3-903:

You have been examined to see how well the different parts of your lungs are being oxygenated.

The lungs consist of a right-hand and a left-hand lung. These lungs, in turn, consist of various pulmonary lobes. There are 3 pulmonary lobes in the right-hand lung. There are 2 pulmonary lobes in the left-hand lung.

Body tissue can conduct electrical currents. Depending on the type of tissue and substances it contains, the quality of the electrical conduction differs. In the lung tissue, the electricity is conducted more or less well depending on how much air is in the lungs.

Your examination involved attaching electrodes to your chest. A small amount of electrical current is sent to the lung tissue via the electrodes. Measurements were then taken to see how well the lung tissue has conducted the electrical current. These measurements enable conclusions to be drawn as to how well the different parts of the lungs are being oxygenated.