A nurse providing postoperative teaching to a client who has received a valve replacement discusses the importance of antibiotic prophylaxis prior to any dental or surgical procedure. The nurse understands that antibiotic prophylaxis prevents which of the following in these clients?
Sepsis
Otitis media
Deep vein thrombosis
Bacterial endocarditis
The Correct Answer is D
A. Sepsis is a general systemic infection that can arise from many sources but is not the specific concern addressed by prophylactic antibiotics in valve replacement patients.
B. Otitis media (middle ear infection) is unrelated to dental or surgical procedures and not a concern in valve replacement clients.
C. Deep vein thrombosis (DVT) is prevented with anticoagulants and mobility, not antibiotics.
D. Bacterial endocarditis is a serious infection of the heart's inner lining or valves. Clients with valve replacements are at increased risk, especially during procedures like dental work that may introduce bacteria into the bloodstream. Antibiotic prophylaxis is essential to prevent this potentially life-threatening condition.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Oliguria (low urine output) is an expected finding in hypovolemic shock due to decreased renal perfusion as blood is shunted to vital organs.
B. Hypertension is not expected; hypotension is more typical as circulating blood volume decreases.
C. Bradypnea is not common; tachypnea is expected as the body tries to compensate for decreased oxygen delivery.
D. Flushing of the skin is associated with early septic shock; in hypovolemic shock, the skin is typically cool, pale, and clammy due to peripheral vasoconstriction.
Correct Answer is B
Explanation
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.
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