Occlusion and parent artery stenosis. Medical search. Frequent questions

The composite primary efficacy end point of complete aneurysm occlusion (Raymond-Roy 1) without parent artery stenosis or aneurysm retreatment was achieved in 84.7% (95% CI, 78.6%-90.9%) of patients. (escholarship.org)
The Aneurysm Study of Pipeline In an observational Registry (ASPIRe) study prospectively analyzed rates of complete aneurysm occlusion and neurologic adverse events following PED treatment of intracranial aneurysms. (nih.gov)
However, studies on aneurysm occlusion, recurrence, and procedural complication rates of SAC treatment for ruptured tiny intracranial aneurysms were limited and heterogeneous ( 9 , 10 ). (frontiersin.org)
Complications and aneurysm occlusion rates in the aneurysm size groups were compared between PED alone and PED combined with coiling patients. (bmj.com)
For small aneurysms, there was no difference in the aneurysm occlusion rate between two groups (79.1% vs 88.4%, respectively), while there was a significant increase in the ischaemic complication rate (8.3% vs 19.3%, respectively, p=0.0001). (bmj.com)
At the 1-year follow-up (n=5) stable complete aneurysm occlusion was seen in two patients. (providence.org)
To evaluate the stability of aneurysm occlusion at follow-up angiography after endovascular treatment (EVT) with detachable coils in intracranial berry aneurysms. (rsna.org)
The efficacy of endosaccular aneurysm occlusion in alleviating neurological deficits produced by mass effect. (rsna.org)

The deep penetrating arteries are small, nonbranching end arteries (usually smaller than 500 μm in diameter), which arise directly from much larger arteries (eg, the middle cerebral artery, anterior choroidal artery, anterior cerebral artery, posterior cerebral artery, posterior communicating artery, cerebellar arteries, basilar artery). (medscape.com)
Intraoperatively removal of the foreign body demonstrated a laceration to the M1 branch of the middle cerebral artery (MCA), which was successfully repaired. (surgicalneurologyint.com)
Here, we describe to our knowledge, the first reported case of a penetrating craniocerebral nail-gun injury causing vascular injury to the M1 branch of the middle cerebral artery (MCA). (surgicalneurologyint.com)
Catheter angiography was performed, demonstrating a wedge-shaped area of mildly delayed arteriovenous contrast transit time involving the posterior left middle cerebral artery (MCA) territory ( Fig. 50.3 a, b). (thoracickey.com)

Subjects between the ages of 19 to 80 years having a single targeted intracranial aneurysm that is located in the internal carotid artery (ICA) distribution up to the terminus with a neck ≥4 mm or no discernible neck and an aneurysm size ≥10 mm (including saccular, fusiform, and dissecting aneurysms) are eligible for participation in the study. (bmj.com)
This maneuver is considered safer than exchanging these devices with the guidewire in the common carotid artery (CCA) because it lowers the risk of prematurely crossing the internal carotid artery (ICA) lesion or showering embolic material into the intracranial circulation. (consensus.app)
The blood does not collect within a preexisting space, but rather creates a space at the Fractures of Cranial Base In fractures of the cranial base, the internal carotid artery may be torn, producing an arteriovenous fistula within the cavernous sinus. (gov.gy)
Multiple embolic infarction and total occlusion of the left internal carotid artery (ICA) was occurred one day later. (neurointervention.org)
Spontaneous recanalization of occluded internal carotid artery (ICA) does not frequently occur. (neurointervention.org)

