Fluid Electrolyte Flashcards

(43 cards)

1
Q

Intracellular Compartment ICF

A

Contains 2/3 of body water in healthy adults
Larger of the 2 compartments
Major Cation K+

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2
Q

Extracellular Compartment ECF

A

Contains 1/3 of body water
Contains all fluid outside the cells
Major cation : Na+

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3
Q

Capillary Hydrostatic Pressure

A

pushes water out of the capillary into the interstitial space

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4
Q

interstitial hydrostatic pressure

A

pushes water into the capillary

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5
Q

Capillary colloidal osmotic pressure

A

pulls water back into the capillary

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6
Q

Antidiuretic Hormone (ADH)

A

made in hypothalamus

affects kidneys to hold H2O

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7
Q

Aldosterone

A

affects kidneys and what is being excreted in urine

Retains sodium and H20 and excretes potassium

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8
Q

Renin Angiotensin System

A

a critical regulator of blood volume and systemic vascular resistance.

composed of three major compounds: renin, angiotensin II, and aldosterone

It can retains sodium and water
or
excrete potassium

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9
Q

Parathyroid Hormone

A

Monitors calcium levels and responds appropriately

  1. promotes release of calcium in bone
  2. helps further to activate vitamin d
  3. stimulates calcium and magnesium conservation by the kidneys while increasing phosphate exrection
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10
Q

Vitamin D

A

converted by kidneys into functional

essential to absorb calcium from GI tract

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11
Q

Calcitonin

A

inhibits calcium levels by preventing bone breakdown

tells the body not to give up calcium

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12
Q

Threshold Potential

A

critical level to which a membrane must be depolarlized to initiate an action potential

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13
Q

capillary permability

A

edema

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14
Q

Hypovolemia

A

exists when a net loss of sodium and water (eg, via skin, gut, or kidney) leads to ECF volume depletion.
IE : to little volume on board

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15
Q

Causes of Hypovolemia

A

inadequate fluid intake, excessive, GI Renal losses, excessive skin losses, third space losses

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16
Q

hypervolemia

A

to much fluid in your body

excessive sodium or fluid intake in relation to output

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17
Q

Causes of Hypervolemia

A

renal issues , heart failure, liver failure

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18
Q

Acid - Base is mainly concerned with 2 ions

A

hydrogen (H+)

Bicarbonate (HCO3-)

19
Q

Acids release

A

Acids release H+ when dissolved in water

20
Q

Bases bind

A

Bases bind free H+ in water

21
Q

Increased capillary hydrostatic pressure

A

Increased vascular volume

Increased venous obstruction

22
Q

Increased vascular volume =

A
Increased vascular volume =  how much pressure are in your vascular system 
heart dx
kidney dx
pregnancy 
venous obstruction
23
Q

Increased venous obstruction =

A

Increased venous obstruction = talking about exit, back up of traffic, they are fluid overloaded
liver dx
acute pulmonary edema
venous thrombosis (clot)

24
Q

Decreased capillary Osmotic (oncotic) Pressure edema

A

Decreased capillary Osmotic (oncotic) Pressure
increased loss of plasma proteins
typically have liver disease

25
types of edema
Increased capillary hydrostatic pressure edema Decreased capillary Osmotic (oncotic) Pressure edema Increased capillary permeability Obstructed lymphatic Drainage
26
Hyponatremia
low na causes a delay in the depolarization of membranes via Na-K pump causes : maybe due to diuretics ,vomiting ,D manifestations : lethargy, headache wt gain, edema
27
hypernatremia
``` na high causes water deprivation or water loss sodium increases oversecretion of aldosterone patients become twitchy manifestations : thirst, fever, dry mucous membranes, pulmonary edema ```
28
hypokalemia
low K causes : inadequate intake, excessive losses from GI and Renal, and ECF - ICF shift prolongs the rate of repolarization ; have S-T depression patient becomes sluggish lowers resting membrane potential manifestations : weakness, cardiac dysrhythmias, glucose intolerance
29
hyperkalemia
high K causes : decreased renal excretion , cellular injury, excessive rapid admin , shifts of K from ICF to ECF T- waves peak patients become twitchy raises resting membrane potential manifestations : neuromuscular excitability increases (cardiac arrest)
30
Calcium
important for bone health, muscle contraction, cardiac and skeletal muscle you must have calcium to clot / activates clotting factors affects threshold potential
31
Hypercalcemia
nerves are less about to fire the start line for threshold is farther ; these people end up being more sluggish causes : cancer , hyperthyroidism manifestations : muscle weakness / flacciditiy, behavior changes, slows down smooth muscle , kidney stones
32
Hypocalcemia
nerves fire more easily the start line for threshold potential is closer; these people tend to be twitchy causes : unable to mobilize Ca from bone, decreased intake or absorption, increased chelation manifestations : skeletal muscle issue (hyperactive), cardiovascular issues (sluggish), weakened bones, fail to respond to drugs
33
Magnesium
cofactor in multiple metabolic reactions | affects cardiac and smooth muscle function
34
hypomagnesemia
causes : alcoholism, insufficent intake, excessive losses, | effects : twitchy
35
hypermagnesemia
causes : renal failure or Mg containing medications | effects : skeletal muscle depression, muscle weakness, respiratory depression, bradycardia
36
compensatory mechanisms for pH balance
Chemical buffer systems immediate Respiratory Response (second line of defense) Renal Control
37
Chemical buffer systems
``` ** immediate** Bicarbonate buffer system proteins transcellular H+/K+ exchange systems bones serve as an additional source ```
38
Respiratory Response (second line of defense)
lungs regulate levels of CO2
39
Renal Control
``` final control has 3 major roles erection of H+ Production of HCO3- Retention of HCO3 ``` long term adjustment reabsorb acids and bases or excrete them in urine produce bicarb
40
respiratory acidosis
the body believes your not getting enough CO2 Manifestations : tachycardia and hypertension transitioning to bradycardia and hypotension, dyspnea, tachypnea, pale or cyanotic skin, anxiety, irritability, dysrhythmias causes : anything that can depress or limit RR ( because your holding onto CO2), sepsis, burns compensation occurs through elimination of acid or through reabsorption of base through kidneys
41
respiratory alkalosis
causes : hypoxemia stimulated by hyperventilation, salicylate toxicity ( aspirin overdose), increased RR, Manifestations increased protein binding of extracellular calcium ,tachypnea, tachycardia possible dysrhythmias compensations kidneys eliminate alkaline or base and pH returns to normal
42
metabolic acidosis
causes: excess production of hydrogen ion(DKA sepsis, burns) , inadequate elimination of hydrogen ion, inadequate production of HCO3 (renal failure, liver failure,dehydration) , or loss of bicarbonate (renal failure, pancreatitis , D) Compensation mechanisms : increase RR, decrease binding of calcium to proteins, depresses neuronal excitability, blood becomes more acidic , respiratory centers stimulated
43
metabolic alkalosis
causes : to much HCO3, oral ingestion of bases, acid loss manifestations : asymptomatic , tachycardia, hypoventilation, dysrhythmias, seizures compensation : short term : RR decreases, kidneys eliminate bicarb