Which of the following statements best describes the pathophysiologic rationale for shock?
Circulating blood volume is decreased.
Cells lack an adequate blood supply and are deprived of oxygen and nutrients.
Hemorrhage occurs as a result of trauma.
Blood is shunted from vital organs to peripheral areas of the body.
The Correct Answer is B
A. Circulating blood volume is decreased – This is true specifically in hypovolemic shock, but it does not apply to all types of shock (e.g., septic or cardiogenic shock).
B. Cells lack an adequate blood supply and are deprived of oxygen and nutrients – This is the most accurate and comprehensive description of the pathophysiology of shock. Shock is defined as a state of cellular and tissue hypoperfusion, regardless of the underlying cause.
C. Hemorrhage occurs as a result of trauma – While hemorrhage can cause hypovolemic shock, it is not the universal cause of all types of shock.
D. Blood is shunted from vital organs to peripheral areas of the body – The opposite is true in shock: blood is typically shunted away from peripheral tissues to preserve perfusion to vital organs like the brain and heart.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Ventricular tachycardia is less commonly triggered by suctioning.
B. Sinus tachycardia may occur but is not the most common arrhythmia during suctioning.
C. Supraventricular tachycardia is not typically associated with suctioning.
D. Sinus bradycardia is the most common arrhythmia caused by vagal stimulation during endotracheal suctioning.
Correct Answer is D
Explanation
A. Hands should be washed with warm water, not hot, to prevent skin irritation.
B. The recommended handwashing duration is at least 20 seconds.
C. The faucet should be turned off using a paper towel or elbow to avoid recontamination.
D. Holding hands below the elbows allows water to flow downward, preventing contamination from the elbows back onto the hands.
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