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Vascular surgery

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https://www.readbyqxmd.com/read/28538802/the-effect-of-intradermal-administration-of-inactive-platelet-rich-plasma-on-flap-viability-in-rats
#1
Erkan Orhan, Ahmet Çağrı Uysal, Engin Başer, Dürdane Keskin, Çiğdem Demiroğlu-Yakut
Purpose: To evaluate the effect of inactive form of platelet rich plasma (PRP) on the flap viability. Methods: Thirty six rats were used. Rats were divided into six groups then 9x3 cm random pattern skin flaps were elevated from dorsum of all rats. For precluding vascularization from the base, a silicone layer was placed under the flap in groups 2(only flap+silicone), 4(saline+silicone) and 6(PRP+silicone). In groups 1(only flap), 2(only flap+silicone) nothing was done except flap surgery...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28538699/cholesterol-crystal-embolism-and-chronic-kidney-disease
#2
REVIEW
Xuezhu Li, George Bayliss, Shougang Zhuang
Renal disease caused by cholesterol crystal embolism (CCE) occurs when cholesterol crystals become lodged in small renal arteries after small pieces of atheromatous plaques break off from the aorta or renal arteries and shower the downstream vascular bed. CCE is a multisystemic disease but kidneys are particularly vulnerable to atheroembolic disease, which can cause an acute, subacute, or chronic decline in renal function. This life-threatening disease may be underdiagnosed and overlooked as a cause of chronic kidney disease (CKD) among patients with advanced atherosclerosis...
May 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28538668/biomechanical-modeling-of-pterygium-radiation-surgery-a-retrospective-case-study
#3
Bojan Pajic, Daniel M Aebersold, Andreas Eggspuehler, Frederik R Theler, Harald P Studer
Pterygium is a vascularized, invasive transformation on the anterior corneal surface that can be treated by Strontium-/Yttrium90 beta irradiation. Finite element modeling was used to analyze the biomechanical effects governing the treatment, and to help understand clinically observed changes in corneal astigmatism. Results suggested that irradiation-induced pulling forces on the anterior corneal surface can cause astigmatism, as well as central corneal flattening. Finite element modeling of corneal biomechanics closely predicted the postoperative corneal surface (astigmatism error -0...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28538613/acute-retinal-damage-after-using-a-toxic-perfluoro-octane-for-vitreo-retinal-surgery
#4
J Carlos Pastor, Rosa M Coco, Ivan Fernandez-Bueno, Maria L Alonso-Alonso, Jesús Medina, Aurelio Sanz-Arranz, Fernando Rull, Manuel J Gayoso, Antonio Dueñas, Maria T Garcia-Gutierrez, Lucia Gonzalez-Buendia, Santiago Delgado-Tirado, Emilio Abecia, Miguel Ruiz-Miguel, Miguel A Serrano, Jose M Ruiz-Moreno, Girish K Srivastava
PURPOSE: To describe a series of retinal acute toxicity cases with severe visual loss after intraocular use of a toxic perfluoro-octane (PFO). The clinical presentation is described, and the likely causes are analyzed. New biological methods for testing safety of intraocular medical devices are proposed. METHODS: Information regarding a series of eyes suffering acute severe events after intraocular use of a toxic PFO was analyzed. Four types of spectroscopy, nuclear magnetic resonance, and chromatography were used to identify the potential PFO contaminants...
