Related Experiment Videos
The unsuspected complications of bacterial endocarditis imaged by gallium-67 scanning
1Nuclear Medicine Dept., St. Luke's Medical Center, Milwaukee, WI 53201-2901.
Abstract:
In this case report, we present a patient with bacterial endocarditis who was evaluated by 67Ga imaging for persistent fever despite treatment with multiple intravenous antibiotics. Although evidence of bacterial endocarditis was absent with 67Ga imaging, the study demonstrated findings that represent complications of bacterial endocarditis. The procedure demonstrated moderate pericardial uptake of isotope and thus provided the first evidence of pericarditis which was later confirmed at surgery. The study also demonstrated mildly increased activity in the vicinity of the aortic root and right atrium. A sinus of valsalva abscess, complicating the underlying diagnosis of bacterial endocarditis, was found and treated with surgery and antibiotics. At autopsy 4 wk later, a persistence sinus of valsalva abscess was found which extended into the right atrium.
Insights
Gallium-67 (67Ga) imaging revealed complications of bacterial endocarditis, including pericarditis and a sinus of Valsalva abscess, despite not showing direct evidence of the infection itself. This case highlights 67Ga imaging
Area of Science:
- Nuclear Medicine
- Infectious Diseases
- Cardiology
Background:
- Bacterial endocarditis is a serious infection requiring prompt diagnosis and management.
- Persistent fever despite antibiotic treatment can indicate complications or treatment failure.
- Gallium-67 (67Ga) citrate imaging is a nuclear medicine technique used to detect inflammation and infection.
Observation:
- A patient with bacterial endocarditis presented with persistent fever despite intravenous antibiotics.
- 67Ga imaging was performed to evaluate for persistent infection.
- The imaging revealed moderate pericardial uptake and mild increased activity near the aortic root and right atrium.
Findings:
- 67Ga imaging did not show direct evidence of bacterial endocarditis.
- The imaging identified pericarditis, later confirmed surgically.
- A sinus of Valsalva abscess, a complication of bacterial endocarditis, was detected and surgically treated.
Implications:
- 67Ga imaging can be valuable in detecting complications of bacterial endocarditis, even when direct evidence of infection is absent.
- This case underscores the utility of nuclear imaging in diagnosing challenging infectious and inflammatory cardiac conditions.
- Early identification of complications like pericarditis and abscess formation is crucial for effective patient management and improved outcomes.