Fang Xu,Feng Wang,Yong-Sheng Liu

Abstract

Key words: Stenosis of the brachiocephalic artery;Trans-carotid approach;Vascular stapler;Case report

INTRODUCTION

As the population ages and people's living standards gradually improve,the incidence of cerebrovascular disease in China is increasing annually,posing a serious threat to people’s health[1-4].Ischemic cerebrovascular disease is the main type of cerebrovascular disease,accounting for more than 70% of cerebrovascular disease cases.It mainly includes vertebrobasilar insufficiency,cerebral insufficiency,transient ischemic attack,and cerebral infarction,and its main cause is atherosclerosis[5,6].Regardless of the location,interventional therapy and open surgery are the standard methods of treatment.The stenosis or occlusion of the origin of the brachiocephalic artery has unique characteristics.If endarterectomy is used,making the incision in the neck makes it difficult to reach the target blood vessels and requires thoracotomy.These open surgeries are traumatic,risky,and difficult to perform.Interventional minimally invasive surgery has therefore become the main method to treat stenosis at the beginning of the brachiocephalic artery.The femoral artery approach is the most common approach used for endovascular exclusion of the aorta.However,in cases involving an abnormal aortic arch or obvious distortion of the arteries,the transfemoral approach is difficult to use because of its low success rate and high incidence of complications during the perioperative period.In addition to avoiding the occurrence of this situation and achieving faster and more effective hemostasis,we used a Perclose Proglide vascular stapler to suture the carotid puncture point.Herein,we report a case sustaining the possibility and safety of brachiocephalic arterioplasty through a carotid artery.It also illustrates the feasibility of suturing the carotid puncture site with a suturing device.

CASE PRESENTATION

Chief complaints

A 66-year-old man presented with intermittent dizziness for two years and aggravation for 10 d.

History of present illness

The patient have been smoking for more than 30 years,with more than 20 cigarettes a day.He had drunk for more than 40 years and has stopped drinking now.

History of past illness

The patient had a more than 10-year history of type 2 diabetes and severe diabetic eye disease with blindness in the left eye.The patient self-injected long-acting insulin subcutaneously,12 units per day.The patient denied having other diseases.

本文的研究主要基于費金、哈爾彭等人的《知識推理》(1995年)中引入了知識模型、公共知識和建立在程序基礎(chǔ)上的知識和計算等的認知邏輯。在范·本特姆的《動態(tài)邏輯探究》(1996年)中引入了動態(tài)邏輯系統(tǒng)，并結(jié)合坎普等人的《自然語言中的信息》(2008年)中有關(guān)信息流的研究，在借助蒙太古的《形式哲學》(1974年)的基礎(chǔ)上闡述了自然語言的動態(tài)邏輯在人工智能中的應(yīng)用和哲學闡釋。

Personal and family history

His father died of heart disease at the age of 72 years.His mother and children are healthy.

Physical examination upon admission

First admission to hospital in March 2018：On physical examination,the patient’s blood pressure in the left upper limb was 120/70 mmHg,and blood pressure was not detected in the right upper limb.The patient was conscious and able to answer questions fluently,no abnormalities were detected on a nervous system examination,and the right brachial artery and radial artery pulsations were not detected.

Second admission in October 2018：The pressures in the left and right upper limbs were 140/68 mm and 85/60 mmHg,respectively.The results of a nervous system examination were normal.The right radial artery pulsation could not be detected,but the left radial artery pulsation was accessible.The patient was conscious and could carry on a normal conversation but had slightly slurred speech.

Imaging examinations

Imaging studies including a computed tomography (CT) scan of the head,computerized tomography angiography (CTA) of the vessels of the head and neck,and cerebral angiography.Upon the first admission to hospital in March 2018,CTA of the vessels of the head and neck showed severe stenosis at the beginning of the brachiocephalic artery.A CT scan of the head showed no obvious abnormalities.Cerebral angiography showed that the stenosis of brachiocephalic artery had almost occluded it (Figure 1A).Upon the second admission in October 2018,a CT scan of the head revealed multiple cerebral infarctions in bilateral basal ganglia and the right lateral ventricle.CTA of the vessels of the head and cerebral angiography both showed severe stenosis in the brachiocephalic artery stent.Reverse blood flow through the right vertebral artery compensated for the right subclavian artery,and the left internal carotid artery was occluded.

