Simple keel fixation technique for endoscopic repair of anterior glottic stenosis

2007 ◽  
Vol 2007 ◽  
pp. 131-133 ◽  
Author(s):  
M.A. Keefe
Keyword(s):  
Fixation Technique ◽  
Endoscopic Repair

Simple keel fixation technique for endoscopic repair of anterior glottic stenosis

2006 ◽  
Vol 120 (4) ◽  
pp. 322-324 ◽  
Author(s):  
S H Liyanage ◽  
S Khemani ◽  
S Lloyd ◽  
R Farrell
Keyword(s):  
Simple Technique ◽  
Anterior Commissure ◽  
Laser Vaporization ◽  
Fixation Technique ◽  
Endoscopic Repair

The use of keels in the treatment of anterior glottic stenosis is well established. A variety of methods for keel fixation have previously been documented. We describe a simple technique of securing a Silastic keel, placed endoscopically, with a simple percutaneous suture, after laser vaporization of an anterior commissure web.

Triple Fixation For Electron Microscopy

1968 ◽  
Vol 26 ◽  
pp. 90-91 ◽  
Author(s):  
M. A. Hayat
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Electron Beam ◽  
Plasma Membrane ◽  
Myelin Sheath ◽  
Good Deal ◽  
Granular Structure ◽  
Oxidizing Agent ◽  
Fixation Technique ◽  
Large Clusters

Potassium permanganate has been successfully employed to study membranous structures such as endoplasmic reticulum, Golgi, plastids, plasma membrane and myelin sheath. Since KMnO4 is a strong oxidizing agent, deposition of manganese or its oxides account for some of the observed contrast in the lipoprotein membranes, but a good deal of it is due to the removal of background proteins either by dehydration agents or by volatalization under the electron beam. Tissues fixed with KMnO4 exhibit somewhat granular structure because of the deposition of large clusters of stain molecules. The gross arrangement of membranes can also be modified. Since the aim of a good fixation technique is to preserve satisfactorily the cell as a whole and not the best preservation of only a small part of it, a combination of a mixture of glutaraldehyde and acrolein to obtain general preservation and KMnO4 to enhance contrast was employed to fix plant embryos, green algae and fungi.

DISCONNECTED PANCREATIC DUCT SYNDROME (DPDS): ENDOSCOPIC REPAIR BY MEANS OF STAGED EUS-GUIDED PANCREATICO-GASTROSTOMY (EUS-PG) COMBINED WITH ERCP

2020 ◽  
Author(s):  
R Sánchez-Ocaña ◽  
G Salazar ◽  
C Chavarria Herbozo ◽  
C Chavarría ◽  
J Garcia Alonso ◽  
...  
Keyword(s):  
Pancreatic Duct ◽  
Endoscopic Repair ◽  
Duct Syndrome

Endoscopic Repair of Expanded Endonasal Skull Base Defects Using a Stable Bilayer “Button” Closure

Skull Base ◽  
2009 ◽  
Vol 19 (03) ◽  
Author(s):  
Adam Luginbuhl ◽  
James Evans ◽  
Zachary Louderback ◽  
Jared Goldfarb ◽  
Marc Rosen
Keyword(s):  
Skull Base ◽  
Endoscopic Repair ◽  
Skull Base Defects

CHEMISTRY OF GONADOTROPHINS IN RELATION TO THEIR ANTIGENIC PROPERTIES

1969 ◽  
Vol 62 (1_Suppl) ◽  
pp. S13-S30 ◽  
Author(s):  
W. R. Butt
Keyword(s):  
Biological Activity ◽  
Guinea Pigs ◽  
Complement Fixation ◽  
Neuraminic Acid ◽  
Fixation Technique ◽  
Immunological Activity ◽  
Antigenic Properties ◽  
Specific Antisera ◽  
Structural Differences

ABSTRACT Several chemical differences between FSH, LH and HCG have been reported: thus LH and HCG are richer in proline than FSH and FSH and HCG contain more N-acetyl neuraminic acid than LH. Sub-units of LH are formed by treatment with urea, guanidine or acid. HCG also may contain two sub-units. The sub-units from LH are biologically inert but retain their immunological activity: biological activity is restored when the sub-units are incubated together. There is much evidence from chemical and enzymic reactions that antigenic groups are distinct from those parts of the molecule essential for biological activity. N-acetyl neuraminic acid and probably other carbohydrates in FSH and HCG are not involved in immunological activity but are necessary for biological activity. Histidine, methionine and possibly cysteine appear to be essential for biological but not immunological activity of FSH, while tryptophan and possibly tyrosine are not essential for either. A few highly specific antisera to gonadotrophins have been prepared in rabbits and guinea pigs to crude antigens: there is no evidence that purified antigens are more likely to produce specific antisera. Differences in the immunological reactivities of urinary compared with pituitary gonadotrophins have been observed both by radioimmunoassay and by the complement fixation technique. The latter may be particularly useful for detecting structural differences in the hormones.

scholarly journals Bilateral Choanal Atresia and Endoscopic Surgery: A Chance for CHARGE Patients

2021 ◽  
Vol 10 (13) ◽  
pp. 2951
Author(s):  
Maria Baldovin ◽  
Diego Cazzador ◽  
Claudia Zanotti ◽  
Giuliana Frasson ◽  
Athanasios Saratziotis ◽  
...  
Keyword(s):  
Congenital Malformation ◽  
Endoscopic Surgery ◽  
Granulation Tissue ◽  
Choanal Atresia ◽  
Tissue Formation ◽  
Endoscopic Repair ◽  
Granulation Tissue Formation ◽  
Charge Association ◽  
Cohort Data

Bilateral choanal atresia (CA) is a rare congenital malformation frequently associated with other anomalies. CHARGE association is closely linked to bilateral CA. The aim of this study was to describe the outcomes of the endoscopic repair in bilateral CA, and to assess the role of postoperative nasal stenting in two cohorts of CHARGE-associated and non-syndromic CA. Thirty-nine children were retrospectively analyzed (16 patients had CHARGE-associated CA). The rate of postoperative neochoanal restenosis was 31.3% in the CHARGE population, and 47.8% in the non-syndromic CA cohort. Data on postoperative synechiae and granulation tissue formation, need for endonasal toilette and dilation procedures, and number of procedures per patient were presented. Stent positioning led to a higher number of postoperative dilation procedures per patient in the non-syndromic cohort (p = 0.018), and to a higher rate of restenosis both in the CHARGE-associated, and non-syndromic CA populations. Children with CHARGE-associated and non-syndromic bilateral CA benefitted from endonasal endoscopic CA correction. The postoperative application of an endonasal stent should be carefully evaluated.

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