Difficulty: Medium
Average Score: 62%
Simulated
The nurse is teaching a class on valve replacements. Which statement identifies a disadvantage of having a biological tissue valve replacement?
Correct answer
D
Rationale
Biological valves (D) have limited durability, often requiring replacement. Anticoagulation (A) is for mechanical valves, infections (B) are not easier, and thromboembolism (C) is lower but not a disadvantage.