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J B Gouyon - One of the best experts on this subject based on the ideXlab platform.

Soraya Abbasi - One of the best experts on this subject based on the ideXlab platform.

Francesco Bonsante - One of the best experts on this subject based on the ideXlab platform.

Mika Matikainen - One of the best experts on this subject based on the ideXlab platform.

  • water and Electrolyte Balance after ileoanal anastomosis
    Diseases of The Colon & Rectum, 1991
    Co-Authors: Juhani Santavirta, A L Karvonen, Aimo Harmoinen, Mika Matikainen
    Abstract:

    Water and Electrolyte Balance was studied in 30 patients with ileoanal anastomosis and J pouch, 10 patients with conventional ileostomy, and nine nonoperated patients with quiescent ulcerative colitis. Serum Electrolyte concentrations, daily urinary volume, and daily losses of sodium, potassium, and chloride were measured in all patients. Daily fecal weight and daily losses of sodium and potassium were analyzed in patients with ileoanal anastomosis or conventional ileostomy. Serum chloride in patients with ileoanal anastomosis was significantly lower (P<0.05) than in those with conventional ileostomy or in nonoperated patients. Daily urinary loss of sodium in nonoperated patients was significantly higher than in patients with ileoanal anastomosis(P<0.01) or conventional ileostomy (P<0.05). Daily urinary loss of chloride in patients with ileoanal anastomosis was significantly lower (P<0.05) than in nonoperated patients. Daily fecal loss of potassium in patients with ileoanal anastomosis was significantly higher (P<0.05) than in those with conventional ileostomy. Daily urinary volume and fecal weight did not differ significantly in patients with ileoanal anastomosis or conventional ileostomy. The present study indicates that changes in water and sodium Balance after ileoanal anastomosis are similar to those after conventional ileostomy but chloride Balance is more altered after ileoanal anastomosis.

  • Water and Electrolyte Balance after ileoanal anastomosis
    Diseases of The Colon & Rectum, 1991
    Co-Authors: Juhani Santavirta, A L Karvonen, Aimo Harmoinen, Mika Matikainen
    Abstract:

    Water and Electrolyte Balance was studied in 30 patients with ileoanal anastomosis and J pouch, 10 patients with conventional ileostomy, and nine nonoperated patients with quiescent ulcerative colitis. Serum Electrolyte concentrations, daily urinary volume, and daily losses of sodium, potassium, and chloride were measured in all patients. Daily fecal weight and daily losses of sodium and potassium were analyzed in patients with ileoanal anastomosis or conventional ileostomy. Serum chloride in patients with ileoanal anastomosis was significantly lower (P

Lewis J. James - One of the best experts on this subject based on the ideXlab platform.

  • fluid and Electrolyte Balance during 24 hour fluid and or energy restriction
    International Journal of Sport Nutrition and Exercise Metabolism, 2013
    Co-Authors: Lewis J. James, Susan M. Shirreffs
    Abstract:

    Weight categorized athletes use a variety of techniques to induce rapid weight loss (RWL) in the days leading up to weigh in. This study examined the fluid and Electrolyte Balance responses to 24-hr fluid restriction (FR), energy restriction (ER) and fluid and energy restriction (F+ER) compared with a control trial (C), which are commonly used techniques to induce RWL in weight category sports. Twelve subjects (six male, six female) received adequate energy and water (C) intake, adequate energy and restricted water (~10% of C; FR) intake, restricted energy (~25% of C) and adequate water (ER) intake or restricted energy (~25% of C) and restricted (~10% of C) water intake (F+ER) in a randomized counterBalanced order. Subjects visited the laboratory at 0 hr, 12 hr, and 24 hr for blood and urine sample collection. Total body mass loss was 0.33% (C), 1.88% (FR), 1.97% (ER), and 2.44% (F+ER). Plasma volume was reduced at 24 hr during FR, ER, and F+ER, while serum osmolality was increased at 24 hr for FR and F+ER and was greater at 24 hr for FR compared with all other trials. Negative Balances of sodium, potassium, and chloride developed during ER and F+ER but not during C and FR. These results demonstrate that 24 hr fluid and/ or energy restriction significantly reduces body mass and plasma volume, but has a disparate effect on serum osmolality, resulting in hypertonic hypohydration during FR and isotonic hypohydration during ER. These findings might be explained by the difference in Electrolyte Balance between the trials.

