Carboxyhemoglobin and Methemoglobin in Asthma
نویسندگان
چکیده
منابع مشابه
Spectrophotometric measurement of carboxyhemoglobin and methemoglobin in blood.
This paper describes separate spectrophotometric procedures for rapidly measuring carboxyhemoglobin (COHb) and methemoglobin (MetHb) in blood. Absorbance measurements are made in the Soret region at a blood dilution near 1000-fold. For COHb estimation, the diluent contains sodium hydrosulfite, providing the two-component system COHb--Hb for absorbance measurements at 420 and 432 nm. The NA2S2O4...
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INTRODUCTION Surgery is supposed to modulate the production of carbon monoxide by the reduction of heme oxygenase activity or transcriptional regulation of inducible heme oxygenase. On the other hand, the inhalation of tobacco smoke can substantially raise the level of carboxyhemoglobin in the blood. Furthermore, methemoglobin is maintained at a constant level. However, excessive production of ...
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Assessment of oxyhemoglobin saturation in patients with sickle cell disease (SCD) is vital for prompt recognition of hypoxemia. The accuracy of pulse oximeter measurements of blood oxygenation in SCD patients is variable, partially due to carboxyhemoglobin (COHb) and methemoglobin (MetHb), which decrease the oxygen content of blood. This study evaluated the accuracy and reliability of a non-inv...
متن کاملThe measurement of carboxyhemoglobin and methemoglobin using a non-invasive pulse CO-oximeter.
The pulse CO-oximeter (Rad-57 Masimo Corporation, Irvine, CA) allows non-invasive and instantaneous measurement of carboxyhemoglobin (COHb) and methemoglobin (MetHb) percentage level using a finger probe. However, the accuracy and reliability of the Rad-57 against the gold standard of venous or arterial blood samples have not been clearly established. Thus, the objective of this trial is to eva...
متن کاملAbsorption spectra of human fetal and adult oxyhemoglobin, de-oxyhemoglobin, carboxyhemoglobin, and methemoglobin.
We determined the millimolar absorptivities of the four clinically relevant derivatives of fetal and adult human hemoglobin in the visible and near-infrared spectral range (450-1000 nm). As expected, spectral absorption curves of similar shape were found, but the small differences between fetal and adult hemoglobin absorptivity were important enough that they should be taken into account in mul...
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ژورنال
عنوان ژورنال: Lung
سال: 2015
ISSN: 0341-2040,1432-1750
DOI: 10.1007/s00408-015-9686-x