helium has been researched along with sulfur hexafluoride in 110 studies
Timeframe | Studies, this research(%) | All Research% |
---|---|---|
pre-1990 | 45 (40.91) | 18.7374 |
1990's | 38 (34.55) | 18.2507 |
2000's | 18 (16.36) | 29.6817 |
2010's | 9 (8.18) | 24.3611 |
2020's | 0 (0.00) | 2.80 |
Authors | Studies |
---|---|
Abraham, MH; Acree, WE; Ibrahim, A | 1 |
Blundell, G; Hunter, D; Pereira, RP; Pride, NB; Tattersall, SF | 1 |
Ohta, Y; Suzuki, K; Yamabayashi, H; Yamauchi, T; Yamazaki, Y | 1 |
Sponholtz, DK; Thalmann, ED; van Liew, HD | 1 |
Loughnane, RJ; Scrimshire, DA | 1 |
de Vries, WR; Luijendijk, SC; Six, DP | 3 |
Björklund, LJ; Lachmann, B; Larsson, A; Vilstrup, CT; Werner, O | 1 |
Gavriely, N; Grotberg, JB; Shabtai-Musih, Y | 1 |
Gebhart, J; Heilmann, P; Heyder, J; Hillebrecht, A; Meyer, M; Piiper, J; Schulz, H | 1 |
Aukburg, SJ; Baumgardner, JE; Gobran, SR; Neufeld, GR; Scherer, PW; Schreiner, MS; Schwardt, JD | 1 |
González Mangado, N; Paiva, M; Peces-Barba, G; Verbanck, S | 2 |
de Vries, WR; Luijendijk, SC; Zwart, A | 2 |
Luijendijk, SC; van der Kooij, AM | 2 |
Aukburg, SJ; Baumgardner, JE; Gobran, S; Neufeld, GR; Scherer, PW; Schreiner, M | 1 |
Jaeger, MJ | 1 |
Bergø, GW; Tyssebotn, I | 1 |
Lewis, SM; Meyer, M; Mohr, M; Piiper, J; Schulz, H; Schuster, KD | 2 |
Calzia, E; Meyer, M; Piiper, J; Rahmel, A; Schell, JM; Schwalen, A | 1 |
Buess, C; Hahn, G; Meyer, M; Piiper, J; Sipinková, I | 1 |
Aquilina, AT; Grant, BJ; Klocke, RA; Saltzman, AR; Zhang, S | 1 |
Meyer, M; Mohr, M; Piiper, J; Schulz, H; Schuster, KD | 1 |
Bloem, FH; Clemmer, TP; Crapo, RO; Drews, D; East, TD; Pace, NL; Peng, L; van Ark, E; Wortelboer, PJ | 1 |
Berdine, GG; Dale, D; Johnson, JE; Lehr, JL | 2 |
Ginzburg, AS; Lopata, M; Onal, E | 1 |
de Vries, WR; Luijendijk, SC; Schrikker, AC; Zwart, A | 2 |
Aukburg, SJ; Bartkowski, R; Baumgardner, JE; Gobran, S; Neufeld, GR; Scherer, PW | 1 |
Jebria, AB; Simone, AF; Ultman, JS | 1 |
Drazen, JM; Ingenito, E; Lafleur, J; Lombardo, A; Pichurko, B; Solway, J | 1 |
Berdine, GG; Lehr, JL; Strollo, PJ | 1 |
Silbaugh, SA; Stengel, PW | 1 |
Brown, R; Burwen, DR; Ingenito, E; Kamm, RD; Slutsky, AS; Watson, J | 1 |
Buchanan, PR; Harris, EA; Whitlock, RM | 1 |
Davies, EE; Hughes, JM; Jones, HA | 1 |
Paiva, M; Ravez, P; van Muylem, A; Yernault, JC | 1 |
Drechsler Parks, DM; Larsen, RW; Ultman, JS | 1 |
Löllgen, H; Smidt, U; von Nieding, G; Worth, H | 1 |
Christopherson, SK; Hlastala, MP | 1 |
Brasseur, L; Frans, A; Nemery, B; Nullens, W; Veriter, C | 1 |
Kaethner, T; Knopp, TJ; Meyer, M; Rehder, K; Scheid, P | 1 |
Hook, C; Meyer, M; Piiper, J; Rieke, H | 1 |
Ben Jebria, A | 1 |
Kaethner, T; Kohl, J; Scheid, P | 1 |
Drechsler, DM; Ultman, JS | 1 |
Ar, A; Piiper, J; Rahn, H; Visschedijk, AH | 1 |
Ar, A; Piiper, J; Rahn, H; Tazawa, H | 1 |
Tazawa, H | 1 |
Paganelli, C; Rahn, H | 1 |
Berend, N; Christopher, KL; Voelkel, NF | 1 |
Atkins, N; Birch, S; Davis, B; Gibbs, L; Rao, AS; Sackner, MA | 1 |
Cohen, C; Engel, LA; Kelly, S; Paiva, M; Powell, E | 1 |
Chakrabarti, MK; Davies, EE; Hughes, JM; Jones, HA; Sykes, MK | 1 |
Hey, EN; Price, JF | 1 |
Hlastala, MP; Meyer, M; Riepl, G; Scheid, P | 1 |
Magnussen, H; Smidt, U | 1 |
Hunter, D; Pereira, RP; Pride, NB | 1 |
Partridge, MR; Saunders, KB; Watson, AC | 1 |
Drazen, JM; Ingram, RH; O'Cain, CF; Slutsky, AS | 1 |
Arieli, R; Olszowka, AJ; Van Liew, HD | 1 |
Nixon, W; Pack, A | 1 |
Frazer, DG; Weber, KC | 1 |
Klocke, RA; Saltzman, AR; Zhang, S | 1 |
Porter, TR; Xie, F | 1 |
Jaeger, MJ; Lin, MJ | 1 |
Farré, R; Navajas, D; Peslin, R; Rotger, M | 1 |
Paiva, M; Verbanck, S; Weibel, ER | 1 |
Isaev, GG; Segizbaeva, MO | 1 |
Baran, D; Paiva, M; Van Muylem, A; Yernault, JC | 1 |
Elliott, AR; Lauzon, AM; Paiva, M; Prisk, GK; Verbanck, S; West, JB | 1 |
