title: Alkaline pH in middle meatus in cases of chronic rhinosinusitis.
abstract: METHODS
  Prospective and observational study.
  
  
  METHODS
  The study group was divided in two groups consisted of 50 normal subjects (100 meati) and 50 patients (100 meati) of chronic rhinosinusitis (CRS). All subjects underwent nasal endoscopy along with measurement of the pH of the middle meatus using a portable pH monitoring device. Statistical analysis was done to compare mean pH of normal middle meatus with the diseased one.
  
  
  RESULTS
  The mean pH of normal 100 middle meati was measured to be 7.35(±0.82). The mean pH of 100 middle meatii in CRS patients was higher 7.81(±0.83) and was found to be statistically significant (p=0.00011).
  
  
  CONCLUSIONS
  Alkaline pH (7.81) was observed in the middle meatus of CRS patients.
authors.affiliation: Department of Otorhinolaryngology Head & Neck Surgery, Lady Hardinge Medical College & Associated Hospitals, New Delhi, India. Electronic address: bhawana_luna22@yahoo.com.
authors.forename: G S
authors.initials: GS
authors.lastname: Bhawana
authors.affiliation: Department of Otorhinolaryngology Head & Neck Surgery, Lady Hardinge Medical College & Associated Hospitals, New Delhi, India.
authors.forename: Sunil
authors.initials: S
authors.lastname: Kumar
authors.affiliation: Department of Surgery, Lady Hardinge Medical College & Associated Hospitals, New Delhi, India.
authors.forename: Ajay
authors.initials: A
authors.lastname: Kumar
mesh_terms: D000293:Adolescent; D000328:Adult; D000468:Alkalies / Q000737:chemistry*; D002908:Chronic Disease; D004724:Endoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000378:metabolism* / Q000473:pathology; D010256:Paranasal Sinuses / Q000378:metabolism* / Q000473:pathology; D011446:Prospective Studies; D012220:Rhinitis / Q000175:diagnosis / Q000378:metabolism*; D012852:Sinusitis / Q000175:diagnosis / Q000378:metabolism*; D055815:Young Adult
chemical_list: D000468:Alkalies