Mitral Annular Disjunction: Case Report and Literature Review

Area of Science:

• Cardiology
• Cardiac Anatomy

Background:

• Mitral annular disjunction (MAD) is a structural abnormality where the mitral valve hinge point displaces towards the atrium.
• MAD is frequently associated with mitral valve prolapse, ventricular arrhythmias, and sudden cardiac death.
• It remains an underdiagnosed condition within cardiovascular medicine.

Purpose of the Study:

• To present a case of incidentally diagnosed MAD in a patient with paroxysmal atrial fibrillation.
• To review the current literature on MAD, covering epidemiology, diagnosis, natural history, and clinical significance.
• To identify and emphasize critical gaps in existing clinical guidelines for MAD management.

Main Methods:

• Case report of a 37-year-old male with incidental MAD finding.
• Comprehensive literature review of epidemiological data, diagnostic modalities, and clinical outcomes related to MAD.
• Analysis of current treatment guidelines and identification of management ambiguities.

Main Results:

• The case illustrates the incidental detection of MAD during evaluation for other arrhythmias.
• Literature review confirms the association of MAD with significant cardiac events and highlights diagnostic challenges.
• Significant gaps exist in current guidelines concerning the optimal management strategies for patients diagnosed with MAD.

Conclusions:

• MAD is an important, often overlooked, structural cardiac abnormality with potentially fatal consequences.
• Improved diagnostic awareness and further research are crucial for refining treatment protocols.
• Addressing guideline deficiencies is essential for improving patient outcomes in MAD.