scholarly journals Association between aortic arch angulation and bird-beak configuration after thoracic aortic stent graft repair of type B aortic dissection

2020 ◽  
Vol 31 (5) ◽  
pp. 688-696
Author(s):  
Long Cao ◽  
Yangyang Ge ◽  
Yuan He ◽  
Xinhao Wang ◽  
Dan Rong ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Aortic Arch ◽  
Stent Graft ◽  
Multivariable Analysis ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Landing Zone ◽  
Maximal Diameter ◽  
Significant Difference ◽  
Bird Beak

Abstract OBJECTIVES The goal of this study was to investigate factors favouring the bird-beak configuration after thoracic endovascular aortic repair (TEVAR) for type B aortic dissection. METHODS We retrospectively analysed 76 patients with type B aortic dissection who underwent landing zone 1 and 2 TEVAR from December 2015 to January 2018. Preoperative aortic arch geometry (aortic arch length, maximal diameter and angulation), stent graft details and operative details were evaluated. A bird-beak configuration was defined as a ≥5-mm gap between the proximal end of the stent and the aortic wall of the lesser curvature. RESULTS Patients were stratified into those with (n = 46) and without (n = 30) a bird-beak configuration. The baseline demographics, dissection chronicity, clinical features and implanted devices were largely similar between the 2 groups. No significant difference was observed in the arch length or maximal arch diameter. However, the mean aortic arch angulation was greater in patients with than without a bird-beak configuration (61.4° vs 51.3°; P < 0.001). No influence of either the stent graft brand or the proximal stent graft type was observed. The multivariable analysis showed that the aortic arch angulation was an independent risk factor for a bird-beak configuration (odds ratio 1.15, 95% confidence interval 1.07–1.24; P < 0.001). A cut-off angle of 59.15° was predictive of a bird-beak configuration (sensitivity 59%; specificity 77%). CONCLUSIONS The preoperative aortic arch angulation was an independent predictor of a postoperative bird-beak configuration in patients with type B aortic dissection who underwent TEVAR that involved the aortic arch. An angle of >59.15° may imply a relatively hostile anatomy with a higher risk of a bird-beak configuration.

scholarly journals Stent-Graft Treatment of Type B Aortic Dissection Involving the Right Aortic Arch

2000 ◽  
Vol 64 (9) ◽  
pp. 727-728 ◽  
Author(s):  
Ichiya Yamazaki ◽  
Kiyotaka Imoto ◽  
Yukio Ichikawa ◽  
Jiro Kondo ◽  
Yoshinori Takanashi
Keyword(s):  
Aortic Dissection ◽  
Aortic Arch ◽  
Stent Graft ◽  
Right Aortic Arch ◽  
Type B ◽  
Type B Aortic Dissection ◽  
The Right

scholarly journals Surgeon-modified fenestrated stent graft deployment in type B aortic dissection

2021 ◽  
Vol 29 (2) ◽  
pp. 285-289
Author(s):  
Hakkı Zafer İşcan ◽  
Ertekin Utku Ünal
Keyword(s):  
Aortic Dissection ◽  
Stent Graft ◽  
Subclavian Artery ◽  
Left Subclavian Artery ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Landing Zone ◽  
Ischemic Complications ◽  
Fenestrated Stent Graft ◽  
Aortic Dissections

The treatment of aortic dissections and aneurysms may be challenging for vascular surgeons. Currently, thoracic endovascular aortic repair is usually the first treatment option for descending aortic pathologies. Left subclavian artery coverage during this procedure is often required to achieve a sufficient proximal landing zone. Most surgeons agree that the left subclavian artery can be selectively covered, but revascularization is preferred to reduce the risk of neurological or ischemic complications. The chimney method, hybrid operations with extra-anatomic bypass, back table or in situ fenestrations are assistive techniques in this procedure. Herein, we present a surgeon-modified fenestrated stent graft for a type B aortic dissection patient.

scholarly journals Patient-Specific Virtual Stent-Graft Deployment for Type B Aortic Dissection: A Pilot Study of the Impact of Stent-Graft Length

2021 ◽  
Vol 12 ◽  
Author(s):  
Xiaoxin Kan ◽  
Tao Ma ◽  
Zhihui Dong ◽  
Xiao Yun Xu
Keyword(s):  
Pilot Study ◽  
Aortic Dissection ◽  
Stent Graft ◽  
Von Mises Stress ◽  
Patient Specific ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Landing Zone ◽  
Von Mises ◽  
The Impact

