title: Thermometric estimation of carbon dioxide output in the anesthetized patient.
abstract: A thermometer reaching the center of an experimental thermally-insulated lime container, placed in the exhalation limb of a Foregger circle system, was used to measure the carbon dioxide (C02) output of a paralyzed anesthetized patient. Fresh gas inflow, ventilatory rate, and tidal volume were standard. Temperature rise in the canister was found closely related to CO2 output, which was calculated, after a period of stabilization, with the help of a nomogram. The results with this simple instrument coincided with those of more complex procedures.
mesh_terms: D000769:Anesthesia, Inhalation; D001464:Barium; D002245:Carbon Dioxide / Q000032:analysis*; D006221:Halothane; D006801:Humans; D006878:Hydroxides; D007442:Intubation, Intratracheal; D008722:Methods; D009609:Nitrous Oxide; D010100:Oxygen; D012119:Respiration; D013147:Spirometry / Q000379:methods; D013696:Temperature; D013821:Thermometers; D012122:Ventilators, Mechanical
chemical_list: D006878:Hydroxides; D002245:Carbon Dioxide; D001464:Barium; D009609:Nitrous Oxide; D010100:Oxygen; D006221:Halothane