scholarly journals Specific morphological characteristics of the coronary arteries

2013 ◽  
Vol 19 (2) ◽  
pp. 112-116
Author(s):  
V. Ispas ◽  
D.M. Iliescu ◽  
R. Baz ◽  
P. Bordei
Keyword(s):  
Coronary Artery ◽  
Left Ventricle ◽  
Right Coronary Artery ◽  
Free Edge ◽  
Coronary Ostium ◽  
Posterior Surface ◽  
Circumflex Artery ◽  
The Third ◽  
Marginal Artery ◽  
The Right

Abstract In 68% of cases, the left coronary ostium is at the free edge of the left sigmoid valve in 22% of cases over the edge of the valve and in 8% of cases under the free edge of the valve. In 56% of cases, the right coronary ostium is at the free edge of the left sigmoid valve in 28% of cases over the edge of the valve and in 16% of cases under the free edge of the valve. We found 5 cases with two right coronary ostium and 2 cases with two left coronary ostium. We found that in 38% of cases, the left coronary artery ends in three branches, such as anterior interventricular, circumflex and left marginal arteries, in rest of the cases, the left coronary artery ending by two branches like the anterior interventricular and circumflex arteries in which case the marginal artery originate from circumflex artery and rarely from anterior interventricular artery, or both, in this last case the left marginal artery being double. We found only 8 cases in which the circumflex artery ends as posterior interventricular artery in rest of the cases being represented by the right coronary artery end. Circumflex artery ends by two branches quite often and rarely with three branches which can sometimes be long, down to near the apex of the heart. In 8% of cases, the circumflex artery was less developed and do not vascularize other than the left side of the posterior surface of the left ventricle, sometimes his terminal ramus being left marginal artery. The right coronary artery frequently ends on diaphragmatic surface of the heart either as a single branch in posterior interventricular groove, by bifurcation or even rarely by trifurcation, when one or two branches are located in the posterior interventricular groove. Sometimes the right coronary artery ends on the posterior surface of the left ventricle, where the posterior interventricular artery occurs as collateral branch of the right coronary artery, the right coronary artery extending their vascularization territory to the posterior surface of the left ventricle, right up to the apex of the heart, the right coronary dominance, the circumflex artery in this case ending on the lateral surface of the heart. The right coronary artery may end up on the posterior surface of the right ventricle in which case posterior interventricular artery is represented by the terminal portion of the circumflex artery. The right coronary artery rarely ended as the posterior interventricular artery can reach the apex of the heart. We have found that the dominant type of a coronary artery can be held not only in the number of collateral, but also by their caliber at their origin from the aorta. We encountered 7 cases in which there is a third coronary artery, in 5 cases the third coronary artery being an anterior right I called her middle coronary artery or right ventricular branch and anterior ventricular artery, and in two cases the third coronary artery represent the circumflex artery. In 6 cases of the 7 cases described the third coronary artery showed no atrial branches

scholarly journals Coronary arteries morphometry and their vascular territories

2013 ◽  
Vol 19 (3) ◽  
pp. 130-135
Author(s):  
V. Ispas ◽  
P. Bordei ◽  
D. M. Iliescu ◽  
R. Baz
Keyword(s):  
Coronary Artery ◽  
Right Ventricle ◽  
Coronary Arteries ◽  
Right Coronary Artery ◽  
Left Coronary Artery ◽  
Ct Scanner ◽  
Circumflex Artery ◽  
Marginal Artery ◽  
The Right ◽  
Coronary Dominance

