Background: There have been numerous reports of techniques used for pectus bar removal after correction of pectus excavatum. We use 2 operating tables positioned perpendicular to each other in a T-shaped configuration with the patients thorax circumferentially exposed so the bar is removed in 1 motion without bending the bar. In this study, we report the results of this procedure.
Methods: A retrospective chart review of patients undergoing bar removal after repair of pectus excavatum at our institution from August 2000 to March 2010 was performed.
Results: There were 230 patients with a mean age of 16.7 years (range, 7.8-25.3 years) at bar removal. Mean operative time for bar removal was 28.6 minutes, and average estimated blood loss (EBL) was 9.5 mL (range, 5-400 mL). One patient demonstrated significant hemorrhage from the bar tract after bar removal, which was controlled with circumferential compression wrap. Calcification was noted in 11 patients, and chondroma, in 8 patients. Wound infection after bar removal occurred in 3% of patients. No patient required the bar to be bent into a straight configuration for removal.
Conclusions: Removal of pectus bars using this 2-table T-configuration technique is safe, is time efficient, and obviates the need for bending the bar.
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http://dx.doi.org/10.1016/j.jpedsurg.2011.07.023 | DOI Listing |
Int J Biol Macromol
January 2025
Key Laboratory of Pulp and Paper Science and Technology of Shandong Province, Ministry of Education, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, Shandong, China.
The high salt content and color are regarded as a major challenge to the reuse of industrial wastewater. In the present study, the application of cellulose acetate reverse osmosis (RO) membrane in combination with microfiltration (MF), ultrafiltration (UF), or nanofiltration (NF) process was investigated in the purification of biological and Fenton treated pulp and paper wastewater. In the first step, the effect of pH and inlet pressures on the membrane fouling was investigated.
View Article and Find Full Text PDFEnviron Sci Technol
January 2025
Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
Polyelectrolyte multilayer (PEM) membranes, with advantageous features of versatile chemistry and structures, are driving the development of advanced nanofiltration (NF) membranes with exceptional performance. While developing a printing method holds great promise for the eventual mass production of these membranes, reports on the printing method and the underlying mechanisms of membrane formation are currently scarce. Herein, we develop an aerosol-assisted printing (AAP) system for fabricating PEM NF membranes with highly tunable separation characteristics.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China; Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Provincial Key Laboratory of Resources and Chemistry of Salt Lakes, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China. Electronic address:
The clogging of sieving pores due to the complex sewage system of mixed molecules and nanoparticles of different scales is a difficulty in the membrane-based separation process. When the holes are reduced to the point where they can repel small molecules in the contaminants, large-molecule contaminants can adsorb to the holes and decrease the permeability. A similar question remains in new promising graphene oxide (GO) membranes.
View Article and Find Full Text PDFSensors (Basel)
January 2025
School of Mechanical, Aerospace & Civil Engineering, University of Sheffield, Sheffield S1 3JD, UK.
Stress wave dispersion can result in the loss or distortion of critical high-frequency data during high-strain-rate material tests or blast loading experiments. The purpose of this work is to demonstrate the benefits of correcting stress wave dispersion in split-Hopkinson pressure bar experiments under various testing situations. To do this, an innovative computational algorithm, SHPB_Processing.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Department of Environmental Engineering, Istanbul University-Cerrahpaşa, Avcilar, Istanbul 34320, Turkey.
In this study, polysulfone/polyvinylpyrrolidone (PSf/PVP, 20 wt%/5 wt%)-based ultrafiltration (UF) membranes reinforced with different ratios (0.5 and 1 wt%) of cellulose nanocrystals (CNCs) and cellulose nanofibres (CNFs) were prepared by the phase inversion method. The effect of CNC, CNF, and CNC-CNF reinforcement on the morphology, roughness, crystallinity, porosity, average pore size, mechanical properties, and filtration performance of PSf/PVP-based membrane was investigated.
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