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Dacron graft

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https://www.readbyqxmd.com/read/29761422/computational-pre-surgical-planning-of-arterial-patch-reconstruction-parametric-limits-and-in-vitro-validation
#1
S Samaneh Lashkarinia, Senol Piskin, Tijen A Bozkaya, Ece Salihoglu, Can Yerebakan, Kerem Pekkan
Surgical treatment of congenital heart disease (CHD) involves complex vascular reconstructions utilizing artificial and native surgical materials. A successful surgical reconstruction achieves an optimal hemodynamic profile through the graft in spite of the complex post-operative vessel growth pattern and the altered pressure loading. This paper proposes a new in silico patient-specific pre-surgical planning framework for patch reconstruction and investigates its computational feasibility. The proposed protocol is applied to the patch repair of main pulmonary artery (MPA) stenosis in the Tetralogy of Fallot CHD template...
May 14, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29755089/-surgical-repair-of-kommerell-s-diverticulum-with-right-sided-aortic-arch-report-of-a-case
#2
Hiromitsu Kawasaki, Yoshihiro Nakayama, Yuichi Koga, Baku Takahashi, Hisashi Sato
A 54-year-old woman was referred for assessment of dysphagia and extrinsic compression of the esophagus detected by upper gastrointestinal endoscopy. Computed tomography revealed the rightsided aortic arch with mirror image branching and Kommerell's diverticulum. To relieve the esophageal compression, surgical intervention was indicated. Descending aortic replacement with a Dacron graft was performed through right thoracotomy under partial cardiopulmonary bypass. The patient was discharged without any complication, and her dysphagia disappeared...
May 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29755087/-successful-echo-guided-deployment-of-stent-graft-for-intraoperative-retrograde-aortic-dissection-and-rupture-report-of-a-case
#3
Naoki Kanemitsu, Takehiko Matsuo, Hiroaki Osada, Kazuo Yamanaka, Junichi Tazaki
We report a case of chronic dissecting thoracoabdominal aneurysm with intraoperative retrograde aortic dissection and rupture at proximal descending aorta, which was successfully treated by echoguided stent-graft insertion. An 82-year old male underwent thoracoabdominal aortic replacement for dilatation of infra-diaphragmatic aorta. Under F-F bypass, his thoracoabdominal aorta was replaced by a Dacron graft with 4-branches. After he weaned from F-F bypass, we found massive bleeding from proximal descending aorta...
May 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29731397/long-term-clinical-and-radiographic-outcome-of-rotator-cuff-repair-with-a-synthetic-interposition-graft-a-consecutive-case-series-with-17-to-20-years-of-follow-up
#4
Mats C Ranebo, Hanna C Björnsson Hallgren, Rolf Norlin, Lars E Adolfsson
BACKGROUND: Treatment options for irreparable cuff tears include synthetic interposition grafts, but whether such grafts can maintain acceptable shoulder function and prevent cuff tear arthropathy in the long-term is unknown. METHOD: This was a retrospective case series of 13 consecutive patients treated with a synthetic interposition graft made of Dacron (DuPont, Wilmington, DE, USA). Patients were examined with bilateral ultrasonography, bilateral x-ray imaging, Constant-Murley score, and Western Ontario Rotator Cuff score...
May 3, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29731074/postoperative-doppler-ultrasonography-in-liver-transplantation
#5
Y K Chung, H J Choi, G H Na, Y K You, I Y Park
BACKGROUND: Doppler ultrasonography plays an important role in the postoperative management of liver transplantation. We present our initial experiences evaluating liver transplants with the use of postoperative Doppler sonography. METHODS: In our hospital, we performed 20 liver transplantations from July 2014 to October 2016. Among 20 patients, we performed 15 deceased-donor liver transplantations (DDLTs) and 5 living-donor liver transplantations (LDLTs). For deceased donors, inferior vena cava anastomoses were performed with the use of the piggyback technique, and for living donors, modified right grafts were used with middle hepatic vein reconstruction by Dacron graft...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29657948/early-results-of-the-petticoat-technique-for-the-management-of-acute-type-a-aortic-dissection
#6
Vamshi Krishna Kotha, Zlatko I Pozeg, Eric J Herget, Michael C Moon, Jehangir J Appoo
Conventional surgical techniques for acute Type A aortic dissection (ATAAD) generally fail to address residual dissection in the descending aorta. The persistence of a false lumen is associated with visceral malperfusion in the acute setting and adverse aortic remodeling in the chronic setting. Hybrid aortic arch repair techniques may improve perioperative and long-term mortality by expanding the true lumen and obliterating the false lumen. However, there is a limit to the extent of aortic coverage due to the concomitant risk of spinal cord ischemia...
