• body
  • Thus, the findings raise the possibility that, in addition to diuretic and dietary interventions to reduce fluid volumes, other measures to limit overnight rostral fluid translocation, for example, reverse Trendelenburg position or modest levels of lower body negative pressure or thigh cuff inflation, could serve as alternative or adjunctive therapies for OSA (and possibly nondipper status). (ahajournals.org)
  • The Fluid Shifts Before, During, and After Prolonged Space Flight and Their Association with Intracranial Pressure and Visual Impairment (Fluid Shifts) investigation measures how much fluid shifts from the lower body to the upper body, in or out of cells and blood vessels, and determines the impact these shifts have on fluid pressure in the head, changes in vision and eye structures. (nasa.gov)
  • Lower body negative pressure is being investigated for its ability to mitigate some of the effects of the space flight-induced fluid shift. (nasa.gov)
  • On Earth, gravity pulls bodily fluids downward to the lower parts of the body, especially the legs. (dailygazette.com)
  • More fluid in the upper part of the body manifests itself with bulging neck veins, sinus congestion and a general puffiness in the face (facial edema). (dailygazette.com)
  • Once out of orbit, fluids immediately begin to shift back to the lower body and some astronauts are unable to stand for more than ten minutes without assistance because of feeling light-headed. (dailygazette.com)
  • The mechanism of increased cardiac output during pregnancy may be caused by fluid overload (over 5 L of total body water gained. (wikibooks.org)
  • Normally the body maintains a balance of fluid in tissues by ensuring that the same of amount of water entering the body also leaves it. (encyclopedia.com)
  • The circulatory system transports fluid within the body via its network of blood vessels. (encyclopedia.com)
  • The lymphatic system (a network of channels in the body that carry lymph, a colorless fluid containing white blood cells to fight infection) also absorbs and transports this fluid. (encyclopedia.com)
  • This fluid imbalance can cause mild to severe swelling in one or more parts of the body. (encyclopedia.com)
  • When excess salt is taken in, the body dilutes it by retaining fluid. (encyclopedia.com)
  • Additional symptoms include fluid redistribution (causing the "moon-face" appearance typical in pictures of astronauts experiencing weightlessness), loss of body mass, nasal congestion, sleep disturbance, and excess flatulence. (wikipedia.org)
  • Living in this type of environment impacts the body in three important ways: loss of proprioception, changes in fluid distribution, and deterioration of the musculoskeletal system. (wikipedia.org)
  • Hydrostatic pressure on the surface of the body due to head out immersion in water causes negative pressure breathing which shifts blood into the intrathoracic circulation. (wikipedia.org)
  • The third extracellular compartment, the transcellular, consists of those spaces in the body where fluid does not normally collect in larger amounts, or where any significant fluid collection is physiologically nonfunctional. (wikipedia.org)
  • He first documented the shift and loss of fluid changes in body posture size and shape, including increase in height and the rapid loss of muscle strength and mass in space flight. (wikipedia.org)
  • volume
  • Collectively, the observations support a more unified and coherent picture in which fluid volume expansion contributes to both treatment-resistant hypertension and OSA. (ahajournals.org)
  • The changes in Starling forces lead to net loss of fluid volume from the lower extremities and a net gain of fluid volume in the neck and upper airways. (ahajournals.org)
  • Based on the authors' report and the studies they cite, the fluid volume translocated rostrally overnight is a key factor determining the severity of OSA. (ahajournals.org)
  • Although the authors did not provide details of diuretic dose and subclass or report plasma renin activity, these variables would be of interest in future studies of fluid volume expansion and rostral fluid shifts in patients with treatment-resistant hypertension and OSA. (ahajournals.org)
  • 7,8 Thus, it would be of interest to determine the contribution of volume expansion and rostral fluid shifts in nondipper or reverse-dipper status, the relationship to plasma renin activity and OSA, and the potential return to a more normal dipping status with reduction in fluid volume and rostral fluid shifts. (ahajournals.org)
  • The aim of this study was to evaluate the diagnostic performance of the following methods to predict fluid responsiveness in ARDS patients under protective ventilation in the prone position: cardiac index variation during a Trendelenburg maneuver, cardiac index variation during an end-expiratory occlusion test, and both pulse pressure variation and change in pulse pressure variation from baseline during a tidal volume challenge by increasing tidal volume (VT) to 8 ml. (readbyqxmd.com)
  • venous
  • When a patient with treatment-resistant hypertension assumes the recumbent position, which is typical for sleep, there is a large shift in gravitational forces, which reduces capillary and venous pressures in the lower extremities and increases them in the neck and pharyngeal areas. (ahajournals.org)
  • changes