Immediate angiographic occlusion was achieved in 4 and flow reduction, in another 15 aneurysms. (ajnr.org)
Treatment of large, wide-neck, or otherwise untreatable aneurysms with functional reconstruction of the parent artery may be achieved with relative safety using dedicated flow-modifying devices with or without adjunctive use of intrasaccular coil packing. (ajnr.org)
Simultaneously, previous studies indicated that the stent-assisted coiling (SAC) technique was associated with a higher complete occlusion rate and lower recurrence rate at follow-up compared with coiling alone (CA) in ruptured intracranial aneurysms ( 7 , 8 ). (frontiersin.org)
Since its debut as an endovascular aid, Neuroform stents (Stryker, Kalamazoo, MI, USA) were quickly followed by other stents, and each stent targets aneurysms of specific shapes and parent patterns ( 11 ). (frontiersin.org)
Conclusion Use of the PED with adjunctive coils can significantly improve the occlusion rate of medium aneurysms, without increasing the total complication rate. (bmj.com)
Endovascular reconstruction of unruptured intradural vertebral artery dissecting aneurysms with the Pipeline embolization device. (providence.org)
BACKGROUND: Dissecting aneurysms of the vertebral artery (VA) are difficult to treat using current surgical and endovascular techniques. (providence.org)
OBJECTIVE: To analyze retrospectively the efficacy and safety of flow diverters in the treatment of dissecting aneurysms of the vertebral artery. (providence.org)
This study aimed to evaluate the effectiveness, safety, and technical considerations of flow diverter (FD) treatment using a Flow Re-direction Endoluminal Device (FRED) for unruptured intracranial vertebral artery dissecting aneurysms (VADAs). (neurointervention.org)
True visceral artery aneurysms are potentially complex to treat but with advances in technology and increasing interventional radiology expertise over the past decade are now increasingly the domain of the interventional radiologist. (springeropen.com)
Abdominal visceral artery aneurysms (VAAs) are complex to manage but are increasingly the domain of the interventional radiologist. (springeropen.com)
Visceral artery aneurysms by definition generally involve a pathological dilatation of branches of the coeliac, superior mesenteric, inferior mesenteric, or renal arteries. (springeropen.com)
Rupture is seen more commonly in hepatic, pancreatic and SMA aneurysms than renal and splenic artery aneurysms (Rijn et al. (springeropen.com)
The safety and feasibility of simple coil embolization and stent deployment for the treatment of posterior inferior cerebellar artery (PICA) aneurysms, as well as their radiologic and clinical results, have not been adequately understood. (koreamed.org)
Aneurysms of the proximal posterior inferior cerebellar artery (PICA) are rare. (koreamed.org)
Complete occlusion of the aneurysm sac and neck was achieved in 148 aneurysms, subtotal occlusion in 18, and incomplete occlusion in three. (rsna.org)
Currently, the stent has been used widely in various diseases such as cervical carotid stenosis, intracranial stenosis, dissecting aneurysms and intracranial wide-neck aneurysms, where stents are placed across the neck of an aneurysm to allow for coil deployment into the aneurysm without compromising the parent vessel. (neurointervention.org)
Unfortunately, the physiologic mechanism of these serious procedure-related complications, such as instent stenosis or subacute in stent thrombosis after stenting and coiling of aneurysms, and their influence on overall long-term outcomes is unknown. (neurointervention.org)

Left carotid angiography documented a distortion of normal anatomy due to haematoma mass effect, an extravasation of contrast from a proximal branch (probably the tonsillar artery) of the facial artery that had been wired during the catheter exchange. (consensus.app)
Subclavian steal phenomenon (or syndrome) originates from severe stenosis or occlusion of the proximal subclavian artery resulting in the reversal of blood flow in the ipsilateral vertebral artery (VA) to perfuse the limb. (thoracickey.com)
Blood flows retrogradely from the brain (via blood from the contralateral VA or the circle of Willis) to the limb instead of anterogradely from the heart directly to the limb as a result of a hemodynamically significant proximal subclavian stenosis or occlusion. (thoracickey.com)
Especially, if dissecting aneurysm of proximal PICA is associated with small caliber PICA and stenosis of ipsilateral vertebral artery orifice (VAO), endovascular coiling with saving of PICA is not always easy. (koreamed.org)
We performed bifemoral puncture and chose additional route from right vertebral artery to left vertebrobasilar junction for retrograde approach and deployment of LVIS Jr. intraluminal support at proximal PICA. (koreamed.org)
5) The authors present a successful but challenging case of stent-assisted coil embolization of a ruptured left proximal PICA dissecting fusiform aneurysm with left vertebral artery orifice (VAO) stenosis using the contralateral vertebral artery (VA) approach for stenting and the ipsilateral VA approach for coil embolization. (koreamed.org)
No intracranial proximal large artery occlusion was seen on intracranial CTA ( Fig. 50.1 b). (thoracickey.com)
At the beginning of 4 weeks' gestation, the embryonic heart includes the primary heart tube that eventually forms the ventricles, their outflow tracts, and the proximal great arteries. (medscape.com)