Abstract Our study was performed on a total of 24 angioCT’s by each coronary artery executed on a GE LightSpeed VCT64 Slice CT Scanner. To assess the type of vascularization (coronary dominance) we used also dissection on fresh and formalin preserved hearts, injection of contrast substance followed by radiography and plastic mass injection followed by corrosion. Left coronary artery from origin I found a diameter of between 4.1 to 5.8 mm, the length of the left main coronary artery until its branching (bi or trifurcation) ranging from 3 to 11.8 mm. The diameter of the anterior interventricular artery, was between 1.8 to 3.4 mm, and when the anterior interventricular artery branched off a left marginal artery, it was less voluminous than the case when the marginal artery origin by trifurcation of coronary artery, with 1.8-2.5 mm. Anterior interventricular artery detach left anterior ventricular branches with a diameter of 1.2-2.2 mm. Circumflex artery present a diameter of 2.1 to 4.2 mm at the left aspect of the heart circumflex artery has a diameter of 2.1 to 3.4 mm. On the posterior surface of left ventricle from circumflex artery branches come off with 1.2 to 2.4 mm in diameter. Left marginal artery, when originate from the left coronary artery had a diameter of 2.1 to 2.8 mm. The right coronary artery presents at origin a diameter of 3.1 to 5.4 mm, from the coronary right for the anterior aspect of the right ventricle unhooking the branches with a diameter of 2.2 to 4.2 mm. To the posterior of the right ventricle right coronary artery gave branches with a diameter of 1.6 to 2.6 mm. Right marginal artery had a diameter of 1.6-2.2 mm, and in one case (4.17% from cases) had a diameter of 3.4 mm (when the right coronary origin was 5.4 mm ). From right the coronary atrial branches detaches with a caliber of 0.6-2 mm. Regarding the coronary dominance, we found on a number of 88 hearts that in 29.54% of cases there is predominance of right coronary artery in 25% of cases there is a predominance of the left coronary artery, and in 45.46% of cases there is a balance between the territories of the vascularity of the two coronary arteries.

Right Coronary Ostium Agenesis with Anomalous Origin of the Right Coronary Artery from an Ectasic Circumflex Artery

Angiology ◽  
1995 ◽  
Vol 46 (7) ◽  
pp. 637-639 ◽  
Author(s):  
Fernando Ayala ◽  
Elias Badui ◽  
Hector Murillo ◽  
Rosalba Madrid ◽  
Arturo Almazan ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Anomalous Origin ◽  
Coronary Ostium ◽  
Circumflex Artery ◽  
The Right

scholarly journals Angiographic profile of coronary arteries in Keralite population

2014 ◽  
Vol 03 (03) ◽  
pp. 143-149
Author(s):  
Apsara M P.
Keyword(s):  
Coronary Artery ◽  
Coronary Arteries ◽  
Right Coronary Artery ◽  
Research Work ◽  
Myocardial Revascularization ◽  
Chi Square ◽  
Circumflex Artery ◽  
Chi Square Test ◽  
The Right ◽  
Coronary Angiograms

Abstract Background and aims: The incidence of Coronary Artery Disease (CAD) has reached alanning proportions in India. The pathological hall mark of CAD is myocardial ischemia resulting from the atherosclerotic narrowing of coronary arteries. In this era of advanced interventions and cardiac surgery, a thorough knowledge of normal and variant anatomy of coronary arteries is of prime significance and of great use both to the clinicians and anatomists. Materials and methods: One hundred coronary angiograms of patients free of disease were studied in detail in different profiles. The data obtained was quantified according to their frequencies. The relation between the length of left main coronary artery and coronary artery dominance was statistically analyzed using the 'Chi Square test for Trend'. Results: This study highlighted some interesting findings such as the origin of Sino- atrial nodal artery from the second segment of right coronary artery in 3% of cases, double right marginal artery in 4% cases. Other variations such as Mouchet's posterior recurrent interventricular artery, origin of circumflex artery from the right coronary artery and abnormal communication between the terminal parts of right coronary artery and circumflex artery were each noticed in 1 % of cases. Conclusions: Coronary arteries and their branches are prone to variations in their course and morphology. Prior knowledge about this is important for the interpretation of coronary angiograms and surgical myocardial revascularization. The present work on normal and variant pattern of coronary arteries will help in gathering momentum to the already advancing research work in this field.

scholarly journals Multiple Coronary Artery Microfistulas Associated with Apical Hypertrophic Cardiomyopathy: Left and Right Coronary Artery to the Left Ventricle

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Jeong-Woo Choi ◽  
Kyehwan Kim ◽  
Min Gyu Kang ◽  
Jin-Sin Koh ◽  
Jeong Rang Park ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Hypertrophic Cardiomyopathy ◽  
Left Ventricle ◽  
Right Coronary Artery ◽  
Wall Thickening ◽  
Apical Hypertrophic Cardiomyopathy ◽  
Left Anterior Descending Artery ◽  
Atherosclerotic Stenosis ◽  
Left And Right ◽  
The Right

