plecosmography have the patient sit in the box attach the nose clip and put hands on cheeks close the door and have the patient breathe normally close the box vent open and close the box vent the top left of the screen to equilibrate the pressure in the box if the patient is breathing in the green area of the stability area the quality control gauge select tgv collect at least four stable tidal breaths at the end of a breath press the space bar to collect closed shutter pants the panting rate is guided by the metrodome on the side of the quality graph have the patient inhale maximally and exhale maximally blow it all out keep blowing keep blowing keep blowing keep blowing select the space bar to end the test at the end of the test the quality graph shows the closed panting rate it will be green if it's in the set number of minimum and maximum range the switch and error will be displayed in the center in the event your patient cannot do platfismography nitrogen washout is a great alternative plethography airways resistance and thoracic gas volume have the patient sit in the box attach nose clip and put hands on cheeks close the door and have the patient breathe normally close the box vent open and close the box vent the top left of the screen to equilibrate the pressure in the box if the patient is breathing in the green area of the stability area the quality control gauge select r-a-w collect at least four stable title breaths at the end of the breath press the space bar and collect open shutter pants the painting rate is guided by the metronome on the side of the quality graph after the open shutter pants are collected press the space bar and collect four closed shutter pans the painting rate again is guided by the metronome on the side of the quality graph select spacebar to end test note when performing airways resistance and thoracic gas volume together it is often difficult to get an acceptable switch in this is why it is recommended to perform tgv separately adjustment of the tgv tracing double left click on the tgv raw graph select the graph type close for tgv and open for raw adjust the position of the angle of the graph select show guides will place parallel lines on the graph select open to show open shutter pans show four breasts superimposed or four separate breaths