Elliott, AR; Guy, HJ; Paiva, M; Prisk, GK; Verbanck, S; West, JB | 1 |
Elliott, AR; Lauzon, AM; Paiva, M; Prisk, GK; West, JB | 1 |
Eger, EI; Fang, Z; Gong, D; Halsey, MJ; Ionescu, P; Koblin, DD; Laster, MJ; Trudell, JR | 1 |
Liistro, G; Stanescu, D; Veriter, C | 1 |
Dutrieue, B; Elliott, AR; Lauzon, AM; Paiva, M; Prisk, GK; Verbanck, S; West, JB | 1 |
Lamers, RJ; Luijendijk, SC; van der Grinten, CP; Wilschut, FA; Wouters, EF | 1 |
Hesser, CM; Lind, F; Linnarsson, D; Ostlund, A | 1 |
Mangado, NG; Ortega, M; Paiva, M; Peces-Barba, G; Rubio, ML; Sánchez-Cifuentes, MV; Verbanck, S | 1 |
Baran, D; Van Muylem, A | 1 |
Dutrieue, B; Paiva, M; Vanholsbeeck, F; Verbanck, S | 1 |
Koda, E; Soejima, K; Sugiyama, N; Yamaguchi, K | 1 |
Emery, MJ; Grönkvist, MJ; Gustafsson, PM | 1 |
Bergsten, E; Grönkvist, M; Gustafsson, PM | 1 |
Luijendijk, SC; van der Grinten, CP | 1 |
Bergsten, E; Eiken, O; Gronkvist, M; Gustafsson, PM | 1 |
Dane, DM; Hsia, CC; Johnson, RL; Yan, X | 1 |
Gustafsson, PM; Kjellman, B; Ljungberg, HK | 1 |
FRANKEL, J; SCHNEIDERMAN, HA | 1 |
Olfert, IM; Prisk, GK | 1 |
Hsia, CC; Johnson, RL; Yilmaz, C | 1 |
Avisar, D; Clark, JF; Hudson, GB | 1 |
Luther, K; Oum, K; Troe, J | 1 |
Freedman, MA; Rosenbaum, AW; Sibener, SJ | 1 |
Bierkens, MF; Broers, HP; Schaap, JD; Visser, A | 1 |
Goldman, MD; Gustafsson, PM; Robinson, PD | 1 |
Fernández, FM; Navare, AT | 1 |
Aeschbach-Hertig, W; Chen, Z; Kreuzer, A; von Rohden, C | 1 |
Bottcher, J; Duijnisveld, WH; Osenbruck, K; Schwiede, M; Stadler, S | 1 |
Frey, U; Fuchs, O; Gustafsson, P; Latzin, P; Riedel, T; Singer, F; Stern, G; Thamrin, C | 1 |
Gardner, WP; Hammond, G; Lichtner, P | 1 |
Cook, PG; McCallum, JL; Simmons, CT | 1 |
Ayas, NT; Brasher, PM; Dominelli, PB; Foster, GE; Griesdale, DE; Henderson, WR; Molgat-Seon, Y; Sheel, AW; Yacyshyn, A | 1 |
Husemann, K; Joppek, C; Junger, A; Kohlhäufl, M; Latzin, P; Nagel, JH; Port, J; Singer, F; Tao, Z; Tempel, P; Yammine, S | 1 |
Doan, V; Haccuria, A; Malinovschi, A; Michils, A; Van Muylem, A | 1 |
1 review(s) available for helium and sulfur hexafluoride
Article | Year |
---|---|
Inert gas washout: theoretical background and clinical utility in respiratory disease.
Topics: Helium; Humans; Respiration Disorders; Respiratory Function Tests; Sulfur Hexafluoride | 2009 |
4 trial(s) available for helium and sulfur hexafluoride
Article | Year |
---|---|
Multiple-breath washin of helium and sulfur hexafluoride in sustained microgravity.
Topics: Adult; Female; Helium; Humans; Male; Middle Aged; Posture; Respiratory Mechanics; Space Flight; Sulfur Hexafluoride; Weightlessness | 1998 |
Influence of gas density on simulated snoring.
Topics: Adult; Air Pressure; Airway Resistance; Analysis of Variance; Epiglottis; Female; Gases; Helium; Humans; Models, Biological; Oxygen; Reference Values; Respiratory Mechanics; Sensitivity and Specificity; Snoring; Statistics, Nonparametric; Sulfur Hexafluoride; Viscosity | 1999 |
Helium and sulfur hexafluoride bolus washin in short-term microgravity.
Topics: Adult; Algorithms; Female; Helium; Humans; Lung Volume Measurements; Male; Respiratory Mechanics; Sulfur Hexafluoride; Total Lung Capacity; Weightlessness | 1999 |
Effect of 60 degrees head-down tilt on peripheral gas mixing in the human lung.
Topics: Adaptation, Physiological; Adult; Head-Down Tilt; Helium; Humans; Male; Middle Aged; Pulmonary Gas Exchange; Pulmonary Ventilation; Respiration; Sulfur Hexafluoride; Weightlessness | 2004 |
105 other study(ies) available for helium and sulfur hexafluoride
Article | Year |
---|---|
Air to lung partition coefficients for volatile organic compounds and blood to lung partition coefficients for volatile organic compounds and drugs.
