Deck 25: Fluid, Electrolyte, and Acid–Base Balance

Question 1

A patient with healthy kidneys experiences metabolic alkalosis resulting from episodes of vomiting. The nurse takes into consideration that the kidneys can clear the alkaline substances and fully stabilize the patient's pH in approximately:

A) 3 to 5 minutes.
B) 12 to 24 hours.
C) 3 days.
D) 1 week.

Answer 1

3 days.

Question 2

The nurse is comparing sitting and standing vital signs for a patient who has been diagnosed with dehydration. The pulse rate has increased by 10 beats/min at 1 minute. The nurse then anticipates the blood pressure to show a(n) _____ mm Hg.

A) increase of 5
B) drop of 40
C) drop of 20
D) increase of 10

Answer 2

drop of 20

Question 3

The nurse assesses that the patient has developed abdominal pain, urinary retention, and confusion. The nurse concludes these signs are the result of an inadequate supply of:

A) calcium (Ca2+).
B) sodium (NA+).
C) phosphates (PO43).
D) potassium (K+).

Answer 3

potassium (K+).

Question 4

A patient who is experiencing severe diarrhea is losing excessive bicarbonate ions. This patient is at risk for developing:

A) respiratory alkalosis.
B) respiratory acidosis.
C) metabolic alkalosis.
D) metabolic acidosis.

Question 5

A patient with congestive heart failure has gained 1.1 pounds over the last 24 hours. The nurse is aware that this weight gain represents a fluid retention of _____ L.

A) 0.25
B) 0.5
C) 1.0
D) 2.0

Question 6

The patient who was admitted after vomiting for 3 days would show an abnormally low blood pressure because of a fluid shift from:

A) intracellular to the extracellular.
B) interstitial to intravascular.
C) intravascular to the interstitial.
D) interstitial to the intracellular.

Question 7

A patient has been identified as having a dietary deficiency of vitamin D. The nurse understands that this patient is also at risk for having a deficiency of:

A) calcium.
B) magnesium.
C) sodium.
D) potassium.

Question 8

A 10-month-old infant has had watery green stool for 2 days and refuses the bottle. The nurse is aware that the primary concern for this baby is:

A) metabolic acidosis.
B) metabolic alkalosis.
C) weight loss.
D) diaper rash.

Question 9

At the beginning of the shift, a patient's IV bag has 960 mL remaining. The IV fluid is running at 75 mL/hr. In 8 hours, there should be how many milliliters remaining in the IV bag?

A) 150
B) 360
C) 450
D) 600

Question 10

The nurse is aware that small ions such as glucose, oxygen, and carbon dioxide redistribute themselves through semi-permeable membranes by a process called:

A) diffusion.
B) osmosis.
C) blood pressure.
D) rehydration.

Question 11

The nurse explains that the dehydrated patient's urine is concentrated because:

A) renal tubules reabsorb more water and reduce urine output.
B) kidneys cease to function.
C) blood pressure drops.
D) the colon retains more fluid from the fecal waste.

Question 12

An isotonic state exists within a patient's body fluids when the solute concentration of:

A) interstitial fluid is less than the transcellular.
B) intracellular and extracellular fluid is equal.
C) intracellular fluid is greater than extracellular fluid.
D) extracellular fluid is lesser than intracellular fluid.

Question 13

The nurse is aware that an infant is more at risk for dehydration because the infant:

A) has kidneys that reabsorb water from the intravascular space.
B) has a larger body surface compared with body weight.
C) urinates more frequently.
D) has fat that absorbs water.

Question 14

The nurse is aware that a more dynamic process that moves molecules into cells regardless of their electrical charge or concentration in the cell is:

A) filtration.
B) osmosis.
C) active transport.
D) hydrostatic pressures.

Question 15

A patient with a history of severe chronic obstructive pulmonary disease (COPD) is most likely to have:

A) respiratory alkalosis.
B) respiratory acidosis.
C) metabolic alkalosis.
D) metabolic acidosis.

