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Chapter 25: Water, Electrolytes, and Acid-Base Balance Flashcards | StudBud
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Chapter 25: Water, Electrolytes, and Acid-Base Balance
Chapter 25: Water, Electrolytes, and Acid-Base Balance
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The Human Body in Health and Illness, 7th Edition
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Questions
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Answers
1
Which of the following is most likely to occur when output is less than intake? (buzz)
dehydration
hypovolemia
polyuria
edema
2
Which of the following is descriptive of normal saline?
0.9% sodium chloride
contains albumin
distilled water
highly acidic
3
Bicarbonate (HCO3-)is considered an anion because it?
carries a negative charge
contains carbon
contains oxygen
contains hydrogen
4
Which of the following is not a function of the lungs?
secretion of aldosterone®ulation of Na+
excretion of carbon dioxide
regulation of blood pH
oxygenation of blood
5
Retention of which ion causes water retention and edema formation?
sodium
hydrogen
potassium
bicarbonate
6
Water and chloride usually follow the movement of which cation?
sodium
potassium
albumin
bicarbonate
7
A patient is ventilating at a rate of 8to10 resp./min having been heavily medicated for pain. Which is true? Patient may
experiencing diuresis
experiencing kussmaul resp.
develop a resp. acidosis
likely to develop a metabolic alkalosis
8
Poor skin turgor is most indicative of?
acidosis
cystitis
dehydration
edema
9
In a patient who hypoventilates b/c of a chronic resp. disease such as emphysema what is most likely to happen?
acidosis
increase in plasma pH
kussmaul resp.
decrease in plasma concentration of hydrogen ion
10
what does urinary specific gravity measure?
the buffering capacity of the blood
plasma potassium
hydration status of the body
plasma H+ concentration
11
Which of the following can be defined as an H+ donor?
acid
bicarbonate
tincture
ion
12
A drug that decreases the synthesis of aldosterone also?
causes hypernatremia
decreases blood pressure
causes hypokalemia
does all of the above
13
Respiratory rate is most sensitive to the effects of which ion?
Cl-
H+
Na+
K+
14
Which of the following is an ex. of the metabolic acidosis with a respiratory compensation?
persistent vomiting and hypoventilation
ketoacidosis and kussmaul respirations
morphine overdose and diuresis
hypocalcemic tetany and hyperventilation
15
Which of the following is a buffer pair?
ADH,ANF
PTH, aldosterone
sodium, potassium
HCO3-,H2CO3
16
Most body water is located within which space?
intracellular
interstitial
intravascular
transcellular
17
K+
is the chief extracellular cation
is a cation
is an acid
neutralizes H+
18
A changing of pH from 7.40 to 7.25
is indicative of alkalosis
in within normal limits
is indicative of expanded blood volume
reflects an increase in the amount of H+ in the blood
19
The determination of daily weights is used to monitor?
concentration of plasma protein
diuretic therapy
serum K+
pH
20
Hyperventilation is most likely to cause?
acidosis
a blood pH higher than 7.45
diuresis
edema
21
Which hormone stimulates the kidneys to reabsorb calcium and to excrete phosphate?
ADH
erythropoietin
aldosterone
parathyroid hormone
22
Which of the following best indicates the role of albumin in water balance?
enhances the renal excretion of K+
blocks the renal reabsorption of Na+
"plugs up" capillary pores keeping water in plasma
maintains plasma oncotic pressure
23
Which ion determines the resting membrane potential of nerve and muscle?
potassium
sodium
hydrogen
calcium
24
Which ion determines pH?
sodium
potassium
hydrogen
bicarbonate
25
Which of the following is most likely to develop in an anxious hyperventilating patient?
respiratory acidosis
alkalosis
a decrease in plasma pH
ketoacidosis
26
Excess diuresis is most likely to cause?
edema
acidosis
overhydration
blood volume depletion
27
Which hormone causes the kidneys to retain sodium and to excrete potassium?
aldosterone
erythropoietin
ADH
PTH
28
Which of the following is most likely to occur when output exceeds intake?
diuresis
polyuria
dehydration
hematuria
29
Aldosterone
causes Na+ excretion
causes K+ reabsorption
is released in response to hypovolemia
determines the permeability of the collecting duct to water
30
More than 99% of which cation is stored in the bones and teeth?
hydrogen
chloride
potassium
calcium
31
Most diuretics increase urine production by blocking the effects of which cation?
sodium
bicarbonate
calcium
chloride
32
Kaliuresis refers to the urinary loss of?
sodium
potassium
water
albumin
33
Which fluid compartment is located between the cells and is also called tissue fluid?
plasma
transcellular
lymph
interstitial
34
Hypoventilation is most likely to cause?
renal excretion of bicarbonate
hypokalemia
acidosis
edema
35
Which of the following is NOT true of extracellular fluid?
there is more interstitial fluid than intravascular fluid
most body water is extracellular
transcellular fluid is extracellular
plasma is extracellular fluid
36
Which of the following acts as a base?
OH-
calcium ion
gastric juice
H+
37
Which of the following forms the greatest extracellular fluid compartment?
interstitial
plasma
lymph
transcellular
38
Which of the following is characteristic of acidosis?
urinary excretion of bicarbonate
a decrease in the concentration of hydrogen ion in the blood
pH of 7.55
pH less than 7.35
39
A patient w/ pulmonary edema is receiving furosemide (lasix) a diuretic. He has lost 6.6lb over 48hr period. whatistrue?
the loss of 6.6lb causes "tenting"
his urinary output has decreased
he has lost water weight
he will become hyperkalemic if lasix is continued
40
Which of the following is true about interstitial fluid, plasma, lymph and transcellular fluid?
protein-free fluids
contain no electrolytes
pH less than 6(highly acidic)
classified as extracellular
41
Metabolic acidosis such as diabetic ketoacidosis is most likely to cause?
the renal retention of H+
the renal excretion of bicarbonate
hypovenntilation
kussmaul respirations
42
Which of the following is (are) true of Na+?
all of the above
is regulated by the ADH
helps regulate extracellular volume
is the chief extracellular anion
43
Hyperkalemia refers to a increase in the blood levels of which ion?
bicarbonate
calcium
potassium
hydrogen
44
Which of the following is the chief extracellular cation?
calcium
potassium
chloride
sodium
45
Which of the following is most likely to cause acidosis?
renal loss of albumin
accumulation of plasma H+
persistent vomiting
diuresis
46
Which condition in caused by vomiting stomach contents?
hypernatremia & blood volume expansion
alkalosis
hyperkalemia
hypocalcemic tetany