title: Acute effects of hemodialysis on pulmonary function in patients with end-stage renal disease.
abstract: BACKGROUND
  Despite many beneficial effects, hemodialysis may cause pulmonary dysfunction. On the other hand, patients with end-stage renal disease are potentially prone to lung edema and respiratory dysfunction. This study was conducted to evaluate the alterations of pulmonary function indicators after hemodialysis, measured by spirometry.
  
  
  METHODS
  A total of 26 patients on hemodialysis for at least 3 months were studied. They were all older than 18 years old. None of the patients was a current or recent smoker, and none of them had a history of respiratory diseases, current or recent respiratory infections, musculoskeletal disorders, or tuberculosis. All of the patients underwent the spirometry test before and after a 4-hour hemodialysis session, and the forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), vital capacity (VC), and FEV1/FVC ratio were measured.
  
  
  RESULTS
  After hemodialysis, the FVC significantly increased (P = .02), while no significant improvement in the FEV1, VC, and FEV1/FVC ratio were observed. Gender was related to the changes in VC, with better results in women (P < .001). There was no association between the changes in spirometry parameters and age, body mass index, cause of kidney failure, type of anion used for hemodialysis, and weight changes.
  
  
  CONCLUSIONS
  According to our results, pulmonary function, especially the FVC, improves after a session of hemodialysis.
authors.affiliation: Shahid Beheshti University of Medical Sciences, Tehran, Iran. rayhaneh.rahgoshai@gmail.com
authors.forename: Rayhaneh
authors.initials: R
authors.lastname: Rahgoshai
authors.forename: Raham
authors.initials: R
authors.lastname: Rahgoshai
authors.forename: Ardeshir
authors.initials: A
authors.lastname: Khosraviani
authors.forename: Amir Ahmad
authors.initials: AA
authors.lastname: Nasiri
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Solouki
mesh_terms: D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy*; D008171:Lung Diseases / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis; D012129:Respiratory Function Tests; D012737:Sex Factors; D013147:Spirometry