Impaired oxygen extraction in metabolic myopathies: Detection and quantification by near-infrared spectroscopy

2007 ◽  
Vol 35 (4) ◽  
pp. 510-520 ◽  
Author(s):  
Bruno Grassi ◽  
Mauro Marzorati ◽  
Francesca Lanfranconi ◽  
Alessandra Ferri ◽  
Miriam Longaretti ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Oxygen Extraction ◽  
Metabolic Myopathies ◽  
Detection And Quantification

Detection and quantification of adulteration in sandalwood oil through near infrared spectroscopy

The Analyst ◽  
2010 ◽  
Vol 135 (10) ◽  
pp. 2676 ◽  
Author(s):  
Saji Kuriakose ◽  
Xavier Thankappan ◽  
Hubert Joe ◽  
Venkateswaran Venkataraman
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Sandalwood Oil ◽  
Detection And Quantification

scholarly journals Determinants of Cerebral Fractional Oxygen Extraction Using Near Infrared Spectroscopy in Preterm Neonates

2000 ◽  
Vol 20 (2) ◽  
pp. 272-279 ◽  
Author(s):  
Stephen P. Wardle ◽  
C. William Yoxall ◽  
A. Michael Weindling
Keyword(s):  
Infrared Spectroscopy ◽  
Oxygen Saturation ◽  
Near Infrared Spectroscopy ◽  
Negative Correlation ◽  
Oxygen Delivery ◽  
Near Infrared ◽  
Oxygen Extraction ◽  
Arterial Oxygen ◽  
Cerebral Oxygen ◽  
Short Period

Cerebral fractional oxygen extraction (FOE) represents the balance between cerebral oxygen delivery and consumption. This study aimed to determine cerebral FOE in preterm infants during hypotension, during moderate anemia, and with changes in the PaCO2. Three groups of neonates were studied: stable control neonates (n = 43), anemic neonates (n = 46), and hypotensive neonates (n = 19). Cerebral FOE was calculated from the arterial oxygen saturation measured by pulse oximetry, and cerebral venous oxygen saturation was measured using near infrared spectroscopy with partial jugular venous occlusion. Mean ± SD cerebral FOE was similar in control (0.292 ± 0.06), anemic (0.310 ± 0.08; P = 0.26), and hypotensive (0.278 ± 0.06; P = 0.41) neonates. After anemic neonates were transfused, mean ± SD cerebral FOE decreased to 0.274 ± 0.05 ( P = 0.02). There was a weak negative correlation with the hemoglobin concentration (n = 89, r = −0.24, P = 0.04) but not with the hemoglobin F fraction (n = 56, r = 0.24, P = 0.09). In the hypotensive neonates, there was no relationship between cerebral FOE and blood pressure (n = 19, r = 0.34, P = 0.15). There was a significant negative correlation between cerebral FOE and PaCO2 within individuals (n = 14, r = −0.63, P = 0.01), but there was no relationship between individuals (n = 14, r = 0, P = 1). Cerebral FOE was not significantly altered in neonates with either mild anemia or hypotension. There were, however, changes in cerebral FOE when physiological changes occurred over a relatively short period; Cerebral FOE decreased after blood transfusion and increased with decreasing PaCO2. As no change in cerebral FOE was seen during hypotension, it was speculated that cerebral oxygen delivery may have been maintained by cerebral blood flow autoregulation.

Near-infrared Spectroscopy In The Evaluation Of O2 Extraction In Patients With Metabolic Myopathies

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S228
Author(s):  
Bruno Grassi ◽  
Clara Mauri ◽  
Mauro Marzorati ◽  
Francesca Lanfranconi ◽  
Alessandra Ferri ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Metabolic Myopathies ◽  
O2 Extraction

scholarly journals Near-infrared spectroscopy for the detection and quantification of bacterial contaminations in pharmaceutical products

2015 ◽  
Vol 492 (1-2) ◽  
pp. 199-206 ◽  
Author(s):  
Cristina Quintelas ◽  
Daniela P. Mesquita ◽  
João A. Lopes ◽  
Eugénio C. Ferreira ◽  
Clara Sousa
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Pharmaceutical Products ◽  
Detection And Quantification

Detection and quantification ofEscherichia coliandPseudomonas aeruginosain cow milk by near-infrared spectroscopy

2015 ◽  
Vol 68 (3) ◽  
pp. 357-365 ◽  
Author(s):  
Fernando Cámara-Martos ◽  
Joao Almeida Lopes ◽  
Rafael Moreno-Rojas ◽  
Fernando Pérez-Rodríguez
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cow Milk ◽  
Detection And Quantification
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