End-to-end simulations for COLIBRI, ground follow-up telescope for the SVOM mission.

2018 ◽  
Author(s):  
David Corre ◽  
Stéphane Basa ◽  
Alain Klotz ◽  
Alan Morgan Watson ◽  
Michel Ageron ◽  
...  
Keyword(s):  
End To End

scholarly journals Reconstruction of the Aortic Arch in Newborns and Infants Using an Extended End-to-End Anastomosis

2021 ◽  
pp. 63-68
Author(s):  
Iaroslav P. Truba ◽  
Ivan V. Dziuryi ◽  
Roman I. Sekelyk ◽  
Oleksandr S. Golovenko
Keyword(s):  
Hospital Mortality ◽  
Aortic Arch ◽  
Median Sternotomy ◽  
Term Survival ◽  
Long Term Survival ◽  
The Mean ◽  
End To End ◽  
Aortic Arch Hypoplasia

The problem of the effectiveness of obstruction at the level of the aortic arch is still a matter of discus-sion in the modern literature. Traditionally, by excision of the coarctation part, in the presence of hypoplasia, the incision is extended to a narrowed area and a modification of the classical end-to-end anastomosis is applied in the form of an elongated or expanded variant. Recently, when proximal part is involved in the pathological process, cardiac surgeons have been more likely to use median sternotomy using other types of plastic surgery, including dilation of the narrowed area with a pericardial patch, or pulmonary artery tissue. Accordingly, the analysis of the results of the use of end-to-end anastomosis in young children with aortic arch hypoplasia, especially in view of long-term survival and the level of reoperation, is an important issue of neonatal cardiac surgery. The aim. To evaluate the effectiveness of the use of an extended end-to-end anastomosis after reconstruction of the aortic arch in children under 1 year of age. Materials and methods. The study material included 348 infants who underwent surgical correction of aortic arch hypoplasia through the method of extended end-to-end anastomosis from 2010 to 2020. The operations were performed at the National Amosov Institute of Cardiovascular Surgery of the NAMS of Ukraine and the Ukrainian Children’s Cardiac Center. The study group included only patients with two-ventricular physiology. There were 233 male patients (67%) and 115 female patients (33%). The mean age was 1.07 (0.20; 2.30) months, the mean weight was 3.89 (3.30; 4.90) kg, the mean body surface area was 0.23 (0.20; 0.28) m2. Diagnosis of aortic arch hypoplasia was based on two-dimensional echocardiography. Results. According to echocardiography, after surgery there was a significant decrease in the pressure gradient in the aortic arch from 48.3 ± 20.3 to 16 ± 6.9 (p<0.05), left ventricular PV increased significantly from 61.6 ± 12% to 66.3 ± 6.4% (p> 0.05). The hospital mortality was 1.7% (n = 6). The causes of mortality were not related to the end-to-end aortic arch technique. The duration of follow-up period ranged from 1 month to 9.3 years. Two deaths occurred in the follow-up period. Thirty-two (9.1%) patients developed aortic arch restenosis in the postoperative period. Balloon dilatation of restenosis was performed in 21 patients. Eleven patients underwent repeated aortic arch repair surgery through the median sternotomy. There were no central nervous system complications in the follow-up period. Conclusions. The use of an extended end-to-end anastomosis in the surgical treatment of aortic arch hypoplasia demon strates low hospital mortality and high long-term survival. Indications for the effective use of this type of reconstruction are hypoplasia of the isthmus and distal aortic arch.

scholarly journals Long-term follow-up comparing subclavian flap angioplasty to resection with modified oblique end-to-end anastomosis

1991 ◽  
Vol 101 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Charles Sciolaro ◽  
Jack Copeland ◽  
Randy Cork ◽  
Mark Barkenbush ◽  
Richard Donnerstein ◽  
...  
Keyword(s):  
Long Term Follow Up ◽  
End To End

Use of human fibrinogen and human thrombin for urethral reconstructive surgery

2008 ◽  
Vol 75 (1) ◽  
pp. 49-53
Author(s):  
G. Romano ◽  
M. De Angelis ◽  
G. Barbagli
Keyword(s):  
Reconstructive Surgery ◽  
Saline Solution ◽  
Selection Criterion ◽  
Massive Bleeding ◽  
Bleeding Events ◽  
Human Fibrinogen ◽  
Human Thrombin ◽  
End To End ◽  
Urethral Reconstructive Surgery

