Two-dimensional echocardiographic findings in right-sided infective endocarditis

Area of Science:

• Cardiology
• Infectious Diseases
• Medical Imaging

Background:

• Right-sided infective endocarditis is a serious complication in intravenous drug users.
• Accurate diagnosis is crucial for effective treatment and management.
• Echocardiography is a key diagnostic tool, but its efficacy can vary by technique.

Purpose of the Study:

• To compare the diagnostic utility of M-mode and two-dimensional echocardiography (2DE) in patients with right-sided infective endocarditis.
• To evaluate the effectiveness of 2DE in visualizing vegetations and assessing treatment response.

Main Methods:

• M-mode and 2DE were performed on 12 narcotic addicts with suspected right-sided infective endocarditis.
• Multiple transducer positions were utilized to optimize valve visualization during 2DE.
• Echocardiographic follow-up was conducted after antibiotic therapy in a subset of patients.

Main Results:

• 2DE detected vegetations in 10 patients (9 tricuspid, 1 pulmonic), while M-mode identified them in only 6 patients (5 tricuspid, 1 pulmonic).
• Improved visualization with multiple transducer positions contributed to higher 2DE detection rates.
• Post-antibiotic therapy, vegetations showed resolution or diminution in size in 6 of 7 assessed patients.

Conclusions:

• Two-dimensional echocardiography offers significant advantages over M-mode echocardiography for evaluating right-sided infective endocarditis.
• 2DE facilitates better visualization of cardiac valves, leading to improved diagnostic accuracy in this patient population.
• Echocardiography can effectively monitor treatment response in infective endocarditis.