Stented Vessel Research Articles

Highlights From the Circulation Family of Journals.

Highlights From the Circulation Family of Journals.

Neoatherosclerosis: from basic principles to intravascular imaging.

Development of new atherosclerotic lesions within the neointima of stented vessels has been recognized as a novel disease manifestation of atherosclerosis (neoatherosclerosis), often manifesting as in-stent restenosis (ISR) or in-stent thrombosis (ST). The pathobiology of this entity is still not fully understood and definite diagnosis is challenging owing to limitations in resolution of contemporary intravascular imaging modalities and lack of consequent histopathology correlation studies. Yet, intravascular imaging has emerged as the gold standard for the diagnosis of in-stent pathologies, the most routinely used modalities being intravascular ultrasound (IVUS) and optical coherence tomography (OCT). In this review, we will give a concise summary about the basic understanding and histological findings of neoatherosclerosis. We will focus on the description of in-vivo findings using IVUS and OCT, discussing advantages and pitfalls. Furthermore, recent developments regarding innovative molecular imaging techniques for a more precise and advanced examination of neoatherosclerotic plaques will be discussed.

A "Jail Escape Technique" (JET) for distal side branch wiring during provisional stenting: Feasibility and first-in-man study.

To evaluate the feasibility of a novel technique for achieving distal SB access and improve strut apposition during provisional stenting. While distal rewiring and stent expansion toward the side branch (SB) are associated with better results during provisional stenting of coronary artery bifurcation lesions, these techniques are technically challenging and often leave unopposed struts near the carina. The "Jail Escape Technique" (JET) is performed by passing the proximal tip of the SB wire between the main vessel (MV) stent struts and balloon before implantation, allowing the MV stent to push the SB wire against the distal part of the carina. The MV stent can then be deployed without jailing the SB wire. Distal SB access and strut distribution at the carina were tested in phantom and swine models. Stent distortion, dislodgement forces, and material damage were evaluated with tensile testing. Human feasibility was then tested on 32 patients. Preclinical testing demonstrated that the SB wire was located at the most distal part of the carina and no strut malapposition at the carina was present after balloon inflation. Stent distortion, dislodgement forces, or material damage were not affected. JET was successfully performed in 30 of 32 patients. No major adverse cardiovascular events occurred in any patient at 6-month follow-up. The "JET" enables distal SB access and eliminates strut malapposition at the carina. Further studies with larger numbers of patients are needed to further investigate this technique.

Systematic isolated post-dilatation of the side branch as part of the provisional stent technique in the percutaneous treatment of coronary bifurcations. CR12 Registry.

To analyse systematic isolated post-dilatation of the side branch as a part of provisional stent technique. 1960 angioplasties performed in two centres were prospectively registered, of which 382 were coronary bifurcations with a side branch>2mm. In centre A, isolated post-dilatation of the side branch was performed regardless its impairment after main vessel stenting. In centre B, side branch post-dilatation was performed only if it was severely affected after stent implantation. There was no difference between the two centres in the rate of side branch affection after stent implantation (A: 44.6 vs B: 49.3%, p=0.48) nor in the procedural success rate (A: 98.6% vs B: 96.7%, p=0.45). After one-year follow-up, a reduction of cardiovascular events was observed in centre A (A: 4.4% vs B: 10.4%, p=0.043) with a trend towards lower cardiac mortality (A: 2.2% vs B: 6.5%, p=0.093) and stent thrombosis (A: 0% vs B: 2.6%, p=0.077). There were no differences in the rate of myocardial infarction related to the treated artery (A: 1.4% vs B: 3.9%, p=0.29), or target lesion revascularization (A: 1.4% vs. B: 3.2%, p=0.45). Systematic isolated post-dilatation of the side branch in the provisional stent technique was associated with a high angiographic success rate, and a low rate of cardiovascular events during follow-up. Although the study design does not allow definitive conclusions, this strategy could be considered a valid option in some cases or even as part of the provisional stent technique.

Early clinical outcomes of a novel rheolytic directional thrombectomy technique for patients with iliofemoral deep vein thrombosis.