  • Fluid and Electrolyte Balance during 24-hour fluid and/or energy restriction.
    International journal of sport nutrition and exercise metabolism, 2013
    Co-Authors: Lewis J. James, Susan M. Shirreffs
    Abstract:

    Weight categorized athletes use a variety of techniques to induce rapid weight loss (RWL) in the days leading up to weigh in. This study examined the fluid and Electrolyte Balance responses to 24-hr fluid restriction (FR), energy restriction (ER) and fluid and energy restriction (F+ER) compared with a control trial (C), which are commonly used techniques to induce RWL in weight category sports. Twelve subjects (six male, six female) received adequate energy and water (C) intake, adequate energy and restricted water (~10% of C; FR) intake, restricted energy (~25% of C) and adequate water (ER) intake or restricted energy (~25% of C) and restricted (~10% of C) water intake (F+ER) in a randomized counterBalanced order. Subjects visited the laboratory at 0 hr, 12 hr, and 24 hr for blood and urine sample collection. Total body mass loss was 0.33% (C), 1.88% (FR), 1.97% (ER), and 2.44% (F+ER). Plasma volume was reduced at 24 hr during FR, ER, and F+ER, while serum osmolality was increased at 24 hr for FR and F+ER and was greater at 24 hr for FR compared with all other trials. Negative Balances of sodium, potassium, and chloride developed during ER and F+ER but not during C and FR. These results demonstrate that 24 hr fluid and/ or energy restriction significantly reduces body mass and plasma volume, but has a disparate effect on serum osmolality, resulting in hypertonic hypohydration during FR and isotonic hypohydration during ER. These findings might be explained by the difference in Electrolyte Balance between the trials.

  • Fluid and Electrolyte Balance during dietary restriction
    2012
    Co-Authors: Lewis J. James
    Abstract:

    It is known that during fluid restriction, obligatory water losses continue and hypohydration develops and that restricted energy intake leads to a concomitant restriction of all other dietary components, as well as hypohydration, but the specific effects of periods of fluid and/ or energy restriction on fluid Balance, Electrolyte Balance and exercise performance have not been systematically described in the scientific literature. There were two main aims of this thesis. Firstly, to describe the effects of periods of severe fluid and/ or energy restriction on fluid and Electrolyte Balance; secondly, to determine the effect of Electrolyte supplementation during and after energy restriction on fluid and Electrolyte Balance as well as energy exercise performance. The severe restriction of fluid and/ or energy intake over a 24 h period all resulted in body mass loss (BML) and hypohydration, but whilst serum osmolality increases during fluid restriction (hypertonic hypohydration), serum osmolality does not change during energy restriction (isotonic hypohydration), despite similar reductions in plasma volume (Chapter 3). These differences in the tonicity of the hypohydration developed are most likely explainable by differences in Electrolyte Balance, with fluid restriction resulting in no change in Electrolyte Balance over 24 h (Chapter 3) and energy restriction (with or without fluid restriction) producing significant reductions in Electrolyte Balance by 24 h (Chapter 3; Chapter 4; Chapter 5; Chapter 6; Chapter 7). Twenty four hour combined fluid and energy restriction results in large negative Balances of both sodium and potassium, and whilst the addition of sodium chloride to a rehydration solution ingested after fluid and energy restriction increases drink retention, the addition of potassium chloride to a rehydration solution does not (Chapter 4). Supplementation of sodium chloride and potassium chloride during periods of severe energy restriction reduces the BML observed during energy restriction and maintains plasma volume at pre-energy restriction levels (Chapter 5; Chapter 6; Chapter 7). iv These responses to Electrolyte supplementation during energy restriction appear to be related to better maintenance of serum osmolality and Electrolyte concentrations and a consequential reduction in urine output (Chapter 5; Chapter 6; Chapter 7). Additionally, 48 h energy restriction resulted in a reduction in exercise capacity in a hot environment and an increase in heart rate and core temperature during exercise, compared to a control trial providing adequate energy intake. Whilst Electrolyte supplementation during the same 48 h period of energy restriction prevented these increases in heart rate and core temperature and exercise capacity was not different from the control trial Chapter 8). In conclusion, 24-48 h energy restriction results in large losses of sodium, potassium and chloride in urine and a large reduction in body mass and plasma volume and supplementation of these Electrolytes during energy restriction reduces urine output, attenuates the reduction in body mass and maintains plasma volume and exercise capacity.