Posterior descending artery

Posterior descending artery
Posterior descending artery
	Base and diaphragmatic surface of heart. (Posterior descending artery not visible, but it runs near the middle cardiac vein, which is labeled at the bottom.)
	ARTERIES:; RCA = right coronary; AB = atrial branches; SANB = sinuatrial nodal; RMA = right marginal; LCA = left coronary; CB = circumflex branch; LAD/AIB = anterior interventricular; LMA = left marginal; PIA/PDA = posterior descending; AVN = atrioventricular nodal; ; VEINS:; SCV = small cardiac; ACV = anterior cardiac; AIV/GCV = great cardiac; MCV = middle cardiac; CS = coronary sinus
Details
Source	right coronary artery
Vein	middle cardiac vein, posterior interventricular vein
Supplies	ventricles; interventricular septum
Identifiers
Latin	ramus interventricularis posterior arteriae coronariae dextrae
TA98	A12.2.03.108
TA2	4138
FMA	3840
	Anatomical terminology [edit on Wikidata]

The posterior interventricular artery (PIV) (or posterior descending artery (PDA)) is an artery running in the posterior interventricular sulcus to the apex of the heart where it meets with the anterior interventricular artery. It supplies the posterior 1/3rd of the interventricular septum. The remaining anterior 2/3rds is supplied by the anterior interventricular artery which is a septal branch of the left anterior descending artery, which is a branch of left coronary artery.

It is typically a branch of the right coronary artery (70%, known as right dominance). Alternately, the PIV can be a branch of the circumflex coronary artery (10%, known as left dominance) which itself is a branch of the left coronary artery. It can also be supplied by an anastomosis of the left and right coronary artery (20%, known as co-dominance).^[2]

Variants have been reported.^[3]

Additional images

Human heart with coronary arteries

References

^ Nerantzis CE, Lefkidis CA, Smirnoff TB, Agapitos EB, Davaris PS (1998). "Variations in the origin and course of the posterior interventricular artery in relation to the crux cordis and the posterior interventricular vein: an anatomical study". Anat. Rec. 252 (3): 413–7. doi:10.1002/(SICI)1097-0185(199811)252:3<413::AID-AR9>3.0.CO;2-9. PMID 9811219. {{cite journal}}: Unknown parameter |month= ignored (help)CS1 maint: multiple names: authors list (link)
^ Fuster, V (2001). Hurst's The Heart (10th ed.). McGraw-Hill. p. 53. ISBN 0-07-135694-0. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
^ Topaz O, Holdaway B, Bailey NT, Vetrovec GW (1997). "Anatomic variant of the posterior interventricular coronary artery: implications for coronary angioplasty in acute myocardial infarction". Clin Anat. 10 (5): 303–6. doi:10.1002/(SICI)1098-2353(1997)10:5<303::AID-CA2>3.0.CO;2-R. PMID 9283726.{{cite journal}}: CS1 maint: multiple names: authors list (link)

External links

. GPnotebook https://www.gpnotebook.co.uk/simplepage.cfm?ID=-456130501. {{cite web}}: Missing or empty |title= (help)
Anatomy figure: 20:04-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Posterior view of the heart."
Image
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Image at guidant.com

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[pmid9811219-1] Nerantzis CE, Lefkidis CA, Smirnoff TB, Agapitos EB, Davaris PS (1998). "Variations in the origin and course of the posterior interventricular artery in relation to the crux cordis and the posterior interventricular vein: an anatomical study". Anat. Rec. 252 (3): 413–7. doi:10.1002/(SICI)1097-0185(199811)252:3<413::AID-AR9>3.0.CO;2-9. PMID 9811219. {{cite journal}}: Unknown parameter |month= ignored (help)CS1 maint: multiple names: authors list (link)

[Hurst-2] Fuster, V (2001). Hurst's The Heart (10th ed.). McGraw-Hill. p. 53. ISBN 0-07-135694-0. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)

[pmid9283726-3] Topaz O, Holdaway B, Bailey NT, Vetrovec GW (1997). "Anatomic variant of the posterior interventricular coronary artery: implications for coronary angioplasty in acute myocardial infarction". Clin Anat. 10 (5): 303–6. doi:10.1002/(SICI)1098-2353(1997)10:5<303::AID-CA2>3.0.CO;2-R. PMID 9283726.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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