Related Experiment Video
Updated: May 28, 2026
12:00
Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
Published on: November 24, 2014
Intercoronary continuity between the right and circumflex coronary arteries causing myocardial ischemia
Taner Ulus1, Bülent Görenek, Hüseyin Uğur Yazıcı
1Department of Cardiology, Medicine Faculty of Osmangazi University, Eskişehir, Turkey. tanerulus@hotmail.com
Summary
Intercoronary continuity, a normal coronary artery flow, can paradoxically cause myocardial ischemia. This case study highlights the potential risks of these connections, even with medical management.
Area of Science:
- Cardiology
- Human Physiology
Background:
- Intercoronary continuity, characterized by bidirectional flow in normal coronary arteries, is theorized to protect against obstructive coronary artery disease.
- The functional significance and clinical implications of intercoronary continuity remain largely unelucidated.
- Understanding these connections is crucial for diagnosing and managing coronary artery anomalies.
Observation:
- A 53-year-old woman presented with classic chest pain symptoms.
- Exercise myocardial perfusion imaging indicated perfusion deficits in the basal inferior and inferoseptal walls.
- Coronary angiography confirmed an intercoronary continuity between the right coronary artery and the circumflex artery.
Findings:
- This case is the first to report an association between intercoronary continuity and myocardial ischemia.
- The patient experienced symptom improvement with medical therapy.
- One-year follow-up revealed no recurrence of chest pain.
Implications:
- Intercoronary continuity may not always be protective and can be associated with ischemic events.
- This finding challenges previous assumptions about the protective role of intercoronary continuity.
- Further research is warranted to explore the pathophysiology and clinical relevance of intercoronary continuity in ischemic heart disease.
Related Concept Videos
01:21Coronary Circulation
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
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...
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...
01:21Myocarditis I: Introduction
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
01:18Physiology of the Heart: The Cardiac Cycle
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
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...
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...
01:17Ischemic Heart Disease: Overview
Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
01:26Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
01:26Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...