Rheolytic thrombectomy (RT) for acute iliofemoral deep vein thrombosis (DVT) with first-generation techniques is often incomplete and adjunctive conventional catheter-directed thrombolysis (CDT) is required in more than half of patients to achieve venous patency. From the prospective Bern Venous Stent Registry, we investigated rates of primary treatment success, primary patency, and post-thrombotic syndrome (PTS) from 40 consecutive patients (mean age 51 ± 19 years, 45 % women) with acute iliofemoral DVT, treated with a novel directional RT technology and stent placement. Overall, 24 patients were treated for native-vessel iliofemoral DVT (11 with single-session RT, 13 with bail-out RT after failed CDT) and 16 for iliofemoral stent thrombosis. Pulse-spray thrombolysis (r-tPA 10 mg) was performed in 29 (73 %) patients. The mean follow-up duration was 193 ± 132 days (minimum 90 days). Overall, primary treatment success of RT was 95 %; only two patients required adjunctive CDT to restore patency. In 24 patients with native-vessel DVT, six-month primary patency was 92 % (95 %CI 75-99 %), and 23 patients (96 %) were free from the PTS according to the Villalta score. In 16 patients with stent thrombosis, six-month primary patency was 63 % (95 %CI 35-85 %) and 50 % were free from PTS. Except for transient macroscopic haemoglobinuria in all patients, no other side effects were recorded. In patients with iliofemoral DVT of native or stented vessels, RT followed by stent placement appears to be effective and safe. The novel technique enables single-session DVT treatment in the majority of patients without the need for prolonged CDT.

Feasibility and usefulness of three-dimensional optical coherence tomography guidance for optimal side branch treatment in coronary bifurcation stenting

For the treatment of coronary bifurcation lesions, optimal guidewire (GW) recrossing after main vessel stenting is important for good stent apposition at the side branch (SB) orifice in kissing balloon inflation (KBI). We analyzed 150 bifurcation lesions treated with single stenting following KBI in the three-dimensional optical coherence tomography (3D-OCT) bifurcation registry study (2015-16) and a single center experience (2012-16). OCT examination was performed after GW recrossing to the SB and after KBI. Patients were divided into two-dimensional (2D, n=78) and 3D groups (n=72) according to 2D- or 3D-OCT guidance. GW recrossing position, jailing configuration of the stent over the SB (divided into Link-connecting type: stent link connecting to the carina and Link-free type: no stent link at the carina) and stent apposition were compared between the groups. Distal GW recrossing was achieved in 75.6% and 91.7% in the 2D and 3D groups, respectively (P=0.004). Compared with the 2D group, the incidence of incomplete stent apposition (ISA) toward the SB in the 3D group tended to be lower in the whole cohort (14.5±13.6% vs 10.0±9.0%, P=0.077), and was significantly lower in left main trunk bifurcations (18.7±12.8% vs 10.3±8.9%, P=0.014). Independent contributors to ISA were the Link-connecting type (β 0.089, P<0.001), distal GW recrossing (β -0.078, P=0.001), and age (β -0.0020, P=0.012). Optimal GW recrossing under 3D-OCT guidance is feasible and improves stent apposition, which may lead to a better clinical outcome in the treatment of bifurcation lesions.

