title: Effect of total nasal obstruction on nocturnal oxygen saturation.
abstract: BACKGROUND
  Nasal obstruction is considered a risk factor for sleep-disordered breathing (SDB), although the relationship has not been established clearly. This study explores the repercussion of total nasal packing on arterial oxygen saturation during the nocturnal resting hours and its implication in SDB.
  
  
  METHODS
  Forty patients were subjected to total nasal packing after nasal surgery or epistaxis. In all cases the oxygen desaturation index (ODI) was monitored with and without nasal packs, and the results were compared.
  
  
  RESULTS
  Thirty-seven patients (92.5%) showed poorer oxygen saturation after nasal occlusion. Of these, 19 patients (47.5%) reached pathological desaturation (ODI > or = 12). Desaturation was greater among obese subjects.
  
  
  CONCLUSIONS
  Total nasal packing causes significant nocturnal oxygen desaturation. This must be taken into account in the postoperative nasal packing of patients with respiratory failure, obesity, or SDB.
authors.affiliation: Ear, Nose, and Throat Department, Valencia University General Hospital and Medical School, Valencia, Spain. miguel.armengot@gmail.com
authors.forename: Miguel
authors.initials: M
authors.lastname: Armengot
authors.forename: Rosa
authors.initials: R
authors.lastname: Hernández
authors.forename: Patricia
authors.initials: P
authors.lastname: Miguel
authors.forename: Rafa
authors.initials: R
authors.lastname: Navarro
authors.forename: Jorge
authors.initials: J
authors.lastname: Basterra
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000403:Airway Resistance / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015508:Nasal Obstruction / Q000150:complications / Q000378:metabolism*; D010092:Oximetry; D010100:Oxygen / Q000378:metabolism*; D011446:Prospective Studies; D012720:Severity of Illness Index; D012890:Sleep / Q000502:physiology*; D020181:Sleep Apnea, Obstructive / Q000209:etiology / Q000378:metabolism*
chemical_list: D010100:Oxygen