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  2. Hypovolemia - Wikipedia

    en.wikipedia.org/wiki/Hypovolemia

    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]

  3. Hypovolemic shock - Wikipedia

    en.wikipedia.org/wiki/Hypovolemic_shock

    Class 3: Volume loss from 30% to 40% of total blood volume, from 1500 mL to 2000 mL. A significant drop in blood pressure and changes in mental status occur. [3] Heart rate and respiratory rate are significantly elevated (more than 120 BPM). Urine output declines. Capillary refill is delayed. [3] Class 4: Volume loss over 40% of total blood volume.

  4. Thirst - Wikipedia

    en.wikipedia.org/wiki/Thirst

    This can be caused by blood loss, vomiting, and diarrhea. This loss of volume is problematic because if the total blood volume falls too low the heart cannot circulate blood effectively and the eventual result is hypovolemic shock. The vascular system responds by constricting blood vessels thereby creating a smaller volume for the blood to fill.

  5. Shock (circulatory) - Wikipedia

    en.wikipedia.org/wiki/Shock_(circulatory)

    Shock is the state of insufficient blood flow to the tissues of the body as a result of problems with the circulatory system.Initial symptoms of shock may include weakness, tachycardia, hyperventilation, sweating, anxiety, and increased thirst. [1]

  6. Hyponatremia - Wikipedia

    en.wikipedia.org/wiki/Hyponatremia

    Hyponatremia or hyponatraemia is a low concentration of sodium in the blood. [4] It is generally defined as a sodium concentration of less than 135 mmol/L (135 mEq/L), with severe hyponatremia being below 120 mEq/L. [3] [8] Symptoms can be absent, mild or severe.

  7. Fluid balance - Wikipedia

    en.wikipedia.org/wiki/Fluid_balance

    The common advice to drink 8 glasses (1,900 mL or 64 US fl oz) of plain water per day is not scientific; thirst is a better guide for how much water to drink than is a specific, fixed amount. [4] Americans aged 21 and older, on average, drink 1,043 mL (36.7 imp fl oz; 35.3 US fl oz) of drinking water a day, and 95% drink less than 2,958 mL (104 ...

  8. Intravascular volume status - Wikipedia

    en.wikipedia.org/wiki/Intravascular_volume_status

    Intravascular volume depletion is divided into three types based on the blood sodium level: Isonatremic (normal blood sodium levels) Example: a child with diarrhea, because both water and sodium are lost in diarrhea. Hyponatremic (abnormally low blood sodium levels). Example: a child with diarrhea who has been given tap water to replete ...

  9. Hypotonic hyponatremia - Wikipedia

    en.wikipedia.org/wiki/Hypotonic_hyponatremia

    Hypoosmolar hyponatremia is a condition where hyponatremia is associated with a low plasma osmolality. [1] The term "hypotonic hyponatremia" is also sometimes used.[2]When the plasma osmolarity is low, the extracellular fluid volume status may be in one of three states: low volume, normal volume, or high volume.

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