The colour code of 20 G cannula is-

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2024

Explanation

The international standard color code for a 20-gauge (20G) intravenous (IV) cannula is pink.
This size is highly versatile and one of the most commonly used for routine IV fluid administration, giving medications, and blood transfusions in adult patients.
It has a flow rate of approximately 60 mL/min, which is suitable for most general-purpose infusions.

Option A: Green is the color code for an 18G cannula, which has a larger bore than a 20G cannula.
Option B: Yellow corresponds to a 24G cannula, which is a much smaller size.
Option C: Blue is the color for a 22G cannula, which is slightly smaller than a 20G.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain IV Cannula Color Coding as background academic context rather than a clinical decision trigger.
Quick identification of cannula size via color coding is a critical nursing skill that enhances patient safety by ensuring the correct device is used for the prescribed therapy, preventing delays and complications.
Using a cannula that is too small for a viscous fluid or rapid infusion can cause hemolysis (for blood) or treatment delays. Conversely, using one that is too large can cause unnecessary pain and vein trauma.
What if? If a patient in the emergency department requires rapid administration of a large volume of fluids due to hypovolemic shock, a nurse would select a larger gauge cannula, such as a green (18G) or grey (16G), instead of a pink (20G), to ensure the fluid can be delivered quickly enough to stabilize the patient.

How to Approach the Question

This is a direct recall question testing your knowledge of standard medical color codes.
First, identify the key information requested in the stem: the color for a '20 G cannula'.
Access your memory of IV cannula color standards. A helpful mnemonic is to associate the colors with sizes, for example, by visualizing the different colored hubs.
Associate the gauge number (20G) with its specific color (Pink).
To confirm your answer, mentally review the other options. Green is 18G, Yellow is 24G, and Blue is 22G. Since these are incorrect, Pink is the correct choice.

Concept Tested & Keywords

QG2Y4RrFi-2Jou-udAhi6M

E6 Nursing Fundamentals Taylor p. 1092-1094

Practise the full RUHS, Jaipur, PB B.Sc Nursing Entrance-2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.