Table 5.

Laboratory parameters and microorganisms recovered

Laboratory ParametersAllElderly (>75 yr)Nonelderly (18–74 yr)P Value
n20818190
 spKt/V1.49 (0.4)1.52 (0.70)1.50 (0.42)0.57
 URR (%)71.0 (10.3)69.2 (15.7)71.2 (9.9)0.47
 Serum albumin (g/L)3.7 (0.5)3.6 (0.5)3.7 (0.5)0.56
 Hemoglobin (g/dl)11.2 (1.4)11.7 (1.6)11.2 (1.4)0.37
 Serum ferritin (ng/ml)639.4 (505.1)465 (379)656 (516)0.12
 Microorganisms, n (%)177 (85)13 (72)164 (86)
  Gram-positive cocci131 (74)9 (75)122 (74)
  Staphylococcus aureus46 (35)4 (44)42 (34)
  Gram-negative rods38 (21)3 (25)35 (21)
  Fungal2 (0.5)0 (0)2 (0.6)
  • Laboratory parameters obtained within 30 days of the first catheter-related bloodstream infection event and microorganisms recovered throughout the entire study period. Data expressed in mean (SD). spKt/V, single pool Kt/V; URR, urea reduction ratio.