June 2017: Retina
https://www.readbyqxmd.com/read/28538571/angiosome-based-allografts-vascularized-composite-allotransplantation-for-tailored-subunit-reconstruction-with-volkmann-ischemic-contracture-as-a-case-in-point
#5
G Ian Taylor, David S Sparks, Adam C Gascoigne, Russell J Corlett, Mark W Ashton
BACKGROUND: As we enter an age with new approaches to tissue reconstruction, the emphasis on the adage "like for like" has become even more relevant. This study illustrates the potential for several tailored vascularized composite allotransplantation reconstructive techniques and, in particular, for the management of Volkmann contracture. METHODS: Twenty fresh cadaver dissections and 30 archival lead oxide radiographic studies were examined to (1) identify potential upper limb vascularized composite allotransplantation donor sites (i...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538567/hyperspectral-imaging-provides-early-prediction-of-random-axial-flap-necrosis-in-a-preclinical-model
#6
Michael S Chin, Ava G Chappell, Giorgio Giatsidis, Dylan J Perry, Jorge Lujan-Hernandez, Anthony Haddad, Hajime Matsumine, Dennis P Orgill, Janice F Lalikos
BACKGROUND: Necrosis remains a significant complication in cutaneous flap procedures. Monitoring, and ideally prediction, of vascular compromise in the early postoperative period may allow surgeons to limit the impact of complications by prompt intervention. Hyperspectral imaging could be a reliable, effective, and noninvasive method for predicting flap survival postoperatively. In this preclinical study, the authors demonstrate that hyperspectral imaging is able to correlate early skin perfusion changes and ultimate flap survival in a preclinical model...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538566/predicting-thrombosis-formation-in-1-mm-diameter-arterial-anastomoses-with-transit-time-ultrasound-technology
#7
Gabrielle Shaughness, Collin Blackburn, Alberto Ballestín, Yelena Akelina, Jeffrey A Ascherman
BACKGROUND: Thrombosis is a common source of failure in anastomoses, flaps, and vascular grafts. Ensuring vessel patency is critical to the success of microvascular procedures. Any tool that can accurately predict the patency of an anastomosis intraoperatively would enable the surgeon to detect and correct flow restrictions while the patient is still in the operating room. METHODS: The authors used transit-time ultrasound technology in this pilot study to investigate whether a minimal cutoff value for quantitative postoperative blood flow (in milliliters per minute) could be established that would reliably predict sustained vessel patency at 24 hours postoperatively...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538071/bone-scrapers-versus-piezoelectric-surgery-in-the-lateral-antrostomy-for-sinus-floor-elevation
#8
Claudio Stacchi, Teresa Lombardi, Paolo Cusimano, Federico Berton, Floriana Lauritano, Gabriele Cervino, Roberto Di Lenarda, Marco Cicciù
The purpose of this investigation is to evaluate 2 different methods for reducing cortical wall thickness in sinus floor augmentation surgery. A manual bone scraper was compared in terms of efficacy, speed, and safety to an ultrasonic insert for osteoplasty, in a randomized controlled clinical trial with a split-mouth design. Twenty-five patients with severe posterior maxillary atrophy were treated with bilateral sinus floor elevation with lateral approach. Antrostomies were randomly performed by eroding the cortical wall with a manual bone scraper (test site) or with an ultrasonic insert (control site) until the membrane was visible under a thin layer of bone, before outlining the window with a piezoelectric device...
May 19, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28538044/mycobacterium-chimaera-infections-associated-with-heater-cooler-units-in-cardiac-surgery
#9
Peter W Schreiber, Hugo Sax
PURPOSE OF REVIEW: Mycobacterium chimaera infections following cardiac surgery have been reported from an increasing number of countries. These infections are characterized by a poor prognosis with a case fatality rate around 50% despite treatment. Since the first description in 2013, our understanding has grown steadily. Several outbreak investigations, case series, and experiments with heater-cooler units (HCUs) have been published. This review summarizes the current knowledge. RECENT FINDINGS: M...