Endovascular reconstruction of unruptured intradural vertebral artery " by Anna Luisa Kühn, Peter Kan et al. (providence.org)
Treatment of symptomatic subclavian steal from subclavian stenosis may be performed via open, endovascular, or a combined/hybrid approach. (thoracickey.com)
Patients with symptoms of subclavian steal syndrome and findings of stenosis on imaging are considered candidates for endovascular revascularization. (thoracickey.com)

Lacunar stroke or lacunar cerebral infarct (LACI) is the most common type of ischemic stroke, resulting from the occlusion of small penetrating arteries that provide blood to the brain's deep structures. (wikipedia.org)
Cervicocephalic artery dissection can result in ischemic stroke or subarachnoid hemorrhage, affecting young or middle-aged adults [ 1 , 2 ]. (neurointervention.org)

At the beginning, lipohyalinosis was thought to be the main small vessel pathology, but microatheroma now is thought to be the most common mechanism of arterial occlusion (or stenosis). (wikipedia.org)
however, microatheroma now is thought to be the most common mechanism of arterial occlusion (or stenosis). (medscape.com)
The break-up of atherosclerotic plaques and energy stores cause subsequent blood clots which are the most common cause of acute arterial occlusion. (nordiclabs.com)
Growth of the genitalia includes epispadias and bladder chemistry several mechanical and chemical burns in infants at high risk of neurodevelopmental deficits with a decrease of pulmonary arterial occlusion in pediatric patients. (lowerbricktown.com)

Acute cerebral infarction was observed in the left posterior inferior cerebellar artery territory and a thrombus in the left vertebral artery V4 segment. (surgicalneurologyint.com)
CT angiography showed occlusion of the left vertebral artery at the level of the foramen transversum of Atlas, both vertebral arteries were similar in diameter, and the left intracranial vertebral artery and left posterior inferior cerebellar artery were depicted through the right vertebral artery [ Figure 1d ]. (surgicalneurologyint.com)
As compared to patients in Western countries, intracranial arterial dissections in Koreans occur most commonly in the posterior circulation, particularly in the vertebral artery (VA) [ 1 , 6 ]. (neurointervention.org)

Overall control angiographic occlusion rates were as follows: 87.8 % (72/82) total occlusion, 8.5 % residual aneurysm filling, and 3.7 % residual neck filling. (nih.gov)
Of the 169 cases, last follow-up angiography showed total occlusion in 133 cases, subtotal in 30, and incomplete in six. (rsna.org)
A very small recurrence may be observed at the level of the neck of the aneurysm at long-term follow-up angiography despite achieving total occlusion initially with detachable coils. (rsna.org)

The Oxidised LDL test is designed to detect various cardiovascular conditions including Coronary Artery Disease (CAD) and atherosclerosis. (nordiclabs.com)
The DNA of 471 subjects [133 subjects with angiographically documented left main coronary artery disease (LMCAD), 241 subjects with more peripheral coronary artery disease (MPCAD) and 97 subjects self reported healthy (Controls)] was analyzed for the frequency of TaqIB and I405V polymorphisms in the gene coding CETP. (biomedcentral.com)
The evolution of coronary artery disease (CAD) is influenced by various genetic and environmental factors. (biomedcentral.com)
A 61-year-old female patient, who had coronary artery disease with a recent headache, tinnitus and dizziness visited our medical center. (neurointervention.org)

