<prompt> Which IV line is preferred in patient with severe dehydration?GreenBlueBlackGrey  <response>: Ans. D GreyGrey is the 16 G cannula and wider the bore, higher the flow rate. Here the key is the rapid fluid replacement. Ref: ATLS 18th Edition 2018, chapter 3 shockColorSizeExternal Diameter mmLength mmWater flow Rate mLminRecommended UsesOrange14G2.1 mm45 mm240 mLminTrauma, Rapid blood transfusion, SurgeryGray16G1.8 mm45 mm180 mLminRapid fluid replacement, Trauma, Rapid blood transfusionGreen18G1.3 mm32 mm90 mLminRapid fluid replacement, Trauma, Rapid blood transfusionPink20G1.1 mm32 mm60 mLminMost infusions, Rapid fluid replacement, Trauma, Routine blood transfusionBlue22G0.9 mm25 mm36 mLminMost infusions Neonate, pediatric, older adults Routine blood transfusionYellow24G0.7mm19 mm20 mLminMost infusions Neonate, pediatric, older adults, Routine blood transfusion, Neonate or Pediatric blood transfusionPurple26G0.6 mm19 mm13 mLminPediatrics, Neonate 