Two Step Versus the Standard Three Step Approach of the WHO Analgesic Ladder for Cancer Pain Relief.

The World Health Organization analgesic ladder for cancer pain relief is an internationally used approach to managing cancer pain. Patients generally start on Step 1 of the ladder (paracetamol). As pain increases or is not well controlled on this, they progress to Step 2 which involves a stronger pain killer (weak opioid such as codeine). If pain is still not controlled they progress to Step 3 of the ladder which is a strong opioid (such as morphine). Work to date has suggested that Step 2 may be unnecessary and most patients usually require Step 3 analgesia. The TVT trial aims to examine the standard approach (Step 1-Step2-Step-3) versus a two step approach (Step 1-Step 3).