My mum is going through chemotherapy right now. There are three big bags of medication, half of one going in through her leg, the rest through a drip and it takes around 7 hours. How does your body have the physical space for the medication?
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Your blood vessels are made of muscle that can relax or contract to control their diameter. If you take in a bunch of fluids, your vessels will have no issue accommodating it especially if the intake is gradual, like your mum’s medication. Then, while your vessels are expanded to hold those extra fluids, that stretching is sensed by the kidneys which will up the rate at which they filter water out of the blood and into the bladder, to eventually reach a balanced set point again — like a thermostat, but for blood pressure. And your bladder has plenty of capacity too.
Good luck to her with the treatment.
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