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همودیالیز
At higher levels of hyperkalemia, urgent hemodialysis should also be considered because it is the only effective way to reduce total body potassium.
Options for RRT included intermittent hemodialysis or continuous RRT.
Hemodialysis works via a countercurrent exchange mechanism to remove solutes and ultrafiltration to remove volume and uses high flow rates, approaching 350 mL/ min, which often results in tachycardia and hypotension.
Hemo- dynamic instability and need for vasopressor support are relative contraindications for hemodialysis.
Continuous venous hemofil- tration, continuous venovenous hemodialysis, and continuous venovenous hemodiafiltration are the three most common forms of continuous RRT in the ICU, with the last-mentioned being the predominant mode. ftese continuous modes use low flow rates, which are better tolerated in hemodynamically unstable patients but at the expense of efficiency mandating their continu- ous usage. ftis slow rate is also associated with blood clotting in
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