scholarly journals VP22.04: 91 consecutive TTTS cases with selective technique

2020 ◽  
Vol 56 (S1) ◽  
pp. 149-149
Author(s):  
M. Yamamoto ◽  
D. Pedraza ◽  
J. Astudillo ◽  
H. Figueroa
Keyword(s):  
Selective Technique

P11.06: 67 TTTS cases treated in a single centre in Santiago with classical selective technique

2015 ◽  
Vol 46 ◽  
pp. 158-158
Author(s):  
M. Yamamoto ◽  
B. Walker Labarca ◽  
J. Fleiderman ◽  
D. Pedraza ◽  
J. Astudillo
Keyword(s):  
Single Centre ◽  
Selective Technique

Nutrition carbonée et étude taxonomique de Bacillus megaterium et B. cereus

1980 ◽  
Vol 26 (7) ◽  
pp. 778-786 ◽  
Author(s):  
F. Pichinoty ◽  
M. Durand ◽  
M. Mandel
Keyword(s):  
Bacillus Cereus ◽  
Bacillus Megaterium ◽  
Numerical Taxonomy ◽  
Soil Samples ◽  
Mean Values ◽  
Enrichment Cultures ◽  
Group A ◽  
Group B ◽  
Peptone Medium ◽  
Selective Technique

Ten of the 14 strains of Bacillus cereus studied were isolated from pasteurized soil samples by a new selective technique which consists of the use of anaerobic enrichment cultures in peptone medium containing 0.5% KNO3. The 19 strains of B. megaterium use the following 21 sources of carbon and energy: D-glucose, D-galactose, D-fructose, D-mannose, D-glucosamine, D-gluconate, D-ribose, sucrose, cellobiose, maltose, raffinose, D-mannitol, glycerol, glycerate, pyruvate, fumarate, trans-aconitate, DL-aspartate, asparagine, L-glutamate, and L-glutamine. The 14 strains of B. cereus use the following 11 compounds: D-glucose, D-fructose, D-mannose, D-glucosamine, D-ribose, maltose, trehalose, glycerol, acetate, pyruvate, and L-glutamine. The eight strains of B. cereus var. mycoides use the following nine compounds: D-glucose, salicin, D-ribose, cellobiose, maltose, trehalose, glycerol, acetate, and pyruvate. Numerical taxonomy based on 151 characters shows that the 41 strains form two distinct groups. Group A includes the 19 strains of B. magateriurn; group B includes the 14 strains of B. cereus and the 8 strains of B. cereus var. mycoides. The guanine + cytosine content of the DNA of each strain was determined. The following mean values were obtained: B. megaterium, 40.6% ± 0.8; B. cereus, 38% ± 0.9; B. cereus var. mycoides, 38.4% ± 1.1.

scholarly journals Laser Treatment of Twin–to–Twin Transfusion Syndrome

2016 ◽  
Vol 19 (3) ◽  
pp. 197-206 ◽  
Author(s):  
Rubén A. Quintero ◽  
Eftichia Kontopoulos ◽  
Ramen H. Chmait
Keyword(s):  
Laser Ablation ◽  
Laser Surgery ◽  
Surgical Techniques ◽  
Placental Tissue ◽  
Successful Completion ◽  
Surgical Performance ◽  
Potential Source ◽  
And Performance ◽  
Solomon Technique ◽  
Selective Technique

Objective: Laser ablation of all placental vascular anastomoses is the optimal treatment for twin–twin transfusion syndrome (TTTS). However, two important controversies are apparent in the literature: (a) a gap between concept and performance, and (b) controversy regarding whether all the anastomoses can be identified endoscopically and whether blind lasering of healthy placenta is justified. The purpose of this article is: (a) to address the potential source of the gap between concept and performance by analyzing the fundamental steps needed to successfully accomplish the surgery, and (b) to discuss the resulting competency benchmarks reported with the different surgical techniques. Materials and Methods: Laser surgery for TTTS can be broken down into two fundamental steps: (1) endoscopic identification of the placental vascular anastomoses, (2) laser ablation of the anastomoses. The two steps are not synonymous: (a) regarding the endoscopic identification of the anastomoses, the non-selective technique is based upon lasering all vessels crossing the dividing membrane, whether anastomotic or not. The selective technique identifies and lasers only placental vascular anastomoses. The Solomon technique is based on the theory that not all anastomoses are endoscopically visible and thus involves lasering healthy areas of the placenta between lasered anastomoses, (b) regarding the actual laser ablation of the anastomoses, successful completion of the surgery (i.e., lasering all the anastomoses) can be measured by the rate of persistent or reverse TTTS (PRTTTS) and how often a selective technique can be achieved. Articles representing the different techniques are discussed. Results: The non-selective technique is associated with the lowest double survival rate (35%), compared with 60–75% of the Solomon or the Quintero selective techniques. The Solomon technique is associated with a 20% rate of residual patent placental vascular anastomoses, compared to 3.5–5% for the selective technique (p < .05). Both the Solomon and the selective technique are associated with a 1% risk of PRTTTS. Adequate placental assessment is highest with the selective technique (99%) compared with the Solomon (80%) or the ‘standard’ (60%) techniques (p < .05). A surgical performance index is proposed. Conclusion: The Quintero selective technique was associated with the highest rate of successful ablation and lowest rate of PRTTTS. The Solomon technique represents a historical backward movement in the identification of placental vascular anastomoses and is associated with higher rate of residual patent vascular communications. The reported outcomes of the Quintero selective technique do not lend support to the existence of invisible anastomoses or justify lasering healthy placental tissue.

Heteronuclear NMR Spectroscopy as a Surface-Selective Technique: A Unique Look at the Hydroxyl Groups of γ-Alumina.

2014 ◽  
Vol 20 (14) ◽  
pp. 4038-4046 ◽  
Author(s):  
Mostafa Taoufik ◽  
Kai C. Szeto ◽  
Nicolas Merle ◽  
Iker Del Rosal ◽  
Laurent Maron ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Heteronuclear Nmr ◽  
Hydroxyl Groups ◽  
Heteronuclear Nmr Spectroscopy ◽  
Selective Technique

Removal of metal and organic pollutants from wastewater by a sequential selective technique

2016 ◽  
Vol 213 ◽  
pp. 2-10 ◽  
Author(s):  
M. Cobas ◽  
A.S. Danko ◽  
M. Pazos ◽  
M.A. Sanromán
Keyword(s):  
Organic Pollutants ◽  
Removal Of Metal ◽  
Selective Technique
Sign in / Sign up

Export Citation Format

Share Document