Breaking strength and elasticity of synthetic absorbable suture materials incubated in phosphate-buffered saline solution, milk, and milk contaminated withStreptococcus agalactiae

2007 ◽  
Vol 68 (4) ◽  
pp. 441-445 ◽  
Author(s):  
Sylvain Nichols ◽  
David E. Anderson
Keyword(s):  
Saline Solution ◽  
Breaking Strength ◽  
Absorbable Suture ◽  
Suture Materials ◽  
Phosphate Buffered Saline

Absorbable suture material in carotid surgery

VASA ◽  
2015 ◽  
Vol 44 (6) ◽  
pp. 451-457 ◽  
Author(s):  
Vincenzo Gasbarro ◽  
Luca Traina ◽  
Francesco Mascoli ◽  
Vincenzo Coscia ◽  
Gianluca Buffone ◽  
...  
Keyword(s):  
Suture Material ◽  
Absorbable Suture ◽  
Paediatric Surgery ◽  
Carotid Surgery ◽  
Suture Materials ◽  
Absorbable Suture Material ◽  
Absorbable Sutures ◽  
Group A ◽  
Group B

Abstract. Background: Absorbable sutures are not generally accepted by most vascular surgeons for the fear of breakage of the suture line and the risk of aneurysmal formation, except in cases of paediatric surgery or in case of infections. Aim of this study is to provide evidence of safety and efficacy of the use of absorbable suture materials in carotid surgery. Patients and methods: In an 11 year period, 1126 patients (659 male [58.5 %], 467 female [41.5 %], median age 72) underwent carotid endarterectomy for carotid stenosis by either conventional with primary closure (cCEA) or eversion (eCEA) techniques. Patients were randomised into two groups according to the type of suture material used. In Group A, absorbable suture material (polyglycolic acid) was used and in Group B non-absorbable suture material (polypropylene) was used. Primary end-point was to compare severe restenosis and aneurysmal formation rates between the two groups of patients. For statistical analysis only cases with a minimum period of follow-up of 12 months were considered. Results: A total of 868 surgical procedures were considered for data analysis. Median follow-up was 6 years (range 1-10 years). The rate of postoperative complications was better for group A for both cCEA and eCEA procedures: 3.5 % and 2.0 % for group A, respectively, and 11.8 % and 12.9 % for group B, respectively. Conclusions: In carotid surgery, the use of absorbable suture material seems to be safe and effective and with a general lower complications rate compared to the use of non-absorbable materials.

scholarly journals Obstructive pneumonia owing to migration of a Teflon pledget at 8 years after surgery for a pulmonary carcinoid tumor: a case report

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Hikaru Watanabe ◽  
Kohei Abe ◽  
Naoki Kanauchi
Keyword(s):  
General Anesthesia ◽  
Carcinoid Tumor ◽  
Suture Material ◽  
Rare Complication ◽  
Absorbable Suture ◽  
Suture Materials ◽  
Bronchial Stump ◽  
Flexible Bronchoscope ◽  
Pulmonary Carcinoid ◽  
Bronchial Lumen

Abstract Background It is uncommon for a bronchial stump-related complication to develop during the remote postoperative period in a case of obstructive pneumonia owing to migration of the suture material. Here, we describe a case of bronchial obstructive pneumonia that developed owing to migration of the suture material in the airway 8 years after pulmonary resection. Case presentation A 34-year-old woman underwent left lower lobectomy for a pulmonary carcinoid tumor (pT1bN0M0-stage IA) in 2010. She experienced obstructive pneumonia, and chest computed tomography revealed a mass protruding from the bronchial stump to the bronchial lumen in 2018. After treatment for pneumonia, flexible bronchoscopy showed the presence of a fibrous suture material (Teflon pledget) completely obstructing the left second carina. A week later, the Teflon pledget obstructing the bronchial lumen was removed using a flexible bronchoscope with the patient under general anesthesia. The procedure was completed without removing the small amount of granulation tissue because the bronchial lumen opened after removing the Teflon pledget. She has remained asymptomatic for 1 year after removal. Conclusions In this case, the complication of obstructive pneumonia developed owing to migration of the non-absorbable suture materials used to suture the bronchial stump. Bronchoscopic management of this rare complication comprised endobronchial removal with the patient under general anesthesia. Given our experience with this case, we believe that such conservative management should allow for excellent results in most instances and avoid the need for reoperation.

scholarly journals DC and AC Conductivity, Biosolubility and Thermal Properties of Mg-Doped Na2O–CaO–P2O5 Glasses

