MRCEM Notes

Intercostal space

Wikipedia

Intercostal Space Key Points
  • There are 11 intercostal spaces (12 pairs of ribs)
  • Intercostal spaces are numbered according to the rib superior to it.
  • The order of the neurovascular bundle is vein-artery-nerve from superior to inferior This runs under each rib.
  • During chest drain/tube insertion the instrument should be above the rib to avoid neuromuscular bundle injury.
  • Chest drain insertion should be conducted in the 5th intercostal space in the mid-axillary line.
  • The intercostal spaces contain lymph nodes and muscle, aswell as the neurovascular bundles.
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