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Infective Endocarditis Complicated by Pseudoaneurysm of the Mitral-Aortic Intervalvular Fibrosa Without

Miho Kuroda1, Hiroyuki Yamamoto2, Yoshitsugu Nakamura1

  • 1Department of Cardiovascular Surgery, Chiba-Nishi General Hospital, Matsudo, Japan.

JACC. Case Reports
|July 28, 2021
PubMed

Insights

A rare pseudoaneurysm of the mitral-aortic intervalvular fibrosa (p-MAIVF) can develop from untreated infective endocarditis. Transesophageal echocardiography is crucial for diagnosing this serious condition, even without valve damage.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Medical Imaging

Background:

  • Infective endocarditis (IE) is a serious infection that can lead to severe cardiac complications.
  • Pseudoaneurysms, particularly of the mitral-aortic intervalvular fibrosa (p-MAIVF), are rare but potentially fatal sequelae of IE.
  • Early diagnosis and management are critical for improving patient outcomes in IE.

Observation:

  • This report details a unique case of infective endocarditis.
  • The complication observed was a pseudoaneurysm of the mitral-aortic intervalvular fibrosa (p-MAIVF).
  • Notably, this p-MAIVF occurred without any primary valvular involvement.

Findings:

  • The case underscores that p-MAIVF can arise from IE even in the absence of direct valvular damage.
  • Transesophageal echocardiography (TEE) proved to be an essential diagnostic tool in identifying this rare condition.
  • The findings emphasize the diagnostic utility of TEE in complex IE cases.

Implications:

  • This case highlights the importance of considering p-MAIVF in the differential diagnosis of IE complications.
  • It reinforces the critical role of advanced imaging, such as TEE, in the prompt and accurate diagnosis of cardiac emergencies.
  • Increased awareness of p-MAIVF may lead to earlier intervention and improved prognosis for patients with infective endocarditis.
Keywords:
AV, aortic valveBAV, bicuspid aortic valveIE, infective endocarditisLA, left atriumLVOT, left ventricular outflow tractMAIVF, mitral-aortic intervalvular fibrosaTEE, transesophageal echocardiographyTTE, transthoracic echocardiographyacute heart failurebicuspid aortic valveendocarditismitral-aortic intervalvular fibrosap-MAIVF, pseudoaneurysm of the mitral-aortic intervalvular fibrosapseudoaneurysmtransesophageal echocardiography

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