This mnemonic has been commonly used to recall the non-cardiogenic causes of pulmonary edema:
N – Near drowning
O – oxygen therapy
T – Transfusion related acute lung injury or Trauma
C – CNS (neurogenic pulmonary edema)
A – Acute Respiratory Distress Syndrome, aspiration, altitude (high altitude pulmonary edema or HAPE)
R – renal disorder or fluid resuscitation
D – drug related
I – inhaled toxins
A – allergic alveolitis (aka: hypersensitivity pneumonitis)
C – contrast or pulmonary contusion
Adapted from here.
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