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Related Concept Videos

Hyperosmolar Hyperglycemic State01:21

Hyperosmolar Hyperglycemic State

Hyperosmolar Hyperglycemic State, or HHS, is a serious and life-threatening complication of type 2 diabetes mellitus. It is characterized by three main features: severe hyperglycemia, profound dehydration, and elevated serum osmolality, all occurring without significant ketoacidosis.HHS typically develops in older adults or individuals with limited access to fluids. This may result from illness, cognitive impairment, or medications such as diuretics or corticosteroids. These factors reduce...
Disorder of Water Balance01:29

Disorder of Water Balance

Water balance disorders are medical conditions that occur when there is a deviation from the body's water volume or osmolarity, disrupting normal homeostasis and leading todehydration, hypotonic hydration, hyperhydration, edema, or water intoxication.
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
Regulation of Water Intake01:25

Regulation of Water Intake

Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
Diabetes Insipidus II: Pathophysiology01:22

Diabetes Insipidus II: Pathophysiology

Normally, water balance is maintained through three interconnected mechanisms: the hypothalamic thirst center, the synthesis and release of antidiuretic hormone (ADH, or vasopressin), and the kidneys' responsiveness to this hormone. ADH is synthesized in the hypothalamus, released from the posterior pituitary, and acts on the distal nephron, allowing water reabsorption and concentrated urine production.Diabetes Insipidus and Its TypesIn diabetes insipidus (DI), this regulatory system is...
Diabetes Insipidus I: Introduction01:29

Diabetes Insipidus I: Introduction

Definition Diabetes insipidus is a disorder marked by the production of large amounts of dilute urine because of impaired vasopressin production, release, or kidney response. The lack of effective vasopressin action limits water reabsorption in the renal collecting ducts, which leads to excessive urinary water loss and intense thirst.Clinical PresentationIndividuals with diabetes insipidus report persistent thirst and very high urine output. In severe cases, fluid intake can reach up to 20...
Formation of Concentrated Urine01:23

Formation of Concentrated Urine

There is a gradient of solutes in the interstitial fluid from the renal cortex through the medulla, known as the medullary osmotic gradient. The juxtamedullary nephrons establish and maintain this gradient using countercurrent mechanisms with loops extending deep into the medulla. These nephrons also use countercurrent mechanisms to regulate urine volume and concentration. The interaction between the descending and ascending limbs of the nephron loop creates an osmotic gradient through...

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Related Experiment Video

Updated: Jun 13, 2026

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
04:12

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

Published on: March 28, 2025

Severe hypernatremic dehydration in a newborn infant.

R G Smith1

  • 1Consultant Pediatrician, Chatham, Ontario.

Paediatrics & Child Health
|April 20, 2010
PubMed
Summary

A newborn female infant experienced severe hypernatremic dehydration and failure to thrive. Prompt diagnosis and management are crucial, emphasizing the need for postnatal support for newborns after early discharge.

Area of Science:

  • Neonatology
  • Pediatric Endocrinology
  • Clinical Pediatrics

Background:

  • Severe hypernatremic dehydration is a critical condition in neonates.
  • Failure to thrive (FTT) in infants requires thorough investigation.
  • Early discharge of newborns necessitates robust follow-up protocols.

Observation:

  • A female infant presented with severe hypernatremic dehydration and FTT two weeks postpartum.
  • Clinical presentation indicated significant fluid and electrolyte imbalance.
  • The infant's condition necessitated immediate diagnostic and therapeutic interventions.

Findings:

  • Diagnosis involved identifying the underlying causes of hypernatremia and FTT.
  • Management focused on gradual rehydration and addressing nutritional deficits.
Keywords:
DehydrationEarly dischargeEscherichia coliFailure to thriveNeonatesSepsis

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A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis

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Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
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A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
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A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis

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  • Successful treatment required a multidisciplinary approach.

    • Implications:

    • Highlights the importance of vigilant monitoring for dehydration in neonates.
    • Underscores the critical role of comprehensive parental education and support.
    • Emphasizes the need for structured follow-up care pathways for high-risk newborns post-discharge.