Resonant cardiac chamber with diastolic thrill

Area of Science:

• Cardiology
• Echocardiography
• Cardiac Mechanics

Background:

• A 70-year-old male presented with a severe diastolic heart murmur (Levine V/VI).
• The patient exhibited symptoms suggestive of significant valvular dysfunction.

Observation:

• Doppler color-flow imaging revealed eccentric severe aortic regurgitation.
• M-mode echocardiography showed anterior mitral leaflet fluttering and aortic root tremors.
• Curved M-mode myocardial strain rate imaging demonstrated massive basal septal vibration during diastole.

Findings:

• The observed basal septal vibration is a novel echocardiographic finding.
• The regurgitant flow's force is hypothesized to be the cause of the septal vibration.
• This vibration may manifest as a palpable thrill.

Implications:

• This case expands the understanding of the physical manifestations of severe aortic regurgitation.
• Echocardiography, particularly advanced M-mode techniques, can reveal subtle mechanical effects of valvular disease.
• The findings suggest a potential mechanism linking hemodynamic forces to palpable physical signs in cardiac pathology.