The objective of the present study is to test the use of a haemostatic sponge for urethral reconstructive surgery and to assess the relevant benefits. Methods. The haemostatic sponge is made up of collagen with human fibrinogen and human thrombin. When the sponge gets in contact with fluids, such as blood, lymph or saline solution, the fibrinogen and thrombin are activated and form a fibrin net able to achieve local haemostasis and tissue regeneration. This kind of product was used in 30 selected patients (pts.), aged 19 - 70 (mean age: 35), who underwent single-stage anastomotic urethroplasty from January 2006 to March 2007: 22 bulbar end-to-end anastomoses and 8 bulbo-prostatic anastomoses. All operations were performed due to post-traumatic stricture of bulbar and posterior urethra. The main selection criterion for the use of the haemostatic sponge has always been the tendency to and/or the presence of bleeding in the different surgical stages. The sponge imbibed in saline solution and suitably modeled for all specific requirements was differently placed: sleeve-shaped in the case of bulbar anastomoses (16 pts.); as a “patch” in the centre of spongioplasty in bulbo-prostatic anastomoses (8 pts.), and within the widening incisions of the urethral roof performed between the two cavernous bodies at level of the intercrural septum (5 pts.). In 1 case (obese patient) a single sponge was placed after the deep perineal reconstruction on the bulbo-cavernous muscle-subcutaneous layers because of massive bleeding. Results. In all cases a perfect control of haemostasis could be achieved, with immediate end of bleeding in the points where the haemostatic sponges were used. The dressings performed on day 3 upon removal of the compressive scrotum-perineal bandages did not show any late post-operative bleeding. The follow-up visits at month 1 and 3 yielded positive outcomes for all 30 patients, who achieved complete wound healing by first intention, and a perfect anastomosis especially in the bulbar end-to-end urethroplasty, confirmed by urethrografy at one month. Conclusions. The association of human fibrinogen and human thrombin in haemostatic sponges represents a manageable, useful product, apparently sure, not negatively interfering in repairing and regenerating tissue processes, and allowing a simple and direct control of important bleeding events occurring during urethral reconstructive surgery as well as other operations. It is therefore advisable to more widely use the product after a suitable follow-up period.

scholarly journals Invited letter concerning: Long-term follow-up comparing subclavian flap angioplasty to resection with modified oblique end-to-end anastomosis

1991 ◽  
Vol 101 (2) ◽  
pp. 366-367 ◽  
Author(s):  
Jacques A. M. van Son ◽  
Wim N. J. C. van Asten ◽  
Henk J. J. van Lier ◽  
Otto Daniëls ◽  
Stefan H. Skotnicki ◽  
...  
Keyword(s):  
Long Term Follow Up ◽  
End To End

scholarly journals Coarctation repair through left thoracotomy in neonates and infants

2018 ◽  
Vol 22 (4) ◽  
pp. 12
Author(s):  
M. M. Belyaeva ◽  
V. N. Ilyin ◽  
O. Yu. Kornouhov ◽  
Yu. Yu. Kornouhov ◽  
O. I. Kalinina
Keyword(s):  
Aortic Arch ◽  
Conflict Of Interest ◽  
Septal Defect ◽  
Coarctation Repair ◽  
Long Term Follow Up ◽  
End To End ◽  
Neonates And Infants ◽  
Aortic Arch Hypoplasia

<p><strong>Aim.</strong> A growing interest in the use of sternotomy and perfusion for repair of aortic coarctation in neonates and infants has enabled us to retrospectively review our own experience in this practice. Our purpose was to determine the efficacy of coarctation repair with extended end-to-end anastomosis through left thoracotomy focusing on a re-intervention rate and dynamics of transverse aortic arch growth during long-term follow-up. <br /><strong>Methods.</strong> One hundred and twenty-four patients under 3 months old who underwent coarctation repair (between 2008 and 2016) were enrolled in this study. In 43 patients (35%), aorta coarctation was combined with ventricular septal defect, 49 patients (39.5%) had transversal aortic arch hypoplasia (Z-score less than –2). All operations were carried out by using extended “end-to-end” anastomosis technique via thoracotomy. In patients with concomitant ventricular septal defect, PA-banding was performed simultaneously. Overall follow-up was 3.6 (0.3–8.0) years. <br /><strong>Results.</strong> Early mortality was 1.6%. Late survival rate was 93.5%. Recurrent aortic arch obstruction was revealed in 10 (8%) patients, on the average, in 6.5 (3.5–15) months after coarctation repair. Management of re-stenosis with balloon aortoplasty was effective in all cases and had no complications. A statistically significant growth (p&lt;0.001) of the transverse aortic arch was observed in those patients who had hypoplasia of the arch before surgery. <br /><strong>Conclusion.</strong> Repair of coarctation of the aorta by resection and extended “end-to-end” anastomosis via thoracotomy without perfusion has low operative mortality, an excellent survival rate and a reduced rate of balloon re-intervention. Patients with baseline moderate transverse aortic arch hypoplasia demonstrate a growth of the aorta up to normal values in long-term follow-up. Endovascular balloon dilatation of aortic re-coarctation zone during long-term follow-up is an effective and safe procedure. <br />Received 20 June 2018. Revised 5 September 2018. Accepted 12 September 2018.<br /><strong>Funding:</strong> The study did not have sponsorship.<br /><strong>Conflict of interest:</strong> Authors declare no conflict of interest.<br /><strong>Author contributions</strong><br />Conception and study design: V.N. Ilyin<br />Data collection and analysis: M.M. Belyaeva, O.Yu. Kornoukhov, Yu.Yu. Kornoukhov, O.I. Kalinina<br />Drafting the article: M.M. Belyaeva <br />Critical revision of the article: V.N. Ilyin, O.Yu. Kornoukhov<br />Final approval of the version to be published: M.M. Belyaeva, V.N. Ilyin, O.Yu. Kornoukhov, Yu.Yu. Kornoukhov, O.I. Kalinina</p>

