Trick of the Trade: Diphenhydramine for Local Anesthesia
Say you have any one of the following three scenarios in a patient who requires local anesthesia for repairing a minor wound laceration in the emergency department: 1 – Documented allergy to “-caine” agents (now, before you grumble…the patient assures you that this is a true allergy; yes, the whole nine yards with full-blown anaphylaxis that occurred years ago with some “-caine”). 2 – Shortage of all forms of parenteral lidocaine 1% and 2% (not [...]