Methodyflurane (Penthrox)- Green whistle

Question 1

Indications

Answer 1

Moderate to Severe pain

Question 2

Contraindications / cautious

Answer 2

Allergy, family Hx of malignant hyperthermia, renal impairment, inability to adhere to commands, prior use in the last 7 days. Pregnancy

Cautions- careful administering in confined space- open windows , with neuro patients - makes ppl loopy/ drowsy

Question 3

Dose/ Route/ onset

Answer 3

Self Admin-inhaled
Adult -MAX 6ml daily ( 3ml with a single “top up “ to 6ml)

Children 3ml max dose

Onset of action- 1-2mins (instant relief). Action Drops off quickly after patient stops administering