An excess of<unk>  is called<unk> osis or<unk> emia, while an excess in<unk> s is called alkalosis or alkalemia. The process that causes the imbalance is classified<unk> d on the cause of the disturbance (respiratory or metabolic) and the direction of change in pH <unk> osis or alkalosis). This yields the following four basic processes: process pH compensation metabolic<unk> osis respiratory respiratory<unk> osis renal metabolic alkalosis respiratory respiratory alkalosis renal Mixed<unk> s The presence of only one of the above derangements is called a simple<unk> . In a mixed<unk> , more than one is occurring at the same time. Mixed<unk> s may feature an<unk> osis and alkosis at the same time that partially counteract each other, or there can be two different conditions affecting the pH in the same direction. The phrase "mixed<unk> osis", for example, refers to metabolic<unk> osis in conjunction with respiratory<unk> osis. Any combination is possible, as metabolic<unk> osis and alkalosis can co exist together. Calculation of imbalance The traditional approach to the study of<unk><unk><unk>  physiology has been the empirical approach. The main variants are the<unk>  excess approach and the bicarbonate approach. The quantitative approach introduced by Peter A Stewart in 1978 is newer.
Acid–base disorder
Hypoxia 
Acidosis
Anoxia
Electrolyte imbalance
Alkaline tide
Hypercapnia
Alkalosis