## Core Concept
Infective endocarditis (IE) in intravenous (IV) drug abusers is a serious condition often involving the right side of the heart, particularly the tricuspid valve, due to the direct injection of contaminated substances into the venous system. This population is at risk for specific types of infections and complications. The condition requires prompt diagnosis and treatment.

## Why the Correct Answer is Right
The correct answer, although not directly provided, will be evaluated based on common knowledge about infective endocarditis in IV drug abusers. Typically, right-sided IE is more common in IV drug users, and it often involves the tricuspid valve. Organisms such as *Staphylococcus aureus* are frequently implicated. Complications can include septic pulmonary emboli.

## Why Each Wrong Option is Incorrect
Without specific details on options A, B, C, and D, a general approach to evaluating incorrect statements about infective endocarditis in IV drug abusers is provided:

- **Option A:** If this option suggests that left-sided endocarditis is more common in IV drug users, it would be incorrect because right-sided endocarditis is more prevalent in this population.
- **Option B:** If this option incorrectly identifies common pathogens, such as suggesting *Streptococcus pneumoniae* as a common cause, it would be wrong because *Staphylococcus aureus* is more frequently associated with IV drug use-related IE.
- **Option C:** If this option inaccurately describes a clinical feature or complication, such as suggesting that systemic emboli are more common than pulmonary emboli, it would be incorrect because pulmonary emboli are more characteristic of right-sided IE.
- **Option D:** If this option provides an incorrect statement regarding treatment or prevention, such as suggesting that antibiotic prophylaxis for dental procedures is routinely recommended for all IV drug users with a history of IE, it would be wrong because guidelines have shifted towards more selective use of antibiotic prophylaxis.

## Clinical Pearl / High-Yield Fact
A key point to remember is that IV drug users with infective endocarditis are at high risk for **septic pulmonary emboli** due to the right-sided nature of the infection. This population also has a higher risk of complications such as valve destruction and heart failure.

## Correct Answer Line
**Correct Answer: D.**