BACKGROUND To evaluate the efficacy of pulse oximeter as a pulp vitality tester. MATERIALS AND METHODS The sample group consisted of 60 patients of age 15 to 30 years with normal maxillary anterior teeth. Thirty nonvital teeth with complete endodontic fillings were tested as control group. Systemic oxygen saturation values from the patient's fingers served as the control sample for comparison...

The aim of this study was to evaluate the performance of "new-generation" pulse oximeters in extremely low-birth-weight ([ELBW] ≤ 1000 g) infants. In a prospective crossover observational study, the performance of pulse oximeters of 3 brands (Masimo, Nellcor, and Philips) was evaluated by dual SpO2 measurement in ELBW infants. Disposable probes of either equal or different brands were placed ar...

Following the basic research into the photometric characters of oxyhxmoglobin and reduced haemoglobin by Nicolai (1932) and Kramer (1934), Matthes described the first oximeter in 1935. The early oximeters used only visible red light for the recording of oxygen saturation and so were not compensated for variations in hmemoglobin concentration unless indirectly, through plethysmography. Matthes, ...

The purpose of the study was to evaluate the detection of vascular complications earlier than clinical evidence using a noninvasive near-infrared tissue oximeter monitor. Early detection of circulatory compromise allows for earlier re-exploration and better outcomes. The monitoring method studied was the ViOptix T.Ox Tissue Oximeter (ViOptix Inc., Fremont, CA). The device uses an optical tissue...

BACKGROUND The continuous monitoring of splanchnic organ oxygen saturation could make the early detection of inadequate tissue oxygenation feasible, reducing the risk of hypoperfusion, severe ischemia, multiple organ failure, and, ultimately, death. Current methods for assessing splanchnic perfusion have not been widely accepted for use in the clinical care environment. In an attempt to overcom...

Pulse oximetry probes placed peripherally may fail to give accurate values of blood oxygen saturation when the peripheral circulation is poor. Because central blood flow may be preferentially preserved, we investigated the oesophagus as an alternative monitoring site. A reflectance blood oxygen saturation probe was developed and evaluated in 49 patients undergoing cardiothoracic surgery. The oe...

Mobile phones offer huge potential as platforms for clinical decision making in resource-poor and remote areas. We present methods for the development of a human-centered interface for anesthesia monitoring that is targeted to remote operating rooms in developing countries. The Phone Oximeter is compatible with major PC and mobile phone operating systems and is optimized for small phone screens...