A patient receiving vancomycin through a peripheral IV develops redness and streaking along the vein proximal to the insertion site. Using the INS Phlebitis Scale, this finding is BEST classified as:
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A
Grade 1 โ pain at site
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B
Grade 2 โ pain with erythema
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C
Grade 3 โ pain, erythema, streak formation, palpable cord
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D
Grade 4 โ pain, erythema, streak, palpable cord >1 inch, purulent drainage