August 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29644235/endograft-rescue-of-compromised-interposition-aortic-graft-in-an-adult-patient-with-congenital-heart-disease
#7
Jesse W Lee, Kanishka Ratnayaka, Howaida G El-Said, John W Moore
In a 19-year-old male with interrupted aortic arch and complex congenital heart disease, we report percutaneous repair of a compromised aortic conduit. The patient had aortic arch repair in childhood utilizing a 12 mm Hemashield Dacron conduit. CT angiography showed multiple segments of this conduit were dilated to 16 mm suggesting conduit degeneration and failure with pseudoaneurysm formation. We utilized a self-expanding aortic endograft supported by internal placement of bare metal stents to repair the conduit...
March 14, 2018: Global Cardiology Science & Practice
https://www.readbyqxmd.com/read/29627739/viscoelastic-characterization-of-woven-dacron-for-aortic-grafts-by-using-direction-dependent-quasi-linear-viscoelasticity
#8
Marco Amabili, Prabakaran Balasubramanian, Ivan Breslavsky, Giovanni Ferrari, Eleonora Tubaldi
In case of direction-dependent viscoelasticity, a simplified formulation of the three-dimensional quasi-linear viscoelasticity has been obtained manipulating the original Fung equation. The experimental characterization of the static hyperelastic behaviour, the relaxation, the dynamic modulus and the loss factor of woven Dacron from a commercial aortic prosthesis has been performed. An 11% difference of the reduced relaxation (after infinite time) between axial and circumferential directions has been observed for the woven Dacron...
March 30, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29588855/phage-treatment-of-an-aortic-graft-infected-with-pseudomonas-aeruginosa
#9
Benjamin K Chan, Paul E Turner, Samuel Kim, Hamid R Mojibian, John A Elefteriades, Deepak Narayan
Management of prosthetic vascular graft infections caused by Pseudomonas aeruginosa can be a significant challenge to clinicians. These infections often do not resolve with antibiotic therapy alone due to antibiotic resistance/tolerance by bacteria, poor ability of antibiotics to permeate/reduce biofilms and/or other factors. Bacteriophage OMKO1 binding to efflux pump proteins in P. aeruginosa was consistent with an evolutionary trade-off: wildtype bacteria were killed by phage whereas evolution of phage-resistance led to increased antibiotic sensitivity...
2018: Evolution, Medicine, and Public Health
https://www.readbyqxmd.com/read/29518512/septic-carotid-endarterectomy-patch-as-a-result-of-preoperative-tooth-extraction
#10
Kevin C Fok, Yiu Che Chan, Yuk Law, Stephen W Cheng
Infected carotid patches are rare. We present a gentleman who had an elective carotid endarterectomy with Dacron patch closure for symptomatic carotid stenosis under regional anesthesia, and he presented 1 month later with a discharging sinus at the lower aspect of the neck wound. Computed tomography scan showed a rim-enhancing collection next to the carotid bifurcation. He subsequently underwent patch excision and repair with autologous saphenous vein graft, with good recovery. Of significance was that he had a dental extraction for a loose tooth 1 day before the index operation as advised by the anesthetist...
