Heart & Aorta Basics
Where does blood go to pick up oxygen?
Then Lungs
What is the main artery carries oxygen rich blood away from the heart?
The aorta
What harmful substances does cigarette smoke introduce into the body?
Free radicals and toxic chemicals.
Do thoracic aortic aneurysms always cause symptoms?
No. They often grow slowly without symptoms.
What are the two types of surgery discussed in the slides?
Open surgery and TEVAR.
What are the four main components of blood?
Red blood cells, white blood cells, platelets, and plasma.
What is a thoracic aortic aneurysm?
A balloon-like bulge in the wall of the thoracic aorta.
Which protein helps the aorta stretch and snap back?
Elastin
Name two risk factors listed in the slides.
Any two: smoking, high blood pressure, or genetics and syndromes.
What scans are used to monitor aneurysm growth before surgery?
CT scans.
Which ventricle sends oxygen-rich blood into the aorta?
The left ventricle.
What is the inner layer of the aorta called?
The tunica intima.
Which protein acts like a safety net to keep the aorta from stretching too far?
Collagen
What type of pain can occur when an aneurysm ruptures or the aorta dissects?
Sudden, tearing pain in the chest, back, or abdomen.
What replaces the affected section of the aorta during open surgery?
A synthetic graft.
What do the heart’s pacemaker cells do?
Send signals that help heart muscle cells contract together.
Which layer contains smooth muscle, collagen, and elastin?
The tunica media.
What enzymes break down collagen and elastin?
Matrix metalloproteinases, or MMPs.
Which two surgeons developed the Bentall procedure in 1968?
Hugh Bentall and Antony De Bono.
What does TEVAR stand for?
Thoracic Endovascular Aortic Repair.
What prevents blood on the left and right sides of the heart from mixing?
The interatrial and interventricular septa.
What does the tunica adventitia do?
Provides structure, support, and protection as the tough outer layer.
How does collagen and elastin breakdown contribute to aneurysm growth?
It weakens the aortic wall, allowing blood pressure to push it outward into a larger bulge
Who pioneered minimally invasive endovascular stent graft repairs in 1994?
Dr. Michael Dake.
Name three possible complications after surgery listed in the slides.
Any three: bleeding, heart attack, infection, loss of kidney function, pneumonia, stroke, or weakened legs.