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Unconsciousness (Endogenous Causes (Neurological (*CNS involvement*…
Unconsciousness
Main presenting symptom
35yo male, unconscious on sofa at local pub
Exogenous Causes
Due to
Toxins
Includes
Lead
Cyanide
Methanol
Carbon monoxide
Due to
Drugs
Classified as
Depressants
Includes
Opioids, heroin
Alcohol
Barbiturates
Sedatives
causes
CNS depression
Classified as
Stimulants
Includes
amphetamine
Cocaine
Ecstasy/MDMA
Causes
Cardiotoxicity
Endogenous Causes
Neurological
*CNS
involvement*
Brain
Raised intracranial pressure due to
Space occupying lesions
Tumour
abscess
Vascular problems
Stroke
Includes
Hemorrhagic stroke
Ischemic stroke
Thrombotic
Embolic
consider
TIA
if <1hr
due to ext force applied
Trauma
results in
Hemorrhage
includes
4 more items...
Causes
1 more item...
Pathogen involvement
Infection
Meningitis
Encephalitis
Neuronal activity defects
Seizures
*PNS
involvement*
Guillain Barre Syndrome
diagnose by exclusion
Psychogenic
includes
Catatonia
Psychogenic pseudosyncope
involving other parts of the body
Systemic
Organ failure
CV
Pump failure
Myocardial infarction
heart failure
arrhythmia
Respiratory
Respiratory failure
Lung failure (Gas exchange failure)
Hypercapnic
Pump failure (Ventilatory failure)
Hypoxemic
GI
Liver disease leads to
Hepatic encephalopathy
Renal
Kidney defect leads to
Uremia
Endocrine/Metabolic
Diabetic complications
due to either
hypoglycemia
hyperglycemia
includes
Diabetic ketoacidosis
Hyperosmolar hyperglycemic nonketotic coma
Hormonal imbalance
hyperthyroidism
(Myxedema)
addisonian crisis
Electrolyte imbalance
Hyper/hypo
Ca2+
Hyper
Mg2+
Hyper
Na+
can be due to
medications
(e.g diuretics)
dehydration