Topics: Air; Animals; Humans; Lung; Organic Chemicals; Probability; Rats; Tissue Distribution; Volatilization | 2008 |
Lung distensibility and airway function in intermediate alpha 1-antitrypsin deficiency (Pi MZ).
Topics: Adult; alpha 1-Antitrypsin Deficiency; Helium; Heterozygote; Humans; London; Lung; Male; Middle Aged; Phenotype; Pulmonary Emphysema; Respiratory Function Tests; Smoking; Sulfur Hexafluoride | 1979 |
[Roles of convection and diffusion in the airways in pulmonary N2 washout by He-O2 and by SF6-O2 (author's transl)].
Topics: Adult; Animals; Dogs; Female; Helium; Humans; Male; Nitrogen; Oxygen; Pulmonary Diffusing Capacity; Pulmonary Ventilation; Sulfur Hexafluoride; Surface-Active Agents | 1979 |
Diffusion-dependence of pulmonary gas mixing at 5.5 and 9.5 ATA.
Topics: Argon; Diffusion; Helium; Humans; Male; Mathematics; Neon; Pressure; Pulmonary Diffusing Capacity; Sulfur Hexafluoride; Time Factors | 1979 |
Theoretical analysis of the effects of diffusivity on pulmonary gas transport and mixing.
Topics: Diffusion; Helium; Lung; Models, Biological; Neon; Nitrogen; Oxygen; Pulmonary Alveoli; Respiration; Solubility; Sulfur Hexafluoride | 1979 |
Collateral ventilation and the sloping alveolar plateaus of He and SF6: a model study.
Topics: Airway Obstruction; Animals; Dogs; Helium; Humans; Lung; Mathematics; Models, Biological; Pulmonary Alveoli; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1992 |
Functional residual capacity and ventilation homogeneity in mechanically ventilated small neonates.
Topics: Body Weight; Functional Residual Capacity; Gestational Age; Helium; Humans; Infant, Newborn; Models, Biological; Positive-Pressure Respiration; Respiration; Respiration, Artificial; Respiratory Distress Syndrome, Newborn; Sulfur Hexafluoride | 1992 |
Spectral content of forced expiratory wheezes during air, He, and SF6 breathing in normal humans.
Topics: Acoustics; Adult; Air; Algorithms; Helium; Humans; Male; Respiratory Mechanics; Respiratory Sounds; Software Design; Sulfur Hexafluoride; Vital Capacity | 1992 |
Convective and diffusive gas transport in canine intrapulmonary airways.
Topics: Animals; Biological Transport, Active; Dogs; Helium; Lung Volume Measurements; Pulmonary Diffusing Capacity; Pulmonary Gas Exchange; Respiration, Artificial; Respiratory Dead Space; Sulfur Hexafluoride | 1992 |
Modelling steady state pulmonary elimination of He, SF6 and CO2: effect of morphometry.
Topics: Carbon Dioxide; Computer Simulation; Helium; Humans; Lung; Models, Biological; Respiration; Sulfur Hexafluoride; Tidal Volume | 1992 |
Multiple-breath washout experiments in rat lungs.
Topics: Animals; Breath Tests; Functional Residual Capacity; Helium; Humans; Lung Volume Measurements; Male; Nitrogen; Rats; Rats, Inbred Strains; Respiratory Mechanics; Sulfur Hexafluoride; Tidal Volume | 1991 |
Single-breath washout experiments in rat lungs.
Topics: Animals; Breath Tests; Diffusion; Forced Expiratory Flow Rates; Functional Residual Capacity; Helium; Lung Volume Measurements; Male; Nitrogen; Pulmonary Alveoli; Rats; Rats, Inbred Strains; Reference Standards; Respiratory Mechanics; Sulfur Hexafluoride; Trachea | 1991 |
Collateral ventilation by diffusion across the alveolar walls and the exchange of inert gases in the lung.
Topics: Computer Simulation; Helium; Humans; Lung Diseases, Obstructive; Models, Biological; Pulmonary Alveoli; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1991 |
Longitudinal dispersion in model of central airways during high-frequency ventilation.
Topics: Acetylene; Diffusion; Helium; High-Frequency Ventilation; Humans; Mathematics; Models, Anatomic; Pulmonary Gas Exchange; Pulmonary Ventilation; Sulfur Hexafluoride | 1991 |
Diffusivity, respiratory rate and tidal volume influence inert gas expirograms.
Topics: Adult; Diffusion; Helium; Humans; Kinetics; Lung Volume Measurements; Male; Middle Aged; Pulmonary Gas Exchange; Pulmonary Ventilation; Regression Analysis; Respiration; Respiratory Dead Space; Solubility; Sulfur Hexafluoride; Tidal Volume | 1991 |
Alveolar sacs and the expirograms of He and SF6: a model study.
Topics: Helium; Models, Biological; Pulmonary Alveoli; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1991 |
High-frequency ventilation in dogs with three gases of different densities.
Topics: Animals; Carbon Dioxide; Dogs; Gases; Helium; High-Frequency Ventilation; Models, Biological; Nitrogen; Oxygen; Pulmonary Diffusing Capacity; Pulmonary Gas Exchange; Sulfur Hexafluoride; Tidal Volume; Viscosity | 1991 |
Respiratory frequency and distribution of cardiac output in rats breathing gas with different densities.
Topics: Animals; Blood Pressure; Cardiac Output; Cerebrovascular Circulation; Chemical Phenomena; Chemistry, Physical; Coronary Circulation; Eye; Heart Rate; Helium; Male; Microspheres; Oxygen; Rats; Rats, Inbred Strains; Regional Blood Flow; Respiration; Sulfur Hexafluoride | 1991 |
Sloping alveolar plateaus of He and SF6 measured in excised cat lungs ventilated at constant volume by pressure changes.
