

Chapter9 This reaction is mainly caused by leukotrienes released by the leucocytes. Reactive hyperaemia is the increase in bloodflow following temporal vascular interruption of surgical or experimental character. Reactive hyperaemia (ie, increased limb bloodflow following experimental vascular interruption) is probably explained by the metabolic vascular control theory. forlag.fadl.dk /sample/ppaulev/chapter9/kap.9.htm   (7152 words)

Early American Manual Therapy This condition now results in a morbid metabolism, either constructive as growths, enlargements, and tumors; or to breaking down of tissue through retrograde metabolism, as in ulcerations. In almost all cases of pelvic disturbances leucorrhoea is a preceding condition, an unmistakable sign of hyperaemia, venous stasis, and decreased vitality of vascular walls. This fluid should be returned by nature's conduits, the veins, designed to carry back the products of oxidation in the tissues. www.meridianinstitute.com /eamt/files/riggs/rigappen.htm   (1311 words)

Effects of latanoprost and dipivefrin, alone or combined, on intraocular pressure and on blood-aqueous barrier ... A slight increase in conjunctival hyperaemia was observed when At baseline mean hyperaemia was graded between none and mild, and no change occurred Table 4 Hyperaemia score (mean (SEM)) obtained by comparing with a set of standard photographs from none (0) to severe (3) at baseline and after 2, 3, and 4 weeks' treatment for patients who started treatment with latanoprost (Lat/Dip) or dipivefrin (Dip/Lat) bjo.bmjjournals.com /cgi/content/full/82/4/404   (2152 words)

A single-tube mathematical model of reactive hyperaemia A mathematical model of reactive hyperaemia is developed using quasi-steady flow in a single tube to represent blood flow in the vascular bed. The role of the myogenic response during reactive hyperaemia is examined by suggesting a linear relationship between tube cross-sectional area S and pressure p, in which S decreases as p increases, thereby modelling the response of the smooth muscle in the blood vessel walls to increases in p which the myogenic mechanism proposes. However, this simple relationship, together with the equations of continuity and Poiseuille flow, lead to an unstable equation for p which is inconsistent with the known boundary conditions. stacks.iop.org /0031-9155/35/103   (306 words)

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