title: Significant influence of biometeorological conditions on the incidence of spontaneous pneumothorax in the Kragujevac city.
abstract: OBJECTIVE
  To explore and establish an influence of biometeorological conditions on the occurrence of spontaneous pneumothorax (SP) in the city of Kragujevac (Serbia) in a five-year period.
  
  
  METHODS
  According to the type of series of cases, this was a retrospective, non-interventional study. The data collected from the medical records and operative protocols of the Thoracic Surgery Department in the period between 01.01.2005 and 31.12.2009, as well as the data on daily biometeorological phases for the Kragujevac city obtained from the Hydrometeorological Service of Serbia, and afterwards a comparative analysis of the data were performed.
  
  
  RESULTS
  A total number of 159 patients with spontaneous pneumothorax were hospitalized. Most patients were treated in 2009 (55, 34.6%), least in 2005 (22, 13.8%). Most cases occurred in March (20, 12.6%), on Tuesdays (33, 20.7%), and in the biometeorological phase 2 (0.15 SP/day). The least number of cases occurred in September (9, 5.7%), on Saturdays (6, 3.8%) and in phase 8 (0.04/day) (p<0.01).
  
  
  CONCLUSIONS
  There was an evident biometeorological influence on the occurrence of spontaneous pneumothorax in our area, so most cases were in the phase with sunny weather (atmospheric pressure falling, air temperature and moisture rising), while the lowest number was in the phase with a fall of atmospheric pressure, moisture and air temperature. The results of this research suggest a necessity of further investigations on this field.
authors.affiliation: Surgical Clinic, Clinical Center Kragujevac, Belgrade, Serbia. drmspasic@gmail.com
authors.forename: Marko
authors.initials: M
authors.lastname: Spasić
authors.forename: Vladimir
authors.initials: V
authors.lastname: Gajić
authors.forename: Slobodan
authors.initials: S
authors.lastname: Milisavljević
authors.forename: Nela
authors.initials: N
authors.lastname: Djonović
authors.forename: Jasminka
authors.initials: J
authors.lastname: Smailagić
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000453:epidemiology*; D012621:Seasons; D055771:Serbia / Q000453:epidemiology; D014887:Weather; D055815:Young Adult