Related Experiment Video
Updated: May 19, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
"Snake" shaped vegetation in right coronary artery.
Punnaiah C Marella1, Shishir Murarka, Siva K Talluri
1Department of Internal Medicine, Banner Estrella Medical Center, Phoenix, AZ, USA.
Infective endocarditis can cause coronary embolism, leading to myocardial infarction. Prompt diagnosis is crucial as standard heart attack treatments like thrombolytics are contraindicated in this septic scenario.
Area of Science:
- Cardiology
- Infectious Diseases
- Vascular Medicine
Background:
- Infective endocarditis, an infection of the heart valves, is an uncommon cause of coronary artery embolism.
- Coronary embolism can precipitate myocardial infarction (MI), presenting a diagnostic and therapeutic challenge distinct from typical MI.
- Septic patients with MI require consideration of embolic causes, necessitating specific diagnostic approaches.
Observation:
- A 45-year-old male presented with vision loss and fevers, diagnosed with non-ST segment elevation myocardial infarction.
- Persistent bacteremia and systemic emboli were noted, with investigations revealing mitral valve vegetation.
- Cardiac catheterization identified a unique "snake"-shaped embolic vegetation within the right coronary artery.
Findings:
- The patient's condition was attributed to coronary embolism secondary to infective endocarditis.
- Management involved surgical intervention for the mitral valve vegetation and a course of antibiotics.
- The case highlights the importance of considering coronary embolism in septic patients with MI.
Implications:
- Early diagnosis of embolic MI in septic patients is critical for appropriate management, avoiding potentially harmful treatments like thrombolytics.
- Transesophageal echocardiography and cardiac catheterization are valuable tools for diagnosing and guiding treatment.
- This case underscores the need to include infective endocarditis as a differential diagnosis in myocardial infarction patients with signs of sepsis.
More Related Videos
13:10Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery (ALCAPA)
Published on: April 24, 2017
10:39Murine Left Anterior Descending (LAD) Coronary Artery Ligation: An Improved and Simplified Model for Myocardial Infarction
Published on: April 2, 2017
Related Concept Videos
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Cardiac Catheterization II: Right Heart Catheterization
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Overview of Systemic Veins
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the middle...
Coronary Artery Disease II: Pathophysiology