Epistemis

Emergencies: Altered Level of Consciousness — Emergency Medicine

Emergency Room · Clinical Specialties

How it begins

Un análisis exhaustivo y riguroso de los mecanismos fisiopatológicos, semiología, aproximación diagnóstica multimodal y estrategias de intervención crítica para el paciente con afectación aguda del nivel de alerta en el departamento de urgencias.

What it covers

  1. Alteration of the Level of Consciousness
  2. Anatomy and Physiology of Consciousness
  3. · The Ascending Reticular Activating System (SARA)
  4. · Neurotransmission Systems Alert Regulators
  5. · The Cerebral Cortex and Functional Connectivity Networks
  6. Definitions and Semiological Classification
  7. · Qualitative States of Consciousness
  8. · Clinical Syndromes of Dissociation of Consciousness
  9. Epidemiology and Initial Approach in Emergencies
  10. · Global Etiological Distribution
  11. Pathophysiology of Diffuse Brain Dysfunction and ICH
  12. · The Monro-Kellie Doctrine
  13. · Autoregulation and Cerebral Perfusion Pressure (CPP)
  14. · Types of Cerebral Edema
  15. Structural Commas vs. Metabolic
  16. · Mechanisms of Brain Herniation
  17. · Diffuse Axonal Damage (DAD)
  18. · Pathophysiology of Metabolic and Toxic Coma
  19. Ion Channels and Neurotransmission in Coma
  20. · The Excitotoxic Glutamate Cascade
  21. · GABAergic hyperstimulation and Neurosteroids
  22. · The Mitochondrial Energy Failure Hypothesis
  23. Clinical Evaluation and Severity Scales
  24. · The Glasgow Coma Scale (GCS) and its Evolution
  25. · The FOUR Scale (Full Outline of UnResponsiveness)
  26. · Respiratory Patterns and Their Injury Location Value
  27. Neurological Examination of Coma in the Emergency Room
  28. · 1. Detailed Pupillary Examination
  29. · 2. Exploration of Brain Stem Reflexes
  30. · 3. Pathological Motor Responses (Postures)
  31. Etiological Diagnosis and Approach Algorithm
  32. · Universal Mnemonics: AEIOU-TIPS
  33. Complementary Tests and Neuroimaging
  34. · 1. Simple Cranial Computed Tomography (CT)
  35. · 2. Lumbar Puncture (LP) in Emergencies
  36. · 3. Electroencephalography (EEG) in Emergencies
  37. Initial and Life Support (ABCDE) in the Comatose Patient
  38. · The Golden Rule: Protect the Airway (GCS ≤ 8)
  39. · Control of Physiological Constants (Avoid Secondary Damage)
  40. Surgical and Structural Management of Intracranial Hypertension
  41. · Urgent Medical Strategies for ICP Reduction
  42. · Indications for Emergency Neurosurgical Intervention
  43. Directed Treatment of Metabolic and Toxic Causes
  44. · 1. Severe Hepatic Encephalopathy (Grade III - IV)
  45. · 2. Uremic Encephalopathy and Cardiorenal Syndrome
  46. · 3. Diabetic Ketoacidosis (DKA) and Hyperosmolar State (HHS)
  47. · 4. Specific Antidotes in Acute Poisoning
  48. Brain Death and Coma Prognosis
  49. · Definition and Absolute Prerequisites
  50. · The Clinical Exploration of Brain Death
  51. · Instrumental Confirmation Methods

The complete study guide is in the app

This page summarizes the outline. The full interactive study guide —with high-yield diagrams, clinical tables, and board review cases— can be read inside Epistemis, completely offline and ad-free.

Subject
Emergency Room
Category
Clinical Specialties
Type
Study Guide
Sections
51
Reviewed
2026-08-02
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