Pulmonary Hypertension in Fibrosing Mediastinitis

SESSION TITLE: Pulmonary Hypertension: Causes and Outcomes SESSION TYPE: Original Investigation Slide PRESENTED ON: Monday, October 30, 2017 at 04:30 PM - 05:30 PM PURPOSE: Fibrosing mediastinitis (FM) can present with complex cardiovascular and pulmonary issues that pose diagnostic and therapeutic challenges. As part of a larger review of patients with fibrosing mediastinitis at our institution, we sought to better characterize mechanisms of pulmonary hypertension (PH) in patients with FM. METHODS: We queried and retrospectively reviewed medical records at the Mayo Clinic, MN of patients with FM-related PH (1998-2016). RESULTS: 56 FM patients - 34 females (median age 42; range (14-76)) and 22 males (median age 47; range (29-74)) were diagnosed with PH based on echo and/or right-heart catheterization (RHC). Average duration of in-person follow-up was 188 days, with a median f/u period of 580 days (range: 1-6099 days). 7 patients had RHC-confirmed PH at outside institutions; 23 patients underwent RHC at Mayo Clinic. Most RHCs were performed as part of planned vascular diagnostic procedures or inteventions, for example, selective angiography with or without dilatation or stenting of occluded vessels. 5 patients were found to have positive vasodilator response on RHC. On retrospective review, PH in FM patients was mainly attributed to FM alone (41 cases), FM in combination with other cardiopulmonary causes (14) and from valvular disease (1). Pulmonary arterial involvement was confirmed in 36 cases and pulmonary venous involvement was noted in 34 patients based on data from CT studies, angiograms, catheterization, ventilation-perfusion scans and documentation on outside records. Venous and arterial involvement was not assessed in all patients. Review of vena caval involvement, though frequent was not assessed for this review. Vascular interventions including dilatation of native vessels, in-stent stenosis and stent placement were performed in 23 cases. Death in 2 patients within a week of such interventions was likely attributable to procedure-related complications. CONCLUSIONS: Patients with FM span both sexes and all age groups. This orphan disease can present late and with complex cardio-pulmonary involvement. Our institution has cared for hundreds of FM patients with the aid of expert multi-disciplinary consultation and intervention often providing the only feasible options of palliative intervention. Our institution has previously reported on outcomes of Rituximab in FM, airway stents and vascular interventions in FM. As part of our efforts to analyze this cohort of patients, the data presented here is the largest review of PH in FM thus far. We hope to further analyze our cohort for date regarding outcomes of pharmacologic and non-pharmacologic interventions in FM. Other pertinent issues noted on our review were a high incidence of predominantly right-sided involvement, supraventricular tachycardias, friable and congested airways, chest pain and “hemi-autoppneumonectomy” on perfusion imaging without development of significant PH. We encourage the establishment of registries and collaboration within and between institution to help generate valuable and much-needed outcome data. CLINICAL IMPLICATIONS: PH is not uncommon in FM and can result from both arterial and venous involvement. A multidisciplinary and thoughtful approach is necessary in the management of these often complex patients with severe disease. DISCLOSURE: The following authors have nothing to disclose: Shireen Mirza, Tobias Peikert No Product/Research Disclosure Information

TCT-293 Is it possible to predict fractional flow reserve in side branch after main vessel stenting in coronary bifurcation lesions by means of intracoronary electrocardiogram? A proof of concept FFRvs.icECG

TCT-293 Is it possible to predict fractional flow reserve in side branch after main vessel stenting in coronary bifurcation lesions by means of intracoronary electrocardiogram? A proof of concept FFRvs.icECG

Impact of Stent Size Selection on Acute and Long-Term Outcomes After Drug-Eluting Stent Implantation in De Novo Coronary Lesions.

Although significant undersizing often results in incomplete stent apposition or underexpansion, the possible impact of oversized stent implantation on arterial wall injury has not been systematically investigated with drug-eluting stents. The aim of this study was to investigate the impact of stent oversizing on acute and long-term outcomes after drug-eluting stents implantation in de novo coronary lesions. Serial (baseline and 6-12 months) coronary angiography and intravascular ultrasound were performed in 2931 lesions treated with drug-eluting stents (355 sirolimus, 846 paclitaxel, 1387 zotarolimus, and 343 everolimus). The percentage of stent oversizing to angiographic reference vessel diameter (RVD) was calculated as (nominal stent diameter-RVD)/RVD×100 (%). Clinical outcomes, including target lesion revascularization and stent thrombosis, were followed for 1 year. Overall, smaller preintervention RVD was associated with higher percentage of stent oversizing (P<0.001). The significant oversizing group underwent less post-dilatation (P=0.002) but achieved greater stent expansion (P<0.001) and less incomplete stent apposition (P<0.001) without increase of edge dissection after procedure. When stratified by vessel size and stent oversizing, progressive decreases of restenosis (P=0.002) and target lesion revascularization rates (P=0.007) were found in favor of larger vessel size and oversized stents. Stent thrombosis was observed the most in small RVD with low percentage of stent oversizing group among the subgroups (P=0.040). The positive impact of stent oversizing was documented on procedural and clinical outcomes. In particular, small vessels treated with smaller stents were associated with greater adverse events, suggesting that aggressive selection of larger stents, with appropriate attention to edge effects, may optimize long-term outcomes, even in drug-eluting stents implantation.

