Figure 1
From: Renal tubular acidosis is highly prevalent in critically ill patients
Daily assessment of the acid-base state during the first 7 days after ICU admission. Forty-three of the patients presented with hyperchloremic acidosis on one or more days. In 31 patients hyperchloremic acidosis (HCA) was associated with renal-tubular acidosis (RTA) characterized by a urine osmolal gap (UOG) ≤150 mosmol/kg and a preserved renal function. The majority (23 of 31) of patients with RTA presented with RTA type II, while 8 of 31 patients showed characteristics of RTA type I. In 26 of the 31 patients with RTA, metabolic acidosis was neutralized mainly by simultaneously decreased plasma albumin leading to a neutral arterial pH. *On one or more days during the first week after admission; #glomerular filtration rate (GFR) ≥25 ml/min.