which size of intravenous catheter is typically used for blood transfusion a 24 gauge B 26 gauge C 18 gauge D 22 gauge here the correct answer is option C let's understand why first we have the 18 gauge canula which is deep green in color the size is primarily used for procedures requiring a significant volume of fluid to be ministered quickly it's the go-to choice for blood transfusions fluid replacement in large volumes handling trauma cases parental nutrition stem cell harvesting and during major surgeries next is the 22 gauge canula identified by its deep blue color this one is a bit smaller and is commonly used in pediatric cases it's suitable for transfusing fluids and blood in patients with smaller veins and is also frequently used in the elderly and oncology patients moving to the 24 gauge canula which is yellow this size is primarily chosen for infusions in neonet children and older patients where larger canulas are not suitable or might cause discomfort lastly the 26 gauge canula which is violet in color is also used predominantly in NE units and pediatric patients remember for blood transfusions the 18 gauge canula is generally the most appropriate due to its capacity to handle larger volumes efficiently