Table 3.

Reasons for stopping CRRT

ReasonsNumber of FiltersPercentage (%)FUN/BUN Ratio
Factors affecting treatment time without affecting filter function
    D/C for surgical procedures106.30.93 (0.92 to 0.99)
    D/C for medical procedures95.71.0 (0.95 to 1)
    routine filter changes1610.10.95 (0.84 to 1.0)
    machine problems85.00.97 (0.85 to 1.0)
    transition to IHD1710.70.96 (0.82 to 0.97)
    venous access clot63.80.97 (0.96 to 0.98)
    physician decision106.30.98 (0.94 to 1)
    patient or family decision116.90.96 (0.94 to 1)
    patient recovery63.80.95 (0.92 to 0.99)
    death31.90.98 (0.87 to 1.0)
    access change95.70.9 (0.87 to 0.95)
Factors affecting filter function
    filter clotted4125.80.89 (0.83 to 0.94)
    filter leak10.630.745
    low-sieving concentration polarization127.50.86 (0.79 to 1.0)
  • Factors that affect the estimated and delivered dose. These factors could reduce effective treatment time without affecting filter efficacy (e.g., transition from CRRT to IHD), or they could reduce effective treatment time and affect filter efficacy (e.g., filter clotting). Filter efficacy was estimated by FUN/BUN ratios and was measured every 12 hours. IHD, intermittent hemodialysis. D/C, discontinued.