Blood gas analysis syringes containing spray-dosed droplet liquid heparin may decrease sample rejection ratios

The effects of different syringe volume, needle size and sample volume on blood gas analysis in syringes washed with heparin

INTRODUCTION We evaluated the effect of different syringe volume, needle size and sample volume on blood gas analysis in syringes washed with heparin. MATERIALS AND METHODS In this multi-step experimental study, percent dilution ratios (PDRs) and final heparin concentrations (FHCs) were calculated by gravimetric method for determining the effect of syringe volume (1, 2, 5 and 10 mL), needle s...

Liquid-in-gas Droplet Microfluidics

Here we demonstrate a novel concept of liquid-in-gas droplet microfluidics by using gas flow as the continuous phase for the production of liquid droplets. Within a specially configured co-flow microfluidic tubing device, a flow of liquid phase has been continuously dispersed into another outer stream of gas phase, producing discrete and monodisperse microdroplets. This process is robust and we...

Droplet formation in sheared liquid-gas layers

Analysis of 3-O-sulfo group-containing heparin tetrasaccharides in heparin by liquid chromatography-mass spectrometry.

Complete heparin digestion with heparin lyase 2 affords a mixture of disaccharides and resistant tetrasaccharides with 3-O-sulfo group-containing glucosamine residues at their reducing ends. Quantitative online liquid chromatography-mass spectrometric analysis of these resistant tetrasaccharides is described in this article. The disaccharide and tetrasaccharide compositions of seven porcine int...

Prediction of Droplet Size and Velocity Distribution in Droplet Formation Region of Liquid Spray

Determining the distributions of size and velocity of droplets formed at the end of primary breakup region is followed in this paper. The droplet formation stage at the end of primary breakup is random and stochastic and it can be modeled by statistical means based on the maximum entropy principle (MEP). The MEP formulation predicts the atomization process while satisfying constraint equations ...