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Permissive hypotension relies on the heart's ability to pump fluid through the body efficiently. Less intravascular fluid results in less fluid filling the heart (lower end diastolic volume) which results in a lower amount of volume pumped out of the heart (stroke volume). This is based on the Frank-Starling law of the heart.
Hypovolemia, also known as volume depletion or volume contraction, is a state of abnormally low extracellular fluid in the body. [1] This may be due to either a loss of both salt and water or a decrease in blood volume. [2] [3] Hypovolemia refers to the loss of extracellular fluid and should not be confused with dehydration. [4]
Valentino's syndrome is pain presenting in the right lower quadrant of the abdomen caused by a duodenal ulcer with perforation through the retroperitoneum. [1]It is named after Rudolph Valentino, an Italian actor, who presented with right lower quadrant pain in New York, which turned out to be a perforated peptic ulcer.
Fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges.
In the lungs, the extra fluid accumulates into the air sacs within the lung, causing difficulties in oxygen getting into the blood. This results in low blood oxygen levels and shortness of breath. In the arms and legs, the fluid accumulates in the tissues, causing swelling. This is most prominent in the legs due to the effects of gravity.
Throughout the body, dissolved compounds have an osmotic pressure. Because large plasma proteins cannot easily cross through the capillary walls, their effect on the osmotic pressure of the capillary interiors will, to some extent, balance out the tendency for fluid to leak out of the capillaries. In other words, the oncotic pressure tends to ...
The human body is approximately 60% water, a percentage which is also known as total body water. The total body water can be divided into two compartments called extracellular fluid (ECF) and intracellular fluid (ICF). The majority of the sodium in the body stays in the extracellular fluid compartment. [27]
Increasing fluid volume is associated with a decrease in matrix fiber density, and a lower exclusion volume. [ 8 ] [ 3 ] The total fluid volume of the interstitium during health is about 20% of body weight ( volume is not weight ) , but this space is dynamic and may change in volume and composition during immune responses and in conditions such ...