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The clinical anatomy of coronary arteries
1Institut für Anatomie und Zellbiologie, Universität Würzburg, Koellikerstr. 6, 97070 Würzburg, Germany. anat033@mail.uni-wuerzburg.deauthorinfo
Insights
Anatomical variations in coronary arteries increase the risk of heart problems like ischemia and sudden death. This study details these coronary artery anomalies in older adults, crucial for future medical training.
Area of Science:
- Cardiovascular Anatomy
- Medical Education
Background:
- Coronary artery anomalies pose significant risks for myocardial ischemia, leading to serious cardiac events.
- Understanding these variations is critical for treating elderly patients.
Purpose of the Study:
- To survey the morphology of coronary arteries in elderly individuals.
- To document common and rare coronary artery peculiarities and anomalies.
Main Methods:
- Examination of 200 cadaver specimens and 30 corrosion casts.
- Material representative of the German septuagenarian and octogenarian population.
Main Results:
- Detailed enumeration of coronary artery peculiarities: ectopic ostia, aberrant arteries, unusual courses, and variations in branching patterns.
- Analysis includes anastomoses, collateral circulation, age-related calcifications, and aneurysms.
Conclusions:
- The study provides a comprehensive overview of coronary artery anatomy and its variations in the elderly.
- This anatomical knowledge is vital for medical students and clinicians managing cardiovascular diseases.
Abstract:
In view of the fact that, in cardiology and coronary surgery, peculiarities and anomalies of the coronary arteries pose a great potential risk for myocardial ischemia resulting in arrhythmia, angina, infarction, and sudden death, a survey of the morphology of the coronary arteries in cadaver specimens (n = 200) and corrosion casts (n = 30) was undertaken. The results are not divided into those obtained from subjects with or without coronary heart disease. The randomly selected material from two anatomical institutes, of the Universities of Munich and Würzburg, was considered representative of an average group of septuagenarians and octogenarians in the German population. It is the patient of this age that the young medical students of today (the future physicians) will be confronted with and called upon to treat. The study begins with a review of the nomenclature and a consideration of unofficial (but often clinically used) terms and synonyms for coronary arteries and their branches, followed by a description of modern diagnostic techniques based on the presence of normal and anomalous cardiac vessels. It continues with a demonstration of "normal" macro- and microanatomy, a description of the most frequent ramification pattern and as well of the many peculiarities of the coronary arteries. These are briefly enumerated here: ectopic coronary ostia and aberrant and accessory arteries; angles of origin and division; three-dimensional orientation of the coronary stems; intramural, intraluminal, and intracavitary courses; avascular coronary and interventricular sulci; extracardiac noncoronary myocardial supply; atrial branches, sinuatrial node artery, atrioventricular node artery, principles of septal arterial supply, variations of the right and left superior septal arteries; endomural, intracoronary, intercoronary, and noncoronary anastomoses and collaterals; measurement and evaluation of age-related and atheromatous coronary calcifications; multiple coronary aneurysmata.