Related Experiment Videos
Valve replacement for left-sided endocarditis in drug addicts
Abstract:
Eighteen drug addicts with left-sided valvular endocarditis requiring operation are reviewed. Gram-positive bacteria were the most common organisms cultured (61%), with Staphylococcus aureus present in 7 of 11 patients. Gram-negative bacteria, exclusively Pseudomonas aeruginosa, were cultured in the remaining 39%. Indications for operation included sepsis (61%), heart failure (78%), and systemic emboli (22%). Abscesses formed in 6 of 11 patients with gram-positive endocarditis, while only one abscess was present with gram-negative endocarditis. Normal valves were infected in 17 of 18 patients (94%). Early surgical mortality (less than 30 days) was 11%. There were major complications in 79% of these patients, including persistent sepsis (50%), valvular dehiscence, prosthetic endocarditis or perivalvular leakage (37%), and mycotic aneurysms (22%). These complications were directly related to a late mortality of 44%, yielding an overall mortality of 50% in the first nine months after operation. Contrary to previous reports of acceptable surgical survival for valvular endocarditis, these data suggest that endocarditis involving the aortic or mitral valve in a drug addict is a highly lethal disease due to the virulence of the organisms, the severity of the complications encountered, and the predisposition to continued addiction.
Insights
Drug addicts with left-sided infective endocarditis face a high mortality rate. Prompt surgical intervention is often necessary but associated with significant complications and poor outcomes.
Area of Science:
- Cardiology
- Infectious Diseases
- Cardiac Surgery
Background:
- Left-sided infective endocarditis is a serious condition, particularly in intravenous drug users.
- Staphylococcus aureus and Pseudomonas aeruginosa are common pathogens in this population.
- Surgical intervention is frequently required due to sepsis, heart failure, or emboli.
Purpose of the Study:
- To review the outcomes of surgical treatment for left-sided infective endocarditis in drug addicts.
- To identify risk factors and complications associated with this patient group.
Main Methods:
- Retrospective review of 18 drug addicts with left-sided infective endocarditis requiring surgery.
- Analysis of causative organisms, indications for surgery, complications, and mortality rates.
Main Results:
- Gram-positive bacteria (61%) and Gram-negative bacteria (39%, exclusively Pseudomonas aeruginosa) were identified.
- Indications for surgery included sepsis (61%), heart failure (78%), and systemic emboli (22%).
- Early mortality was 11%, with major complications in 79% of patients, leading to an overall 50% mortality within nine months.
Conclusions:
- Infective endocarditis in drug addicts is a highly lethal disease.
- Virulence of organisms, severe complications, and continued addiction contribute to poor surgical outcomes.
- This contrasts with previous reports suggesting acceptable surgical survival for valvular endocarditis.