The aorta is the thickest blood vessel that runs from the heart to the chest and abdomen and runs through the center of the body. It is about 3 cm in diameter at the chest and about 2 cm in the abdomen.
As arteriosclerosis progress in the large blood vessels, the elasticity of the inner wall of a blood vessel decreases, and various abnormalities are likely to occur.
An aortic aneurysm is a condition in which blood vessels get blobby like bumps due to factors such as high blood pressure added to the fragile inner wall of a blood vessel. Aortic dissection is a condition in which a part of the inner wall of a blood vessel get fissured and flaked.
- The large artery is a very important tube that connects heart to the whole body. "Large Artery Treatment Center" undertakes everything from diagnosis to treatment of this large artery disease with the latest technology. We provide the diversified treatments for large arterial diseases that require urgent treatment by the specialized team that transcends the boundaries of diagnosis and treatment departments.
- A team that highly professional staffs are mobilized consisting of Registered Nurse, Anesthesiologist, Radiological Technologist, Clinical engineer, Biomedical Laboratory Scientist, etcs including Cardiovascular Surgery and Vascular Surgery treat. Cardiovascular Surgery who specialize in surgical treatment and Vascular Surgery who specialize in medical treatment that uses a catheter complemente each other's technology and aim to provide more high quality specialized medical treatment. Furthermore, in cooperation with the Radiation Oncology, critical care center, and cardiology department, we receive patients 24 hours a day, 365 days a year.
- For the first time in Yokohama City, we completed a "hybrid operation room" that combines an operation room and a tube imaging device. We prepare an environment that can accept various operative procedures from intraductal treatment (medical treatment) using catheters and stent grafts to laparotomy and thoracotomy procedures.
Since many large arterial diseases are highly urgent, our center treats them 24 hours a day, 365 days a year. Large aneurysms may be large even without subjective symptoms such as chest or back pain. Please feel free to contact us if you have any questions, as you can easily inspect with a CT scan.
Such as Cardiovascular Surgery, Vascular Surgery, and Emergency and Critical Medicine work together beyond the boundaries of diagnosis and treatment department to provide treatment that tailor to the patient's situation from a wide range of options. In addition to the conventional Surgical treatment, we introduced a new treatment. "Stent-graft insertion" that use a catheter and "Hybrid treatment" incorporate stent-graft with Surgical surgery. This treatment reduce the burden of patients and we are aiming to establish a treatment method that we look ahead next 10 years.
What is Stent-graft insertion?
A disease in which one part of a large artery swells like a hump is called "aortic aneurysm". Surgical operation is generally performed by incising the site of the aneurysm (chest or abdomen) and implanting a human tube, but recently, for patients who have difficulty a Surgical operation, medical treatment called "Stent-graft insertion" is becoming widespread.
Stent-graft insertion uses a "stent-graft" that combines a synthetic tube (graft) with a metallic instrument (stent) to widen the narrowed tube. Inserting a thin tube (catheter) into the blood vessel from the base of the leg and carrying the stent-graft to the aneurysm, the blood vessel is protected over a wide area and reduces the risk of the aneurysm rupture. Since the incision is only about 4 to 5 cm in the part where the catheter is inserted, the burden on the body is small, and the operation time and the time required for rehabilitation into society shorten.
This center is a certified facility for implementing stent grafts
This center has been certified as a facility for endovascular treatment according to the thoracic large artery stent graft implementation standard and the abdominal aortic aneurysm stent graft implementation standard established by the Japan Stent Graft Implementation Standards Management Committee.
The blood vessel that carries blood from heart to the whole body is called an artery, and the thickest canal is called an large artery. The large arteries extend from heart through the middle of the body to the abdomen, and then branch toward the arteries of hands and feet. A disease in which one part of a large artery swells like an aneurysm is called a "aortic aneurysm," and the one that forms in the chest is called a "abdominal aortic aneurysm".
While the aneurysm is small, you receive regular medical examinations and use medicine and lifestyle habit to control the increase. However, if the diameter exceeds 4 cm, it makes them increase risk of rupture. If it ruptures and causes a large amount of blood in the body, it is difficult to save lives even with surgery, so treatment to prevent the rupture is required.
Stent-graft insertion for a thoracic aortic aneurysm is called "TEVAR". In TEVAR, the inside of the aneurysm is covered with a artificial vessel called a stent graft to block the blood from flowing into the aneurysm and prevent it from rupturing.
Of the aortic aneurysms, those that form in the abdomen are called "abdominal aortic aneurysms." An abdominal aneurysm is asymptomatic until it becomes large and ruptures. When it ruptures, and suddenly pain such as back pain becomes severe and unconscious. The rupture does not stop when once it happens.
Stent-graft insertion for abdominal aortic aneurysms is called "EVAR". The large arteries in the chest and abdomen differ greatly in thickness, shape and the endovascular pressure, so the type of stent graft that is used is also different from the TEVAR mentioned above.
If a CT scan reveals a rupture of abdominal aneurysm, an emergency EVAR surgery is performed immediately. A stent graft is placed into ruptured part in a short time to block the blood flowing to the aneurysm and suppress bleeding from the ruptured aneurysm.
At our hospital, we introduced this treatment method immediately in Yokohama City, and we have achieved good results without any deaths or serious complications.