scholarly journals Arteriovenous Malformation Model in Swine: A Natural History Study

2000 ◽  
Vol 6 (4) ◽  
pp. 311-316 ◽  
Author(s):  
J. Klisch ◽  
L. Yin ◽  
F. Requejo ◽  
M. Schumacher
Keyword(s):  
Carotid Artery ◽  
Natural History ◽  
Arteriovenous Malformation ◽  
External Carotid Artery ◽  
External Jugular Vein ◽  
External Carotid ◽  
Long Term Follow Up ◽  
End To End

The well-known porcine arteriovenous malformation (AVM) model introduced by Massoud et al has been widely used as an acute-phase model. However, there are no data available on the patency rate in long-term follow-up. Therefore this study is dedicated to the natural history of porcine AVM model after creation. Three piglets (Yucatan micropigs, aged 12 to 14 months) were used in this study. The model was created by microsurgical anastomosis in an end-to-end fashion between the common carotid artery (CCA) and external jugular vein (EJV) on the left side, and by direct ligation of the left external carotid artery (ECA). Angiography was performed before and immediately after model creation, as well as at 44, 103, 188 and 245 days in all animals. A successful high-flow brain AVM model was established in all animals. The fistula created by end-to-end anastomosis remained intact and thus the successful AVM model maintained in all models over a follow-up period as long as more than eight months. The AVM-model in swine could be used as a chronic model to test the neurointerventional techniques of AVM treatment. We re-created the well known AVM-model by a terminal anastomosis between CCA and EJV and we hypothesize that the good long-term patency of the model is related to the type of anastomosis performed between CCA and EJV.

Facial reanimation with end-to-end hypoglossofacial anastomosis: 20 years’ experience

2009 ◽  
Vol 124 (1) ◽  
pp. 23-25 ◽  
Author(s):  
T Catli ◽  
Y A Bayazit ◽  
O Gokdogan ◽  
N Goksu
Keyword(s):  
Facial Nerve ◽  
Acoustic Neuroma ◽  
Cranial Nerves ◽  
Significant Difference ◽  
Facial Reanimation ◽  
Short And Long Term ◽  
End To End ◽  
Facial Function

AbstractObjective:This study aimed to evaluate retrospectively the results of experience with end-to-end anastomosis of cranial nerves VII and XII, performed due to transection of the facial nerve during acoustic neuroma removal.Methods:We assessed the facial reanimation results of 33 patients whose facial nerves had been transected during acoustic neuroma excision via a retrosigmoid approach, between 1985 and 2006, and who underwent end-to-end hypoglossofacial anastomosis. We compared the facial nerve functions of patients receiving short term (two to three years) and long term (more than three years) follow up, and we assessed any complications of the anastomosis.Results:A House–Brackmann grade III facial function was achieved in 46.2 and 86.4 per cent of the patients in the short and long term, respectively. House–Brackmann grade IV facial function was achieved in 53.8 and 13.6 per cent of the patients in the short and long term, respectively. There was a statistically significant difference between the facial recovery results, comparing the short and long term follow-up periods (p = 0.03). Disarticulation was the most common complication, seen in 19 (57.6 per cent) patients; numbness of the tongue was the next commonest (10 (30.3 per cent) patients). None of the patients developed dysphagia.Conclusion:Despite such morbidities as disarticulation and tongue numbness, end-to-end hypoglossofacial anastomosis is still an effective procedure for the surgical rehabilitation of static and dynamic facial nerve functions. Significant improvement in facial nerve function can occur more than three years post-operatively.

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