Topics: Animals; Cats; Helium; In Vitro Techniques; Lung; Pulmonary Alveoli; Respiration; Sulfur Hexafluoride; Total Lung Capacity; Ventilators, Mechanical | 1991 |
Cardiogenic oscillations of He and SF6 in expired gas in dogs.
Topics: Animals; Diffusion; Dogs; Heart; Heart Rate; Helium; Models, Biological; Myocardial Contraction; Periodicity; Pulmonary Gas Exchange; Respiratory Mechanics; Sulfur Hexafluoride | 1990 |
Significance of cardiogenic mixing in dog lungs.
Topics: Animals; Dogs; Heart; Heart Arrest, Induced; Heart Rate; Helium; Myocardial Contraction; Periodicity; Pulmonary Alveoli; Pulmonary Gas Exchange; Respiratory Dead Space; Respiratory Mechanics; Sulfur Hexafluoride | 1990 |
Cardiogenic oscillations in He and SF6 expirograms during airway and venous loading.
Topics: Administration, Inhalation; Animals; Blood Gas Analysis; Carbon Dioxide; Dogs; Heart; Helium; Intubation, Intratracheal; Models, Biological; Oxygenators, Membrane; Pressure; Pulmonary Alveoli; Pulmonary Gas Exchange; Respiration; Respiration, Artificial; Respiratory Function Tests; Sulfur Hexafluoride | 1990 |
Multiple breath washout of He and SF6 in panting dogs.
Topics: Animals; Dogs; Female; Helium; High-Frequency Ventilation; Male; Noble Gases; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1990 |
Role of molecular diffusion in conventional and high frequency ventilation.
Topics: Animals; Butanes; Diffusion; Dogs; Ethane; Helium; High-Frequency Jet Ventilation; Hydrogen; Methane; Propane; Pulmonary Diffusing Capacity; Respiration, Artificial; Sulfur Hexafluoride | 1990 |
Alveolar slope and dead space of He and SF6 in dogs: comparison of airway and venous loading.
Topics: Administration, Inhalation; Animals; Blood Gas Analysis; Dogs; Helium; Oxygenators, Membrane; Pulmonary Alveoli; Pulmonary Gas Exchange; Respiration; Respiration, Artificial; Respiratory Dead Space; Sulfur Hexafluoride | 1990 |
Automated sulfur hexafluoride washout functional residual capacity measurement system for any mode of mechanical ventilation as well as spontaneous respiration.
Topics: Adult; Female; Fluorides; Functional Residual Capacity; Helium; Humans; Lung Diseases, Obstructive; Lung Volume Measurements; Male; Middle Aged; Plethysmography, Whole Body; Respiration, Artificial; Respiratory Distress Syndrome; Sulfur Hexafluoride | 1990 |
Diffusivity dependence of multiple-breath washouts of lung periphery.
Topics: Animals; Dogs; Fluorides; Helium; In Vitro Techniques; Models, Biological; Pulmonary Diffusing Capacity; Sulfur Hexafluoride | 1990 |
Inspiratory flow rate and dead space in dogs.
Topics: Animals; Biological Transport, Active; Dogs; Helium; Models, Biological; Pulmonary Gas Exchange; Respiratory Dead Space; Respiratory Mechanics; Sulfur Hexafluoride | 1990 |
Effects of loading and unloading the respiratory system on respiratory control and muscle function.
Topics: Adult; Carbon Dioxide; Electromyography; Expiratory Reserve Volume; Helium; Humans; Inspiratory Reserve Volume; Male; Oxygen; Pulmonary Ventilation; Respiratory Muscles; Sulfur Hexafluoride | 1989 |
The sloping alveolar plateau of tracer gases washed out from mixed venous blood in man.
Topics: Acetylene; Adult; Chlorofluorocarbons, Methane; Helium; Humans; Male; Middle Aged; Models, Biological; Partial Pressure; Pulmonary Circulation; Pulmonary Gas Exchange; Respiratory Function Tests; Sulfur Hexafluoride | 1989 |
Diffusion-limited gas mixing in the lung and its consequences for transpulmonary gas transport.
Topics: Adult; Exercise; Helium; Humans; Lung Volume Measurements; Male; Middle Aged; Models, Biological; Partial Pressure; Pulmonary Gas Exchange; Respiratory Function Tests; Sulfur Hexafluoride | 1989 |
Numerical and experimental study of steady-state CO2 and inert gas washout.
Topics: Carbon Dioxide; Computer Simulation; Fluorides; Functional Residual Capacity; Helium; Humans; Lung; Mathematics; Models, Biological; Respiration; Sulfur Hexafluoride; Tidal Volume | 1988 |
Bronchial distribution of gas mixing in a model of the upper and central airways.
Topics: Bronchi; Diffusion; Helium; Humans; Larynx; Mathematics; Models, Biological; Oxygen; Pulmonary Gas Exchange; Sulfur Hexafluoride; Trachea | 1988 |
Dissociation of temperature-gradient and evaporative heat loss during cold gas hyperventilation in cold-induced asthma.
Topics: Adult; Asthma; Asthma, Exercise-Induced; Biophysical Phenomena; Biophysics; Body Temperature Regulation; Bronchi; Cold Temperature; Constriction, Pathologic; Female; Helium; Humans; Hyperventilation; Male; Middle Aged; Oxygen; Respiratory Function Tests; Sulfur Hexafluoride; Temperature | 1988 |
Multiple gas washout during jet ventilation.
Topics: Animals; Diffusion; Helium; High-Frequency Jet Ventilation; Models, Biological; Nitrogen; Papio; Pulmonary Gas Exchange; Sulfur Hexafluoride; Tidal Volume | 1988 |
Mechanisms of gas loss from normal and hyperinflated excised guinea pig lungs.
