Oxygen plasma treatments of polydimethylsiloxane surfaces: effect of the atomic oxygen on capillary flow in the microchannels

Micro & nano letters

article

Bartali Ruben¹  Morganti Elisa¹  Lorenzelli Leandro¹  Micheli Victor¹  Gottardi Gloria¹  Scarpa Marina²  Safeen Mian K¹  Rajesh Pandiyan¹  Laidani Nadhira¹ 

[1] Center for Materials and Microsystems IRST;Department of Physics, University of Trento;Department of Physics, Abdul Wali Khan University;Institut National de la Recherche Scientifique

关键词: oxygen;    plasma materials processing;    polymers;    microchannel flow;    capillarity;    hydrophilicity;    wetting;    adhesion;    contact angle;    plasma pressure;    discharges (electric);    oxygen plasma treatments;    polydimethylsiloxane surfaces;    atomic oxygen;    capillary flow;    microchannel flow;    polydimethylsoloxane-water interaction;    spontaneous water flux;    microfluidic applications;    hydrophilicity;    wettability;    adhesion;    sessile contact angle;    chemical composition;    optical emission spectroscopy;    plasma discharge;    plasma working pressure;    superhydrophilic PDMS microchannels;    power 15 W;    O2;   

DOI  :  10.1049/mnl.2017.0230

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Objective: Supraclavicular approach to subclavian vein catheterization is still being employed less often than traditional infraclavicular approach. The purpose of this study was to compare the two techniques regarding number of attempts, success rate of catheterization and complications associated with the procedure. Place of study: Surgical Intensive Care Unit (SICU) of Rehman Medical Institute, Peshawar (Pakistan). Duration of study: 1st June 2010 to 30th December 2010 Method: We included 144 adult patients of either sex undergoing central venous catheterization for various indications, selected by nonrandom sampling, in the study. They were divided into the supraclavicular and infraclavicular groups (72 in each group). Right subclavian vein of the patient was chosen in all patients for catheterization. Variables for comparison included number of attempts, success or failure of catheterization and complications associated with the procedure in each group. Statistical analysis was done by applying Chi-square test and Student’s Independent Samples T-test. Results: The overall success rate was 95.83% for right supraclavicular and 87.50% for right infraclavicular approach (p>0.05). The number of successful attempts for supraclavicular and infraclavicular approaches were 1.13 ± 0.42 and 1.35 ± 0.69 respectively (P=0.029). The complication rate was higher in the supraclavicular group, but the difference was not statistically significant. Conclusion: The supraclavicular approach to subclavian vein cannulation was found to be a more successful method for adult central venous catheterization with complications comparable to the more commonly used infraclavicular approach.

【 授权许可】

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