The color of the cannula used depends on its size (gauge) and intended purpose. Different colors are associated with specific gauges, which dictate flow rates. Therefore, there is no single answer to which color cannula is "used." The appropriate color is selected based on the patient's needs and vein size.
Here's a breakdown of common cannula colors and their typical uses, as described by DoctorKhalid.com:
| Colour | Size (Gauge) | Use |
|---|---|---|
| Blue | 22G | Small or fragile veins |
| Pink (routine) | 20G | IV fluids/drugs and Blood transfusion |
| Green | 18G | Blood transfusions and IV medication/fluids |
| White | 17G | Blood transfusions and IV medication/fluids |
Therefore, when choosing a cannula, healthcare professionals consider factors such as:
- Patient's vein size: Smaller gauges (like 22G Blue) are used for patients with small or fragile veins.
- Infusion requirements: Larger gauges (like 18G Green or 17G White) are used for rapid infusions of fluids or blood products.
- Medication being administered: Some medications require specific flow rates, dictating the appropriate cannula size.
In summary, selecting the correct cannula color depends on a comprehensive assessment of the patient's specific needs.
