scholarly journals The artery of Mouchet: blood supply of the septomarginal trabecula in 50 human hearts

2018 ◽  
Vol 64 (10) ◽  
pp. 916-921
Author(s):  
Carlos Chagas ◽  
Lucas Pires ◽  
Tulio Leite ◽  
Marcio Babinski
Keyword(s):  
Myocardial Infarction ◽  
Blood Supply ◽  
Coronary Arteries ◽  
Muscular Structure ◽  
Atrioventricular Bundle ◽  
The Right ◽  
Clinical Conditions ◽  
Arterial Branch

SUMMARY The septomarginal trabecula is a muscular structure which transmits the right branch of the atrioventricular bundle. It is usually supplied by a branch from the second anterior septal artery. Anastomoses between the right and left coronary arteries may happen on the septomarginal trabecula. They are of great significance in order to prevent ischemia during a myocardial infarction. Surgeries such as Konno's and Ross' procedures implies in knowledge of these vessels anatomy. The coronary arteries of 50 human hearts were injected with latex and subsequentely dissected with the purpose of identifying the arterial branch that supplied the septomarginal trabecula. The trabecular branch arose from the second anterior septal artery in 38% of cases, and the branch arose from the first anterior septal artery in 26%. One of the hearts had its septomarginal trabecula supplied by the conus arteriosus arteryliterature. Anastomoses between the right and left coronary arteries were found inside the septomarginal trabecula. The right branch of the atrioventricular bundle is subject to a great number of clinical conditions and is often manipulated during surgery, thus, the study of the septal branches of the coronary arteries and the trabecular branch is essential.

scholarly journals Electroangiographic Correlation of Simultaneous ST-Segment Elevations of Anterior and Inferior Segment: Who Is the Culprit?

2021 ◽  
pp. 263246362110155
Author(s):  
Pankaj Jariwala ◽  
Shanehyder Zaidi ◽  
Kartik Jadhav
Keyword(s):  
Myocardial Infarction ◽  
Coronary Angiography ◽  
Coronary Arteries ◽  
Index Case ◽  
St Segment Elevation ◽  
Segment Elevation Myocardial Infarction ◽  
St Segment ◽  
Inferior Segment ◽  
The Right ◽  
Proximal Occlusion

Simultaneous ST-segment elevation (SST-SE) in anterior and inferior leads in the setting of ST-segment elevation myocardial infarction is often confounding for a cardiologist and further more challenging is the angiographic localization of the culprit vessel. SST-SE can be fatal as it jeopardizes simultaneously a larger area of myocardium. This phenomenon could be due to “one lesion, one artery,” “two lesions, one artery,” “two lesions, two arteries,” or combinations in two different coronary arteries. We have discussed an index case where we encountered a phenomenon of SST-SE and coronary angiography demonstrated “two lesions, one artery” (proximal occlusion and distal critical diffuse stenoses of the wrap-around left anterior descending [LAD] artery) and “two lesions, two (different coronary) arteries” (previously mentioned stenoses of the LAD artery and critical stenosis of the posterolateral branch of the right coronary arteries). We have also described in brief the possible causes of this phenomena and their electroangiographic correlation of the culprit vessels.

Myocardial infarction (clinic, diagnostic features, complications, treatment)

1997 ◽  
Vol 78 (2) ◽  
pp. 120-128
Author(s):  
I. A. Latfullin
Keyword(s):  
Myocardial Infarction ◽  
Blood Supply ◽  
Coronary Arteries ◽  
Heart Muscle ◽  
Oxygen Demand ◽  
Myocardial Oxygen Demand ◽  
Ischemic Necrosis ◽  
Diagnostic Features

Myocardial infarction (MI) occurs due to an acute mismatch between myocardial oxygen demand and its blood supply through the coronary arteries of the heart, which results in the development of ischemic necrosis of the heart muscle with subsequent topical changes on ECG.

