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Acid–Base Balance in the Context of Critical Care

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Diet and Nutrition in Critical Care
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Abstract

Acid–base homeostasis of the body requires the lungs, kidneys, and a complex system of buffers. The maintenance of a normal pH of 7.35–7.45 of arterial blood is ideal for optimal organ function. This chapter will describe the role of the lungs, kidneys, and complex buffers in acid–base balance. The chapter will review the diagnosis, sources, and treatment of metabolic and respiratory acidosis and alkalosis. Mixed disorders and compensatory mechanisms will be discussed in this text. The chapter will conclude with the influence of nutrition on acid–base balance (Roberts 2013; Ayers and Dixon 2012; Madias 2002).

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Abbreviations

ABG:

Arterial blood gas

ADP:

Adenosine triphosphate

AKA:

Alcoholic ketoacidosis

BDZ:

Benzodiazepines

BE/BD:

Base excess/base deficit

Cl :

Chloride

CNS:

Central nervous system

CPOD:

Chronic obstructive pulmonary diseases

CVA:

Cerebrovascular accident

D5NS:

5 % dextrose in 0.9 % sodium chloride

DKA:

Diabetic ketoacidosis

ECF:

Extracellular fluid

HCO3 :

Bicarbonate

Kg:

Kilogram

L:

Liter

mEq:

Milliequivalent

Na+ :

Sodium

NH4+:

Ammonia

NM:

Neuromuscular

PaCO2 :

Arterial pressure of carbon dioxide

RTA:

Renal tubular acidosis

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Correspondence to Phil Ayers .

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Ayers, P., Dixon, C., Mays, A., Cannon, D.T. (2014). Acid–Base Balance in the Context of Critical Care. In: Rajendram, R., Preedy, V., Patel, V. (eds) Diet and Nutrition in Critical Care. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8503-2_100-1

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  • DOI: https://doi.org/10.1007/978-1-4614-8503-2_100-1

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