Grey colour injection port cap of I.V cannula represents which of the following

Question

Question

This question was previously asked in

SGPGI Staff Nurse Official Paper (Held On: 28 Feb, 2024 Shift 1)

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Answer 1

Correct Answer: 16 G

Rationale:

The grey color injection port cap of an I.V. cannula signifies its gauge size. In this case, it represents a 16-gauge (16 G) cannula. The gauge of a cannula refers to the diameter of the needle or catheter, and it is an essential parameter in determining its clinical use.
A 16 G cannula is widely used in clinical settings where rapid fluid replacement or blood transfusion is required. Its larger diameter allows for faster flow rates, making it ideal in emergency situations such as trauma or severe dehydration.

Explanation of Other Options:

14 G

Rationale: The 14 G cannula is typically identified with an orange color cap. It is the largest size in commonly used I.V. cannulas and is used in critical emergencies where extremely rapid fluid resuscitation or blood transfusion is necessary. However, it is not associated with the grey color cap.

18 G

Rationale: The 18 G cannula is identified with a green color cap. It is slightly smaller than 16 G and is frequently used for routine blood transfusions, medication administration, or fluid replacement. It does not correspond to the grey color cap.

20 G

Rationale: The 20 G cannula is identified with a pink color cap. It is smaller than both 16 G and 18 G and is used for routine intravenous access for medications or fluids. It is not linked to the grey color cap.

No Option Provided

Rationale: In the context of this question, there is no fifth option provided in the list, so no further explanation is needed.

Additional Information:

The gauge of an I.V. cannula inversely correlates with its size. A smaller gauge number means a larger diameter, and a larger gauge number means a smaller diameter.
Color coding of cannula caps is standardized in clinical practice to ensure quick identification of the gauge size, which is critical in emergencies and routine medical care.
Proper selection of cannula size is essential to meet the specific needs of the patient, such as the speed of fluid administration and the type of therapy being provided.

Conclusion:

The grey color injection port cap of an I.V. cannula represents a 16 G cannula, making it suitable for high-flow fluid resuscitation or blood transfusion. Other options correspond to different gauge sizes and color codes, which are not associated with the grey cap.