Topics: Airway Resistance; Animals; Guinea Pigs; Helium; Histamine; Ligation; Lung; Lung Volume Measurements; Male; Methacholine Chloride; Methacholine Compounds; Ovalbumin; Oxygen; Pulmonary Ventilation; Respiratory Physiological Phenomena; Sulfur Hexafluoride; Time Factors; Trachea | 1986 |
Gas exchange during constant flow ventilation with different gases.
Topics: Animals; Dogs; Female; Helium; Male; Mathematics; Oxygen; Pulmonary Gas Exchange; Pulmonary Ventilation; Respiration, Artificial; Sulfur Hexafluoride | 1987 |
Human alveolar gas-mixing efficiency for gases of differing diffusivity in health and airflow limitation.
Topics: Adult; Asthma; Bronchial Provocation Tests; Female; Functional Residual Capacity; Helium; Humans; Lung Diseases, Obstructive; Male; Plethysmography; Pulmonary Alveoli; Pulmonary Ventilation; Reference Values; Respiratory Dead Space; Sulfur Hexafluoride; Tidal Volume | 1987 |
Modification of pulmonary gas mixing by postural changes.
Topics: Adult; Female; Functional Residual Capacity; Helium; Humans; Male; Posture; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1986 |
Preinspiratory lung volume dependence of the slope of the alveolar plateau.
Topics: Adult; Helium; Humans; Lung; Lung Volume Measurements; Pulmonary Alveoli; Respiration; Statistics as Topic; Sulfur Hexafluoride | 1986 |
Longitudinal dispersion of gases measured in a model of the bronchial airways.
Topics: Acetylene; Bronchi; Butanes; Chemical Phenomena; Chemistry, Physical; Chlorofluorocarbons; Chlorofluorocarbons, Methane; Helium; Methane; Models, Biological; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1985 |
Inert gas mixing in the upper and central airways of man.
Topics: Adult; Bronchi; Diffusion; Glottis; Helium; Humans; Male; Models, Biological; Pulmonary Ventilation; Respiratory Dead Space; Respiratory Physiological Phenomena; Sulfur Hexafluoride; Trachea | 1985 |
Intrapulmonary gas mixing in man during infusion of isoproterenol studied by simultaneous wash-out of He and SF6.
Topics: Adult; Heart Rate; Helium; Humans; Isoproterenol; Male; Noble Gases; Pulmonary Diffusing Capacity; Respiratory Dead Space; Sulfur Hexafluoride | 1980 |
Pulmonary gas exchange during altered density gas breathing.
Topics: Acetone; Animals; Cyclopropanes; Dogs; Ethane; Ether; Halothane; Helium; Lung; Noble Gases; Oxygen; Pulmonary Alveoli; Respiration; Sulfur Hexafluoride | 1982 |
Effects of gas density on pulmonary gas exchange of normal man at rest and during exercise.
Topics: Adult; Carbon Dioxide; Helium; Humans; Male; Middle Aged; Nitrogen; Oxygen; Physical Exertion; Pulmonary Gas Exchange; Respiration; Sulfur Hexafluoride | 1983 |
Gas mixing in the airways of dog lungs during high-frequency ventilation.
Topics: Animals; Argon; Diffusion; Dogs; Fluorides; Helium; Lung; Respiration; Sulfur Hexafluoride; Time Factors | 1983 |
Gas mixing in dog lungs studied by single-breath washout of He and SF6.
Topics: Animals; Dogs; Fluorides; Helium; Lung; Methods; Pulmonary Alveoli; Respiration; Respiratory Dead Space; Respiratory Function Tests; Sulfur Hexafluoride | 1983 |
Convective gas mixing in the airways of the human lung--comparison of laminar and turbulent dispersion.
Topics: Helium; Humans; Lung; Models, Biological; Pulmonary Gas Exchange; Sulfur Hexafluoride | 1984 |
Gas concentration profiles along airways of dog lungs during high-frequency ventilation.
Topics: Animals; Diffusion; Dogs; Helium; Lung; Pulmonary Alveoli; Pulmonary Gas Exchange; Respiration, Artificial; Respiratory Dead Space; Sulfur Hexafluoride | 1984 |
Cardiogenic mixing in the pulmonary conducting airways of man?
Topics: Adult; Female; Heart; Helium; Humans; Male; Methods; Physical Exertion; Physiology; Pulmonary Ventilation; Respiratory Physiological Phenomena; Rest; Sulfur Hexafluoride; Tidal Volume | 1984 |
Carbon dioxide in the chick embryo towards end of development: effects of He and SF6 in breathing mixture.
Topics: Animals; Carbon Dioxide; Chick Embryo; Diffusion; Helium; Partial Pressure; Sulfur Hexafluoride | 1980 |
Changes in acid-base balance of chick embryos exposed to a He or SF6 atmosphere.
Topics: Acid-Base Equilibrium; Acid-Base Imbalance; Animals; Atmosphere; Carbon Dioxide; Chick Embryo; Fluorides; Helium; Hydrogen-Ion Concentration; Kinetics; Partial Pressure; Sulfur Hexafluoride | 1981 |
Effect of O2 and CO2 in N2, He, and SF6 on chick embryo blood pressure and heart rate.
Topics: Animals; Atmosphere; Blood Pressure; Carbon Dioxide; Chick Embryo; Heart Rate; Helium; Nitrogen; Oxygen; Sulfur Hexafluoride; Time Factors | 1981 |
Role of diffusion in gas exchange of the avian egg.
Topics: Animals; Atmospheric Pressure; Carbon Dioxide; Diffusion; Egg Shell; Helium; Kinetics; Lung; Nitrogen; Sulfur Hexafluoride | 1982 |
Breathing He-O2 shifts the lung pressure-volume curve of the dog.
