title: Serum procalcitonin level and leukocyte antisedimentation rate as early predictors of respiratory dysfunction after oesophageal tumour resection.
abstract: BACKGROUND
  Postoperative care after oesophageal tumour resection holds a high risk of respiratory complications. We therefore aimed to determine the value of systemic inflammatory markers in predicting arterial hypoxaemia as the earliest sign of developing lung injury after oesophageal tumour resection.
  
  
  METHODS
  In a prospective observational study, 33 consecutive patients were observed for three days (T1-T3) after admission (T0) to an intensive care unit following oesophageal tumour resection. The daily highest values of the heart rate, axillary temperature, leukocyte count and PaCO2 were recorded. Serum C-reactive protein and procalcitonin concentrations and the leukocyte antisedimentation rate (LAR) were determined at T1 and T2. Respiratory function was monitored 6-hourly measurement of the PaO2/FIO2 ratio, and the lowest value was recorded at T3. Patients were categorised as normoxaemic or hypoxaemic using the cutoff value of 300 mmHg for PaO2/FIO2.
  
  
  RESULTS
  Seventeen out of 33 patients were classified as hypoxaemic and 16 patients as normoxaemic at T3. Increases of temperature at T0 and of the procalcitonin and LAR values at T2 were predictive of hypoxaemia at T3 (P < 0.05, P < 0.01 and P < 0.001, respectively). The area under the receiver-operating characteristic curve was 0.65 for the temperature at T0, which was significantly lower than that for the procalcitonin level at T2 (0.83; 95% confidence interval, 0.69-0.97; P < 0.01) and that for LAR at T2 (0.89; 95% confidence interval, 0.77-1.00; P < 0.001).
  
  
  CONCLUSIONS
  These results suggest that an elevated LAR (>15%) and an elevated procalcitonin concentration (>2.5 ng/ml) measured on the second postoperative day can predict next-day arterial hypoxaemia (PaO2/FIO2 < 300 mmHg) after oesophageal tumour resection.
authors.affiliation: Department of Anaesthesiology and Intensive Care, University of Pecs, Hungary. bogar@clinics.pote.hu
authors.forename: Lajos
authors.initials: L
authors.lastname: Bogar
authors.forename: Zsolt
authors.initials: Z
authors.lastname: Molnar
authors.forename: Piroska
authors.initials: P
authors.lastname: Tarsoly
authors.forename: Peter
authors.initials: P
authors.lastname: Kenyeres
authors.forename: Sandor
authors.initials: S
authors.lastname: Marton
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood; D001799:Blood Sedimentation; D002116:Calcitonin / Q000097:blood*; D015740:Calcitonin Gene-Related Peptide; D004938:Esophageal Neoplasms / Q000097:blood* / Q000150:complications / Q000601:surgery; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011498:Protein Precursors / Q000097:blood*; D012131:Respiratory Insufficiency / Q000097:blood* / Q000209:etiology
chemical_list: D014408:Biomarkers, Tumor; C000606589:CALCA protein, human; D011498:Protein Precursors; D002116:Calcitonin; D015740:Calcitonin Gene-Related Peptide