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ICU > Cardiac Anatomy > Flashcards

Cardiac Anatomy Flashcards

1
Q

Draw the coronary arteries

A

.

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2
Q

Describe R, L and Co dominant coronary circulation. How common is each type?

A

R: PDA from RCA (85%)
L: PDA from LCx (8%)
Co: PDA from both (7%)

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3
Q

What does the LAD supply?

A

Anterior 2/3 of interventricular septum

Anterior LV

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4
Q

What does the LCx supply?

A

Lateral and Posterior LV

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5
Q

What does the R acute artery supply?

A

RV

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6
Q

What does the PDA supply?

A

Posterior 2/3 of RV+LV

Posterior 1/3 of interventricular septum

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7
Q

Which artery supplies the SA and AV nodes

A

RCA (SA from LCA in 40% of cases)

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8
Q

What are the layers of the heart from outside to inside?

A 
Fibrous pericardium
Parietal pericardium
Visceral pericardium
Epicardium 
Myocardium
Endocardium
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9
Q

Which valves have 2 leaflets?

A

Just mitral (bicuspid)

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10
Q

Draw the conduction pathway of the heart

A

.

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11
Q

What parts of the heart are innervated by the sympathetic nervous system?

A

SA, AV, Ventricular myocardium, vasculature

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12
Q

What parts of the heart are innervated by the parasympathetic nervous system?

A

SA, AV, Atrial myocardium

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13
Q

What are the surface landmarks of the R border of the heart?

A

Right 3rd-6th costal cartilage just beyond the R side of the sternum

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14
Q

What are the surface landmarks of the inferior border of the heart?

A

Right 6th costal cartilage to the apex

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15
Q

What are the surface landmarks of the apex of the heart?

A

Left 5th intercostal space 9cm from midline

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16
Q

What are the surface landmarks of the L border of the heart?

A

Apex to lower 2nd costal cartilage 2cm from sternal margin

17
Q

Where does the coronary sinus lie?

A

Posterior AV groove

18
Q

Which 5 cardiac veins feed the coronary sinus?

A
  • Great Cardiac vein (LAD)
  • Middle Cardiac vein (PDA)
  • Small Cardiac Vein (RCA)
  • Posterior vein of Left Ventricle
  • Oblique vein of Left Atrium
19
Q

Which arteries do the acute and obtuse marginal arteries come off of?

A

Obtuse marginal - LCx

Acute marginal - RCA

20
Q

How is “Proximal” LAD defined

A

Area of LAD between its origin and the first diagonal branch (LADD1)

ICU (4 decks)

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