A nurse is reinforcing teaching to a graduating nurse about fluid volume deficit. Which of the following concepts about water balance should the nurse explain to the graduating nurse?
The intracellular space contains most of the body's water.
A fluid volume deficit inhibits baroreceptors.
When the body loses water, the intravascular space experiences the water loss.
A negative fluid balance occurs when the body takes in more water than the body needs.
The Correct Answer is C
A. The intracellular space contains most of the body's water: While it is true that the intracellular space holds the majority of the body's water, this statement does not specifically relate to the concept of fluid volume deficit or how the body responds to it.
B. A fluid volume deficit inhibits baroreceptors: In fact, fluid volume deficit activates baroreceptors due to reduced blood pressure, leading to compensatory mechanisms like increased heart rate and vasoconstriction to maintain blood pressure.
C. When the body loses water, the intravascular space experiences the water loss: This statement accurately describes the process during fluid volume deficit. The intravascular space loses water, leading to decreased blood volume, which can result in symptoms like hypotension and reduced tissue perfusion.
D. A negative fluid balance occurs when the body takes in more water than the body needs: This statement is incorrect; a negative fluid balance occurs when the body loses more water than it takes in, leading to dehydration or fluid volume deficit.
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Related Questions
Correct Answer is D
Explanation
A. Hyperventilation: Hyperventilation is more commonly associated with respiratory alkalosis or anxiety rather than hypokalemia. Hypokalemia does not typically cause hyperventilation.
B. Bradypnea: Bradypnea (slow breathing) is not a common finding in hypokalemia. Hypokalemia can affect muscle function, including respiratory muscles, but bradypnea is not a characteristic sign.
C. Syncope: While syncope (fainting) can occur due to various conditions, it is not a specific or common finding directly associated with hypokalemia. Hypokalemia mainly affects the heart and muscles.
D. U waves on electrocardiogram: U waves are a classic electrocardiogram (ECG) finding associated with hypokalemia. These waves appear after the T wave and are indicative of the electrolyte imbalance affecting cardiac repolarization.
Correct Answer is D
Explanation
A. Respiratory alkalosis: This condition is characterized by a high pH and low PaCO2. In this case, the pH is low and PaCO2 is high, indicating that respiratory alkalosis is not present.
B. Metabolic acidosis: Metabolic acidosis is indicated by a low pH and a low bicarbonate level. Here, the pH is low but the bicarbonate level is normal, so metabolic acidosis is not the primary diagnosis.
C. Metabolic alkalosis: This condition involves a high pH and elevated bicarbonate. The pH in this case is low, so metabolic alkalosis is not present.
D. Respiratory acidosis: Respiratory acidosis is indicated by a low pH and high PaCO2. The client's pH is 7.22 (acidic) and PaCO2 is 68 mm Hg (elevated), which is consistent with respiratory acidosis. The bicarbonate level is normal, indicating that there is no significant metabolic compensation yet.
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