A 22-gauge peripheral intravenous catheter, often color-coded blue, is a medical device inserted into a peripheral vein to administer fluids, medications, or blood products. Its gauge indicates the catheter’s outer diameter; a smaller gauge number corresponds to a larger diameter. This size is frequently selected for adult patients requiring routine intravenous access and moderate infusion rates. An example of its application is during pre-operative hydration or the administration of antibiotics in a hospital setting.
The utilization of this particular catheter dimension offers several advantages. Its size allows for reasonably rapid infusion rates while typically maintaining patient comfort and minimizing the risk of vein damage. Historically, the standardization of color-coding, such as blue for 22-gauge, has improved efficiency and reduced medical errors by providing a readily identifiable visual cue for healthcare professionals. This standardization helps ensure appropriate catheter selection based on the patient’s needs and the prescribed treatment.