May 19, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28535510/heat-shock-protein-a12b-protects-vascular-endothelial-cells-against-sepsis-induced-acute-lung-injury-in-mice
#10
Yi Chen, Lei Wang, Qiuxiang Kang, Xu Zhang, Guifang Yu, Xiaojian Wan, Jiafeng Wang, Keming Zhu
BACKGROUND: Pulmonary endothelial injury is a critical process in the pathogenesis of acute lung injury (ALI) during sepsis. Heat shock protein A12B (HSPA12B) is mainly expressed in endothelial cells and protects against several harmful factors. However, the effects of HSPA12B in sepsis-induced ALI and its potential mechanisms of action remain unclear. METHODS: For in vivo experiments, C57BL/6 mice were randomly divided into four groups (n=15): a sham operation group, a cecal ligation and puncture (CLP) group, a HSPA12B siRNA-CLP group and a negative control (NC) siRNA-CLP group...
May 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28535198/transcatheter-aortic-valve-implantation-for-recurrent-valsalva-sinus-re-dissection-and-severe-aortic-regurgitation-shortly-after-surgery-for-type-a-aortic-dissection
#11
Elena Caporali, Giovanni Pedrazzini, Stefanos Demertzis, Enrico Ferrari
Delayed aortic regurgitation following Valsalva sinus re-dissection is a well-known complication that can occur at any time after surgery for type-A aortic dissection without root replacement. We describe a case of acute type-A dissection in an 81-year-old lady successfully treated with aortic valve resuspension and ascending aorta replacement with a 28-mm vascular graft. A month later, the patient was readmitted for worsening heart failure and a transthoracic echocardiogram showed severe aortic regurgitation secondary to non-coronary Valsalva sinus re-dissection and non-coronary aortic valve leaflet prolapse also confirmed at computed tomography scan...
May 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28534559/-gastric-volvulus-an-infrequent-cause-of-acute-abdominal-pain
#12
D Ruiz-Clavijo García, A Zuñiga Ripa, L Casanova Ortíz, I García de Eulate Martín-Moro, B González de la Higuera Carnicer, J Urman Fernández
Gastric volvulus (GV) is characterized by the abnormal rotation of a portion of the stomach around a horizontal or vertical axis that can cause obstruction, vascular disorder and even strangulation, and may evolve into necrosis or even perforation. It can be classified according to its aetiology into primary or secondary GV, according to its anatomy into axial organ or into axial mesenteric GV, and according to its presentation into chronic or acute GV. Both types of volvulus require treatment; however, in spite of the classic treatment being open surgery, there is no standard treatment, nor is there consensus on the alternative of choice at present...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28534322/-value-of-functional-magnetic-resonance-imaging-in-predicting-outcomes-of-neoadjuvant-chemoradiotherapy-in-rectal-cancer
#13
Yishan Yu, Jinbo Yue, Jinming Yu
Rectal cancer is one of the common cancers which poses a threat to the health of mankind. In recent years. Multi-modality treatment strategies for locally advanced rectal cancer improve the treatment efficiency. Accurate prediction of the treatment response after the neoadjuvant chemoradiotherapy (CRT) can guide more suitable treatment strategy. MERCURY study proved the prognostic value of post-CRT standard morphologic MRI(T2-weighted) assessment of tumor regression grade(TRG), and MRI assessment of circumferential resection margin can guide the definitive surgery...
May 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28532969/lip-reconstruction-using-a-functioning-serratus-anterior-free-flap-preliminary-study
#14
A O Gundeslioglu, E C Karadag, I Inan, L Jasharllari, M N Selimoglu, F Guney, B Yuruten, M Bekerecioglu
Reconstructive surgery to the lips requires the replacement of defective tissues with similarly functioning tissues. While non-dynamic free tissue transfers provide adequate lower lip reconstruction, improved benefits may be obtained with innervated free muscle flaps. This study reports the use of innervated serratus anterior muscle free flaps for lip reconstruction in five patients. All patients had squamous cell carcinoma of either the upper or lower lip. After resection of the tumours, the resultant defects comprised two-thirds of the lips...
