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Atrial septal defect presenting with Brucella endocarditis.

Mustafa Tuncer1, Hasan Ekim, Yilmaz Güneş

  • 1Department of Cardiology, Yüzüncü Yil University, Van, Turkey.

Circulation Journal : Official Journal of the Japanese Circulation Society
|October 16, 2008
PubMed
Summary

This report describes a rare case of a 45-year-old woman who developed a serious heart infection caused by Brucella bacteria, which settled on a pre-existing hole in her heart wall. Doctors successfully treated the infection with antibiotics before surgically removing the infected tissue and repairing the heart defect. The patient recovered well following the procedure.

Keywords:
zoonotic infectioncardiac surgerybacterial endocarditiscongenital heart disease

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Area of Science:

  • Infectious disease pathology and Brucella endocarditis clinical management
  • Cardiovascular surgery and congenital heart defect repair protocols

Background:

Brucellosis represents a widespread zoonotic condition characterized by diverse systemic manifestations. While typically manageable, this bacterial infection occasionally leads to severe cardiac complications. Brucella endocarditis remains a rare but lethal manifestation of the disease. Prior research has shown that this specific cardiac involvement accounts for most mortality associated with the illness. No prior work had resolved the specific interplay between congenital heart anomalies and this bacterial pathogen. That uncertainty drove the need for detailed clinical documentation of such rare presentations. This gap motivated a closer look at how structural heart defects influence infection localization. Understanding these rare associations is necessary for improving diagnostic accuracy in endemic regions.

Purpose Of The Study:

The primary aim of this report is to document the rare association between a congenital heart anomaly and a specific bacterial infection. This study seeks to highlight the clinical presentation of a patient with both conditions. Researchers intended to demonstrate the diagnostic process for identifying this atypical form of endocarditis. The work addresses the challenge of managing systemic infections that localize on structural heart defects. This motivation stems from the high mortality rates associated with this specific cardiac complication. The authors provide a detailed account of the preoperative and surgical steps taken to treat the patient. By sharing this case, the team hopes to inform clinical practice regarding rare zoonotic cardiac manifestations. The report clarifies the necessity of integrating medical and surgical approaches for optimal patient outcomes.

Main Methods:

The clinical team utilized echocardiography to visualize the cardiac structures and identify the presence of vegetations. This imaging approach allowed for the precise measurement of the infected tissue attached to the heart wall. Serologic testing served as the primary method for identifying the specific bacterial pathogen involved in the case. The medical staff implemented a structured preoperative antibiotic regimen to manage the systemic infection. Surgical management involved the physical excision of the identified vegetations from the defect border. The team then performed a closure of the septal opening using synthetic materials. Postoperative monitoring tracked the patient's recovery progress to ensure the absence of complications. This review approach synthesizes the clinical steps taken to resolve the complex presentation.

Main Results:

The strongest finding indicates that the patient successfully recovered after surgical removal of vegetations and defect closure. Echocardiography revealed vegetations measuring 0.5 by 0.8 centimeters located at the border of the secundum defect. Serologic analysis confirmed the diagnosis by testing positive for Brucella agglutinin. The patient completed a one-month preoperative course of antibiotics to address the systemic infection. Surgical intervention effectively excised the infected tissue and repaired the structural heart anomaly using polypropylene. The patient experienced an uneventful postoperative recovery period following the procedure. Discharge occurred on the tenth day after the surgery was completed. These key findings from the literature demonstrate the efficacy of combined medical and surgical management.

Conclusions:

The authors report a successful surgical intervention for a patient presenting with both a congenital defect and a bacterial infection. This case highlights the importance of considering rare pathogens in patients with structural heart abnormalities. Surgical excision of infected tissue combined with defect closure proved effective in this instance. The patient experienced a smooth recovery period following the operative procedure. These findings suggest that preoperative antibiotic therapy can stabilize patients before cardiac surgery. The report confirms that structural anomalies may serve as a nidus for specific bacterial colonization. Clinicians should maintain a high index of suspicion for atypical endocarditis in patients with known septal defects. This synthesis underscores the value of multidisciplinary management in complex cardiac cases.

The researchers propose that the bacterial infection localized at the border of the patient's secundum atrial septal defect. This specific site served as a nidus for vegetation growth, which was identified via echocardiography as measuring 0.5 by 0.8 centimeters.

The diagnosis was confirmed through serologic analysis, which returned positive results for Brucella agglutinin. This laboratory test identified the specific pathogen responsible for the systemic infection, distinguishing it from other potential causes of endocarditis.

The authors state that a one-month preoperative course of antibiotics was necessary to stabilize the patient. This duration allowed for the management of the systemic infection before the surgical team performed the excision of the vegetations.

Polypropylene was the material utilized to close the atrial septal defect during the surgical procedure. This synthetic suture material provided the structural integrity required to repair the heart wall after the infected vegetations were removed.

The patient underwent a surgical excision of the vegetations located on the heart wall. This intervention was followed by an uneventful recovery, with the patient being discharged from the hospital on the tenth day after the operation.

The authors propose that Brucella endocarditis represents a rare but highly lethal complication of systemic infection. They imply that clinicians must remain vigilant for this specific diagnosis when evaluating patients with pre-existing congenital heart conditions.