Occasionally, atheroma in the parent artery blocks the orifice of the penetrating artery (luminal atheroma), or atheroma involves the origin of the penetrating artery (junctional atheroma). (wikipedia.org)

4 - 11 Yet, the early application of stent-assisted aneurysm therapy was primarily focused on geometric reconstruction of the parent artery through improved coil packing of the aneurysm. (ajnr.org)
parent artery occlusion (PAO) (n=2), covered stent graft implantation (n=6) and intrasaccular coil embolization of pseudoaneurysm (n=1). (turkishneurosurgery.org.tr)
No aneurysmal bleeding, in-stent stenosis or thromboembolic complication was seen. (providence.org)
The patient was successfully treated with a stent and a thrombectomy, but the perforation of the external carotid artery (ECA) during neurointerventions remains a risk. (consensus.app)
At this point, a Tracker 14 microcatheter on a Dasher 14 microwire were used to pass through the stent and selectively catheterize the parent vessel in front of the ruptured branch. (consensus.app)
Stent placement in the left subclavian artery with femoral and radial access. (thoracickey.com)

Case Report: A 74-year-old woman, symptomatic for TIA's was found to have a severe (90%) left ICA stenosis by CT-Angiography. (consensus.app)
Moreover, the ipsilateral VAO showed severe stenosis (1.8 mm). (koreamed.org)
The CAD involving left main (LM) artery is a particular severe phenotype of CAD. (biomedcentral.com)

1 , 3 , 11 ] Embolic cerebral infarction after cervical spine repair surgery can lead to vertebrobasilar artery occlusion and associated serious complications. (surgicalneurologyint.com)

When no evidence of small vessel disease is found on histologic examination, an embolic cause is assumed, either artery-to-artery embolism or cardioembolism. (wikipedia.org)

Of 28 side branches covered by ≥1 device, the ophthalmic artery was absent immediately in 1 and at 6 months in another 2 cases. (ajnr.org)

Small areas of dura are supplied by other arteries: meningeal branches of the ophthalmic arteries, branches of the occipital arteries, and small branches of the vertebral arteries. (gov.gy)

1 - 3 Early experimental work suggested 3 potential mechanisms of action: improved anatomic reconstruction of the parent artery, functional modification of flow across the orifice of the aneurysm, and biologic repair of the aneurysm neck by neointimal overgrowth. (ajnr.org)

In cases of traumatic vertebral artery occlusion without an occlusive mechanism, parent artery occlusion may be considered in terms of recanalization risk, regardless of the need for repair surgery. (surgicalneurologyint.com)
We describe here a case of parent artery occlusion for cerebral infarction after spontaneous recanalization in traumatic vertebral artery occlusion that did not require cervical spine repair surgery. (surgicalneurologyint.com)

Thereafter, the left vertebral artery spontaneously recanalized, but no cerebral infarction was observed. (surgicalneurologyint.com)
Parent artery occlusion was performed to prevent further cerebral infarction due to distal embolization of the thrombus. (surgicalneurologyint.com)

Stenosis or occlusion of the arteries that supply blood to the kidneys (renal arteries) can result in chronic high blood pressure ( hypertension ). (medlineplus.gov)

All procedures were performed in the surgical operating room (without Digital Subtraction Angiography (DSA) equipment) under basic anesthesia through the femoral artery pathway. (biomedcentral.com)
The procedures were guided by transthoracic echocardiography (TTE) by establishing an orbit with a catheter through the femoral artery to thepatent ductus arteriosus,pulmonary artery and right ventricle. (biomedcentral.com)
A suitable ventricular septal defect occluder was placed using the femoral artery approach,and the treatment effect was evaluated by echocardiography after occlusion. (biomedcentral.com)
PDA closure guided by transthoracic echocardiography via femoral artery puncture is a minimally invasive procedure that avoids injuries due to radiation and contrast agents. (biomedcentral.com)
From March 2018 to February 2020, 32 children who underwent PDA occlusion through the femoral artery under the guidance of TTE were continuously selected in the Second Department of Cardiology, Beijing Children's Hospital, National Children's Medical Center. (biomedcentral.com)