Topics: Animals; Dogs; Helium; Indomethacin; Meclofenamic Acid; Neon; Oxygen; Pressure; Respiration; Respiratory Function Tests; Sulfur Hexafluoride | 1983 |
Assessment of density dependent flow-volume parameters in nonsmokers and smokers. Measurement with spirometry, body plethysmography and respiratory inductive plethysmography.
Topics: Adolescent; Adult; Air; Female; Forced Expiratory Flow Rates; Helium; Humans; Lung Diseases; Male; Oxygen; Plethysmography; Plethysmography, Whole Body; Smoking; Sulfur Hexafluoride; Vital Capacity | 1982 |
Gas mixing in the lungs of dogs and pigs.
Topics: Animals; Diffusion; Dogs; Gases; Helium; Respiration; Respiratory Function Tests; Sulfur Hexafluoride; Swine | 1982 |
The contribution of heart beat to gas mixing in the lungs of dogs.
Topics: Animals; Dogs; Fluorides; Heart; Helium; Lung; Sulfur Hexafluoride | 1982 |
Nasal conductance and effective airway diameter.
Topics: Airway Resistance; Asthma; Child; Female; Helium; Humans; Male; Manometry; Nasal Cavity; Pulmonary Ventilation; Rhinitis, Allergic, Seasonal; Sulfur Hexafluoride | 1982 |
Solubility of helium, argon, and sulfur hexafluoride in human blood measured by mass spectrometry.
Topics: Argon; Fluorides; Helium; Humans; Mass Spectrometry; Solubility; Sulfur Hexafluoride | 1980 |
Intrapulmonary gas transport of He and SF6 in healthy subjects and patients with chronic obstructive lung disease.
Topics: Acetylcholine; Adult; Aged; Bronchi; Constriction; Fluorides; Helium; Humans; Lung; Lung Diseases, Obstructive; Male; Middle Aged; Respiratory Function Tests; Sulfur Hexafluoride | 1981 |
Use of lung pressure-volume curves and helium-sulphur hexafluoride washout to detect emphysema in subjects with mild airflow obstruction.
Topics: Asthma; Breath Tests; Diagnosis, Differential; Helium; Humans; Lung Volume Measurements; Male; Pulmonary Emphysema; Pulmonary Ventilation; Sulfur Hexafluoride | 1981 |
Moment analysis of the flow-time curve after breathing gases of different densities.
Topics: Adult; Asthma; Female; Forced Expiratory Flow Rates; Helium; Humans; Lung; Male; Oxygen; Sulfur Hexafluoride | 1981 |
Alveolar pressure-airflow characteristics in humans breathing air, He-O2, and SF6-O2.
Topics: Adult; Air; Airway Resistance; Fluorides; Helium; Humans; Male; Oxygen; Pressure; Pulmonary Alveoli; Pulmonary Ventilation; Respiration; Sulfur Hexafluoride | 1981 |
Postinspiratory mixing in the lung and cardiogenic oscillations.
Topics: Adult; Closing Volume; Functional Residual Capacity; Gases; Heart; Helium; Humans; Lung; Male; Middle Aged; Oscillometry; Residual Volume; Respiration; Sulfur Hexafluoride; Total Lung Capacity | 1981 |
Helium and sulfur hexafluoride washout in asymmetric lung models.
Topics: Fluorides; Helium; Lung; Models, Structural; Respiration; Sulfur Hexafluoride; Tidal Volume | 1981 |
Effect of altered gas diffusivity on alveolar gas exchange-a theoretical study.
Topics: Biological Transport; Carbon Dioxide; Carbon Monoxide; Diffusion; Helium; Humans; Mathematics; Models, Biological; Nitrogen; Oxygen; Pulmonary Alveoli; Respiration; Sulfur Hexafluoride; Ventilation-Perfusion Ratio | 1980 |
The effects of several gases (He, N2, N2O, and SF6) on gas trapping in excised lungs.
Topics: Animals; Diffusion; Gases; Helium; Lung; Male; Nitrogen; Nitrogen Oxides; Plethysmography; Rats; Solubility; Sulfur Hexafluoride | 1980 |
Influence of cardiac action on gas mixing in closed-chest dogs.
Topics: Animals; Denervation; Dogs; Gases; Heart; Heart Arrest, Induced; Helium; Lung; Oscillometry; Respiration; Respiratory Dead Space; Sulfur Hexafluoride; Vagus Nerve | 1995 |
Visually discernible myocardial echocardiographic contrast after intravenous injection of sonicated dextrose albumin microbubbles containing high molecular weight, less soluble gases.
Topics: Albumins; Animals; Contrast Media; Dogs; Echocardiography; Glucose; Heart Ventricles; Helium; Molecular Weight; Nitrogen; Reproducibility of Results; Sonication; Sulfur Hexafluoride | 1995 |
CO2 binding by Baralyme in three different carrier gases.
Topics: Barium Compounds; Calcium Hydroxide; Carbon Dioxide; Helium; Models, Chemical; Models, Theoretical; Nitrogen; Potassium Compounds; Sulfur Hexafluoride; Time Factors | 1994 |
Respiratory input impedance up to 256 Hz in healthy humans breathing foreign gases.
Topics: Adult; Airway Resistance; Female; Gases; Helium; Humans; Male; Models, Biological; Plethysmography, Whole Body; Respiratory Mechanics; Sulfur Hexafluoride | 1993 |
Simulations of washout experiments in postmortem rat lungs.
Topics: Animals; Diffusion; Functional Residual Capacity; Helium; Humans; Lung; Models, Biological; Pulmonary Alveoli; Rats; Respiratory Dead Space; Respiratory Mechanics; Sulfur Hexafluoride | 1993 |
[Mechanisms for compensating for changed respiration resistances during muscular work in man].