May 19, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28532917/novel-anatomical-classification-of-spontaneous-thalamic-hemorrhage-classified-by-vascular-territory-of-thalamus
#15
Shinichiro Teramoto, Takuji Yamamoto, Yasuaki Nakao, Mitsuya Watanabe
BACKGROUND: Spontaneous thalamic hemorrhage has increased in incidence in recent years. The characteristics of thalamic hemorrhage were analyzed based on the vascular territories of the thalamus. METHODS: Retrospective analysis included 303 consecutive patients with spontaneous thalamic hemorrhage. Thalamic hemorrhage was classified into four types: anterior type (supplied mainly by the tuberothalamic artery), medial (mainly paramedian thalamic-subthalamic artery), lateral (mainly thalamogeniculate artery), and posterior (mainly posterior choroidal artery)...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28532698/validation-of-the-mayo-clinic-staging-system-in-determining-prognoses-of-patients-with-perihilar-cholangiocarcinoma
#16
Robert J S Coelen, Marcia P Gaspersz, Tim A Labeur, Jeroen L A van Vugt, Susan van Dieren, François E J A Willemssen, Chung Y Nio, Jan N M IJzermans, Heinz-Josef Klümpen, Bas Groot Koerkamp, Thomas M van Gulik
BACKGROUND AND AIMS: Most systems for staging perihilar cholangiocarcinoma (PHC) have been developed for the minority of patients with resectable disease. The recently developed Mayo Clinic system for staging PHC requires only clinical and radiological variables, but has not yet been validated. We performed a retrospective study to validate the Mayo Clinic staging system. METHODS: We identified consecutive patients with suspected PHC evaluated and treated at 2 tertiary centers in The Netherlands, from January 2002 through December 2014...
May 19, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28532448/the-effects-of-a-treatment-combination-of-anti-vegf-injections-laser-coagulation-and-cryotherapy-on-patients-with-type-3-coat-s-disease
#17
Songfeng Li, Guangda Deng, Jinghua Liu, Yan Ma, Hai Lu
BACKGROUND: To examined the curative effect of vitreous injection with ranibizumab,laser coagulation and cryotherapy in treating stage 3 Coats' disease with exudative retinal detachment. METHODS: Seventeen patients with stage 3 Coats' disease were enrolled in the study. All eyes were treated with vitreous injection of ranibizumab as initial treatment, and subsequent treatment depended on the absorption of subretinal fluid, Including cryotherapy and laser photocoagulation...
May 22, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28532389/the-use-of-macitentan-in-fontan-circulation-a-case-report
#18
Polyvios Demetriades, Amir Aziz, Robin Condliffe, Sarah E Bowater, Paul F Clift
BACKGROUND: The Fontan circulation, a result of a palliative procedure in patients with single systemic ventricles, is defined by chronically elevated pulmonary vascular resistance. When traditional heart failure therapies fail, pharmacological agents that reduce pulmonary artery pressures may be used. These include endothelial-receptor antagonists, prostanoids and phosphodiesterase type 5 inhibitors. We report the first use of macitentan, an endothelin-receptor antagonist, in a patient with a Fontan circulation...
May 22, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28531637/vascular-surgery-patients-nutrition-data
#19
Nikolaos Degermetzoglou, Marianna Kechagia, Ioannis Lazarides
No abstract text is available yet for this article.
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531564/protein-and-energy-intake-improved-by-breakfast-intervention-in-hospital
#20
T Beermann, M N Mortensen, L B Skadhauge, R H Høgsted, H H Rasmussen, Mette Holst
BACKGROUND/AIM: Undernutrition affects about 40% of patients in hospitals. Ordinary food is recommended as the first choice to prevent and correct undernutrition. Meanwhile, sufficient intake, especially regarding protein, is difficult to reach, in patients at nutritional risk. The aim of this study was to improve protein intake at breakfast to at least 20% of total daily requirement or at least 20 g. METHODS: A protein rich breakfast including 20 g of protein was served in the departments of heart and lung surgery and vascular surgery for three months...
June 2016: Clinical Nutrition ESPEN
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