
Hematoma Block
Indications
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Fracture reduction (most frequently distal radius or metacarpal fractures, in my practice)
My Usual Injection
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10 mL syringe
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8 mL 1% Lidocaine or .25% Marcaine without epinephrine
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22g 1 1/2 in needle
Procedure
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Obtain, at least, verbal consent for procedure
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Palpate and identify the injection site, which should be directly over the fracture site, dorsally
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Mark with a skin marker or indent with pen cap, if desired
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Apply topical antibacterial to the site x 3
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Apply gloves, if not already done
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Apply topical analgesic, if desired
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Slowly and controlled, insert needle through skin at previously identified injection site and into the fracture
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Once you get a bloody flash you are in the fracture hematoma
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Slowly inject anesthetic into the fracture
10. Withdraw needle
11. Wipe area clean
11. Apply bandage
12. Wait for anesthetic effect before beginning reduction procedure (Usually within 5 minutes)