Why do we have dofferent gauges of needle for injection? What difference does it make?
In: Biology
A higher gauge allows for a greater flow rate (without cranking up the pressure, which is generally a bad idea) at the cost of greater discomfort to the patient. If you’re giving a 500 mL blood donation, you use a fairly high gauge because it would take hours otherwise. If you’re only getting a few mL of a drug, smaller gauge is fine.
Obligatory *not a doctor*. There may be other factors.
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