What is IMA dissection?
What is IMA dissection?
Internal mammary artery graft dissection is a rare condition and is usually caused by iatrogenic complications or mechanical stress.
What is IMA stenosis?
Mesenteric artery stenosis is the narrowing of the arteries that supply blood to the intestines. These arteries are called the mesenteric arteries.
How is internal mammary artery harvested?
The internal mammary artery (IMA) has consolidated itself as the preferable graft for coronary artery bypass surgery (CABG). Classically harvested through a sternotomy it is one of the initial but essential steps in CABG surgery.
What is a skeletonized graft?
The predominant practice in cardiac surgery is to harvest the arterial conduit as a pedicled graft. Skeletonized conduits are arteries that have been dissected from all surrounding tissues, including accompanying veins, fascia, lymphatics and adipose tissue, leaving the adventitia as the outermost layer.
Can you stent the IMA?
To our knowledge, this is the largest case series to date reporting the use of an IMA stent to improve collateral circulation in patients with CMI. This technique of IMA stenting has also been corroborated by a German group who reported technical success and excellent short term results in three patients.
What level is the IMA?
L3
In human anatomy, the inferior mesenteric artery, often abbreviated as IMA, is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the distal transverse colon to the upper part of the anal canal.
What artery supplies the superior mesenteric?
| Superior mesenteric artery | |
|---|---|
| Source | abdominal aorta |
| Branches | inferior pancreaticoduodenal middle colic right colic intestinal branches (jejunal, ileal) ileocolic |
| Vein | superior mesenteric vein |
| Supplies | intestine |
How long does a mammary artery bypass last?
Coronary artery bypass graft surgery usually lasts 3 to 6 hours. But it may take longer depending on how many blood vessels are being attached. Blood vessels can be taken from your leg (saphenous vein), inside your chest (internal mammary artery), or your arm (radial artery).
How many mammary arteries are there?
In order to support this rate of production, the cardiovascular system provides arterial support to each breast from two main arteries: the internal mammary and the lateral thoracic arteries.
What is Lima harvesting?
The first is the pedicled LIMA harvesting. In this technique, LIMA is excised together with the surrounding tissues. The LIMA that comprises intrathoracic fascia, veins around the artery, adipose tissue and sometimes muscular tissue is called a pedicled LIMA.
How do you dissection an ima artery?
Isolate the medial aspect of IMA then progress over the superficial surface toward its lateral side securing its branches with metal clips just over the IMA. Dissection is carried out along the entire course of the artery. The artery is harvested as a pedicle including the fascia, muscle, connective tissue, and both veins
What is the proximal segment of the IMA?
The Proximal Segment of IMA Here just in front of the subclavian vein the two branches (the thymic branch and the first intercostal artery must be ligated to avoid the so-called steal phenomenon It is important to spare the pericardiacophrenic artery as it is a major blood supply to the phrenic nerve.
Where is IMA located on the chest wall?
IMA may be visually identified quite well between the first rib and the third intercostal space where it runs on the parietal pleura. From the third rib to its bifurcation, IMA runs between the chest wall and transversus thoracis where artery and the veins cannot be visualized very well and but still can be manually palpated.
How is a distal dissection carried out?
Dissection is carried out along the entire course of the artery. The artery is harvested as a pedicle including the fascia, muscle, connective tissue, and both veins Permanent downward traction facilitates the distal dissection. Finally, the pedicle has been separated from the chest wall.