A 76-year-old woman underwent coronary angiography for chest pain. On the coronary angiogram, no significant coronary artery atherosclerotic stenosis was observed. Multiple coronary artery microfistulas, draining from the left anterior descending artery to the left ventricle and from the posterior descending artery of the right coronary artery to the left ventricle, were observed. Apical wall thickening and fistula flow from the left anterior descending artery were demonstrated by using transthoracic echocardiography. We describe a rare case of multiple coronary artery microfistulas from the left and right coronary artery to the left ventricle combined with apical hypertrophic cardiomyopathy.

scholarly journals Malignant Arrhythmia in Acute Conus Artery Occlusion

2021 ◽  
pp. 1-4
Author(s):  
Lucian Calmac ◽  
◽  
Ruxandra-Nicoleta Horodinschi ◽  
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Distal Segment ◽  
Artery Occlusion ◽  
Fractional Flow ◽  
Circumflex Artery ◽  
Flow Reserve ◽  
Malignant Arrhythmia ◽  
Significant Life ◽  
The Right

We present the case of a 74 y.o. woman with multiple cardiovascular risk factors, admitted for worsening angina over the past three weeks. On admission she had no significant electrocardiographic and echocardiographic changes and a negative Troponin test. Coronary angiography revealed single vessel disease: severe stenosis of the right coronary artery (RCA) ostium (difficult to assess visually), 50% mid-vessel and 60% distal segment. The left anterior descending artery and circumflex artery had non-significant stenoses. Fractional flow reserve technique (FFR) was used to evaluate the RCA ostial lesion which proved to be significant, therefore angioplasty with three drug-eluting stents was performed for all three lesions of the right coronary artery, starting from the ostium. Due to its location, minimal aortic protrusion of the first stent occluded a small ostial branch which proved to be the conus artery and the patient developed mild transient angina during the procedure, but with good outcome regarding the intracoronary flow. After the angioplasty the patient presented anterior leads ST-elevation and developed mild chest pain with an increase in cardiac enzymes (CK-MB peak 39 U/L). Later on, she had two episodes of ventricular fibrillation with rapid defibrillation to sinus rhythm, with no further events or echocardiographic changes and no recurrent angina. The patient was started on amiodarone to prevent ventricular arrhythmias and continued double antiplatelet therapy with aspirin and clopidogrel. She was discharged six days later. In conclusion, although the conus branch is a small artery, its acute occlusion can have significant life-threatening complications.

scholarly journals Characterization of coronary arteries in Giant Anteater (Myrmecophaga tridactyla: Myrmecophagidae)

2019 ◽  
Vol 71 (2) ◽  
pp. 545-552
Author(s):  
C.A.T. Cruvinel ◽  
T.M.A. Cruvinel ◽  
L.P.N. Aires ◽  
R.F. Rodrigues ◽  
A.P.F. Melo
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Left Coronary Artery ◽  
Coronary Vessels ◽  
Coronary Ostium ◽  
Thoracic Cavity ◽  
Whole Heart ◽  
The Right ◽  
Single Coronary Ostium

ABSTRACT Were used twelve (12) adult anteaters (Myrmecophaga tridactyla), adults, 6 (six) males and 6 (six) females, weighing from 20 to 27.32kg from free life. The thoracic cavity was opened until visualization of the whole heart and lungs and later injection of the coronary vessels. The right coronary artery emerged through a single coronary ostium of the aorta, 50%, emitting the intermediate branch and the subsinuous interventricular branch, had a path directed to the subsurface interventricular groove. In the other 50%, the right coronary artery was not present, showing only its branches, intermediate branch and subsurface interventricular branch with emergence of the aorta. Left coronary artery presented, in 83.33%, origin from the aorta in single ostium, issuing the circumflex and interventricular paraconal branches. In 16.66%, the left coronary artery was not evidenced originating from the aorta, but its branches, circumflex and interventricular paraconal.

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