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. 2021 Mar;15(1):1–11. doi: 10.5704/MOJ.2103.001

Table IV.

Lindeque’s Criteria for FES5

Criteria:
  • pO2 <8kpa

  • pCO2 >7.3kpa

  • Respiratory rate >35/min; despite sedation

  • Dyspnoea, tachycardia, anxiety