Angiography at 6 months demonstrated complete occlusion in 17 and partial filling in 1 of 18 patients. (ajnr.org)
The frequency of vertebral artery injury in blunt cervical spine injury ranges from 19% to 39%,[ 1 , 4 , 10 , 11 ] which is not uncommon and should always be kept in mind when treating patients. (surgicalneurologyint.com)
This study focused on this specific group of pediatric patients and explored the safety and effectiveness of percutaneous occlusion of PDA in children under transthoracic ultrasound guidance. (biomedcentral.com)
The purpose of this study was to clarify the criteria for initial treatment of chronic subdural hematoma (CSDH) by com-paring the backgrounds and post-treatment courses of patients who underwent drainage or middle meningeal artery (MMA) emboliza-tion for CSDH. (go.jp)
Safety and Efficacy of Tenecteplase Compared with Alteplase in Patients with Large Vessel Occlusion Stroke: A Prespecified Secondary Analysis of the ACT Randomized Clinical Trial. (ottawaheart.ca)
Long-Term Survival, Cardiovascular, and Functional Outcomes after Minimally Invasive Coronary Artery Bypass Grafting in 566 Patients. (ottawaheart.ca)
Thus, the LM stenosis localized patients at the higher risk of cardiovascular events because of the extent of jeopardized myocardium and, therefore, has been considered as the most prognostically important coronary lesion. (biomedcentral.com)

Post-embolisation angiography documented occlusion of the vessel and the absence of any further contrast extravasations. (consensus.app)

The term ventricular inversion includes understanding that the aorta arises from the right ventricular outflow tract in a position anterior to the pulmonary trunk that arises from the left ventricle (ie, the commonly accepted elementary definition of transposition of the great arteries). (medscape.com)

The Society of Vascular Surgery (SVS) set guidelines to manage VAAs based on the affected artery, size of the lesion, rate of growth, the associated symptoms, and the potential pregnancy status (Chaer et al. (springeropen.com)
Contrast-enhanced MRA of the extracranial arterial system showed no upstream arterial lesion to explain this, with normal appearance of the extracranial arteries ( Fig. 50.2 e). (thoracickey.com)

The primary effectiveness endpoint is the percent of subjects with 100% occlusion (Raymond Class 1) without clinically significant stenosis (defined as ≤50% stenosis) of the parent artery and any subsequent treatment of the target aneurysm at 12 months. (bmj.com)

The angiographic follow-up outcomes showed that the SAC group had a higher complete occlusion rate and lower recurrence rate (88.2 vs. 67.1%, 5.4 vs. 15.2%, P = 0.001). (frontiersin.org)

vertebral artery stenosis (n=1), vertebral artery pseudoaneurysm (n=3), vertebral artery occlusion (n=1) and iliac arteriovenous fistula (n=6). (turkishneurosurgery.org.tr)

Blockage of the arteries that carry blood to the brain (cerebral arteries) can cause a stroke . (medlineplus.gov)

For subgroup analysis, LVIS stents were associated with a significantly higher rate of complete occlusion ( P = 0.014) and a lower rate of intraprocedural rupture ( p = 0.021). (frontiersin.org)

Background: The external carotid artery (ECA) branches are often used to support the guidewire during removal of the diagnostic catheter and insertion of the guide sheath or catheter prior to performing neurointerventions such as carotid angioplasty and stenting (CAS). (consensus.app)

He found that most symptomatic lacunar strokes are due to the occlusion of penetrating arteries of 200-800 μm in diameter, whereas those with smaller-diameter penetrating artery infarcts tended to be asymptomatic. (medscape.com)

There was no shunt between the left pulmonary artery and the descending aortic artery, and the length of hospitalization was 3.4 ± 0.5 days. (biomedcentral.com)
Pulmonary stenosis and regurgitation, 75,66 trisomy 14 89 vsd. (lowerbricktown.com)

