Hospital Readmission Rates Following AMI: Potential Interventions to Improve Efficiency

A sensitive method for the simultaneous analysis of vitamin A (VA), 25-hydroxyl vitamin D 3 (25-OH VD 3 ) and ±-tocopherol (VE) in children plasma by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed and validated. Sample preparation chose the solid phase extraction. 100L of plasma was mixed with 300L ethanol contained 4L isotope-labelled analytes. After a series operation, the supernatant was applied to the solid phase extraction (SPE) plate (HLB Elution plate). The eluate was evaporated, and reconstituted in 100L methanol. And then, 6L reconstituted sample was injected into LC-MS/MS. Quantitative analysis was carried out by multiple reaction monitoring (MRM) with a positive mode electrospray (ESi+). Separations of VA, 25-OH VD 3 and VE were performed on an Acquity UPLC reversed-phase Phenyl-Hexyl analytical column (CSH, 2.150mm, 1.7m). Gradient elution was used at a flow rate of 0.4mL/min with a phase consisting of 0.1% formic acid solution and 0.1% formic acid, 5mM ammonium formate in acetonitrile.

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ACQUITY - Xselect CSH Phenyl-Hexyl Method Transfer Kit, 130Å, 1.7 - 3.5 µm, 2.1 - 4.6 mm X 100 - 1...

186005536

ACQUITY - Xselect CSH Phenyl-Hexyl Method Transfer Kit, 130Å, 1.7 - 3.5 µm, 2.1 - 4.6 mm X 50 - 10...

186005533

ACQUITY - Xselect CSH Phenyl-Hexyl Method Transfer Kit, 130Å, 1.7 - 5 µm, 2.1 - 4.6 mm X 50 - 150m...

186005530

ACQUITY PREMIER CSH Phenyl-Hexyl Column 1.7 µm, 2.1 x 50 mm, 1/pk

186009474

ACQUITY PREMIER CSH Phenyl-Hexyl Column with VanGuard FIT, 1.7 µm, 2.1 x 150 mm, 1/pk

186009479

ACQUITY PREMIER CSH Phenyl-Hexyl Column with VanGuard FIT, 1.7 µm, 2.1 x 50 mm, 1/pk

186009477

ACQUITY PREMIER CSH Phenyl-Hexyl Column with VanGuard FIT, 1.7 µm, 2.1 x 100 mm, 1/pk

186009478

ACQUITY PREMIER CSH Phenyl-Hexyl Column 1.7 µm, 2.1 x 100 mm, 1/pk

186009475

ACQUITY PREMIER CSH Phenyl-Hexyl Column 1.7 µm, 2.1 x 150mm, 1/pk

186009476

ACQUITY PREMIER CSH Phenyl-Hexyl VanGuard FIT Cartridge, 1.7 µm, 2.1 x 5 mm, 3/pk

186009480

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 150 mm, 3/pkg

176002160

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 30 mm, 3/pkg

176002162

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 100 mm, 3/pkg

176002159

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 50 mm, 3/pkg

176002161

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 100 mm, 3/pkg

176002164

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 50 mm, 3/pkg

176002163

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 150 mm, 3/pkg

176002165

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 50 mm, 1/pkg

186005406

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 100 mm, 1/pkg

186005407

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 150 mm, 1/pkg

186005408

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 100 mm, 1/pkg

186005402

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 150 mm, 1/pkg

186005403

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 1 mm X 50 mm, 1/pkg

186005404

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 30 mm, 1/pkg

186005405

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 2.1 mm X 75 mm, 1/pkg

186005621

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 100 mm, 1/pkg

186005411

ACQUITY UPLC CSH Phenyl-Hexyl Method Validation Kit, 130Å, 1.7 µm, 3 mm X 100 mm, 3/pkg

186005582

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 75 mm, 1/pkg

186005624

ACQUITY UPLC CSH Phenyl-Hexyl Method Validation Kit, 130Å, 1.7 µm, 2.1 mm X 100 mm, 3/pkg

186005580

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 30 mm, 3/pkg

176002166

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 50 mm, 3/pkg

176002167

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 100 mm, 3/pkg

176002168

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 150 mm, 3/pkg

176002169

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 30 mm, 1/pkg

186005409

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 150 mm, 1/pkg

186005412

ACQUITY UPLC CSH Phenyl-Hexyl Column, 130Å, 1.7 µm, 3 mm X 50 mm, 1/pkg

186005410

ACQUITY UPLC CSH Phenyl-Hexyl Method Validation Kit, 130Å, 1.7 µm, 2.1 mm X 150 mm, 3/pkg

186006017

ACQUITY UPLC CSH Phenyl-Hexyl Method Validation Kit, 130Å, 1.7 µm, 2.1 mm X 50 mm, 3/pkg

186005579

ACQUITY UPLC CSH Phenyl-Hexyl VanGuard Pre-column, 130Å, 1.7 µm, 2.1 mm X 5 mm, 3/pkg

186005413