Diagnostic difficulties of isolated right ventricular myocardial infarction

Kardiologiia ◽  
2021 ◽  
Vol 61 (9) ◽  
pp. 66-70
Author(s):  
N. S. Kuznetsova ◽  
R.  M. Rabinovich ◽  
V. V. Mazur ◽  
E. S. Mazur
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery ◽  
Pulmonary Artery ◽  
Right Ventricular ◽  
Blood Supply ◽  
Right Ventricular Myocardial Infarction ◽  
Diagnostic Difficulties ◽  
Heart Blood ◽  
The Right ◽  
Proximal Occlusion

The article describes a case of isolated right ventricular myocardial infarction induced by proximal occlusion of the right coronary artery in a patient with the left type of heart blood supply. A specific feature of the case was detection of the McConnell’s sign, which is considered characteristic of pulmonary artery thromboembolism. 

Regularities in the distribution of myocardial bridges over the branches of the coronary arteries

2020 ◽  
Vol 9 (3) ◽  
pp. 16-21
Author(s):  
E. G. Dmitrieva ◽  
A. A. Yakimov
Keyword(s):  
Coronary Artery ◽  
Elderly People ◽  
Blood Supply ◽  
Coronary Arteries ◽  
Human Heart ◽  
Left Coronary Artery ◽  
Heart Diseases ◽  
Macroscopic Anatomy ◽  
Myocardial Bridges ◽  
The Right

The article highlights peculiarities of localization of myocardial bridges. It is believed that the coronary arteries and their branches are located in the subepicardial tissue. However, some researchers describe cases of intramural localization of their sections. Myocardial bridges – a set of fibers of the ventricular myocardium located over a certain area of the subepicardial branch of the coronary artery - represent variants of such localization.The aim of the study was to establish the patterns of macroscopic anatomy and topography of myocardial bridges investigating anatomical sections of the human heart in the adult and elderly people. Material and methods. The study involved 65 formalin-fixed sample preparations of the human heart of the adult and elderly people who died of conditions that were not associated with heart diseases. The authors measured transverse and longitudinal dimensions of the ventricular complex of the heart, and calculated the transverse-longitudinal index. Subepicardial vessels were prepared without prior injection. The number of myocardial bridges over the main branches of the coronary arteries was counted and their length was measured. The type of blood supply to the heart was determined according to a three-member classification, depending on the source of discharge of the posterior interventricular branch. Results. Myocardial bridges were observed on 44 (67.6%) sample preparations. As a rule, they were located over the branches of the left coronary artery (91.5%). They were typically located in the proximal half of the anterior interventricular sulcus. The length of the bridges ranged from 2.5 to 64 mm (Me = 13 mm). A direct positive correlation was found between the length of the ventricular complex of the heart and the length of the bridges. The relationship between the type of blood supply to the heart and the presence of bridges was not revealed. In 26 preparations, a cone artery departed from the right coronary sinus of the aorta, in addition to the right coronary artery, and bridges were observed in 17 sample preparations. Conclusion. Myocardial bridges are more typical for the branches of the left coronary artery compared to the right. They are typically localized in the proximal third of the anterior interventricular sulcus. There is a dependence between the length of the bridges and the length of the ventricular complex of the heart. The distribution and number of myocardial bridges does not depend on the type of blood supply to the heart, but is associated with the independent discharge of the cone artery from the aorta.

scholarly journals Acute Thrombotic Occlusion of Right Coronary and Left Circumflex Coronary Arteries in a Patient with Antiphospholipid Syndrome: Successful Stent Implantation

2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Serdar Biceroglu ◽  
Muge Ildizli Demirbas ◽  
Mustafa Karaca ◽  
Murat Yalcin ◽  
Hasan Yilmaz
Keyword(s):  
Myocardial Infarction ◽  
Antiphospholipid Syndrome ◽  
Coronary Arteries ◽  
Stent Implantation ◽  
Primary Angioplasty ◽  
Thrombotic Occlusion ◽  
First Case ◽  
Primary Coronary Angioplasty ◽  
The Right ◽  
Acute Inferior Myocardial Infarction