In this study, transthoracic echocardiography without radiation and contrast agents was used to complete percutaneous occlusion of pediatric PDA. (biomedcentral.com)

Another procedure, transcatheter device occlusion, can close abnormal openings or holes within the heart or blood vessels without surgery. (kidshealth.org)
Heart disease is the leading cause involve the blood vessels, the arteries. (realworldcomputing.uk)

There is no established treatment strategy for traumatic vertebral artery occlusion that does not require cervical spine repair surgery. (surgicalneurologyint.com)

The lacunar hypothesis proposes that (1) symptomatic lacunes present with distinctive lacunar syndromes and (2) a lacune is due to occlusion of a single, deep penetrating artery generated by a specific vascular pathology. (medscape.com)
Lacunes are caused by occlusion of a single penetrating artery. (medscape.com)

The complete occlusion rate at the last follow-up was 74.8% (77/103). (nih.gov)
Two cases showed progression from near complete occlusion and partial occlusion at 6 months to complete occlusion and near complete occlusion. (providence.org)
One cases showed unchanged near complete occlusion. (providence.org)
Complete occlusion rates were 78.3% at 6-month follow-up magnetic resonance angiography and 91.3% at 12-month. (neurointervention.org)

2012 ). A true aneurysm is a localized dilatation of the artery by more than 1.5 times the expected arterial diameter with involvement of all three layers of the arterial wall. (springeropen.com)

Fractures were observed in the left lateral mass and transverse process of Atlas and the left vertebral artery was occluded at the level of the foramen transversum of Atlas. (surgicalneurologyint.com)
We present a 61-year-old female with an unruptured intracranial aneurysm on the left superior hypophyseal artery. (neurointervention.org)

RESULTS: PED placement was achieved in all cases and immediate angiography follow-up demonstrated intra-aneurysmal contrast stasis with parent artery preservation. (providence.org)
Different strategies are divided into parent artery preservation and parent artery sacrifice techniques. (springeropen.com)
For preservation of narrow PICA with ipsilateral VAO stenosis, the contralateral approach and deployment of LVIS Jr. intraluminal support may be considered. (koreamed.org)

Critical carotid artery stenosis: diagnosis, timing of surgery, and outcome. (uchicago.edu)

Methods:Two hundred and sixty parents of epileptic child recruited from five separated university. (e-cep.org)

Alternatively, hypoperfusion is believed to be the mechanism when there is stenosis of the penetrating artery. (wikipedia.org)

This right ventricular angiogram shows a patient with transposition of the great arteries. (medscape.com)
Transposition of the great arteries is inherent in ventricular inversion and does not represent an additional abnormality. (medscape.com)

Flow diversion treatment using a FRED for unruptured intracranial VADAs proved feasible and safe, yielding satisfactory occlusion rates. (neurointervention.org)

There was no evidence of arterial irregularity or areas of stenosis to suggest a vasculitis or other vascular abnormality. (thoracickey.com)

Anatomy49

Organisms3

Diseases80

Chemicals and Drugs13

Analytical, Diagnostic and Therapeutic Techniques and Equipment88

Psychiatry and Psychology1

Phenomena and Processes22

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture1

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Named Groups2

Health Care22

Aneurysm occlusion8

Middle cerebr4

Internal caroti5

Aneurysms18

Proximal8

Endovascular3

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Arterial occlusion4

Posterior3

Total occlusion3

Coronary Artery4

Origin of the penetr1

Stent6

Severe3

Vertebrobasilar1

Cardioembolism1

Ophthalmic artery1

Vertebral arteries1

Orifice1

Recanalization2

Infarction2

Renal arteries1

Femoral5

Patients7

Vessel1

Anterior1

Lesion2

Clinically1

Recurrence1

Arteriovenous fistula1

Stroke1

Stents1

Catheter1

Infarcts1

Pulmonary2

Pediatric1

Blood vessels2

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Lacunes2

Complete4

Diameter1

Left2

Preservation3

Diagnosis1

METHODS1

Hypoperfusion1

Ventricular2

Treatment1

Vascular1