PFT Exam # 1 Pulmonary function tests
(with Complete Solutions)
Residual Volume correct answers Lung Volume represents that amount of air left in the lungs
after a forced exhalation CAN NOT BE MEASURED ONLY CALCULATED!!
Gas Chromatography correct answers (ABSORTION TYPE) Analyzers several different gases
at once; measures NE,02,Nitrogen,CO, effected by WATER
Mass Spectrometry correct answers Gases are vacuum into a holding chamber where the
gases are separated, very expensive
02 Analyzers ( BEST ONE) correct answers a) Galvanic / Ziicohium fuel cell, fast
responding cells that never goes off has; Scrubber, Desicant , Analyzer
Scrubber correct answers co2 remover after exhaling
Desicant correct answers H20 remover after exhaling
Analyzer correct answers Analyzes remainder gas
Two point Calibration correct answers Required effected by H20, High pressure and altitudes
Polarographic Analyzer correct answers same as two point calibration but needs batteries
, Infrared absorption analyzer correct answers measures CO2, CO, CH4
Helium (HE) correct answers Measures gas % using thermal conducting anheatsstone bridge
Don't use with flammable gases
Nitrogen ( N2) correct answers Used in breath by breath N2 Testing
Blood gas Analyzers correct answers directly measure the po2, pco2, & pH. All other valves are
calculated using mathematical formulas ( Hco3; BE)
All blood gas analyzers have specific electrodes ( conductor of electricity) which measure
02,co2, & H+ ions content within blood sample ( ABG or VBG)
Severinghaus Electrode ( Pco2) correct answers Nylon spacer, teflon membrane, glass electrode.
pCO2= 5% to 10%
Blood sample is introduced at the tip of the electrode, diffuses across the teflon
membrane combining with the electrolyte, altering the pH.
pH = Co2
Clark Electrode (pO2) correct answers Platinum cathode, silver-silver chloride anode
0% to 12-20%
Diffuses and collected electrons
Sanz Electrode (pH) correct answers Reference electrode containing a KCL buffer solution with
a known pH.
(with Complete Solutions)
Residual Volume correct answers Lung Volume represents that amount of air left in the lungs
after a forced exhalation CAN NOT BE MEASURED ONLY CALCULATED!!
Gas Chromatography correct answers (ABSORTION TYPE) Analyzers several different gases
at once; measures NE,02,Nitrogen,CO, effected by WATER
Mass Spectrometry correct answers Gases are vacuum into a holding chamber where the
gases are separated, very expensive
02 Analyzers ( BEST ONE) correct answers a) Galvanic / Ziicohium fuel cell, fast
responding cells that never goes off has; Scrubber, Desicant , Analyzer
Scrubber correct answers co2 remover after exhaling
Desicant correct answers H20 remover after exhaling
Analyzer correct answers Analyzes remainder gas
Two point Calibration correct answers Required effected by H20, High pressure and altitudes
Polarographic Analyzer correct answers same as two point calibration but needs batteries
, Infrared absorption analyzer correct answers measures CO2, CO, CH4
Helium (HE) correct answers Measures gas % using thermal conducting anheatsstone bridge
Don't use with flammable gases
Nitrogen ( N2) correct answers Used in breath by breath N2 Testing
Blood gas Analyzers correct answers directly measure the po2, pco2, & pH. All other valves are
calculated using mathematical formulas ( Hco3; BE)
All blood gas analyzers have specific electrodes ( conductor of electricity) which measure
02,co2, & H+ ions content within blood sample ( ABG or VBG)
Severinghaus Electrode ( Pco2) correct answers Nylon spacer, teflon membrane, glass electrode.
pCO2= 5% to 10%
Blood sample is introduced at the tip of the electrode, diffuses across the teflon
membrane combining with the electrolyte, altering the pH.
pH = Co2
Clark Electrode (pO2) correct answers Platinum cathode, silver-silver chloride anode
0% to 12-20%
Diffuses and collected electrons
Sanz Electrode (pH) correct answers Reference electrode containing a KCL buffer solution with
a known pH.
