Hyperkalaemia is defined as serum potassium concentration greater than 5.5 mmol/l. Its prevalence in the general population is unknown, but it is thought to occur in 1-10% of patients admitted to hospital.1 The rate of morbidity and mortality associated with hyperkalaemia has risen greatly with the use of drugs that target the renin-angiotensin system, and since publication 10 years ago of a ra...

The effects of supplemental potassium were studied on growth, ion concentration and anatomical parameters in one year old olive trees, Olea europaea L., grown in sand culture in greenhouse at different levels of NaCl for 80 days. The experiments were conducted in a completely randomized design as a factorial. Factor one was salinity (0, 40 or 80 mM NaCl) and the second factor was potassium leve...

this study was carried out to determine nitrogen, phosphorus, and potassium contents of rangeland plants using spectral reflectance value. the measurements were made in 1 m2 area of different parts of a rangeland. a portable spectroradiometer capable of measuring the wavelength range of 325-1,075 nm of the electromagnetic spectrum was used to collect spectral data. spectral measurements were ma...

OBJECTIVE To review the metabolism and function of potassium and causes and management of hypokalaemia. DATA SOURCES A review of studies reported from 1966 to 1998 and identified through a MEDLINE search of the English-language literature of hypokalaemia. SUMMARY OF REVIEW Potassium is predominantly an intracellular ion that contributes to approximately 50% of the intracellular fluid osmola...

1. Individual variations in the potassium content of the fresh muscles of frogs are notable even when computed as percentages of the dry solids. The potassium content averaged higher in freshly collected summer frogs than in winter frogs after a period of captivity. 2. Muscles show a loss of from 8 to 15 per cent of their potassium during perfusion with potassium-free Ringer solution but tenaci...

Rat lenses were incubated for 24 hr in media with various concentrations of potassium and a constant concentration of sodium. The media were prepared by adding potassium chloride to a basic 300 mOsm TC-199 medium. Concentrations of potassium up to 100 mM were produced with a maximum osmolarity of 500 mOsm. The content of lens water remained constant in all media even though the content of potas...

The effect of potassium supplements was studied in 28 patients taking long term frusemide (40-80 mg daily). Plasma potassium fell when supplements were stopped, and rose towards prior values on the potassium/frusemide combination, Diumide K. In a crossover study in 14 of these patients comparing equivalent doses of frusemide, Diumide K (frusemide 40 mg, potassium 8 mmol), bumetanide, and Burine...

A model has been used to simulate potassium (K) uptake by wheat in a pot culture experiment. Three soils from India, namely Alfisol, Inceptisol and Vertisol, were differentially K exhausted by Sudan grass (Surghum vulgare var. Sudanensis) for a period of 280 days and were used to simulate potassium uptake by wheat (Triticum aestivum) and also to predict the amounts of K released or fixed during...