As Alexandra’s throat and mouth is completely filled by the massive gag, and her entire body encased airtight, a new method for her to receive oxygen is necessary.
The space that has been created within Alexandra’s massive breasts after the breast implants are removed, is then partially used for her oxygen requirement. The implant within her left breast is replaced with a tank of nearly pure oxygen. The tank is surrounded with enough silicone material to still provide the exact same sensation for Alexandra, an identical feeling of touch and behaviour, as if she still had her silicone implants. It is connected to the artificial heart, which then feeds the oxygen straight into her bloodstream.
Because of the CO2 recycling in the artificial heart, a lot of the injected oxygen is actually regained. This means that the oxygen tank only really has to be refilled only every few months, although Lumina likes to make the maintenance process a far more frequent occurrence.
The resupply connection to the tank is passed in between Alexandra’s ribs during her surgery, and is then surgically fed into Alexandra’s stomach. This way, the oxygen tank in her breast can be resupplied through the supply tube going through her entire body.
With Alexandra’s lungs completely removed and the power supply having taken up their place, Alexandra cannot breathe any more. Her oxygen is directly fed into her blood stream. Because of this, Alexandra’s chest doesn’t have the usual up and down movements usually associated with breath.