For the study of walking exercise in human subjects, an accurate method for measurement of the cardiac output is needed which can be applied repeatedly and with minimal discomfort to the subject. Continuous recording of dye-dilution curves by means of an ear oximeter has been used previously,"'9'10 for estimating the cardiac output at rest, and requires only venipuncture. However, the accuracy ...

STUDY OBJECTIVES To assess the impact of pulse oximetry (SpO2) on the indications and the number of arterial blood gas (ABG) levels ordered in an adult emergency department (ED). DESIGN A prospective study during a 2-month period in 1993 with a pulse oximeter available and a comparison with the same period in 1992 without the oximeter. SETTING An adult medical ED of a university hospital in...

BACKGROUND This is a cross-sectional observational study to investigate the safety and feasibility of integrating changing body positions and physical activity in a hypoxic challenge test (HCT). The secondary objective was to compare oxygen saturation (Spo2) in two different locations (forehead and finger). METHODS Included were 12 pediatric to young adult patients with congenital heart (N = ...