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a physiologic variation or increase of a certain constituent in body fluids.
acid tide a temporary increase in the acidity of the urine that sometimes follows fasting.
alkaline tide a temporary increase in the alkalinity of the urine during gastric digestion.
fat tide the increase of a fat in the lymph and blood following a meal.
a period of urinary neutrality or even alkalinity after meals, resulting from withdrawal of hydrogen ion for the purpose of secretion of the highly acid gastric juice.
Synonym(s): alkaline wave
alkaline tideA transient postprandial increase in blood and urine pH, related to sequestration of H+ ions by the stomach during early digestion.
al·ka·line tide(al'kă-lin tīd)
A period of urinary neutrality or even alkalinity after meals due to withdrawal of hydrogen ions for secretion of highly acid gastric juice.
alkaline tidea period when the alkalinity of the body and urinary system is affected by excessive secretion of digestive hydrochloric acid.
having the reactions of an alkali.
a basic chemical fact that acids and alkalis react together so that the mixing of them in medications is likely to render the medicine ineffective. The phenomenon is utilized in the treatment of poisoning when the objective is to combat the effects of an ingested substance.
a nonspecific enzyme localized on cell membranes that hydrolyzes phosphate esters liberating inorganic phosphate and has an optimal pH of about 9.5. Serum alkaline phosphatase activity is elevated in hepatobiliary disease, especially in obstructive jaundice, and in bone diseases with increased osteoblastic activity such as hyperparathyroidism, osteitis deformans and bone cancer. The liver and bone tissue each produce a distinct isoenzyme. Called also AP, alkaline phosphomonoesterase, glycerophosphatase.
alkaline picrate test
a technique for estimating urine creatinine levels.
see postprandial alkaline tide.
the urine of carnivores is acidic, that of herbivores is alkaline. The presence of an alkaline urine in a carnivore, provided the sample is fresh and uncontaminated, is an indication that the patient is alkalotic, but urine findings must always be interpreted with caution.