Mechanical properties of hierarchical anti-tetrachiral metastructures

Chiral structures consisting of circular ring nodes and tangentially connected ligaments are engineered systems that exhibit excellent flexibility, vibration attenuation, impact resistance performance, etc. In this paper, we proposed an innovative hierarchical anti-tetrachiral structures based on the auxetic deformation behaviors of anti-tetrachiral unit cell at different structural hierarchical levels. The in-plane mechanical properties of hierarchical anti-tetrachiral metastructures are deduced from strain energy analysis, experimental and finite element analysis (FEA) comparisons are employed for verification. The in-plane mechanical properties of hierarchical anti-tetrachiral metastructures can be remarkably enhanced and manipulated through combining the auxetic deformation behaviors of chiral structures and the mechanical benefits of structural hierarchy, and its tunable mechanical properties can be designed within very large range of modulus and Poisson’s ratio value. Finally, an innovative hierarchical anti-tetrachiral stent is proposed, and the interaction between stent and artery vessel are studied, demonstrating the promising industrial application potential of hierarchical chiral metastructures. The proposed chiral geometry represents a new family of chiral hierarchical structures, and the extent of auxeticity and its in-plane mechanical properties can be tuned through manipulating node ring size and shape, length and thickness, and the hierarchy level, thus achieving desired extreme mechanical properties. It is believed that this work can greatly expand the potential applications of chiral metamaterials in conformable and stretchable electronics, biomedical devices, electronic skin, stents, and reconfigurable soft robotics, etc.

Safety of carotid artery stent in repetitive transcranial magnetic stimulation-The histopathological proof from swine carotid artery.

Repetitive transcranial magnetic stimulation (rTMS), including theta burst stimulation (TBS), is considered helpful for functional recovery in post-stroke patients. However, the safety is a common concern forusingr TMS for neuro-rehabilitation and research in patients with stents. Prolonged continuous theta burst stimulation (cTBS) with 1200 pulses at 50% of maximum output of Magstim Super Rapid2 was delivered in three different angles to a carotid stent placed in an isolated fresh swine carotid artery or on a table at a distance of 5cm. The possible migration and temperature change of the stent caused by cTBS was monitored by video recording and a digital thermometer, respectively. Histopathological study with hematoxylin and eosin stain were done on the vessel wall to identify possible micro thermal injury. Stents in vessels did not cause any significant morphology change, such as thermal damage, after cTBS was given at three different angles. Neither visible migration nor significant temperature elevation was induced by cTBS. There was no temperature change, thermal injury or migration after prolonged TBS at a high intensity, suggesting TBS is safe for clinical neuro-rehabilitation and physiological assessments in stroke patients with vascular stents.

P1741Is it possible to predict fractional flow reserve in side branch after main vessel stenting in coronary bifurcation lesions by means of intracoronary electrocardiogram? A proof of concept FFR vs. icECG

P1741Is it possible to predict fractional flow reserve in side branch after main vessel stenting in coronary bifurcation lesions by means of intracoronary electrocardiogram? A proof of concept FFR vs. icECG

Effect of different expansion strategies on coronary stent deployment in a tapered artery.

Vascular stenting has been widely used to treat vessel stenosis. However, long-term successes of the procedure are often compromised by late stent thrombosis (ST) and in-stent restenosis (ISR), especially in tapered arteries. The aim of this study was to choose a reasonable expansion strategy for tapered arteries. A balloon-expandable coronary stent deployment in a tapered vessel was numerically studied fol-lowing three strategies: (i) selecting the proximal diameter of the tapered vessel as the reference diameter to expand the stent, (ii) selecting the middle diameter of the tapered vessel as the reference diameter to expand the stent, and (iii) selecting the distal diameter of the tapered vessel as the reference diameter to expand the stent. Computational results showed that the first expansion strategy resulted in the maximum vessel stress and the best stent apposition, while the third strategy resulted in the minimal vessel stress and the worst stent appo-sition. Meanwhile, the second expansion strategy achieved a trade-off between the first and third strategies, leading to acceptable vessel stress and stent apposition. The second expansion strategy is the most reasonable choice for tapered vessels, and it should be considered when implanting a stent.

Reconstruction of stented coronary arteries from optical coherence tomography images: Feasibility, validation, and repeatability of a segmentation method.

Optical coherence tomography (OCT) is an established catheter-based imaging modality for the assessment of coronary artery disease and the guidance of stent placement during percutaneous coronary intervention. Manual analysis of large OCT datasets for vessel contours or stent struts detection is time-consuming and unsuitable for real-time applications. In this study, a fully automatic method was developed for detection of both vessel contours and stent struts. The method was applied to in vitro OCT scans of eight stented silicone bifurcation phantoms for validation purposes. The proposed algorithm comprised four main steps, namely pre-processing, lumen border detection, stent strut detection, and three-dimensional point cloud creation. The algorithm was validated against manual segmentation performed by two independent image readers. Linear regression showed good agreement between automatic and manual segmentations in terms of lumen area (r>0.99). No statistically significant differences in the number of detected struts were found between the segmentations. Mean values of similarity indexes were >95% and >85% for the lumen and stent detection, respectively. Stent point clouds of two selected cases, obtained after OCT image processing, were compared to the centerline points of the corresponding stent reconstructions from micro computed tomography, used as ground-truth. Quantitative comparison between the corresponding stent points resulted in median values of ~150 μm and ~40 μm for the total and radial distances of both cases, respectively. The repeatability of the detection method was investigated by calculating the lumen volume and the mean number of detected struts per frame for seven repeated OCT scans of one selected case. Results showed low deviation of values from the median for both analyzed quantities. In conclusion, this study presents a robust automatic method for detection of lumen contours and stent struts from OCT as supported by focused validation against both manual segmentation and micro computed tomography and by good repeatability.

