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A salt containing the anion HCO3-, which is the most important buffer in the blood, it is regulated by the kidney, which excretes it in excess and retains it when needed; it increases with ingestion of excess anti-acids, diuretics and steroids; it is decreased with diarrhoea, liver disease, renal disease and chemical poisoning.

Bicarbonate is usually measured in serum as total CO2.
Ref range
24–26 Meq/L.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Bicarbonate, see there.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Chlorides and pinkish yellow were the end points for CO3 and HCO3 respectively (method 12, p.
In this study, the decrease of PH, PCO2, HCO3 in the important rate below the normal level has shown the metabolic acidose (p<0.05).
* Arterial blood gas--ph 7.14, pO2 44, pCO2 70, HCO3 12
Alaska Airventures FAR 135 HCO3 Box 8762 Palmer, AK 99645 822-3905
Saliva has some protective factors against many various micro-organisms and prevents the oral mucosa from acidic toxicity.9,10 At neutral pH, it prevents the bacterial glycolysis by inhibiting the pH dependant glucose uptake of the bacteria and potentates the antibacterial defence mechanisms as a bacteriostatic agent.11-13 It has been shown that the ratio of hypothiocyanous acid (HOSCN) to hypothiocyanite (OSCN) value had an anti-streptococcal effect and very effectively inhibits bacterial growth if it was present in saliva at 7 pH values.14 The most important factor for the increase of the pH is the HCO3.15
Workup in the ER showed hyperglycemia of 472mg/dL, metabolic acidosis (pH 6.75, pCO2 18.4, pO2 149, HCO3 2.5, base deficit 32.6, anion gap 23.5), ketosis (beta-hydroxybutyrate 11.41), glucosuria, and ketonuria, which were consistent with diabetic ketoacidosis.
Patient's capillary withdrawal time was prolonged (>5 sec) and were given inotropic agents, vasopressor support and saline challange twice a day (20 cc/kg) Her blood gases were; pH 6,56, pCO2: 104 mmHg, HCO3:9,2 mmol/L, Be:-31,6, lactat: 16,32 mmol/L at her admission.
The idea get supports from the very high correlation matrix (0.92) among Mg and HCO3 ions in the groundwater and negative with pH (Table 2).
However, the role that a prolonged transfer time plays in the ongoing dehydration of these neonates, and its influence on their serum HCO3 needs to be taken into consideration as it was shown to be significantly associated with mortality.