Bj. O'Brien et al., Tension pneumo-orbitus and pneumocephalus induced by a nasal oxygen cannula: Report on two paediatric cases, J PAEDIAT C, 36(5), 2000, pp. 511-514
The present paper highlights the potential dangers of misplaced nasopharyng
eal oxygen cannulae causing secondary pneumo-orbitus and pneumocephalus in
two paediatric patients. While this complication is uncommon, early recogni
tion allows prompt and appropriate intervention, with cessation of nasal ox
ygen, cannula removal, early investigation with computed tomography (CT) he
ad/orbit scan and orbital or cranial decompression, if required. Early CT i
maging identifies medial orbital or paranasal sinus fractures, the presence
of sinusitis, associated intracranial air and assessment of the degree of
orbital or intracranial tension. Antibiotics are not usually required for t
his type of clean injury unless pre-existing sinusitis is identified. In bo
th cases, direct orbital decompression was performed with excellent results
after identification of marked unilateral tense exophthalmos, delayed pupi
llary reactions to light and ophthalmopegia.