A "back to basics" approach to reduce ED medication errors.

Introduction: Medication error is the most frequently reported error in the emergency department. Nationally, 36% of medication errors occur in the administration phase. The purpose of this study is to reduce medication administration errors in the emergency department by reinforcing basic medication administration procedures.

Pulse oximetry using a disposable finger sensor placed on the forehead in hypoxic patients.

Background: Disposable pulse oximetry sensors designed for the finger are sometimes placed on the forehead. Although finger sensors have not been designed to accurately measure arterial oxygen saturation when placed on other body parts, they are used on the forehead when an oximetry waveform cannot be obtained from the finger.

Objectives: The purpose of this prospective observational study was to measure the agreement between disposable transmittal sensors placed on the finger and the same sensors placed on the forehead.

Ranging and velocimetry signal generation in a backscatter-modulated laser diode.

A compact self-aligning laser radar has been constructed for coheren ranging and velocimetry using a laser diode modulated by feedback from light scattered from a diffusing target. The phenomenology of beat-signal generation in the device is discussed from both experimental and theoretical points of view. The ac-coupled modulation waveform is asymmetric (similar to a sawtooth) and different for the two propagation directions of the light leaving the diode.