very simple describe

1. Blood supply of heart
1

2. 2

3. 3

4. 4

5. Rt Atrioventricular Groove,
Ant Interventricular groove
5

6. 6

7. Atrioventricular groove (CS) &
Post Interventricular groove
7

8. Crux
Meeting point of
•IA groove
• Post AV groove
•Post IV groove
8

9. SA Node & AV Node location
9

10. 10

11. Rt Coronary Artery
 Passes to rt & forwards
b/w infundibulum of rt
ven & rt auricle
 Runs downwards in ant
AV groove
 Reaches inf margin of
heart; winds around it to
the diaph surface; runs in
post AV groove
 Ends by anastomosing
with circumflex br of LCA
-60%
Conus brs
Ventricular brs
AV nodal br
11

12. Branches of Rt coronary Artery
 Rt conus artery-
Annulus of Vieussens
 SA Nodal br – 60%
 Ant atrial branches
 Ant ventr branches
 Rt Marginal artery:
(Largest br)
 Post ventr branches
 Post IV br arises near
CRUX – 70% br of RCA
 Post atrial branches
 AV Nodal artery – 80%
Conus brs
Ventricular brs
AV nodal br
12

13. Conus brs
Ventricular brs
AV nodal br
13

14. Lt Coronary Artery
 Origin: Lt Aortic
sinus
 Passes behind
infundibulum of Rt
ventricle
 Length: 0 to 10mm
 Bifurcates into Ant
IV branch (LAD) &
Circumflex artery
Conus brs
Ventricular brs
AV nodal br
14

15. LAD (Ant IV) artery
 Continuation of
LCA
 Extends beyond the
apex, ends by
anastamosing with
post IV artery (br of
RCA)
Branches:
 Ant ventr brs:
i. Diagonal arteries
ii. Lt Conus artery
 Septal branches
Conus brs
Ventricular brs
AV nodal br
15

16. Circumflex artery
 Runs in Ant AV groove and post AV groove
 Terminates by anastamosing with RCA near crux
Branches:
i. Atrial brs
ii. Ventr branches
iii. SA nodal
(40% cases)
iv. Lt Marginal
v. Post IV br
(only 10% cases)
vi. Kugel’s artery
vii.AV nodal br
(10-20%)
16

17. Branches of
Coronary arteries
17

18. Summary:
RCA:
• Rt atrium
• Lt atrium (ant part)
• Rt ventr except a small strip along the Ant IV groove
• Diaphragmatic surface of Rt ventricle
• Post 1/3 of IV septum
• SA Node and AV Node in majority
• Most conducting system of heart except Lt branch of
Bundle of His
19

19. LCA:
• Post part of Lt Atrium
• Ant and Lat walls of Lt ventricle
• Ant 2/3 of IV septum
• Lt br of Bundle of His
• SA & AV Nodes in 30% cases
20

20. 21

21. Venous Drainage
23

22. Tributaries of Coronary sinus:
1. Great Cardiac vein
• Begins near apex of
heart; acc. Ant IV A &
more proximally cx
artery
• Terminates at lt end of
coronary sinus
2. Middle cardiac vein
• Accompanies Post IV
artery and opens at
termination of coronary
sinus
24

23. 3. Small Cardiac vein
• Accompanies rt marginal artery
• Runs in AV groove to end into rt end of CS
• May open directly into rt atrium
4. Oblique Vein of Lt Atrium (of Marshall)
• Runs in the post surface of Lt Atrium and drains into Lt end of Coronary sinus
5. Post Vein of Lt Ventricle
• Runs on diaphragmatic surface of Lt ventricle and ends in middle of coronary
sinus
6. Rt Marginal vein
• Accompanies Rt Marginal artery and drains into Small Cardiac vein or directly
into the Rt Atrium 25

24. Oblique Vein of Lt Atrium (of Marshall)
26

25. Applied Anatomy:
• Coronary Artery Disease (CAD)
• Coronary Angiography
• PTCA (Percutaneus Transluminal
Coronary Angioplasty)
• CABG ( Coronary Artery Bypass Graft)
• Cardiac catheterisation
27

26. Coronary Artery Disease (CAD) & Ischaemic Heart
Diseases (IHD) – due to atherosclerosis
- Angina Pectoris – transient myocardial ischemia
- Myocardial Infarction – occlusive thrombus
Investigations for CAD & IHD
a) ECG
b) Coronary Angiography
28

27. 29

28. M. I.
30

29. STENTING
31

30. 32

31. 33

32. CABG
34

33. CABG
35

34. CORONARY
CATHETRISATION
36