March 5, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29515713/bilateral-external-iliac-artery-dissection-in-a-middle-aged-male-athlete
#11
Yasushi Yamanaka, Tetsuya Yoshida, Eiki Nagaoka
We present the case of a bilateral external iliac artery (EIA) dissection in a 44-year-old male athlete. The patient was referred to our department for right lower abdominal pain without claudication during single squatting. His athletic history included participation in approximately five athletic events per year. Contrast-enhanced computed tomography (CT) revealed bilateral EIA dissection and right renal infarction. Following medical treatment for his hypertension and considering his medical history, a bilateral EIA replacement with 8-mm Dacron straight grafts was performed on the 24th day after hospital admission...
December 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29512618/the-hemostatic-power-of-fat-an-effective-inexpensive-and-biocompatible-method-to-achieve-hemostasis-in-cardiac-surgery
#12
María Elena Arnáiz-García, Jose María González-Santos, Javier López-Rodríguez, Ana María Arnáiz-García, Javier Arnáiz
Postoperative bleeding with its important socioeconomic cost is associated with an increased morbidity and mortality. It causes hemodynamic instability, increases blood loss, and multiplies the number of transfusions required. Especially in vascular or aortic surgery, postoperative bleeding can become a life-threatening complication due to anticoagulant or antiaggregation preoperative status or postoperative coagulation dysfunction after a high level of heparinization. Presently described is the case of a patient who underwent an aortic valve and ascending aorta replacement...
March 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29503005/optimization-of-rifampin-coating-on-covered-dacron-endovascular-stent-grafts-for-infected-aortic-aneurysms
#13
Hooman Hennessey, Elna Luckham, Ahmed Kayssi, Mark David Wheatcroft, Elisa Greco, Mohammed Al-Omran, John Harlock, Mohammad Qadura
OBJECTIVE: In the treatment of an infected aorta, open repair and replacement with a rifampin-impregnated Dacron vascular graft decrease the risk of prosthetic graft infections, with several protocols available in the literature. We hypothesize that the same holds true for endovascular aneurysm repair, and after studying and optimizing rifampin solution concentration and incubation period to maximize the coating process of rifampin on Dacron endovascular stent grafts (ESGs), we propose a rapid real-time perioperative protocol...
March 1, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29466092/initial-inoculation-concentration-does-not-affect-final-bacterial-colonization-of-in-vitro-vascular-conduits
#14
Thomas A Heafner, Clayton Lewis, Graham Baluh, Michael Clemens, Brandon Propper, Zachary M Arthurs
BACKGROUND: Despite improved peri-operative care, prosthetic graft infections continue to cause substantial morbidity and mortality. Contemporary graft infection models have tested a conduit's infectability using varying concentrations without standardization. Using a static assay in vitro model, we sought to evaluate the impact of inoculation concentration on vascular conduit attachment. METHODS: The 2-hour and 24-hour attachment of Staphylococcus aureus TCH1516 and Pseudomonas aeruginosa PA01-UW were determined on polytetrafluoroethylene (PTFE), Dacron® , nitinol, cobalt chromium, and Viabahn® (W...
April 2018: Surgical Infections
https://www.readbyqxmd.com/read/29452629/continuous-betadine-bacitracin-irrigation-for-vascular-graft-infections-a-case-series
#15
David V Strider, Catherine R Ratliff, Kenneth J Cherry, Gilbert R Upchurch
The aim of the study was to conduct a retrospective chart review of patients who underwent betadine/bacitracin continuous irrigation (BBCI) for vascular graft infections (VGIs) to review its use as a treatment option. A retrospective chart review from 2013 to 2017 was conducted of patients with VGIs that were treated with BBCI postremoval of the infected graft. The BBCI is a continuous infusion of 0.25% betadine in normal saline at 0.3 mL/kg/h for 48 hours then followed by bacitracin infusion with a concentration of 50,000 units bacitracin/per liter normal saline at 0...