Question 16

A nurse gets a positive Chvostek's sign on a young woman with bulimia who has been giving herself frequent enemas containing phosphate. The nurse anticipates a laboratory finding of _____ mEq/L.

A) sodium 140
B) potassium 4.5
C) magnesium 1.6
D) calcium 6.5

Question 17

The nurse points out that non-electrolyte products of metabolism are as important to health as electrolytes. Non-electrolytes include:

A) magnesium.
B) amino acids.
C) calcium.
D) phosphates.

Question 18

An anxious adult patient is experiencing a respiratory rate of 40 breaths/min. The most appropriate intervention that the nurse could do is to instruct the patient to:

A) sit up.
B) lie down.
C) breathe through a re-breather mask.
D) pant with mouth open.

Question 19

For the accurate measurement to detect fluid retention, the nurse instructs the nursing assistants to measure the weight with the same scale:

A) each morning before breakfast after the patient has voided.
B) each day at noon before lunch, dressed in light clothing
C) in between meals, dressed in light clothing after voiding.
D) just before bedtime, while the patient is in a hospital gown or pajamas.

Question 20

A patient drank a cup of coffee, a half glass of orange juice, and half a carton of milk with breakfast. Using common equivalents of food containers as a guide, the nurse notes on the intake column of the intake and output sheet that the patient consumed _____ mL.

A) 360
B) 400
C) 420
D) 600

Question 21

The patient who is prescribed a diuretic for fluid-volume excess is discharged home. The patient verbalizes understanding of his disease process when he says:

A) "I can put catsup on my scrambled eggs."
B) "I can snack on salted popcorn."
C) "I will snack on raisins."
D) "I will avoid apricots."

Question 22

The nurse is aware that the patient who suffered a brain injury with cerebral edema will most likely receive a fluid that is:

A) isotonic.
B) hypertonic.
C) hypotonic.
D) enhanced with vitamin B.

Question 23

The nurse clarifies that the electrolytes include: (Select all that apply.)

A) sodium.
B) fatty acids.
C) potassium.
D) magnesium.
E) amino acids.
F) glucose.

Question 24

The nurse caring for a frail 92-year-old dehydrated patient should add to the plan of care the potential for

A) over-hydration related to excessive thirst.
B) diarrhea related to dehydration.
C) pulmonary congestion related to excessive fluid intake.
D) fall related to confusion.

Question 25

A patient with a serum potassium value of less than 3.5 mEq/L is _________.

Question 26

Based on the information provided, which of these measurements should be recorded on the output sheet? (Select all that apply.)

A) 250 mL nasogastric secretions
B) 200 mL diarrhea stool
C) 900 mL IV therapy
D) 650 mL urine from Foley catheter
E) 50 mL chest tube drainage
F) 240 mL milk

Question 27

The nurse clarifies that when electrolytes are in solution, they break up and become ______.

Question 28

The nurse explains that water as a constituent of the body has the functions of: (Select all that apply.)

A) transportation of nutrients.
B) blood pressure regulation.
C) heat regulation.
D) removing waste from the cells.
E) assists with digestion of protein.

Question 29

The physician orders fluid restriction for a patient with severe fluid-volume excess. When a patient is placed on a fluid restriction, the allowance of fluids should be:

A) greatest during the day shift.
B) greatest during the evening shift.
C) greatest during the night shift.
D) spaced in equal increments for all shifts.

Question 30

The nurse assessing a newly admitted patient with marked edema from severe congestive failure would anticipate that the patient would exhibit: (Select all that apply.)

A) a thready pulse.
B) concentrated urine.
C) hypertension.
D) weight gain.
E) crackles heard on auscultation.

Question 31

The nurse is caring for a patient for whom a dose of IV potassium has been ordered. Prior to hanging the potassium, the nurse should:

A) check urine output to be above 60 mL/hr.
B) check the dose with another licensed person.
C) confirm the IV fluid running is compatible with potassium.
D) start potassium with another venipuncture.