A simple, fast and inexpensive approach to quantify low concentrations of iron in biodiesel by voltammetry after extraction induced by microemulsion breaking.

An alternative approach to assay iron (Fe) in biodiesel by differential pulse adsorptive cathodic stripping voltammetry (DPAdCSV) is presented herein. The sample treatment involved a simple, rapid, but effective extraction of Fe from biodiesel into an aqueous phase after microemulsion (ME) breaking. Then, Fe was determined as the complex Fe(III)-PAN (1-(2-pyridylazo)-2-naphthol) on a glassy carbon electrode (GCE) in the presence of bismuth (Bi(III)).

Effect of Emergency Physician-Performed Point-of-Care Ultrasound and Radiology Department-Performed Ultrasound Examinations on the Emergency Department Length of Stay Among Pregnant Women at Less Than 20 Weeks' Gestation.

Objectives: We sought to confirm retrospective studies that measured an approximately 20% reduction in emergency department (ED) length of stay (LOS) in early-gestation pregnant women who receive emergency physician-performed point-of-care ultrasound (US) examinations rather than radiology department-performed US examinations for evaluation of intrauterine pregnancy (IUP).

Methods: A randomized controlled clinical trial was performed at an urban academic safety net hospital and 2 Naval medical centers in the United States. The allocation was concealed before enrollment.

Ultrasound-Guided Peripheral Intravenous Access Program for Emergency Physicians, Nurses, and Corpsmen (Technicians) at a Military Hospital.

Background: Peripheral intravenous (PIV) access is a common procedure in the emergency department (ED). However, conditions such as obesity and hypovolemia can often make access difficult by the traditional landmark technique. The use of ultrasonography has improved the success of PIV placement in this setting.

Ondansetron compared with doxylamine and pyridoxine for treatment of nausea in pregnancy: a randomized controlled trial.

Objective: To evaluate whether ondansetron or the combination of doxylamine and pyridoxine was superior for the treatment of nausea and vomiting of pregnancy.

Methods: This was a double-blind, randomized, controlled trial in which women with nausea and vomiting of pregnancy were assigned to 4 mg of ondansetron plus a placebo tablet or 25 mg pyridoxine plus 12.5 mg of doxylamine for 5 days.

Bedside emergency ultrasound in a case of acute parotid duct sialolithiasis.

Background: Sialolithiasis with salivary gland obstruction can mimic more frequently occurring illnesses such as facial and dental infection and abscess. It is often difficult to discern the etiology of facial pain and swelling on physical examination alone, requiring advanced imaging in the emergency department.

Case Report: We describe the case of a 37-year-old man who presented with 5 days of worsening unilateral facial pain and swelling.