Antiphospholipid syndrome is a rare disorder. Acute myocardial infarction is uncommon among these patients. Here we report a case of a 44-year-old man with antiphospholipid syndrome admitted for acute inferior myocardial infarction. Performed coronary angiography revealed that both the right coronary and the left circumflex coronary arteries were occluded by thrombi. We successfully performed primary angioplasty and stent implantation for both of the occluded coronary arteries. In the literature, this is the first case with antiphospholipid syndrome in which primary coronary angioplasty with stent implantation was successfully performed for two coronary arteries with acute thrombotic occlusion.

scholarly journals The type of blood supply to the heart and the total length of coronary arteries in men and women in the second period of mature and elderly age

2018 ◽  
Vol 17 (2) ◽  
pp. 37-41
Author(s):  
V. Y. Milyukov ◽  
T. S. Zharikova
Keyword(s):  
Blood Supply ◽  
Coronary Arteries ◽  
The Elderly ◽  
Elderly Age ◽  
Men And Women ◽  
Total Length ◽  
Age Related ◽  
The Difference ◽  
The Right ◽  
Second Period

The goal of the work is to identify gender peculiarities and age-related changes in the length of the coronary arteries in the norm. 161 coronaroangiograms of men and women aged 36-74 years without signs of pathological changes of the coronary arteries were studied. The programs «Syngo Fast View», «Adobe Photoshop CS7», «Microsoft Excel», «SPSS» were used. In elderly people, the length of the branches of the right and left coronary arteries and their total length is greater than in people of the second period of adulthood. In the elderly, there is a decrease in the difference in the length of the branches of the channel of the right and left coronary arteries. The type (type) of blood supply of the heart can be determined, based on the evaluation of the coronary bed: the length of the coronary arteries and the volume of blood supply to them tissues.

Studies on the Functionality of Newly Synthesized Fibrinogen after Treatment of Acute Myocardial Infarction with Streptokinase, Increase in the Rate of Fibrinopeptide Release

1993 ◽  
Vol 70 (06) ◽  
pp. 0978-0983 ◽  
Author(s):  
Edelmiro Regano ◽  
Virtudes Vila ◽  
Justo Aznar ◽  
Victoria Lacueva ◽  
Vicenta Martinez ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Molecular Weight ◽  
Steady State ◽  
High Molecular Weight ◽  
Coronary Arteries ◽  
Risk Index ◽  
Weight Fraction ◽  
High Molecular Weight Fraction ◽  
Fibrinopeptide A

SummaryIn 15 patients with acute myocardial infarction who received 1,500,000 U of streptokinase, the gradual appearance of newly synthesized fibrinogen and the fibrinopeptide release during the first 35 h after SK treatment were evaluated. At 5 h the fibrinogen circulating in plasma was observed as the high molecular weight fraction (HMW-Fg). The concentration of HMW-Fg increased continuously, and at 20 h reached values higher than those obtained from normal plasma. HMW-Fg represented about 95% of the total fibrinogen during the first 35 h. The degree of phosphorylation of patient fibrinogen increased from 30% before treatment to 65% during the first 5 h, and then slowly declined to 50% at 35 h.The early rates of fibrinopeptide A (FPA) and phosphorylated fibrinopeptide A (FPAp) release are higher in patient fibrinogen than in isolated normal HMW-Fg and normal fibrinogen after thrombin addition. The early rate of fibrinopeptide B (FPB) release is the same for the three fibrinogen groups. However, the late rate of FPB release is higher in patient fibrinogen than in normal HMW-Fg and normal fibrinogen. Therefore, the newly synthesized fibrinogen clots faster than fibrinogen in the normal steady state.In two of the 15 patients who had occluded coronary arteries after SK treatment the HMW-Fg and FPAp levels increased as compared with the 13 patients who had patent coronary arteries.These results provide some support for the idea that an increased synthesis of fibrinogen in circulation may result in a procoagulant tendency. If this is so, the HMW-Fg and FPAp content may serve as a risk index for thrombosis.

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