Sleep apnea in epistaxis patients treated with nasal packs.

The presence of anterior and posterior nasal packs in patients with epistaxis is known to be associated with cardiorespiratory problems and sometimes death, although the mechanism has not been well understood. To determine the incidence and severity of obstructive sleep apnea in patients with epistaxis treated with both anterior and posterior nasal packs, we obtained polysomnograms on twelve patients while the packs were in place. Ten of these patients demonstrated obstructive sleep apnea. The apnea index (apneas/hour sleep) ranged from 1 to 83, with a mean of 29; the hypopnea index (hypopneas/hour sleep) ranged from 9 to 33, with a mean of 20; and the lowest oxygen saturation (SaO2) ranged from 17% to 91%, with a mean of 77%. Ten patients returned for another polysomnogram after removal of the packs. These baseline studies showed improvement in the apnea index and in the lowest SaO2 in all patients, although four patients still demonstrated at least mild obstructive sleep apnea. This study demonstrates that nasal packs used for the treatment of epistaxis may induce obstructive sleep apnea or markedly exacerbate underlying obstructive sleep apnea and, therefore, contribute to the sudden deaths that have been reported in epistaxis patients.