Wave reflection and transmission in multiply stented blood vessels.

Closed circulatory systems display an exquisite balance between vascular elasticity and viscous fluid effects, to induce pulse-smoothing and avoid resonance during the cardiac cycle. Stents in the arterial tree alter this balance through stiffening and because a periodic structure is introduced, capable of interacting with the fluid in a complex way. While the former feature has been investigated, the latter received no attention so far. But periodic structures are the building blocks of metamaterials, known for their ‘non-natural’ behaviour. Thus, the investigation of a stent's periodic microstructure dynamical interactions is crucial to assess possible pathological responses. A one-dimensional fluid–structure interaction model, simple enough to allow an analytical solution for situations of interest involving one or two interacting stents, is introduced. It is determined: (i) whether or not frequency bands exist in which reflected blood pulses are highly increased and (ii) if these bands are close to the characteristic frequencies of arteries and finally, (iii) if the internal structure of the stent can sensibly affect arterial blood dynamics. It is shown that, while the periodic structure of an isolated stent can induce anomalous reflection only in pathological conditions, the presence of two interacting stents is more critical, and high reflection can occur at frequencies not far from the physiological values.

A randomised comparison of Conventional versus Intentional straTegy in patients with high Risk prEdiction of Side branch OccLusion in coronary bifurcation interVEntion: rationale and design of the CIT-RESOLVE trial

IntroductionThe intentional strategy (aggressive side branch (SB) protection strategy: elective two-stent strategy or jailed balloon technique) is thought to be associated with lower SB occlusion rate than conventional strategy (provisional...

Enhanced biocompatibility and long-term durability in vivo of Mg-Nd-Zn-Zr alloy for vascular stent application

Biodegradable magnesium (Mg) alloy emerges as revolutionary biomaterial by meeting both engineering and medical requirements for implants. In this study, we report a Mg alloy Mg-2.5Nd-0.21Zn-0.44Zr (wt. %, denoted as JDBM) potential for vascular stent application due to its outstanding performance in corrosion behaviors and biocompatibility. The investigation of corrosion properties evaluated by immersion test and electrochemical measurement shows less susceptibility to pitting corrosion and lower corrosion rate of JDBM as compared with AZ31 alloy. The corrosion products of JDBM do not cause significant adverse effect on the cell viability and growth during in vitro cytotoxicity test of the Mg extract via human vascular endothelial cells (HUVECs). We also investigated macrophage response to the Mg extract and observed compromised foreign body reaction (FBR) determined by human peripheral blood derived macrophage fusion and inflammatory cytokine and chemokine secretion. At last, we performed in vivo degradation assessment via implantation of JDBM stent in an animal model, and confirmed long-term stability and structural integrity of the stent in blood vessel. Thus, the JDBM alloy with excellent biocompatibility and long-term stability and durability in vivo, represents a significant advance in the development of biodegradable implants.

“Snare-Ride”: A Bailout Technique to Catheterize Target Vessels With Unfriendly Anatomy in Branched Endovascular Aortic Repair

Purpose: To describe a novel endovascular bailout technique for successful completion of target vessel stenting during branched stent-graft repair of thoracoabdominal aortic aneurysms (TAAA) after encountering difficulties with standard catheterization techniques. Technique: Technical difficulties when using fenestrated and branched grafts should be expected, especially in difficult anatomy or when an off-the-shelf device (eg, standard 4-branch device) is used that does not perfectly “match” the anatomy. The “snare-ride technique” facilitates antegrade transaxillary side branch catheterization and stent placement during TAAA branched grafting using a snare via a transfemoral approach. The branch of the graft is catheterized from an axillary access. The respective target vessel is then catheterized via a femoral access. An Indy snare is advanced over the transfemoral wire and positioned near the entrance of the target vessel. The transaxillary wire inside the branch of the graft is then advanced, snared, and pushed inside the target vessel with the snare. The procedure is thereafter continued with antegrade bridging of the target vessel in routine fashion. Conclusion: The snare-ride technique can be a useful maneuver to catheterize target vessels with difficult anatomy in TAAA branched stent-graft repair. Early experience shows safety and feasibility.

