Crit Care Resusc
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The correct renal response to metabolic acidosis should be a negative shift in the urinary strong ion difference ([SID](urinary) = [Na(+)](urinary) + [K(+)](urinary) - [Cl(-)](urinary)). Our hypothesis was that the failure to decrease the [SID](urinary) is frequently present and leads to a more severe metabolic acidosis. ⋯ Most of the critically ill patients with metabolic acidosis showed inappropriate renal compensation, as evidenced by positive [SID](urinary) and higher plasma [Cl(-)]. These patients had more severe metabolic acidosis. On the other hand, patients with adequate renal response and negative [SID](urinary) had positive Δ[AG] - Δ[HCO(3)(-)]. These findings, usually considered as a diagnosis of associated metabolic alkalosis, might be interpreted as the proper renal response to metabolic acidosis.
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Case Reports
Emergency use of extracorporeal membrane oxygenation for a foreign body obstructing the airway.
We report on the successful emergency use of extracorporeal membrane oxygenation to provide oxygenation and ventilation to a patient with lifethreatening airway obstruction, and then facilitating the removal of a tracheal food bolus by rigid bronchoscopy.