Thoracic endovascular aortic repair (TEVAR) has been accepted as a standard treatment option for complicated type B aortic dissection. Distal stent-graft-induced new entry (SINE) is recognised as one of the main post-TEVAR complications, which can lead to fatal prognosis. Previous retrospective cohort studies suggested that short stent-graft (SG) length (<165 mm) might correlate with increased risk of distal SINE. However, the influence of SG length on changes in local biomechanical conditions before and after TEVAR is unknown. In this paper, we aim to address this issue using a virtual SG deployment simulation model developed for application in type B aortic dissection. Our model incorporates detailed SG design and hyperelastic behaviour of the aortic wall. By making use of patient-specific geometry reconstructed from pre-TEVAR computed tomography angiography (CTA) scan, our model can predict post-TEVAR SG configuration and wall stress. Virtual SG deployment simulations were performed on a patient who underwent TEVAR with a short SG (158 mm in length), mimicking the actual clinical procedure. Further simulations were carried out on the same patient geometry but with different SG lengths (183 mm and 208 mm) in order to evaluate the effect of SG length on changes in local stress in the treated aorta. Comparisons of simulation results for different SG lengths showed the location of maximum stress varied with the SG length. With the short SG (deployed in the patient), the maximum von Mises stress of 238.9 kPa was found on the intimal flap at the distal landing zone where SINE was identified at 3-month follow-up. Increasing the SG length caused the maximum von Mises stress to move away from the distal landing zone where stress values were reduced by approximately 17% with the medium-length SG and by 60% with the long SG. This pilot study demonstrates the potential of using the virtual SG deployment model as a pre-surgical planning tool to help select the most appropriate SG length for individual patients.

Type B aortic dissection treated with a branched aortic arch stent graft and the STABILISE technique

2021 ◽  
Author(s):  
Pierre-Antoine Barral ◽  
Alexis Jacquier ◽  
Virgile Omnes ◽  
Philippe Piquet ◽  
Marine Gaudry
Keyword(s):  
Aortic Dissection ◽  
Aortic Arch ◽  
Stent Graft ◽  
Type B ◽  
Type B Aortic Dissection

Influence of Sex on Outcomes After Thoracic Endovascular Repair for Type B Aortic Dissection

Angiology ◽  
2021 ◽  
pp. 000331972098795
Author(s):  
Songyuan Luo ◽  
Yi Zhu ◽  
Enmin Xie ◽  
Huanyu Ding ◽  
Fan Yang ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Clinical Outcomes ◽  
Cox Regression ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Landing Zone ◽  
End Point ◽  
Male Patients ◽  
Long Term Mortality

We aimed to investigate whether sex differences influence the clinical outcomes of patients who undergo thoracic endovascular aortic repair (TEVAR) for type B aortic dissection (TBAD). We retrospectively analyzed a prospectively maintained single-center cohort of patients with TBAD who underwent TEVAR between January 2010 and June 2017. We evaluated the in-hospital and long-term mortality and composite end point. Of the 913 patients, 793 (86.8%) were male and 120 (13.1%) were female. Compared to male patients, the female patients were older, more likely to have diabetes mellitus, but less likely to smoke or have hypertension. The proximal landing zone in 0 and 1 was higher in male patients ( P = .023), who were more likely to require an aortic arch bypass. Endoleak, delirium, and ICU stay after stent-graft implantation were also more frequent in men. Sex factor was not associated with in-hospital or long-term mortality or the composite end point in the multivariable regression analyses and Cox regression model. The mean estimated survival time was similar between males and females (2462.9 ± 141.2 vs 2804.1 ± 117.4 days, P = .167) in the propensity score–matched cohort. Despite distinct characteristics between sex, there was no sex-related difference in long-term clinical outcomes after TEVAR for TBAD.

Endovascular Therapy for Nonischemic vs Ischemic Complicated Acute Type B Aortic Dissection

2019 ◽  
Vol 27 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Ahmed Eleshra ◽  
Tilo Kölbel ◽  
Giuseppe Panuccio ◽  
Fiona Rohlffs ◽  
E. Sebastian Debus ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Uncontrolled Hypertension ◽  
Aortic Dilatation ◽  
Acute Type ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Ischemic Group ◽  
Atherosclerotic Stenosis ◽  
Significant Difference ◽  
Branch Vessel

