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Chapter 4.7 CO Diffusion and Residual Volume Symbol definitions Select this icon or press the [ESC] key to stop the measurement and exit the program. Select this icon or press the [F2] key to change the user. Select this icon or press the [F9] key to input the actual Hb and HbCO concentration. Select this icon or press the [Enter] key to start the measurement. Select this icon or press the [F11] key to trigger the shutter. Select this icon or press the [F3] key to select the medication. Select this icon or press the [F12] key to reset the zero offset. (Patient must not breathe on the mouthpiece!) Select this icon or press the [F4] key to define type of mouthpiece and filter. (Deadspace.) Select this icon or press the [+] key to increase scale. Select this icon or press the [-] key to decrease scale. Select this icon or press the [F1] key to enter comments. Select this icon or press the [F5] key to start CO edit mode. (Fast Space.) Select this icon or press the [F8] to start residual volume edit mode. Select this icon or press the [F5] key to enter Set-up. Select this icon or press the [F4] key to start the inert gas edit mode. (Fast Space.) Select this icon or press the [F6] key to toggle result window. Select this icon or press the [F8] key to start report printing. Select this icon or press the [F9] key to save the entry. 4.7.2.2.2 CO Diffusion Set up [F5] Pressing the [F5] key or pushing the button opens the CO diffusion test set up dialogue. This dialogue allows to change the display and a few test parameters to be modified either for the next following test or permanently. The dialogue is organised in four sections. - Volumes : modify the volume to be discarded before sampling and the volume to be sampled for measurement - Curves over exhaled volume Add, remove or modify the display style of the displayed curves. - Start DLCO manoeuvre select the starting mode for the measurement - Occlusion time determine the time, the shutter keeps closed to let the testgas diffuse. ZAN300 CO Diffusion 87 - 167 Part No. 5001003ENG.A