People worry about the potassium levels in Lactated Ringer's (Ringers Lactate), but what if I told you there's more hyperkalemia with saline? 0.9% saline is 154mmol/L of sodium and 154mmol/L of chloride. That's it. There's no potassium, calcium, magnesium, or buffering agent. Ringer's lactate, however, has 130mmol/L of sodium, 109mmol/L of chloride, 4mmol/L of potassium, …

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