Purpose: To report a single-center experience with thoracic endovascular aortic repair (TEVAR) for complicated acute type B aortic dissection (cATBAD) comparing patients with vs without end-organ ischemia. Materials and Methods: Between November 2010 and December 2017, 64 patients (mean age 64.8±12.5 years; 49 men) underwent TEVAR for cATBAD. Patients were grouped into 2 cohorts: nonischemic (39, 61%) patients with unrelenting pain, early progressive aortic dilatation, uncontrolled hypertension, or rupture, and ischemic (25, 39%) patients with visceral, renal, lower extremity, or spinal cord hypoperfusion. Results: Mean time from diagnosis to treatment was 7.5 days (range 1–32) in the nonischemic group vs 2.3 days (range 1–14) days in the ischemic group (p=0.007). Fourteen (56%) of 25 ischemic cATBAD patients had stents implanted in the renovascular branch vessels, while 4 (16%) patients had stents implanted in the iliac arteries. When branch vessel cannulation failed, fenestrations were made in the intimal flap to improve perfusion of the involved branch (n=5). In the nonischemic group, 3 arteries were stented owing to atherosclerotic stenosis. Technical success was achieved in 62 (97%) of 64 patients; despite stenting, 2 patients had low renal artery perfusion on final angiography. There were no statistically significant differences in early or late outcomes between the nonischemic vs ischemic cATBAD patients. Six (9%) patients died within 30 days: 2 (5%) in the nonischemic group vs 4 (16%) in the ischemic group. Major complications (1 stroke, 2 cases of paraplegia, 1 retrograde type A dissection, and 1 case of bowel ischemia) occurred only in the nonischemic group. The mean follow-up was 28 months. Late endoleaks were observed in 3 (8%) nonischemic patients and 1 (4%) ischemic patient. Reinterventions were required in 7 (18%) nonischemic patients and 4 (16%) ischemic patients. Conclusion: TEVAR is an effective and safe method of treating cATBAD. Early intervention in ischemic cATBAD may have played a significant role in the lack of significant difference between ischemic and nonischemic cATBAD outcomes. Direct visceral reperfusion through branch vessel stenting during TEVAR may be crucial in achieving good outcomes in ischemic cATBAD.

Complications after Endovascular Repair of Type B Aortic Dissection

2002 ◽  
Vol 9 (6) ◽  
pp. 822-828 ◽  
Author(s):  
Reinhard S. Pamler ◽  
Thomas Kotsis ◽  
Johannes Görich ◽  
Xaver Kapfer ◽  
Karl-Heinz Orend ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Stent Graft ◽  
Subclavian Artery ◽  
Left Subclavian Artery ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Stent Grafting ◽  
Stent Graft Implantation ◽  
Graft Implantation

Purpose: To outline the complications encountered after endoluminal treatment in patients with type B aortic dissection. Methods: Between 1999 and 2001, 14 patients (12 men; mean age 60.3 years, range 39–79) with isolated type B aortic dissection (13 chronic, 1 acute) underwent aortic stent-grafting. Three patients with chronic dissection presented an acute clinical picture and were managed emergently. The left subclavian artery was intentionally covered by the prosthesis in 9 patients. Follow-up studies were performed at 6-month intervals. Results: Stent-graft implantation was technically successful in all patients, but incomplete sealing (endoleak) of the entry site required additional proximal stent-graft implantation in 4. The left subclavian artery remained patent in 5 patients. Secondary conversion was required in 3 patients: 2 for acute type A dissection resulting from injury to the aortic arch by Talent endografts and a sustained hemorrhage (left hemothorax). In another patient, a secondary intramural hematoma subsided spontaneously. Anterior spinal artery syndrome in 1 patient persisted at 1 month. No bypass was necessary for the 9 patients with the covered left subclavian arteries. Mean follow-up was 14 months (range 1–23). Conclusions: Stent-grafting is feasible in patients with type B aortic dissection, although it is associated with a considerable rate of complications. Frank reporting of these sequelae for a variety of stent-grafts is of paramount importance to clarifying the limitations of the method.

scholarly journals Elevated preoperative neutrophil‐to‐lymphocyte ratio predicts early adverse outcomes in uncomplicated type B aortic dissection undergoing TEVAR

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hongqiao Zhu ◽  
Lei Zhang ◽  
Taiping Liang ◽  
Yiming Li ◽  
Jian Zhou ◽  
...  
Keyword(s):  
Adverse Events ◽  
Aortic Dissection ◽  
Multivariable Analysis ◽  
Adverse Outcomes ◽  
Neutrophil To Lymphocyte Ratio ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Independent Predictive Factor ◽  
Lymphocyte Ratio ◽  
Clinical Events

Abstract Background Thoracic aortic endovascular repair (TEVAR) of uncomplicated type B aortic dissection (uTBAD) has favorable long-term outcomes but higher early adverse events compared with the optimal medical treatment. Recently, clinical evidence concerning vascular surgery indicates that elevated preoperative systemic inflammatory response predicts adverse clinical events. The aim of our study was to evaluate the relationship between preoperative neutrophil-to-lymphocyte ratio (NLR) and early outcomes of uTBAD patients undergoing TEVAR. Results 216 patients diagnosed with uTBAD were included in this retrospective study between January 2015 and December 2018. The median (IQR) follow-up period was 21 (15–33) months. An early adverse event was defined as occurring within 2 years after the procedure. Median patient age was 60 (IQR, 48–68) years and 78.7 % were male. Early adverse events occurred in 24 patients (11.1 %). In the multivariable analysis, preoperative NLR (HR per SD, 1.98; 95 % CI, 1.14–3.44; P = 0.015) was associated with 2-year adverse events. Conclusions NLR is an independent predictive factor of early adverse events in uTBAD patients undergoing TEVAR.

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