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This guide details the process of measuring lung volume using a water displacement method. Begin by ensuring the jug is completely full of water, then remove the cap and insert the tube, ensuring it is positioned correctly within the jug. Sterilize the tube before taking a deep breath and blowing steadily into it, without inhaling. After expelling as much air as possible, remove the tube, cap the jug, and invert it to let the water level stabilize. Finally, read and record the lung volume in liters.
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Measuring Lung Volume • 4. remove cap • 5. insert tube (ensure tube end is within jug mouth) • 6. sterilize tube • blow steadily AS MUCH AIR AS POSSIBLE IN ONE BREATH • DO NOT INHALE!! 1. ensure jug completely full 9. remove tube 10. cap jug with hand 2. cap jug with hand • 11. invert jug • allow water level to steady • read volume (in liters) • record volume on computer or blackboard. 3. keeping capped, invert jug so mouth submerged