Laboratory examinations

Laboratory examinations included routine blood tests,liver function,kidney function,electrolytes,coagulation function,routine stool,and urine tests and relevant immune factor tests,and no obvious abnormalities were found.Only blood lipid examination was abnormal (Table 1).

FINAL DIAGNOSIS

After a series of imaging examinations and laboratory tests,the patient was diagnosed with cerebral vascular stenosis caused by atherosclerosis (stenosis of the brachiocephalic artery).

TREATMENT

First admission to hospital in March 2018

In order to clarify the situation of vascular stenosis,we first performed cerebrovascular angiography.Cerebral angiography showed severe stenosis at the beginning of the brachiocephalic artery (Figure 1A).To improve the symptoms,including cerebral ischemia,and prevent cerebral stroke,interventional surgery was performed on March 19,2018.We placed an Express LD (8 mm × 37 mm) balloon expanding stent (Boston,United States) in the stenosis section (Figure 1B).After the operation,the patient’s dizziness significantly improved.His upper left arm blood pressure was 130/85 mmHg,his right upper arm blood pressure was 122/73 mmHg,and his right radial artery pulsation was detectable.

The patient continued oral aspirin (100 mg) and clopidogrel antiplatelet therapy (75 mg) after discharge.

Second admission in October 2018

In order to clarify the situation of vascular stenosis,we first performed cerebrovascular angiography.Cerebral angiography showed severe stenosis at the beginning of the brachiocephalic artery (Figure 1C).After clarifying the stenosis of blood vessels,we carefully studied the operation plan.During the operation,vascular access was conventionally established in the right femoral artery,and a 6F sheath tube was inserted.The guidewire and catheter were matched to reach the opening of the brachiocephalic artery.We repeatedly attempted but failed to use the guidewire to pass the stenosis segment.We believe that there were certain difficulties related to the surgical approach through the femoral artery,and we therefore determined that continuing attempts may have resulted in plaque detachment and affected the patency of distal cerebral blood vessels.Preoperative angiography confirmed that the patient’s right carotid artery was unobstructed and showed no obvious stenosis or plaque.Therefore,we decided to use a right carotid artery approach to complete the operation.First,we punctured the right common carotid artery with a miniature puncture needle according to the Roadmap (the puncture point was located approximately 1 cm below the bifurcation of the carotid artery).After a 6F short sheath was inserted,we replaced the V-18 guidewire with a vertebral artery catheter and reversed the blood flow through the stricture to reach the ascending aorta (Figure 1D).Along the guidewire,we sent an Evercross (6 mm × 60 mm) (EV3,United States)balloon into the stenosis place to pre-expand it (Figure 1E).We placed a Wallstent (9 mm × 30 mm) stent (Boston,United States) in the stricture,and we then performed another angiogram.We found residual stenosis in the stent (Figure 1F),and we therefore sent an Evercross (8 mm × 40 mm) balloon (EV3,United States) through to expand the stenosis (Figure 1G).Angiography showed that the position of the stent was satisfactory,and the blood flow rate returned to normal (Figure 1H).We sutured the neck puncture point with a vascular stapler (Perclose Proglide,provided by Abbott Vascular,United States) and then ended the operation.After the operation,the patient recovered well,his symptoms related to dizziness disappeared,and his right radial artery pulsation could be detected.The blood pressure of the left upper limb was 135/88 mmHg,while that of the right was 128/80 mmHg.A follow-up performed 6 mo after the operation showed that there were no ischemic symptoms,such as dizziness,and no pulse.

OUTCOME AND FOLLOW-UP

The patient continued oral aspirin (100 mg) and clopidogrel antiplatelet therapy (75 mg) after discharge.And we asked the patient to take the drug on time and in volume.A follow-up performed 6 mo after the operation showed that there were no ischemic symptoms,such as dizziness,and no pulse.

