graph TD
classDef start fill:#1b5e20,color:#ffffff,stroke:#66bb6a;
classDef step fill:#0d47a1,color:#ffffff,stroke:#42a5f5;
classDef decision fill:#4a148c,color:#ffffff,stroke:#ab47bc;
classDef alert fill:#b71c1c,color:#ffffff,stroke:#ef5350;
A(<b>Unconscious Child</b><br>ABCDE Stabilization):::start
B{<b>Airway Risk</b><br>GCS le 8}:::decision
C{<b>Circulation</b><br>Shock Signs}:::decision
D{<b>Hypoglycemia</b><br>Glucose lt 50}:::decision
E{<b>Neurology</b><br>Raised ICP}:::decision
B1[<b>Intubate</b><br>Secure Airway]:::alert
C1[<b>IV Fluids</b><br>and Inotropes]:::step
D1[<b>IV Dextrose</b><br>10 Dextrose]:::step
E1[<b>Hyperosmolar</b><br>Mannitol or Saline]:::alert
F(<b>Secondary Survey</b><br>Labs and CT Head):::step
G{<b>CNS Infection</b><br>Suspected}:::decision
H{<b>Active Seizure</b><br>Observed}:::decision
G1[<b>Empiric Therapy</b><br>Antibiotics Antivirals]:::step
H1[<b>Anti-seizure Meds</b><br>Lorazepam Phenytoin]:::alert
I(<b>Targeted Care</b><br>Based on Etiology):::start
A --> B
A --> C
A --> D
A --> E
B -->|Yes| B1
C -->|Yes| C1
D -->|Yes| D1
E -->|Yes| E1
B -->|No| F
C -->|No| F
D -->|No| F
E -->|No| F
B1 --> F
C1 --> F
D1 --> F
E1 --> F
F --> G
F --> H
G -->|Yes| G1
H -->|Yes| H1
G -->|No| I
H -->|No| I
G1 --> I
H1 --> I
Definition And Pathophysiology
Coma Represents Medical Emergency Defined As State Of Unarousable, Sustained Pathologic Unresponsiveness.
Characterized By Complete Loss Of Arousal And Awareness Lasting Minimum One Hour.
Ascending Reticular Activating System Maintains Arousal.
Frontoparietal Networks And Thalamus Maintain Awareness.
Disruption In Either Pathway Results In Impaired Consciousness.
Initial Rapid Triage
Utilize AVPU Scale During Disability Step Of Primary Assessment Pentagon.
Serves As Rapid, Objective Clinical Scoring Tool To Evaluate Depth Of Consciousness.
Abnormal Score Necessitates Immediate Checking Of Blood Glucose To Rule Out Hypoglycemia.
Scale Component
Neurological Response
Alert
Fully Awake, Aware Of Environment, Interacts Appropriately.
Voice
Responds Directly To Vocal Stimuli Or Verbal Commands.
Pain
Exhibits Localizing, Withdrawing, Or Abnormal Posturing To Noxious Stimuli.
Unresponsive
Exhibits Absolutely No Response To Voice Or Painful Stimuli.
Differential Diagnosis
Etiology Broadly Categorized Based On Primary Site Of Insult.
Include Serum Electrolytes, Renal Function Tests, And Liver Function Tests.
Obtain Blood Cultures, Malaria Rapid Diagnostic Tests, Peripheral Smears, And Tropical Fever Serology In Febrile Children.
Evaluate Urine Dipstick For Ketones And Reducing Sugars.
Neuroimaging And Lumbar Puncture
Perform Non-Contrast Computed Tomography Head Rapidly To Detect Hemorrhage Or Cerebral Edema.
Perform Lumbar Puncture For Suspected Central Nervous System Infections.
Defer Lumbar Puncture If Raised Intracranial Pressure, Hemodynamic Instability, Focal Deficits, Or Thrombocytopenia Present.
Second-Line Diagnostics
Utilize Magnetic Resonance Imaging For Stroke, Acute Disseminated Encephalomyelitis, Or Herpes Simplex Encephalitis.
Obtain Electroencephalogram To Rule Out Non-Convulsive Status Epilepticus.
Send Metabolic Testing Including Blood Ammonia And Tandem Mass Spectrometry For Unexplained Comas.
Emergency Stabilization And Management
Resuscitation Priorities
Airway: Maintain Patency Through Positioning Or Suctioning. Intubate Strictly For Glasgow Coma Scale Less Than 8, Impaired Reflexes, Apnea, Or Impending Herniation.
Breathing: Maintain Oxygen Saturation Greater Than 92%. Provide Mechanical Ventilation If Central Hypoventilation Present.
Circulation: Establish Immediate Intravenous Access. Treat Shock With 20 ml/kg Normal Saline Bolus. Initiate Vasopressors If Refractory.
Disability: Treat Blood Glucose Less Than 50 mg/dl With 2 ml/kg 10% Dextrose Bolus. Follow With Continuous Glucose Infusion At 6-8 mg/kg/min.
Neuroprotection And Intracranial Pressure Management
Maintain Head Midline With Bed Elevated 15-30 Degrees To Promote Venous Drainage.
Administer 20% Mannitol Bolus 0.25-1 g/kg Or 3% Hypertonic Saline To Reduce Cerebral Edema.
Initiate Short-Term Hyperventilation Targeting PaCO2 30-35 mmHg Only For Impending Herniation.
Treat Seizures Immediately With Intravenous Lorazepam Or Diazepam.
Load Intravenous Phenytoin 20 mg/kg To Prevent Secondary Brain Injury.
Treat Fever Aggressively With Antipyretics And Cooling Measures To Prevent Increased Cerebral Metabolism.
Specific Pharmacological Interventions
Clinical Suspicion
Targeted Empiric Therapy
Acute Meningitis
Intravenous Ceftriaxone Combined With Vancomycin.
Herpes Encephalitis
Intravenous Acyclovir 10-15 mg/kg/dose Every 8 Hours.
