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Colorimetric capnography is a qualitative measurement method that detects the presence of carbon dioxide (CO2, a relatively acidic gas) in a given gaseous environment. From a medical perspective, the method is usually applied by exposing litmus paper/film to an environment containing a patient's airway gases (i.e. placing it into their breathing circuit/airway circuit), where it will then ...
Capnography is the monitoring of the concentration or partial pressure of carbon dioxide (CO 2 ) in the respiratory gases. Its main development has been as a monitoring tool for use during anesthesia and intensive care .
In colorimetric capnography, the indicator is incorporated in an aqueous matrix that provides a pH just above the indicator's colour change. [4] When exposed to carbon dioxide (CO 2), it undergoes a colour change from purple to yellow, because when CO 2 dissolves in the matrix, it forms carbonic acid. [5]
Colorimetric analysis is a method of determining the concentration of a chemical element or chemical compound in a solution with the aid of a color reagent.It is applicable to both organic compounds and inorganic compounds and may be used with or without an enzymatic stage.
Capnography; Certified anesthesia technician; Certified anesthesia technologist; Certified anesthesiologist assistant; Cisatracurium besilate; Coinduction (anesthetics) Colorimetric capnography; Concentration effect; Cormack–Lehane classification system
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Colorimetric assays use reagents that undergo a measurable color change in the presence of the analyte. They are widely used in biochemistry to test for the presence of enzymes, specific compounds, antibodies, hormones and many more analytes. For example, para-Nitrophenylphosphate is converted into a yellow product by alkaline phosphatase enzyme.
When the sensing event results in the formation of a signal that is visible to the naked eye, such sensors are normally referred to as colorimetric. Many examples of colorimetric chemosensors for ions such as fluoride have been developed. [40] A pH indicator can be consider as a colorimetric chemosensors for protons. Such sensors have been ...