DISCUSSION

The brachiocephalic artery is the largest branch of the aortic arch and is also known as the brachial artery or the innominate artery.It extends distally into the right carotid artery and the right subclavian artery and supplies blood to the right cerebral hemisphere and right upper limb.Therefore,patients with brachiocephalic artery stenosis often have dizziness and no pulse in the right upper limb.Further development of this condition may lead to ischemic gangrene in the right upper limb and cerebral infarction caused by posterior circulation ischemia[7].Common causes of stenosis of the brachiocephalic artery include atherosclerosis,multiple arteritis,and radiation arteritis.There are several treatments for patients with ischemic cerebrovascular disease who exhibit significant ischemic symptoms or are not treated with medicine.Traditional endovascular stripping,intracranial and extravascular revascularization,or interventional endovascular treatment can be selected.Endovascular stripping is one of the earliest surgical procedures that can be used in extracranial cerebral vascular stenosis.It is the first choice for the treatment of carotid stenosis in developed regions,such as Europe and the United States[8,9].Several multicenter randomized controlled trials have confirmed the efficacy of endovascular stripping,such as the North American Symptomatic Carotid Endarterectomy Text[10],the European Carotid Surgery Test[11],the Asymptomatic Carotid Atherosclerosis Study,and the Asymptomatic Carotid Surgery Test.Resection of atherosclerotic plaques in the intima can reduce the incidence of cerebral infarction at low cost and with a high success rate.This is therefore one of the methods used to prevent and treat moderate and severe cerebrovascular stenosis[12].However,this operation is more traumatic and has higher requirements regarding the patient’s physical condition;it is therefore not suitable for patients with stenotic vessels that are too long or difficult to expose.Intracranial and extracranial revascularization can theoretically improve intracranial blood supply in patients with severe cerebral hemodynamic disorders;however,an international multicenter randomized controlled trial denied that this treatment method produced good effects.More recently,the Carotid Occlusion Surgery Study showed that the probability of recurrent cerebrovascular events occurring in patients undergoing bypass surgery has not decreased[13].Due to the deep and complicated location of the brachiocephalic artery,it is very difficult to expose the operative field during surgery.In contrast,endovascular interventional therapy is widely used because of its advantages,which include a small amount of trauma,a fast recovery,a high success rate,a low rate of operation-related complications,and high mid and long-term patency rates[14].Hüttlet al[15]reported 89 cases of brachiocephalic artery stenosis or occlusion treated with interventional therapy,and theirs is the largest case series published so far.The technical success rate was 96.6%,and the follow-up rate was 12%,with a follow-up period ranging from 12 to 117 mo.This shows that endovascular therapy is a simpler,safer,and more effective method for treating brachiocephalic artery stenosis.However,this approach is not perfect,and vascular stenting does have limitations.For example,in cases with inadequate brain protection,the incidence of postoperative cerebral infarction is higher[16-18].In addition,the costs of this treatment are higher.With the improvement of interventional devices and techniques,the incidence of related complications has been significantly reduced,and an increasing number of patients therefore choose vascular interventional therapy[19-21].

The femoral artery approach is the most common approach used for endovascular exclusion of the aorta.However,in cases involving an abnormal aortic arch or obvious distortion of the arteries,the trans-femoral approach is difficult to use because of its low success rate and high incidence of complications during the perioperative period.In addition,it is also difficult to apply the femoral artery approach in patients with thoracic aortic dissection,iliofemoral artery occlusive disease,or inguinal infection[22].For the patient in this case,we tried the femoral artery approach first,but we could not pass the guidewire through the lesion after repeated attempts because of severe restenosis in the stent.An approachviathe brachial artery and radial artery was also abandoned because of severe stenosis in the brachiocephalic artery,and his arterial pulsation was difficult to detect.Under these circumstances,the carotid artery approach,although unconventional,has become another option to establish vascular access.At present,no relevant articles have reported performing brachial arterioplastyviathis approach.Some scholars have suggested that[23,24]compared with the conventional femoral artery approach,the carotid artery approach can reduce the risk of embolism because it avoids an abnormal aortic arch (type III aortic arch,long aortic arch,severe atherosclerosis of aorta,deformed aorta,etc.).Possible complications of using the trans-carotid approach include local nerve injury,local hemorrhage,or hematoma.Patients with severe atherosclerosis of the common carotid artery or stenosis at the puncture site are not suitable for this treatment if they also have a history of neck surgery or radiotherapy[25].Bergeron[24]reported 52 cases in which carotid artery stenting was performedviathe carotid artery approach,achieving a technical success rate of 100%and no occurrence of stroke,cardiovascular events,or hemorrhage.Ghoshet al[26]reported performing endovascular exclusion of abdominal aortic aneurysmsviathe carotid artery and also achieved satisfactory results.In our case,it was difficult to establish vascular accessviaconventional approaches,and the carotid artery approach was therefore adopted.The operation was successful without any serious complications.Drawing on the literature and the cases presented in our work,we propose that the carotid artery approach,although unconventional,can be used to complete surgeries on intracranial,extracranial,cerebrovascular,and even large blood vessels.