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2626
Author(s):  
Natalia Anna Wójcik ◽  
Sharafat Ali ◽  
Jakub Lech Karczewski ◽  
Bo Jonson ◽  
Michał Bartmański ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Saline Solution ◽  
Glass Structure ◽  
Glass Network ◽  
Bioactive Glasses ◽  
Dc And Ac Conductivity ◽  
Impedance Spectroscopy Technique ◽  
Mg Content ◽  
Phosphate Buffered Saline ◽  
Mg Doped

Bioactive glasses have recently been extensively used to replace, regenerate, and repair hard tissues in the human body because of their ability to bond with living tissue. In this work, the effects of replacing Na2O with MgO on the electrical, biosolubility, and thermal properties of the target glass 10Na2O–60P2O5–30CaO (in mol%) were investigated. The electrical properties of the glasses were studied with the impedance spectroscopy technique. At 473 K, DC conductivity values decreased from 4.21 × 10−11 to 4.21 × 10−12 S cm−1 after complete substitution of MgO for Na2O. All samples had a similar activation energy of the DC conduction process ~1.27 eV. Conduction mechanisms were found to be due to hop of ions: Na+, Mg2+, and probable H+. FTIR analysis showed that, as the Mg content increased, the Q2 unit (PO2−) shifted towards higher wavenumbers. The proportion of Q3 unit (P2O5) decreased in the glass structure. This confirmed that the replacement of Na+ by Mg2+ was accompanied by concurrent polymerization of the calcium–phosphate glass network. The biosolubility test in the phosphate-buffered saline solution showed that the magnesium addition enhanced the biosolubility properties of Na2O–CaO–P2O5 glasses by increasing their dissolution rate and supporting forming CaP-rich layers on the surface. The glass transition temperature increased, and thermal stability decreased substantially upon substitution of Na2O by MgO.

scholarly journals A new model of reversible obstructive jaundice using rapidly absorbable suture materials

2012 ◽  
Vol 35 (6) ◽  
pp. 351 ◽  
Author(s):  
Nurettin Kahramansoy ◽  
Hayri Erkol ◽  
Edip E Yilmaz ◽  
Mustafa Şit ◽  
Fahri Yilmaz ◽  
...  
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
Obstructive Jaundice ◽  
Surgical Intervention ◽  
Bile Duct Ligation ◽  
Absorbable Suture ◽  
Suture Materials ◽  
Common Bile Duct Ligation ◽  
Duct Ligation ◽  
Morphologic Changes

Purpose: Reversible obstructive jaundice models have some limiting features, including the need for a second anaesthesia, re-laparotomy and surgical intervention after common bile duct ligation. The present study investigates the feasibility of a new application that can eliminate these limitations. Rapidly absorbable suture materials were used for ligation; therefore, spontaneous biliary decompression was anticipated by the self release of these rapidly degrading materials. Methods: Common bile ducts in Wistar Albino rats were ligated with silk, polyglytone 6211, or irradiated polyglactine 910 (n=7 for each group). Rats were grouped according to both the suture materials and the experiments termination date: 5 days (sham, silk5, polyglytone5, polyglactine5) and 21 days (silk21, polyglytone21, polyglactine21) after the ligation. Biochemical and morphologic changes of liver were assessed. Results: The group polyglactine21 showed significantly lower mean ALT, AST, GGT, total and direct bilirubin values when compared with the group polyglactine5 (p=0.004-0.037). Morphologic changes did not correlate with the biochemical amelioration. In the group polyglytone21, not only the biochemical but also the morphologic changes significantly ameliorated when compared with the group polyglytone5 (p=0.003-0.043). No procedure associated mortality was observed. Conclusion: Common bile duct ligation with polyglytone offers a new reversible model for prolonged obstructive jaundice which abolishes the need for relaparotomy and a second surgical intervention and significantly reduces mortality.

Effectiveness of cerclage for the prevention of premature birth depending on the suture material used

2020 ◽  
Vol 18 (6) ◽  
pp. 30-33
Author(s):  
O. V. YAKOVLEVA ◽  
◽  
A. G. YASHCHUK ◽  
A. V. MASLENNIKOV ◽  
A. A. TYURINA ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Suture Material ◽  
Neonatal Outcomes ◽  
Absorbable Suture ◽  
Silk Thread ◽  
Suture Materials ◽  
Significant Difference ◽  
Suture Complications ◽  
Group 2 ◽  
Duration Of Pregnancy

