Biological variation and diagnostic accuracy of dehydration assessment markers.

BACKGROUND: Well-recognized markers for static (one time) or dynamic (monitoring over time) dehydration assessment have not been rigorously tested for their usefulness in clinical, military, and sports medicine communities. OBJECTIVE: This study evaluated the components of biological variation and the accuracy of potential markers in plasma, urine, saliva, and body mass (B(m)) for static and dynamic dehydration assessment. DESIGN: We studied 18 healthy volunteers (13 men and 5 [...]

By |2017-05-21T03:19:30+00:00enero 31st, 2013|Documentos científicos, Electrolytes, hyponatraemia|Comentarios desactivados en Biological variation and diagnostic accuracy of dehydration assessment markers.

Voluntary dehydration among elementary school children residing in a hot arid environment

BACKGROUND: Voluntary dehydration is a condition where humans do not drink appropriately in the presence of an adequate fluid supply. This may adversely affect their physical and intellectual performance. The present study aimed to describe the prevalence of voluntary dehydration among elementary school children of different ethnicities and countries of birth. METHODS: Four hundred and twenty-nine elementary school children; aged 8-10 years; from four subpopulations (Israeli-born Jewish [...]

By |2017-05-21T03:19:30+00:00enero 31st, 2013|Behaviour: knowledge, understanding and attitudes of the population, Documentos científicos|Comentarios desactivados en Voluntary dehydration among elementary school children residing in a hot arid environment

Diarrhoea in the critically ill

PURPOSE OF REVIEW: The purpose of this review is to update the knowledge on diarrhoea, a common problem in critically ill patients. Epidemiological data will be discussed, with special emphasis on diarrhoea in tube-fed patients and during antibiotic therapy. The possible preventive and therapeutic measures will be presented. RECENT FINDINGS: The need for concise definitions of diarrhoea was recently re-emphasized. The use [...]

By |2017-05-21T03:20:40+00:00enero 31st, 2013|Documentos científicos, Regulation of water and electrolyte balance|Comentarios desactivados en Diarrhoea in the critically ill

Fluid balance in elderly patients following stroke.

We studied the relationship between plasma osmolality, arginine vasopressin (AVP), and fluid input in patients during the acute phase of a first stroke. Fifteen consecutive patients were studied (median age 79) and their blood sampled on days 0, 1, 2, 3, 7 and 14. Plasma osmolality was related to fluid input over days 0-3 (p = 0.0013) and AVP over 14 days (p less [...]

By |2017-05-21T03:20:42+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Fluid balance in elderly patients following stroke.

Urine test strips: how reproducible are readings?

In an experiment, multiple reagent test strips from 90 urine samples were examined twice: observed visually by one of two persons and analyzed by spectrophotometry. Interobserver and intra-observer agreement were calculated and expressed as Cohen's K. Interobserver and intra-observer agreement were moderate to good, but lower than one might expect. Enhancing discoloration of the test pads could improve reproducibility. FULL-TEXT AVAILABRLE IN [...]

By |2017-05-21T03:21:05+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Urine test strips: how reproducible are readings?

Comparison between normal saline and a polyelectrolyte solution for fluid resuscitation in severely dehydrated infants with acute diarrhoea

The optimal intravenous solution for rehydration of infants and children with severe dehydration is debated. AIM: The aim was to compare the efficacy of a polyelectrolyte solution (group PS) with sodium chloride 0.9% solution (group NS) in rapid parenteral rehydration of severely dehydrated infants with acute diarrhoea. METHODS: Primary outcomes were volume and time to hydration. Secondary outcomes were urea, creatinine, electrolytes, glucose, arterial pH and bicarbonate levels. Patients were [...]

By |2017-05-21T03:20:40+00:00enero 31st, 2013|Children, Documentos científicos|Comentarios desactivados en Comparison between normal saline and a polyelectrolyte solution for fluid resuscitation in severely dehydrated infants with acute diarrhoea

Influence of raised osmolarity on clinical outcome after acute stroke.

BACKGROUND AND PURPOSE: Abnormal physiological parameters after acute stroke may induce early neurological deterioration. Studies of the effect of dehydration on stroke outcome are limited. We examined the association of raisedplasma osmolality on stroke outcome at 3 months and the change of plasma osmolality with hydration during the first weekafter stroke. METHODS: Acute stroke patients had their plasma osmolality measured at admission and at days 1, 3, [...]

By |2017-05-21T03:20:40+00:00enero 31st, 2013|Documentos científicos, Hydration status of population groups|Comentarios desactivados en Influence of raised osmolarity on clinical outcome after acute stroke.

Dipstick measurements of urine specific gravity are unreliable.

AIM:To evaluate the reliability of dipstick measurements of urine specific gravity (U-SG). METHODS: Fresh urine specimens were tested for urine pH and osmolality (U-pH, U-Osm) by a pH meter and an osmometer, and for U-SG by three different methods (refractometry, automatic readout of a dipstick (Clinitek-50), and (visual) change of colour of the dipstick). RESULTS: The correlations between the visual U-SG dipstick measurements and U-SG determined by a refractometer and the comparison [...]

By |2017-05-21T03:20:41+00:00enero 31st, 2013|Assessment methodologies, Documentos científicos|Comentarios desactivados en Dipstick measurements of urine specific gravity are unreliable.