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Table 4 Diamorphine dose median (range) (in mg)

From: Long-term experience with implanted intrathecal drug administration systems for failed back syndrome and chronic mechanical low back pain

  LBP FBS
Years After Implant n = 12 n = 25
1 2.30 (0.75–4.00) 3.10 (0.50–3.75)
2 3.30 (0.75–6.00) 5.20 (0.75–10.00)
3 4.30 (0.75–7.50) 5.30 (0.75–10.00)
4   5.20 (0.75–16.00)
5   5.50 (0.75–16.00)
6   4.90 (0.75–16.00)
  1. LBP = Low Back Pain (without prior surgery); FBS = Failed Back Syndrome