FIELD: medicine.
SUBSTANCE: compression water load (pressure chamber immersion at a depth of 60 metres and staying there for 1.5 hours) in dosage 20 ml per one kg of body weight is followed by calculating a renal functional activity index (RFAI) by formula: RFAI=0.1N1+0.4D1+0.2D2+0.1N2-0.1K+0.1Chl, where: N1 is the amount of sodium discharged by kidneys on the 60th minute after the water load (mmol/hour); D1 is the amount of discharged urine on the 60th minute after the water load (ml/min); D2 is the amount of discharged on the 90th minute after the water load (ml/min); N2 is the amount of sodium discharged by kidneys on the 90th minute after the water load (mmol/hour); K is the amount of potassium discharged by kidneys on the 90th minute after the water load (mmol/hour); Chl is the amount of discharged chlorine on the 90th minute after the water load (mmol/hour). If the RFAI value is 5.7 or more, excretory and concentration renal function is considered to be satisfactory, and the RFAI value less than 5.7 shows unsatisfactory function.
EFFECT: method can be used in practice of scuba diving physiology and diving medicine for estimation of excretory and concentration renal functions of a person in high pressure gas medium.
