Blood Gas and Critical Care Analyte Analysis
نویسنده
چکیده
point of care (POC) in critical care areas such as the emergency department, neonatal and adult medical intensive care units, surgical intensive care units, and the operating room.2 The collection and analysis by portable or standard blood gas machines at or near the point of care minimizes the time needed to obtain and report laboratory values, which facilitates timely evaluation of results and prompt intervention.3 Although the basic principles of operation for blood gas analyzers haven’t changed significantly from earlier units, the components were notably adapted in 2005. At that time, self-contained cartridges were introduced into several analytical systems, paving the way for point-of-care testing and compact units. During this innovative period, additional analytes were incorporated into the testing menus. Today, healthcare facilities have the option of selecting analyzers to meet a variety of clinical needs and testing menus.4 Early blood gas analyzers were high maintenance and temperamental instruments that required operator-generated maintenance, calibration, and quality control. These units only measured the pH, partial pressure of oxygen (pO2), and partial pressure of carbon dioxide (pCO2) and provided calculated or derived values for other parameters. Today, auto-calibration and verification modes provide a more predictable testing atmosphere for the measurement of pH, pO2, pCO2, hemoglobin, electrolytes, and metabolites such as glucose, lactate, and creatinine.5 Of course, calibration and quality control remain paramount in the accurate Acid Amperometry Analyte Anode Base Buffer Cathode CO oximetry Electrochemical cell Electrode Oxidation Partial pressure of oxygen (pO2) Potentiometric Pulse oximetry Reduction
منابع مشابه
Critical care analytes: pre-analytical factors affecting result quality for combined blood gas and electrolyte systems
متن کامل
New in vitro analytical approaches for clinical chemistry measurements in critical care.
The effective management of patients in intensive care units, operating rooms, and emergency rooms requires frequent measurement of a select group of analytes, preferably at or near the patient's bedside. Tests recognized as being essential for such management include blood gases and related variables (pH, pO2, pCO2, HCO3-, hematocrit/hemoglobin, O2 saturation), electrolytes (Na+, K+, Ca2+, Cl-...
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Background: Pulseoximetry is widely used in the critical care setting, currently used to guide therapeutic interventions. Few studies have evaluated the accuracy of SPO2 (puls-eoximetry oxygen saturation) in intensive care unit after cardiac surgery. Our objective was to compare pulseoximetry with arterial oxygen saturation (SaO2) during clinical routine in such patients, and to examine the eff...
متن کاملDoes implementing pulse oximetry in a critical care unit result in substantial arterial blood gas savings?
OBJECTIVES To examine the impact of pulse oximetry on the use of arterial blood gas and other laboratory determinations and to examine predictors of the use of arterial blood gas measurements. DESIGN Before (preoximetry)/after (postoximetry) study. SETTING Thirty-bed multidisciplinary critical care unit. PATIENTS Consecutive admissions of 300 patients (150 before and 150 after oximetry). ...
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تاریخ انتشار 2014