Bulletin of the World Health Organization

Acute pesticide poisoning: a proposed classification tool

Josef G Thundiyil, Judy Stober, Nida Besbelli, Jenny Pronczuk

Volume 86, Number 3, March 2008, 205-209

Table 2. Signs and symptoms by organ system and severity category

Organ system Severity of symptoms
Fatal High Moderate Low
Gastrointestinal

Death
Massive haemorrhageGut perforation2nd or 3rd degree burnsSevere dysphagia
DiarrhoeaVomitingBloody stoolsJaundice
Abdominal crampingLoss of appetiteNauseaOral irritationConstipation
Respiratory

Death
Cyanosis and respiratory depressionPulmonary oedemaRespiratory arrest
Diffuse radiographic abnormalitiesPleuritic chest painRespiratory depressionBronchospasmDyspnoea
CoughAirway irritationRhinitisSneezing
Nervous

Death
ComaParalysisSeizureStuporWidespread neurologic impairment
ConfusionHallucinationsBlurred visionAtaxiaSlurred speechSyncopeHearing lossLocalized neuropathy/ paraesthesias
HyperactivityHeadacheProfuse sweatingDizzinessTremorTinnitusDrowsiness
Cardiovascular

Death
Bradycardia: HR < 40 adults, < 60 children, < 80 neonatesTachycardia: HR > 180 adults, > 190 children, > 200 neonatesCardiac arrestMyocardial infarctionShock
Bradycardia: HR 40–50 adults, 60–80 children, 80–90 neonatesTachycardia: HR 140–180 adults, 160–190 children, 160–200 neonatesChest painConduction disturbanceHypertensionHypotension
Isolated extrasystolesMild transient hypertension
Metabolism

Death
Acid/base disturbance (pH < 7.15 or > 7.7)Severe electrolyte imbalance
Elevated anion gapAcidosis (pH 7.15–7.30)Alkalosis (pH 7.60–7.69)
Fever of short durationMild hyperglycaemia
Renal

Death
AnuriaRenal failure
HaematuriaOliguriaProteinuria
Polyuria
Muscular

Death
Muscle rigidity and rhabdomyolysisCompartment syndrome
FasciculationsRigidityWeakness
Muscle weaknessMuscle pain
Dermatologic

Death
Burns: 2nd degree > 50% total BSABurns: 3rd degree of > 2% BSA
BullaeBurns: 2nd degree < 50% BSABurns: 3rd degree of < 2% BSA
Oedema, swelling, Erythema, irritationUrticaria
Ocular

Death
Corneal ulcerCorneal perforationLoss of vision
Corneal abrasionOcular burnVisual changes
LacrimationMydriasisMiosisPain/ conjunctivitis
Other Death FatigueMalaise

BSA, body surface area; HR, heart rate.Based on references 22 and 30.