FT05. Risk Factors for Early and Late Mortality Following Complex Aneurysm Repair With F-BEVAR

This study was conducted to evaluate outcomes of fenestrated-branched endovascular aneurysm repair (F-BEVAR) to treat pararenal (PR) and thoracoabdominal (TAAA) aneurysms performed in high-risk patients and to identify those patients likely to benefit from this treatment. We performed a prospective single-center study of patients treated electively for PR and TAAA repair using F-BEVAR between 2005 and 2016. Survival was estimated with the Kaplan-Meier method. The risk factors associated with 30-day mortality and mortality during follow-up were determined using multivariate statistical techniques with a Cox regression model including all variables that were significant on univariate analysis (P < .05). We analyzed the data from 468 patients (median age, 71.6 years) with American Society for Anesthesiology score of III or IV. There were 221 (47.2%) type 1 to 3 TAAAs and 247 (52.8%) type 4 and PR aneurysms, with a median diameter of 60 mm. Technical success of target vessel stenting was 98.7 % (1497 of 1516). The 30-day mortality rate was 4.9% (23 patients). The spinal cord ischaemia rate was 3.8% (18 patients). Twenty patients (4.3%) required postoperative dialysis, and four (0.8%) required long-term dialysis after discharge. Median follow-up was 29 months. Survival at 1, 3, and 5 years was 86.7% (95% confidence interval [CI], 83.7-89.7), 73.4% (95% CI, 68.4-78.4), and 59.6% (95% CI, 53.6-65.6), respectively. Freedom from target vessel occlusion and from secondary procedures was 94.3% (95% CI, 92.3-96.3) and 88.2% (95% CI, 85.2-91.2) at 1 year, and 88.9% (95% CI, 84.9-92.4) and 70.2% (95% CI, 64.2-76.2) at 5 years, respectively. In multivariate analysis, early mortality was associated with procedure time (hazard ratio [HR], 1.007 per minute; 95% CI, 1.003-1.010; P < .001), TAAA preoperative diameter (HR, 1.053 per mm; 95% CI, 1.020-1.087; P = .001), and chronic kidney disease (HR, 3.139; 95% CI, 1.369-7.196; P = .007). Mortality during follow-up was associated with Crawford type I to III (HR, 1.683; 95% CI, 1.157-2.447; P = .006) as compared with infra diaphragmatic repairs, chronic kidney disease (HR, 1.654; 95% CI, 1.130-2.442, P = .010), TAAA preoperative diameter (HR, 1.025 per mm; 95% CI, 1.008-1.042; P = .004), and age at repair (HR = 1.030 per year; 95% CI, 1.006-1.056; P = .016). F-BEVAR performed in high risk patients is associated with favorable outcomes. Patient selection should take into account the reported risk factors associated with mortality.

Temporary Stent-Assisted Coil Embolization as a Treatment Option for Wide-Neck Aneurysms.

Simple coil embolization is often not a feasible treatment option in wide-neck aneurysms. Stent-assisted coil embolization helps stabilize the coils within the aneurysm. Permanent placement of a stent in an intracranial vessel, however, requires long-term platelet inhibition. Temporary stent-assisted coiling is an alternative technique for the treatment of wide-neck aneurysms. To date, only case reports and small case series have been published. Our purpose was to retrospectively analyze the effectiveness and safety of temporary stent-assisted coiling in a larger cohort. Research was performed for all patients who had undergone endovascular aneurysm treatment in our institution (University Hospital Aachen) between January 2010 and December 2015. During this period, 355 consecutive patients had undergone endovascular aneurysm treatment. We intended to treat 33 (9.2%) of them with temporary stent-assisted coiling, and they were included in this study. Incidental and acutely ruptured aneurysms were included. Sufficient occlusion was achieved in 97.1% of the cases. In 94%, the stent could be fully recovered. Complications occurred in 5 patients (14.7%), whereas in only 1 case was the complication seen as specific to stent-assisted coiling. Temporary stent-assisted coiling is an effective technique for the treatment of wide-neck aneurysms. Safety is comparable with that of stent-assisted coiling and coiling with balloon remodeling.