Chloride (Cl-) on the NCLEX
Hypochloremia and hyperchloremia: usually parallels sodium, NS overload context.
Chloride 98-106. Usually parallels sodium. The 'hyperchloremic metabolic acidosis' from NS resuscitation is the NCLEX angle.
Hypochloremia
Vomiting (loss of HCl), NG suctioning, diuretics. Often paired with metabolic alkalosis.
Hyperchloremia
Excessive NS infusion → hyperchloremic metabolic acidosis (non-anion gap). LR (lactated Ringer's) less chloride, less acidosis.
Frequently asked
Why does NS cause acidosis?
NS has 154 mEq/L Cl- vs serum 98-106. Hyperchloremia displaces bicarbonate → acidosis.
When pick LR over NS?
Large-volume resuscitation, sepsis, burns. Less hyperchloremia.
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