caa a22 4500 465825680 CHVBK 20180323112148.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02832178 doi (NATIONALLICENCE)springer-10.1007/BF02832178 Detection of venous air embolism in dogs by emission spectrometry [Elektronische Daten] [Garfield Russell, Russell Richard, Michael Snider] Emission spectrometers provide alternative, relatively inexpensive methods for detecting the concentration of respiratory gas nitrogen. Mass spectrometers are accepted as reliable monitors of end-tidal nitrogen for detection of venous air embolisms. We evaluated an inexpensive emission spectrometer for detecting changes in nitrogen levels and compared it with a mass spectrometer for detecting increased endtidal nitrogen levels in dogs with venous air embolisms. During in vitro gas flow studies (helium; oxygen; helium/ oxygen mixtures; or 70% nitrous oxide/30% oxygen with 0, 1, 2, or 3% isoflurane), air boluses (0.01 to 5.0 ml) were injected into a gas flow circuit and outlet nitrogen levels were measured by a Collins 21232 emission spectrometer. Responses were greater after each bolus when helium rather than oxygen was the major diluent gas. During in vivo studies, 5 dogs were anesthetized, ventilated, denitrogenated, and given venous air embolisms (0.1, 0.5, and 1.0 ml. kg-1) during oxygen and then during Heliox (20% oxygen:80% helium) breathing. End-tidal nitrogen increased approximately two-fold after venous air embolisms given during Heliox as compared with oxygen ventilation. In all 0.1-ml. kg-1 venous air embolisms end-tidal nitrogen increased when the emission spectrometer was used, but venous air embolisms less than 1.0 ml. kg-1 were not consistently detected by mass spectrometry. Emission spectrometry can be used to detect increased end-tidal nitrogen levels indicative of venous air embolism and may be a more sensitive detector than mass spectrometry. Its sensitivity and relatively low cost (one-eighth of a magnetic fixed-sector mass spectrometer) make it a great potential monitor for both clinical detection of venous air embolism and air embolism research. Little, Brown and Company, 1990 Complications: embolism nationallicence Embolism: air nationallicence Equipment: nitrogen analyzer, mass spectrometer nationallicence Monitoring: ventilation nationallicence Russell Garfield Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut Richard Russell Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut Snider Michael Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut Journal of Clinical Monitoring Springer Netherlands 6/1(1990-01-01), 18-23 0748-1977 6:1<18 1990 6 10877 https://doi.org/10.1007/BF02832178 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02832178 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Russell Garfield Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut NATIONALLICENCE 700 1- Richard Russell Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut NATIONALLICENCE 700 1- Snider Michael Department of Anesthesia, The Pennsylvania State University, College of Medicine, University Hospital, The Milton S. Hershey Medical Center, PO Box 850, 17033, Hershey, PA aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring Springer Netherlands 6/1(1990-01-01), 18-23 0748-1977 6:1<18 1990 6 10877 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer