THIRST Dotaz Zobrazit nápovědu

Well defined dry weight is a must for adequate UF control during haemodialysis (HD). However, interdialytic weight gain (delta BW) must not be excessive. delta BW is closely related to interdialytic thirst which in turn is strongly influenced by post-dialysis plasma sodium (CPNa post), but little is known about the desired CPNa post. The points below serve as a basis for establishing this value. a) Thirst is mediated by osmoreceptors. b) A strong correlation has been found between delta BW and intradialytic increase in plasma sodium but no such correlation exists with the interdialytic increase in plasma urea. This indicates that fluid intake between dialyses depends solely on electrolytes. c) Pre-dialysis plasma sodium in an individual is stable, indicating that the patient is at his "set value" of electrolyte osmolality. d) Half of the potassium removed during HD comes from the extra- and half from the intracellular space. Assuming that it is desirable not to disturb a patient's pre-dialysis osmotic steady state, it can be calculated that the desired CPNa post should be higher than the pre-dialysis value by half of the intradialytic plasma potassium drop, i.e., approx. CPNa post = CPNa pre + 1 to 2 mmol/l.

Článek

Antidiuretic activity of the plasma and posterior pituitary lobe during ontogenesis in the dog

Physiologia bohemoslovenica. 1961 ; 10 () : 522-8.

Physiol Bohemoslov (1956)
Physiologia bohemoslovenica | Physiol Bohemoslov (1956)
Zdroj

Klíčová slova
AGING *, DIURESIS/physiology *, PITUITARY GLAND, POSTERIOR/physiology *, THIRST/physiology *,
MeSH
diuréza fyziologie MeSH
hypofýza * MeSH
psi MeSH
stárnutí * MeSH
zadní lalok hypofýzy fyziologie MeSH
žízeň fyziologie MeSH
zvířata MeSH
Check Tag
psi MeSH
zvířata MeSH
Publikační typ
časopisecké články MeSH

Článek

Poruchy vodní a iontové rovnováhy ve stáří
[Electrolyte and water disorders in old age]

Treatment with sedatives also suppresses the feeling of thirst, which results in rapid development of ...

Vnitrni lekarstvi. 2018 Winter ; 64 (11) : 1059-1066.

Vnitr Lek
ISSN 0042-773X
Zdroj

Changes in the volume and composition of body fluids are among the essential and limiting parameters both in health and illness. These parameters gain in importance with increasing age. Within the concept of a geriatric patient, disturbances in water and mineral metabolism are the cause of circulatory collapse, stroke, and further instability, falls and delirium. The body can, in the broad range of balance within internal environment, compensate for variations, however always for a limited length of time only, and this compensation ability decreases in particular in older age. Maintaining of water and mineral balance in the elderly is also complicated by polymorbidity. Frequent occurrence of cardiovascular diseases and decline in renal functions later in life results in reduced compensation abilities, which status must be rigorously considered. Besides polymorbidity, also polypragmasia in pharmacotherapy is very frequently encountered in relation to age-related disorders of water and electrolyte handling. Treatment with sedatives also suppresses the feeling of thirst, which results in rapid development of disturbances in water and mineral balance even after small insults, such as feverish illnesses and minor injuries. The knowledge of differences in diagnosing and treatment of water and ion imbalances in later life is becoming increasingly important, espe-cially with regard to the increasing share of older people in society. Key words: ageing - dehydration - electrolyte metabolism - mineral disorders.

Klíčová slova
ageing - dehydration - electrolyte metabolism - mineral disorders,
MeSH
dehydratace MeSH
lidé MeSH
senioři MeSH
vodní a elektrolytová nerovnováha * MeSH
vodní a elektrolytová rovnováha * MeSH
žízeň MeSH
Check Tag
lidé MeSH
senioři MeSH
Publikační typ
časopisecké články MeSH

Publikováno

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THIRST Dotaz Zobrazit nápovědu

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