Five young unacclimatised subjects were exposed for 4 h at 34 degrees C (10 degrees C dew-point temperature and 0.6 m X s-1 air velocity), while exercising on a bicycle ergometer: 25 min work--5 min rest cycles for 2 hours followed by 20 min work--10 min rest cycles for two further hours. 5 experimental sessions [...]
Dehydration is a serious risk for elders because total body water decreases with age, aging kidneys are less able to concentrate urine, and the sensation of thirst decreases. Geriatric nurses traditionally have assessed for dehydration, but its signs are difficult to detect in many patients. Instead, nurses, assistive personnel, and family members must work to [...]
Our objective was to determine the ability of several clinical signs of dehydration to distinguish among degrees of dehydration in infants with acute diarrhea. The design was a prospective cohort study in a pediatric referral hospital in Cairo, Egypt. Infant boys, 3-18 months old, with a history of acute diarrhea (5 or more watery stools [...]
OBJECTIVE: To investigate the state of hydration in infants during the weaning period in dry and hot climates in the center of Iran. METHODS: Using a refractometer, 162 urine specific gravity (USG) was measured from 400 infants, between 4 to 6 months old. They were chosen among infants who visited the primary clinics in the [...]
Five cases of moderately severe hypernatraemic dehydration were identified within a 5-month period between two regional hospitals in Hong Kong. Unlike previous reported cases, these exclusively breast-fed infants presented with the unusual triad of fever, absence of overt signs of dehydration and within the first week of life. Three of the cases also had high [...]
This review covers published literature on the influence of whole-body hydration status on exercise performance. The majority of information in this area relates to endurance exercise performance, but information on power, strength, and sporting skills has also been investigated. These areas form the focus of the current review. It is apparent that some individuals can [...]
Disorders of water and sodium homeostasis are very common problems encountered in clinical medicine. Disorders of water metabolism are divided into hyperosmolar and hypoosmolar states, with hyperosmolar disorders characterized by a deficit of body water in relation to body solute and hypoosmolar disorders characterized by an excess of body water in relation to total body [...]
Recent reports have documented the potentially catastrophic consequences of dehydration induced by vigorous exercise in otherwise healthy individuals. A case of acute pancreatitis secondary to exercise-induced dehydration is presented, and the literature of dehydration-induced syndromes, both research and clinical, is reviewed. The goal of this case report is to heighten awareness of dehydration as a [...]
There is increasing evidence that mild dehydration plays a role in the development of various morbidities. In this review, the effects of hydration status on chronic diseases are categorized according to the strength of the evidence. Positive effects of maintenance of good hydration are shown for urolithiasis (category lb evidence); constipation, exercise asthma, hypertonic dehydration [...]
Vasopressin is a critical regulator of water homeostasis. There are two major receptors for vasopressin: V1 and V2 receptors. Disturbances in water balance are commonly encountered in clinical practice and can be divided into disorders of urinary dilution and concentration. The major representatives of such disorders are diabetes insipidus and the syndrome of inappropriate secretion [...]