Thoracic Angiology Flashcards
what branches does the ascending aorta produce?
- right and left coronary
Where does the right coronary artery travel?
- Sinoatrial nodal artery is first branch to SA
- Second is typically a conus branch
- Third is the atrial branch
- Almost always right marginal
- Travels to diaphragmatic surface of heart to produce:
- Posterior interventricular artery (largest)
- Right posterolateral artery
- AV nodal artery
Left coronary artery path and branches?
- Travels supereiorly around the heart to the posterior aspect
- Anterior interventricular artery (LAD)
- Conus branch
- Lateral artery
- Interventricualr septal branches
- Circulmflex artery
- left marginal
- posterior left ventricular
What is a coronary artery bypass graft?
- Done when the coronary artery is obstructed and needing replacement
- Great saphenous vein is used as it is comparable diameter to coronary arteries and easily dissected from the leg
- Can also use radial artery
What does the bulk of the blood supply to the conducting system of the heart?
Anterior interventricular (LAD)
What is a coronary angioplasty?
- insertion of a small balloon catheter into lumen of coronary artery
- Inflation of the catheter flattens the obstructing plaque against wall and increases the size of lumen
Branches from the arch of the aorta?
- Brachiocephalic trunk
- right common carotid
- right subclavian
- Left Common Carotid
- Left Subclavian
start right “Bat” jump to left “shit” back to middle “crazy”
Branches from left subclavian artery?
- Vertebral
- Internal thoracic
- Thyrocervical trunk
- Costocervical trunk
VITamin C
Internal thoracic branches
- Anterior intercostal
- perforating branches to breast
- Medial mammary branches to breast
- Pericardiacophrenic (main supply to pericardium)
- Musculophrenic (terminal)
- Superior epigastric (terminal)
Where does the lateral thoracic come from?
Axillary artery and this will make lateral mammary arteries
What are the unpaired visceral branches of the descending aorta?
- Mediastinal
- Esophageal
- Pericardial
What are the paired lateral visceral branches of the descending aorta?
- Right bronchial
- Left bronchial
What are the paired segmental parietal branches from the descending aorta?
- Posterior intercostal
- Dorsal branch: supply back mm
- Collateral branch: runs on superior edge of rib below
- Lateral cutaneous
- lateral mammary branch to breast
- Subcostal Artery
What artery does NOT fit into the three categories of branches off of the descending aorta?
Superior Phrenic
Right pulmonary artery branches?
- superior lobar artery to superior lobe
- Middle lobar
- Inferior lobar
What is the characteristic of the blood being carried by the pulmonary arteries?
Deoxygenated, it is coming from the (systemic circulation) right ventricle to pick up oxygen
What is a pulmonary embolism?
- Obstruction of pulmonary artery by an embolus such as blood clot, globule, or air bubble
- It usually travels from a vein through the right side of heart into pulmonary artery
What do pulmonary veins do and describe the location?
- Empty into left atrium
- 2 on right 2 on left
- 2 are superior and 2 are inferior
What vein empties into the right atrium directly?
- Anterior cardiac vein
Where does the great cardiac vein originate and travel to?
- Originates on anterior part of heart btw right and left vents
- Travels with anterior interventricular artery
Where does middle cardiac vein travel and sit?
- Travels posterior aspect of heart btw right and left vent
- Travels with Posterior interventricular artery
- Drains into coronary sinus which drains into right atrium
Where does small cardiac vein travel and drain?
- travels along inferior border of heart, rarely seen
- Travels with right marginal artery
- Drains into coronary sinus
What is function of azygos vein?
- Drains the right side posterior intercostal veins and drains into SVC
- right side has single azygos vein
Where does the thoracic duct originate from?
- Chyle cistern in the abdomen
- No branches in the thoracic cavity
Where do axillary lymph nodes drain?
- subclavian lymphatic trunk into the right lymph duct or thoracic duct
