title: [Comparative study of pulmonary function after conventional ultrafiltration or modified ultrafiltration during cardiac surgery of infants].
abstract: OBJECTIVE
  To compare the effects of conventional ultrafiltration and modified ultrafiltration in protecting patients' pulmonary function during cardiopulmonary bypass.
  
  
  METHODS
  Thirty infants patients (less than 7 kg) were divided into two groups: conventional ultrafiltration group (CUF, n = 15) and modified ultrafiltration group (MUF, n = 15). The volume of ultrafiltration, transfusion, hematocrit (HCT) before and after ultrafiltration, patients' respiration function (respiration index, A-aDO2, airway pressure), the time of mechanical ventilation and ICU in the two groups were respectively monitored.
  
  
  RESULTS
  The transfusion in MUF group was significantly less than in CUF group (P < 0.01), and the volume of ultrafiltration in MUF group was significantly more than in CUF group (P < 0.01). The time of mechanical ventilation and ICU staying in MUF group were significantly shorter in MUF group than that in CUF group (P < 0.05). At 12 and 24 hours after operations, the A-aDO2 in MUF group was lower than that in CUF group (P < 0.05), and the respiratory index in MUF group was higher than that in CUF group (P < 0.05).
  
  
  CONCLUSIONS
  The modified ultrafiltration can effectively improve pulmonary function after operations for low weight infants.
authors.affiliation: Department of Cardiopulmonary Bypass, Cardiovascular Institute, Fu Wai Hospital, CAMS, PUMC, Beijing 100037, China. Jinping2784@sina.com
authors.forename: Jin-ping
authors.initials: JP
authors.lastname: Liu
authors.forename: Cun
authors.initials: C
authors.lastname: Long
authors.forename: Zheng-yi
authors.initials: ZY
authors.lastname: Feng
authors.forename: Bing-yang
authors.initials: BY
authors.lastname: Ji
authors.forename: Chun-hua
authors.initials: CH
authors.lastname: Li
mesh_terms: D002315:Cardiopulmonary Bypass; D005260:Female; D006330:Heart Defects, Congenital / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007223:Infant; D008168:Lung / Q000503:physiopathology*; D008297:Male; D012129:Respiratory Function Tests; D014462:Ultrafiltration / Q000379:methods