However,the carotid artery approach has disadvantages.If the condition of the carotid artery is poor or the carotid pulse weak due to stenosis and occlusion,puncture will be difficult.Moreover,no brain-protecting device has been specially designed for the carotid artery approach,which can cause plaque detachment during the operation.Therefore,the selection of a carotid artery approach should be carefully considered in these cases.It is suggested that cerebral angiography results should be refined preoperatively to clarify the condition of the bilateral carotid arteries.When puncturing the target carotid artery,the puncture should be performed using Roadmap or ultrasound[27].On the one hand,this can clarify the puncture position and thereby avoid any damage to the carotid bifurcation.On the other hand,it can also avoid cerebral infarction caused by plaque detachment.

It is more difficult to apply compression hemostasis to a carotid puncture point than to the femoral artery.Bleeding and even subcutaneous hematoma can therefore easily occur.In severe cases,a huge cervical subcutaneous hematoma may even compress the esophagus,causing dyspnea[28].To avoid the occurrence of this situation and achieve faster and more effective hemostasis,we used a Perclose Proglide vascular stapler to suture the carotid puncture point.Previous studies have reported that the Proglide vascular stapler is mainly used in the endovascular treatment of large vessels with the femoral artery used as the puncture approach[29].Perclose prosglide vascular stitching devices can reduce postoperative recovery times and the time spent bed-bound.More importantly,it can also reduce subcutaneous hematoma and surgical scars[30].Patients undergoing endovascular intervention often take antiplatelet or anticoagulant drugs for a long time before surgery,and this increases the risk of hemostasis complications at the puncture point.Since the 1990s,vascular suturing devices have been used in coronary interventions performed through the femoral artery,in which they have been shown to have advantages,such as reduced hemostasis and bed rest times[30].Compared with traditional manual compression hemostasis,vascular suturing devices can also reduce the incidence of vagus nerve reflexes and deep venous thrombosis caused by excessive compression[31,32].The main factors affecting the suture success rate include self-factors,such as obesity,severe calcification of the target vessel wall,and severe tortuosity of the blood vessels,as well as the size of the sheath.Therefore,before using a vascular stapler,whether the above situation exists should be clarified.The product instructions included with the Proglide Vascular Stapler state that for patients undergoing interventional catheterization or treatment,a 5F to 21F sheath is suggested to be used.The suture is delivered percutaneously after surgery to suture the common femoral artery puncture site.In this case,this approach was used to suture the carotid puncture points;while this is beyond the scope of the described applications,there were no complications,such as vascular stenosis or subcutaneous hematoma formation.Finally,satisfactory hemostatic effects have been achieved.Compared with other hemostasis methods,such as manual compression hemostasis and vascular closure,using vascular suturing devices produces fewer complications[33,34].This method also helps to reduce the time during which the puncture points must be pressed,shortens bed rest times,and improves patient comfort.Therefore,the authors believe that it is appropriate to carefully use a vascular stapler for the cervical vascular puncture point.The surgeons must be able to use the vascular suture devices skillfully.The puncture site must be adequately anesthetized to avoid vagus nerve reflex caused by local pain.The operation must be performed carefully to achieve safe and effective use of the vascular suture devices and make patients more comfortable[35].

CONCLUSION

In summary,in patients with brachial artery stenosis,when the femoral artery approach is difficult,the carotid artery is an unconventional but safe and effective approach.At the same time,the use of vascular suturing devices to suture a carotid puncture point is also commendable.Although it is beyond the published scope of the application,when used cautiously,it can effectively avoid cerebral ischemia caused by prolonged artificial compression,and improper suturing can lead to stenosis of the puncture site and improper blood pressure,resulting in the formation of a hematoma.Finally,satisfactory hemostasis can be achieved.