Topics: Adult; Airway Resistance; Breath Tests; Helium; Humans; Male; Oxygen; Physical Exertion; Reference Values; Respiration; Sulfur Hexafluoride | 1995 |
Structural change of the acinus during growth assessed by single-breath tracer gas washouts.
Topics: Adolescent; Adult; Age Factors; Aging; Child; Female; Helium; Humans; Lung; Male; Middle Aged; Pulmonary Ventilation; Sex Factors; Sulfur Hexafluoride; Vital Capacity | 1996 |
Paradoxical helium and sulfur hexafluoride single-breath washouts in short-term vs. sustained microgravity.
Topics: Adult; Female; Helium; Humans; Male; Middle Aged; Respiration; Sulfur Hexafluoride; Time Factors; Weightlessness | 1997 |
Cardiogenic oscillation phase relationships during single-breath tests performed in microgravity.
Topics: Adult; Argon; Carbon Dioxide; Heart; Helium; Humans; Middle Aged; Nitrogen; Pulmonary Ventilation; Respiration; Respiratory Function Tests; Space Flight; Sulfur Hexafluoride; Ventilation-Perfusion Ratio; Vital Capacity; Weightlessness | 1998 |
Minimum alveolar concentrations of noble gases, nitrogen, and sulfur hexafluoride in rats: helium and neon as nonimmobilizers (nonanesthetics)
Topics: Anesthetics; Anesthetics, Inhalation; Animals; Argon; Desflurane; Helium; Isoflurane; Krypton; Male; Neon; Nitrogen; Noble Gases; Partial Pressure; Pulmonary Alveoli; Rats; Rats, Sprague-Dawley; Sulfur Hexafluoride; Xenon | 1998 |
Intrapulmonary gas mixing and the sloping alveolar plateau in COPD patients with macroscopic emphysema.
Topics: Adult; Aged; Atmospheric Pressure; Carbon Dioxide; Forced Expiratory Volume; Helium; Humans; Lung Diseases, Obstructive; Male; Mass Spectrometry; Middle Aged; Pulmonary Alveoli; Pulmonary Diffusing Capacity; Pulmonary Emphysema; Sulfur Hexafluoride; Tidal Volume; Tomography, X-Ray Computed | 1999 |
Hyperbaric bradycardia and hypoventilation in exercising men: effects of ambient pressure and breathing gas.
Topics: Adult; Atmospheric Pressure; Bradycardia; Drug Combinations; Exercise; Gases; Heart Rate; Helium; Humans; Hydrostatic Pressure; Hypoventilation; Male; Nitrogen; Oxygen; Respiration; Sulfur Hexafluoride | 1999 |
Lung function and ventilation inhomogeneity in rat lungs after allergen challenge.
Topics: Allergens; Animals; Helium; Immunization; Lung; Lung Compliance; Male; Nitrogen; Ovalbumin; Pressure; Pulmonary Ventilation; Rats; Rats, Inbred BN; Sulfur Hexafluoride | 2000 |
Overall and peripheral inhomogeneity of ventilation in patients with stable cystic fibrosis.
Topics: Adolescent; Adult; Aged; Breath Tests; Child; Cystic Fibrosis; Female; Forced Expiratory Volume; Functional Residual Capacity; Helium; Humans; Male; Middle Aged; Oxygen; Prognosis; Respiration; Respiratory Insufficiency; Sulfur Hexafluoride | 2000 |
A human acinar structure for simulation of realistic alveolar plateau slopes.
Topics: Bronchi; Computer Simulation; Diffusion; Helium; Humans; Models, Biological; Nitrogen; Pulmonary Alveoli; Pulmonary Gas Exchange; Sulfur Hexafluoride | 2000 |
Inhaling gas with different CT densities allows detection of abnormalities in the lung periphery of patients with smoking-induced COPD.
Topics: Administration, Inhalation; Adult; Aged; Helium; Humans; Lung; Lung Volume Measurements; Male; Middle Aged; Oxygen Inhalation Therapy; Pulmonary Disease, Chronic Obstructive; Pulmonary Ventilation; Radiographic Image Enhancement; Reference Values; Sensitivity and Specificity; Smoking; Sulfur Hexafluoride; Tomography, X-Ray Computed | 2001 |
Mechanisms of ventilation inhomogeneity during vital capacity breaths standing and supine.
Topics: Adult; Helium; Humans; Male; Middle Aged; Posture; Respiration; Respiratory Mechanics; Sulfur Hexafluoride; Supine Position; Vital Capacity | 2002 |
Effects of body posture and tidal volume on inter- and intraregional ventilation distribution in healthy men.
Topics: Adolescent; Adult; Functional Residual Capacity; Helium; Humans; Male; Middle Aged; Posture; Pulmonary Ventilation; Respiration; Respiratory Physiological Phenomena; Sulfur Hexafluoride; Tidal Volume | 2002 |
The ratio of the alveolar ventilations of SF6 and He in patients with lung emphysema and in healthy subjects.
Topics: Adolescent; Adult; Aged; Helium; Humans; Linear Models; Middle Aged; Pulmonary Alveoli; Pulmonary Emphysema; Pulmonary Gas Exchange; Pulmonary Ventilation; Respiratory Function Tests; Sulfur Hexafluoride | 2002 |
Inter- and intraregional ventilation inhomogeneity in hypergravity and after pressurization of an anti-G suit.
Topics: Adult; Functional Residual Capacity; Gravity Suits; Helium; Humans; Hypergravity; Male; Pressure; Respiration; Respiratory Mechanics; Sulfur Hexafluoride | 2003 |
Density-dependent reduction of nitric oxide diffusing capacity after pneumonectomy.