  • The authors, in fact, document that the measured changes in overnight (recumbent) fluid displacement from the legs account for ≈56% of the variance in the apnea-hypopnea index. (ahajournals.org)
  • Changes in vision and eye structure are thought to be the result of prolonged exposure to space flight-induced headward fluid shifts and elevated intracranial pressure. (nasa.gov)
  • The Fluid Shifts experiment investigates the causes for severe and lasting physical changes to astronaut's eyes. (spaceref.com)
  • Symptoms
  • More total time dialyzing, shorter periods between treatments and the fact that fluid removal speeds can be lower (thus reducing the symptoms resulting from rapid ultrafiltration), accounts for the advantages of these schedules over conventional ones. (wikipedia.org)
  • significantly
  • Fluid replacement during meal breaks was not significantly increased above fluid replacement rates during work time, with implications for the duration and spacing of meal breaks on long shifts. (bmj.com)
  • observation
  • 4,5 Nevertheless, the importance of the observation of greater overnight rostral fluid shift and severity of OSA in patients with treatment-resistant hypertension is not diminished. (ahajournals.org)
  • blood
  • Blood pressure in space is not maintained the same way it is on Earth because of the fluid shifts. (dailygazette.com)
  • When these muscles are not used, blood can collect in the veins, making it difficult for fluid to move from tissues back into the vessels. (encyclopedia.com)
  • Warm temperatures cause the blood vessels to expand, making it easier for fluid to cross into surrounding tissues. (encyclopedia.com)
  • Certain drugs, such as steroids, hormone replacements, nonsteroidal anti-inflammatory drugs (NSAIDs), and some blood pressure medications may affect how fast fluid leaves blood vessels. (encyclopedia.com)
  • Head-out immersion causes a blood shift from the limbs and into the thorax. (wikipedia.org)
  • This fluid is not static, but is continually being refreshed by the blood capillaries and recollected by lymphatic capillaries. (wikipedia.org)
  • The main intravascular fluid in mammals is blood, a complex mixture with elements of a suspension (blood cells), colloid (globulins), and solutes (glucose and ions). (wikipedia.org)
  • The blood represents both the intracellular compartment (the fluid inside the blood cells) and the extracellular compartment (the blood plasma). (wikipedia.org)
  • All of the aforementioned fluids are produced by active cellular processes working with blood plasma as the raw material, and they are all more or less similar to blood plasma except for certain modifications tailored to their function. (wikipedia.org)
  • For example, the cerebrospinal fluid is made by various cells of the CNS, mostly the ependymal cells, from blood plasma. (wikipedia.org)
  • apparent
  • it is apparent that one of these powers… has the 'fluid' quality of being directable to almost any problem. (wikipedia.org)
  • intake
  • Average environmental conditions were severe (WBGT 30.9°C (SD 2.0°C), range 25.7-35.2°C). Fluid intake averaged 0.8 l/h during exposure (SD 0.3 l/h, range 0.3-1.5 l/h). (bmj.com)
  • pressure
  • Increased fluid in the cranium can increase pressure on the eyeballs, changing their shape and possible affecting vision. (dailygazette.com)
  • As for the fluid around the engine where the dip stick is it is possible this is the transmission pressure control solenoid or the transmission fluid pump at fault causing to much pressure blowing back through the dip stick or the transmission vent is plugged. (justanswer.com)
  • Caused by pressure from fluid exudate. (brainscape.com)
  • researchers
  • Some researchers have linked the theory of fluid and crystallized intelligence to Piaget's conception of operative intelligence and learning. (wikipedia.org)
  • dietary
  • We explored the assembly of intestinal microbiota in healthy male participants during the randomized crossover design of run-in (5 day) and experimental phases (21-day normoxic bed rest (NBR), hypoxic bed rest (HBR) and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, with balanced fluid and dietary intakes, controlled circadian rhythm, microbial ambiental burden and 24/7 medical surveillance. (readbyqxmd.com)
  • decrease
  • Third, factors that increase central and/or total fluid volumes worsen OSA or its surrogate markers, whereas interventions that decrease fluid volumes improve OSA and treatment-resistant hypertension. (ahajournals.org)
  • ordinary
  • In humans, the intracellular compartment contains on average about 28 litres of fluid, and under ordinary circumstances remains in osmotic equilibrium. (wikipedia.org)
  • respectively
  • In psychology, fluid and crystallized intelligence (respectively abbreviated Gf and Gc) are factors of general intelligence, originally identified by Raymond Cattell. (wikipedia.org)
  • measures
  • For example, the Wechsler Adult Intelligence Scale (WAIS) measures fluid intelligence on the performance scale and crystallized intelligence on the verbal scale. (wikipedia.org)
  • Impaired performance on some tasks measuring fluid intelligence and enhanced performance on others are found on some measures in individuals with autism spectrum disorders including Asperger syndrome. (wikipedia.org)
  • periods
  • Fluid replacement was measured during the working periods and during the meal breaks. (bmj.com)