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. 2012 Jun;37(2):74–91.

Table 2:

The grading of clinical severity of organophosphate poisoning

Grade Symptoms Signs
Mild Dizziness, anxiety, headache, tightness of breath Rhinorrhea, sweating, salivation, nausea, weakness, coughing, lacrimation, mild bradycardia and Hypotension
Moderate Restlessness, confusion, dyspnea, disorientation, abdominal pain, vomiting, diarrhea, drowsiness Pallor, meiosis/mydriasis*, bradycardia/ tachycardia, hypertension/hypertension*, muscle twitching, fasciculation, respiratory depression, bronchorrhea, bronchospasm, loss of consciousness
Severe ___ Convulsions, respiratory failure, pulmonary edema, flaccid paralysis, involuntary micturation/defecation Cyanosis, deep coma
Fatal ___ Coma, convulsions, hyper secretions and apnea within a few minute after exposure

*Depending on the muscarinic or nicotinic syndrome domination, miosis or mydriasis, bradycardia or tachycardia, hypertension or hypertension may occur. Moderate: Worsening of the above features plus the followings; Severe: Worsening of the above features plus the followings