March 2018: Journal of Vascular Nursing: Official Publication of the Society for Peripheral Vascular Nursing
https://www.readbyqxmd.com/read/29429146/graft-type-for-femoro-popliteal-bypass-surgery
#16
REVIEW
Graeme K Ambler, Christopher P Twine
BACKGROUND: Femoro-popliteal bypass is implemented to save limbs that might otherwise require amputation, in patients with ischaemic rest pain or tissue loss; and to improve walking distance in patients with severe life-limiting claudication. Contemporary practice involves grafts using autologous vein, polytetrafluoroethylene (PTFE) or Dacron as a bypass conduit. This is the second update of a Cochrane review first published in 1999 and last updated in 2010. OBJECTIVES: To assess the effects of bypass graft type in the treatment of stenosis or occlusion of the femoro-popliteal arterial segment, for above- and below-knee femoro-popliteal bypass grafts...
February 11, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29428837/ascending-aortic-stenting-for-acute-supra-aortic-stenosis-from-graft-collapse
#17
Joshua M Lader, Deane E Smith, Cezar Staniloae, Arzhang Fallahi, Sohah N Iqbal, Aubrey C Galloway, Mathew R Williams
A 78 year-old man with remote type-A dissection presented with acute-onset dyspnea. Twenty-two years prior, treatment for his aortic disease required replacement of ascending and arch aneurysms with a Dacron graft using graft inclusion technique. He presented currently in cardiogenic shock. Echocardiography demonstrated new severe hypokinesis of all apical segments. Left-heart catheterization revealed a 120mmHg intra-graft gradient. CT arteriography was unrevealing, but intra-aortic ultrasound demonstrated critical intra-graft stenosis...
February 8, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29423504/nonlinear-dynamics-of-dacron-aortic-prostheses-conveying-pulsatile-flow
#18
Eleonora Tubaldi, Michael P Païdoussis, Marco Amabili
This study addresses the dynamic response to pulsatile physiological blood flow and pressure of a woven Dacron graft currently used in thoracic aortic surgery. The model of the prosthesis assumes a cylindrical orthotropic shell described by means of nonlinear Novozhilov shell theory. The blood flow is modeled as Newtonian pulsatile flow, and unsteady viscous effects are included. Coupled fluid-structure Lagrange equations for open systems with wave propagation subject to pulsatile flow are applied. Physiological waveforms of blood pressure and velocity are approximated with the first eight harmonics of the corresponding Fourier series...
June 1, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29397965/short-term-outcomes-of-a-simple-and-effective-approach-to-aortic-root-and-arch-repair-in-acute-type-a-aortic-dissection
#19
Bo Yang, Aroosa Malik, Victoria Waidley, Kellianne C Kleeman, Xiaoting Wu, Elizabeth L Norton, David M Williams, Minhaj S Khaja, Whitney E Hornsby
OBJECTIVE: To evaluate short-term outcomes following direct aortic root and arch repair in patients with acute type A aortic dissection (ATAAD) without technical adjuncts. METHODS: Between 2012 and 2016, 94 consecutive patients with ATAAD underwent surgical repair, including aortic root repair (n = 45), root replacement (n = 39), or no root procedure (n = 10). Aortic root repair was achieved by running approximation of the dissected aortic wall circumferentially at the sinotubular junction and reinforcing the coronary ostia with 5-0 Prolene...
April 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29310555/mechanical-circulatory-support-for-the-failing-fontan-conversion-to-assisted-single-ventricle-circulation-preliminary-observations
#20
Syed M Peer, Kristopher B Deatrick, Thomas J Johnson, Jonathan W Haft, Francis D Pagani, Richard G Ohye, Edward L Bove, Alvaro Rojas-Peña, Ming-Sing Si
BACKGROUND: Mechanical circulatory support (MCS) of a failing Fontan circulation remains challenging. We hypothesized that MCS can be provided by converting the Fontan circulation into a mechanically assisted single ventricle parallel circulation (MASVC). METHODS: A porcine model of functionally univentricular circulation was created under cardiopulmonary bypass (CPB) by performing an atrial septectomy, tricuspid valvectomy, and interrupting antegrade pulmonary blood flow...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
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