title: Measurements on the routine chest radiograph as prognostic markers in Chinese peritoneal dialysis patients.
abstract: BACKGROUND
  Fluid overload is a common problem in peritoneal dialysis (PD) patients. Cardiothoracic ratio (CTR) and vascular pedicle width (VPW) in routine chest radiograph are useful indicators of intravascular volume status and may represent important prognostic factors of PD patients.
  
  
  METHODS
  We measured VPW and CTR in 286 unselected prevalent PD patients. VPW was further adjusted for the thoracic diameter (VPWR). One-year actuarial survival, technique survival, and duration of hospitalization were analyzed.
  
  
  RESULTS
  The mean values of VPW, CTR, VPWR were 47.31 ± 4.73 mm, 0.542 ± 0.074, 0.170 ± 0.024, respectively. VPW correlated with age (r = 0.143; p = 0.016), body weight (r = 0.371; p < 0.001), body height (r = 0.271; p < 0.001), and Charlson's index score (r = 0.153; p = 0.01). One-year patient survival was 87.8%, and technique survival was 82.2%. None of the radiological measurements had an independent effect on one-year actuarial or technique survival by multivariate analysis. Both CTR and VPWR correlated with the duration of hospitalization (r = 0.192 and 0.186, respectively (p = 0.001 and 0.002). Multivariate regression analysis by log-linear modeling showed that independent predictors of one-year hospitalization were VPWR, serum albumin, and SGA overall score.
  
  
  CONCLUSIONS
  In Chinese PD patients, VPW was significantly correlated with age, body weight, body height and Charlson's index score. VPWR was an independent predictor of the duration of hospitalization. Further studies are needed to confirm the prognostic value of these radiographic measurements in PD patients.
authors: Department of Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
authors: N
authors: N
authors: Gao
authors: B C-H
authors: BC
authors: Kwan
authors: K-M
authors: KM
authors: Chow
authors: K-Y
authors: KY
authors: Chung
authors: C-B
authors: CB
authors: Leung
authors: P K-T
authors: PK
authors: Li
authors: C-C
authors: CC
authors: Szeto
mesh_terms: D001810:Blood Volume; D001827:Body Height; D001835:Body Weight; D002318:Cardiovascular Diseases / Q000150:complications; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000401:mortality / Q000628:therapy*; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D010530:Peritoneal Dialysis / Q000009:adverse effects; D011379:Prognosis; D013902:Radiography, Thoracic; D016019:Survival Analysis; D015996:Survival Rate