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  • Title: High permeability dialysis membrane allows effective removal of myoglobin in acute kidney injury resulting from rhabdomyolysis.
    Author: Sorrentino SA, Kielstein JT, Lukasz A, Sorrentino JN, Gohrbandt B, Haller H, Schmidt BM.
    Journal: Crit Care Med; 2011 Jan; 39(1):184-6. PubMed ID: 21057310.
    Abstract:
    OBJECTIVE: The objective of this study was to test the ability of myoglobin removal of a novel, high-permeability polysulphone dialyzer in acute kidney injury as a result of rhabdomyolysis. SETTING: Intensive care unit of a tertiary care hospital. PATIENTS: Six patients (one female; aged 24, 36, 41, 55, 63, and 65 yrs) with oligoanuric acute kidney injury resulting from rhabdomyolysis. INTERVENTIONS: Extended dialysis was performed using a single-pass batch dialysis system and a novel polysulphone high-flux dialyzer (effective surface area 1.8 m; inner lumen 220 μm; wall thickness 35 μm; allowing elimination of substances with a molecular weight of up to 30 kDa). MEASUREMENTS AND MAIN RESULTS: Samples were collected at prefilter and postfilter sites as well as from the collected spent dialysate. The dialyzer clearance was calculated from concentrations before and directly after the dialysis membrane, the blood flow, and the ultrafiltration rate. The total amount of the myoglobin removed was measured directly as the whole dialysate was preserved. A median myoglobin clearance of 90.5 mL/min (range, 52.4-126.3 mL/min) was achieved, resulting in a median myoglobin removal per treatment hour of 0.54 g (range, 0.15-2.21 g). CONCLUSIONS: Extended dialysis with a high-flux, high-permeability membrane allowed effective elimination of myoglobin with a clearance of myoglobin that surpassed all previously reported dialysis techniques. This membrane may be advantageous in preventing acute kidney injury or avoiding complete loss of kidney function in patients with rhabdomyolysis. Further studies are needed to determine whether improving renal recovery or mortality in patients with acute kidney injury resulting from rhabdomyolysis is possible.
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