The major criteria for custom provisional fabrication is done by making preliminary impression and by making a cast preparation prior to tooth preparation. These steps are essential to fabrication process.
There are two possible causes of metabolic alkalosis such as ,firstly loss of stomach acids which is most common cause of metabolic alkalosis ,secondly reduced volume of blood in the arteries.
Metabolic alkaloiss is developed by body when it loses too much acid or gains too much base then excess vomiting which causes electrolyte loss, adrenal disease ,loss of potassium or sodium in a short amount of time.
Concomitant NH4+ losses in the diarrhea fluid may also contribute to development of metabolic alkalosis when hyperchloremic acidosis caused by the loss of too much sodium bicarbonate from the body which can happen with severe diarrhea.
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