The purpose — to compare the effectiveness of cerclage to reduce the frequency of preterm birth when using non-absorbable suture material in the form of a braided silk thread (4 mm) and a braided tape (5 mm), as well as to identify the frequency of complications when using them. Material and methods. A retrospective analysis of cases and childbirth was conducted, as well as the analysis of own experience of applying cerclage with various suture materials in patients with isthmic-cervical insufficiency. A total of 157 patients were examined. Pregnancy outcomes, neonatal outcomes, and post-suture complications were evaluated. Results. 157 women were given cerclage at gestation periods of 14 to 23 weeks. There was no significant difference in the choice of suture material relative to the duration of pregnancy. Cerclage with thread was performed in 92 patients (58,6%) — group 1 and 65 patients were sutured with tape (41,4%) — group 2. Preterm birth occurred in 28 patients of the 2nd comparison group (18%) and 45 patients of the 1st group (29%). The duration of pregnancy in preterm birth was comparable in both groups. Conclusions. The study found that preterm birth after cerclage using a braided tape occurred less frequently than with the use of a braided silk thread. There were no significant differences in neonatal outcomes in the comparison groups. Complications after cerclage, such as suture and cervical rupture, were found only in the group of women who underwent surgery using a woven silk thread.

Comparison of different absorbable suture materials in skin closure: An experimental study in rats

2005 ◽  
Vol 17 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Muzaffer Aslan ◽  
M. Cemil Büyükkurt ◽  
Ü Yildirim
Keyword(s):  
Experimental Study ◽  
Skin Closure ◽  
Absorbable Suture ◽  
Suture Materials

scholarly journals Survival Rate of Cells Sent by a Low Mechanical Load Tube Pump: The “Ring Pump”

Micromachines ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 447 ◽  
Author(s):  
Kaoru Uesugi ◽  
Keizo Nishiyama ◽  
Koki Hirai ◽  
Hiroaki Inoue ◽  
Yoichi Sakurai ◽  
...  
Keyword(s):  
Survival Rate ◽  
Cell Survival ◽  
Saline Solution ◽  
Mechanical Load ◽  
Survival Rates ◽  
Cell Culture System ◽  
Large Size ◽  
Cell Survival Rate ◽  
Peristaltic Pumps ◽  
Phosphate Buffered Saline

A ring pump (RP) is a useful tool for microchannels and automated cell culturing. We have been developing RPs (a full-press ring pump, FRP; and a mid-press ring pump, MRP). However, damage to cells which were sent by the RP and the MRP was not investigated, and no other studies have compared the damage to cells between RPs and peristaltic pumps (PPs). Therefore, first, we evaluated the damage to cells that were sent by a small size FRP (s-FRP) and small size MRPs (s-MRPs; gap = 25 or 50 μm, respectively). “Small size” means that the s-FRP and the s-MRPs are suitable for microchannel-scale applications. The survival rate of cells sent by the s-MRPs was higher than those sent by the s-FRP, and less damage caused by the former. Second, we compared the survival rate of cells that were sent by a large size FRP (l-FRP), a large size MRP (l-MRP) (gap = 50 μm) and a PP. “Large size” means that the l-FRP and the l-MRP are suitable for automated cell culture system applications. We could not confirm any differences among the cell survival rates. On the other hand, when cells suspended in Dulbecco’s phosphate-buffered saline solution were circulated with the l-MRP (gap = 50 μm) and the PP, we confirmed a difference in cell survival rate, and less damage caused by the former.

SCANNING ION MICROBEAM ANALYSIS OF DIFFUSION IN IN-MOUTH DRUG RELEASE POLYMERS

2005 ◽  
Vol 15 (03n04) ◽  
pp. 161-167 ◽  
Author(s):  
G. MASSINGHAM ◽  
R. ARSLANOGLU ◽  
F. E. GAUNTLETT ◽  
M. S. RIHAWY ◽  
R. W. SMITH ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Nuclear Reaction ◽  
Drug Delivery Systems ◽  
Saline Solution ◽  
Pure Water ◽  
X Ray ◽  
Preliminary Results ◽  
Water Infusion ◽  
Phosphate Buffered Saline

With the aim of characterizing polymer-based drug delivery systems a combination of Scanning MeV 3 He microbeam Nuclear Reaction, Backscattering and Particle Induced X-ray Emission (PIXE) techniques has been developed. This, together with gravimetric and UV techniques has been applied to characterize both water infusion and drug effusion for three in-mouth polymer–drug systems. Preliminary results are presented from the exposure of polymers, containing drug at a level of 9% by weight of the dry polymer, to both pure water and a phosphate buffered saline solution at 37°C.

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