Stent grafting technique using Matsui-Kitamura (MK) stent for patients with aortic arch aneurysm

Gen Thorac Cardiovasc Surg

Kanno

Ishikawa

2008

Objective. Our purpose was to examine the use of fully supported open stent grafting (OSG) with a MatsuiKitamura (MK) stent for treatment of distal arch aneurysm (DAA). Methods. Surgery was performed using a newly developed device in seven DAA patients (six men and one woman) from 58 to 86 years of age (mean, 73 years old) from August 2005 to June 2007. The aorta was transected at the arch between bracheocephalic artery and left subclavian artery under circulatory arrest with total cardiopulmonary bypass and selective cerebral perfusion; then the stent grafting (SG) system was inserted and positioned with a 14 Fr. pusher. The SG and a transected edge were then sutured and anastomosed with the arch graft. The surgery was completed by constructing three cerebral branches. Results. The mean SG diameter and length were 34.6 mm (range, 32-38 mm) and 150 mm (120-200 mm), respectively. The mean time of circulatory arrest time and surgery were 41 min (35-55 min) and 358 min (269-450 min), respectively. Simultaneous mitral valve replacement was performed in one patient. All surgeries were completed successfully, and complete thrombosis of the aneurysm was obtained. Paraparesis and respiratory failure occurred in one patient each, and one patient died of brainstem infarction 1 month after surgery.Conclusion. These initial results suggest that the OSG method is a useful surgical procedure for the treatment of DAA.

Section: Discussionmentioning

confidence: 99%

Fully supported open stent grafting applied with a Matsui-Kitamura (MK) stent in treatment of distal arch aneurysm

Gen Thorac Cardiovasc Surg

Kanno

Ishikawa

2008

“…9 The advantages of using curved MK stent-grafts for endovascular repair of TAAs located in the distal or proximal descending arch of the aorta have been described previously. 7,8 For PDA, usually located at the small bend of the distal aortic arch, a fl exible stent-graft should be used to avoid proximal endoleak, kinking, or injury to the aortic wall. It may be diffi cult to achieve PDA closure without endoleak using a rigid Z stent-based stent-graft because this type of stent-graft cannot be tightly fi tted into the curved aortic arch.…”

Section: Discussionmentioning

confidence: 99%

“…7,8 The stent-graft was constructed along the framework of the commercial MK stent (Kitamura, Kanazawa, Japan) using a polyester fabric. The stent comprised a single wire (diameter 0.3-0.4 mm) composed of a superelastic alloy (Memoalloy; Tokin, Tokyo, Japan) containing 51% nickel and 49% titanium by weight.…”

Section: Casementioning

confidence: 99%

Use of a Matsui-Kitamura stent-graft for endovascular repair of patent ductus arteriosus in an adult patient

Hamasaki¹,

Gen Thorac Cardiovasc Surg

Yaginuma³

et al. 2009

Open surgical repair of patent ductus arteriosus is difficult in the case of elderly patients because of calcification of the duct and the possibility of rupture. Furthermore, endovascular repair with the use of a coil or an occluding device poses problems such as residual shunt or migration of the device. We describe a case wherein closure of a large patent ductus arteriosus in an adult patient was achieved using a Matsui-Kitamura curved nitinol stent-graft.

“…To address this problem, we developed an OSG method that employs a MatsuiKitamura (MK) stent to fully support the graft. [8][9][10] We report a retrospective study of the initial efficacy and long-term results of this hybrid procedure in the treatment of TAAs involving the aortic arch and descending aorta.…”

Section: Long-term Results Of Open Stent-grafting Using a Matsui-kitamentioning

confidence: 99%

“…The risk of damage to the vessel wall during insertion may be reduced because the tip of the stent is bent and the graft is completely supported. MK stents have previously been used by others in transcatheter stent-grafting 8,9) but not, to our knowledge, in OSG.…”

Section: Discussionmentioning

confidence: 99%

Long-Term Results of Open Stent-Grafting Using a Matsui-Kitamura Stent to Treat Thoracic Aortic Aneurysm

Kanno

Takano

et al. 2015

ATCS

Purpose: We describe a retrospective study of initial and long-term outcomes with an open stent grafting (OSG) with a Matsui-Kitamura stent for treating thoracic aortic aneurysm. Methods: Between August 2005 and September 2013, 50 patients with aortic arch disease extending to the descending aorta underwent OSG. Circulatory arrest with total cardiopulmonary bypass and selective cerebral perfusion were used, and the aorta was transected between the brachiocephalic and left subclavian artery. The stent-graft was inserted, sutured to a transected aortic edge, and anastomosed to a four-branched arch graft. Preoperative, operative, and short-and long-term postoperative data were obtained from the patients' medical records. Results: The perioperative (within 30 days) mortality rate was 8%. Two patients (4%) had a stroke and 5 patients (10%) had a spinal cord injury resulting in paraplegia or paraparesis (1 patient each) or transient paraplegia (3 patients). Actuarial survival rates at 1, 3, 5, and 7 years postoperatively were 87.8%, 78.3%, 70.7%, and 65.3%, respectively; the rates of freedom from an aortic event were 100%, 89.1%, 82.2%, and 74.7%. There were no complications related to use of the stent-graft. Conclusion: Our OSG method provided durable results in patients treated for thoracic aortic aneurysm, with few adverse events.