When your patient turns blue after you’ve infiltrated lignocaine around their wound…think Methaemoglobinaemia 21 May, 201511 July, 2021 EMKF #FOAMed MetHb level (%) Signs and symptoms 1-3% (normal) None 3-15% Low pulse oximetry (<90%) Gray cutaneous coloration 15-20% Chocolate brown blood Cyanosis 20-50% Dizziness, syncope Dyspnea Weakness Headache 50-70% CNS depression, coma, seizure Dysrhythmias Tachypnea Metabolic acidosis >70% Death Hypoxic injury Share this:Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Like this:Like Loading... Related EMKF The Emergency Medicine Kenya (EMK) Foundation is a not-for-profit organization registered in Kenya in 2015 that aims to ensure timely, accessible and quality lifesaving emergency care in Kenya.