Topics: Aging; Animals; Body Weight; Carbon Monoxide; Dogs; Helium; Hemoglobins; Lung; Lung Volume Measurements; Male; Nitric Oxide; Pneumonectomy; Pulmonary Diffusing Capacity; Sulfur Hexafluoride; Tidal Volume | 2003 |
Peripheral airway involvement in asthma assessed by single-breath SF6 and He washout.
Topics: Adrenergic beta-Agonists; Adult; Airway Obstruction; Asthma; Breath Tests; Bronchi; Bronchial Provocation Tests; Cold Temperature; Female; Forced Expiratory Volume; Helium; Humans; Hyperventilation; Male; Respiratory System; Severity of Illness Index; Sulfur Hexafluoride | 2003 |
The effects of nitrogen, helium, argon and sulfur hexafluoride on the development of insects.
Topics: Animals; Argon; Gases; Helium; Insecta; Nitrogen; Sulfur; Sulfur Hexafluoride | 1958 |
A rebreathing method for measuring lung volume, diffusing capacity and cardiac output in conscious small animals.
Topics: Animals; Blood Volume; Capillaries; Cardiac Output; Guinea Pigs; Helium; Lung Volume Measurements; Male; Methane; Pulmonary Alveoli; Pulmonary Circulation; Pulmonary Diffusing Capacity; Pulmonary Gas Exchange; Respiration; Sulfur Hexafluoride; Time Factors; Wakefulness; Weights and Measures | 2005 |
Gas transport below artificial recharge ponds: insights from dissolved noble gases and a dual gas (SF6 and 3He) tracer experiment.
Topics: Environmental Monitoring; Helium; Isotope Labeling; Noble Gases; Sulfur Hexafluoride; Time Factors; Water Movements; Water Supply | 2005 |
The role of the radical-complex mechanism in the ozone recombination/dissociation reaction.
Topics: Argon; Carbon Dioxide; Free Radicals; Helium; Kinetics; Molecular Structure; Nitrogen; Oxygen Isotopes; Ozone; Sulfur Hexafluoride; Temperature | 2005 |
Vibrational properties of disordered mono- and bilayers of physisorbed sulfur hexafluoride on Au(111).
Topics: Adsorption; Gold; Helium; Models, Chemical; Sulfur Hexafluoride; Surface Properties; Vibration | 2006 |
Degassing of 3H/3He, CFCs and SF6 by denitrification: measurements and two-phase transport simulations.
Topics: Calibration; Chlorofluorocarbons; Computer Simulation; Gases; Helium; Models, Chemical; Nitrogen; Pressure; Soil; Sulfur Hexafluoride; Tritium; Water | 2009 |
Inline pneumatically assisted atmospheric pressure matrix-assisted laser desorption/ionization ion trap mass spectrometry.
Topics: Angiotensin I; Atmospheric Pressure; Equipment Design; Helium; Nitrogen; Peptides; Pharmaceutical Preparations; Quinidine; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Sulfur Hexafluoride; Temperature | 2010 |
Accumulation of natural SF6 in the sedimentary aquifers of the North China Plain as a restriction on groundwater dating.
Topics: China; Environmental Monitoring; Geologic Sediments; Helium; Isotopes; Rivers; Sulfur Hexafluoride; Time Factors; Tritium; Water Pollutants, Chemical; Water Supply | 2010 |
Linking chloride mass balance infiltration rates with chlorofluorocarbon and SF6 groundwater dating in semi-arid settings: potential and limitations.
Topics: Botswana; Chlorides; Chlorofluorocarbons; Environmental Monitoring; Geography; Helium; Isotopes; Soil Pollutants; Sulfur Hexafluoride; Tritium; Water Movements; Water Pollutants, Chemical; Water Supply | 2010 |
Tidal volume single breath washout of two tracer gases--a practical and promising lung function test.
Topics: Adult; Area Under Curve; Breath Tests; Female; Flowmeters; Gases; Helium; Humans; Male; Reproducibility of Results; Respiration; Sulfur Hexafluoride; Tidal Volume; Ultrasonics | 2011 |
High performance simulation of environmental tracers in heterogeneous domains.
Topics: Argon; Chlorofluorocarbons; Computer Simulation; Environmental Monitoring; Groundwater; Helium; Hydrogen; Radioisotopes; Sulfur Hexafluoride; Water Movements | 2015 |
Limitations of the use of environmental tracers to infer groundwater age.
Topics: Argon; Carbon Radioisotopes; Chlorofluorocarbons; Environmental Monitoring; Groundwater; Helium; Hydrogen; Models, Theoretical; Radioisotopes; Sulfur Hexafluoride; Tritium; Water Movements | 2015 |
Gas density alters expiratory time constants before and after experimental lung injury.
Topics: Acrylic Resins; Acute Lung Injury; Administration, Inhalation; Animals; Disease Models, Animal; Exhalation; Female; Gases; Helium; Lung; Models, Biological; Nitrogen; Respiration, Artificial; Specific Gravity; Sulfur Hexafluoride; Sus scrofa; Time Factors | 2015 |
A simple method to reconstruct the molar mass signal of respiratory gas to assess small airways with a double-tracer gas single-breath washout.
Topics: Adult; Airway Obstruction; Child; Helium; Humans; Lung; Pulmonary Disease, Chronic Obstructive; Pulmonary Ventilation; Reproducibility of Results; Respiration; Sulfur Hexafluoride; Tidal Volume | 2017 |
Small airways dysfunction: the link between allergic rhinitis and allergic asthma.
Topics: Adult; Asthma; Breath Tests; Case-Control Studies; Female; Forced Expiratory Volume; Helium; Humans; Hypersensitivity; Lung; Male; Middle Aged; Nitric Oxide; Prospective Studies; Rhinitis, Allergic; Spirometry; Sputum; Sulfur Hexafluoride; Young Adult | 2018 |