quick cardiac anatomy question

[knxemt1983]

ok so we're going through a 12-lead class have to know which leads relate to which arteries. I think I have it straight, and I know these are general guidelines but before I do all the practice ecg's here is what I am thinking

LAD is anterior, septal, and some inferior
circumflex is lateral and posterior
rca is right and inferior

am I thinking close to right?

 

[silver]

ok so we're going through a 12-lead class have to know which leads relate to which arteries. I think I have it straight, and I know these are general guidelines but before I do all the practice ecg's here is what I am thinking

LAD is anterior, septal, and some inferior
circumflex is lateral and posterior
rca is right and inferior

am I thinking close to right?

RCA more often than not is posterior

Edit to clarify:

The Posterior Descending Artery (PDA) comes off of the RCA about 80 to 85% of the time. Though it can also come off of the Circumflex or a PDA can come off of both (thus making it a balanced system).
Additionally the Posterior Left Ventricular Arteries (PLVs) come off of the RCA

 

[knxemt1983]

RCA more often than not is posterior

ok so...


lad- anterior, septal, some inferior
circumflex- lateral, some posterior
rca- right, inferior, and some posterior

anything else anyone?

 

[silver]

ok so...


lad- anterior, septal, some inferior
circumflex- lateral, some posterior
rca- right, inferior, and some posterior

anything else anyone?

look at some of the anatomy of the heart
http://en.wikipedia.org/wiki/Coronary_circulation

Know your coronaries. Its helpful to understand RVI, why you get arrhythmias with RCA and the like.

 

[knxemt1983]

look at some of the anatomy of the heart
http://en.wikipedia.org/wiki/Coronary_circulation

Know your coronaries. Its helpful to understand RVI, why you get arrhythmias with RCA and the like.

reading it now, thanks. I didn't think about wiki

 

[TomB]

Typically we associated LAD with anterior, RCA with inferior and LCX with lateral (occasionally inferior). One would think that acute STEMI would be documented as evenly distributed in the distribution of the three main epicardial coronary arteries (33%, 33%, 33%) but he reality is that the standard 12-lead ECG does a relatively poor job examining the heart in the distribution of the LCX so many of these are misreported as NSTEMI ("anterior ischemia" as opposed to isolated posterior STEMI). As a result we "catch" more inferior and anterior STEMIs.

 

[daj72]

STEMI Localisation

I think this shows it very good.
http://youtu.be/cg2KY7bzR2s