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QUESTIONS AND CORRECT DETAILED
ANSWER [GRADE A+]
It is true that when insulin is administered:
a. The Na+, K+-ATPase pump is turned off.
b. Potassium is moved out of muscle cells.
c. The liver increases its potassium levels.
d. Glucose transport is impaired. - correct answer ANS: C
Insulin contributes to the regulation of plasma potassium levels by stimulating the
Na+, K+-ATPase pump, thereby promoting the movement of potassium simultaneously
into the liver and muscle cells with glucose transport after eating. The other options do
not accurately describe the effect of insulin administration.
The existence of hyperkalemia is likely to result in which changes to a person's
electrocardiogram (ECG)?
a. Flattened U waves
c. Depressed ST segments
b. Peaked T waves
d. Peaked P waves - correct answer ANS: B
Observed ECG changes include peaked T waves, prolonged PR interval, and absent P
wave with a widened QRS complex. The other options are not related to hyperkalemia.
Dehydration can cause which result? (Select all that apply.)
a. Moist mucous membranes
, NURS 6320 Final Ch 2, 3, 8, 9 (Latest
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QUESTIONS AND CORRECT DETAILED
ANSWER [GRADE A+]
b. Weak pulses
c. Tachycardia
d. Polyuria
e. Weight loss - correct answer ANS: B, C, E
Significant water deficit is demonstrated by symptoms of dehydration that include
headache, thirst, dry skin and mucous membranes, elevated temperature, weight loss,
and decreased or concentrated urine (with the exception of diabetes insipidus). Skin
turgor may be normal or decreased. Symptoms of hypovolemia include tachycardia,
weak pulses, and postural hypotension
Causes of hypocalcemia include: (Select all that apply.)
a. Repeated blood administration
b. Pancreatitis
c. Decreased reabsorption of calcium
d. Hyperparathyroidism
e. Kidney stones - correct answer ANS: A, B Blood transfusions are a common cause
of hypocalcemia because the citrate solution used in storing whole blood binds with
calcium. Pancreatitis causes a release of lipases into soft-tissue spaces;
consequently, the free fatty acids that are formed bind calcium, causing a decrease in
ionized calcium. The other options are not recognized causes of hypocalcemia.
The electrolyte imbalance called hyponatremia exhibits which clinical manifestations?
(Select all that apply.)
a. Headache
, NURS 6320 Final Ch 2, 3, 8, 9 (Latest
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QUESTIONS AND CORRECT DETAILED
ANSWER [GRADE A+]
b. Seizures
c. Paranoia
d. Confusion
e. Lethargy - correct answer ANS: A, B, D, E
Behavioral and neurologic changes characteristic of hyponatremia include lethargy,
headache, confusion, apprehension, seizures, and coma. Paranoia is not associated
with hyponatremia.
The electrolyte imbalance hypercalcemia exhibits which clinical manifestations?
(Select all that apply.)
a. Diarrhea
b. Calcium based kidney stones
c. ECG showing narrow T waves
d. Lethargy
e. Bradycardia - correct answer ANS: B, D, E
Fatigue, weakness, lethargy, anorexia, nausea, and constipation are common.
Behavioral changes may occur. Impaired renal function frequently develops, and
kidney stones form as precipitates of calcium salts. A shortened QT segment and
depressed widened T waves also may be observed on the ECG, with bradycardia and
varying degrees of heart block
The electrolyte imbalance hypokalemia exhibits which clinical manifestations? (Select
all that apply.)
, NURS 6320 Final Ch 2, 3, 8, 9 (Latest
Update )
QUESTIONS AND CORRECT DETAILED
ANSWER [GRADE A+]
a. Paralytic ileus
b. Sinus bradycardia
c. Atrioventricular block
d. Dry mucous membranes
e. Tetany - correct answer ANS: A, B, C
A variety of dysrhythmias may occur, including sinus bradycardia, atrioventricular
block, paroxysmal atrial tachycardia, and paralytic ileus. The other options are not
related to hypokalemia.
An imbalance of potassium can produce which dysfunctions? (Select all that apply.)
a. Weakness skeletal muscles
b. Cardiac dysrhythmias
c. Smooth muscle atony
d. Visual impairment
e. Hearing loss - correct answer ANS: A, B, C
Symptoms of hyperkalemia vary, but common characteristics are muscle weakness or
paralysis and dysrhythmias with changes in the ECG. A wide range of metabolic
dysfunctions may result from hypokalemia. Neuromuscular excitability is decreased,
causing skeletal muscle weakness, smooth muscle atony, and cardiac dysrhythmias
Which type of cell adaptation occurs when normal columnar ciliated epithelial cells of
the bronchial lining have been replaced by stratified squamous epithelial cells?