A blood or urine test to diagnose overdose is not generally available. CCB overdose may cause high blood sugar levels, and this is often a sign of how severe the problem will become. Electrocardiogram CCB toxicity can cause a number of electrocardiogram abnormalities with a low sinus rhythm being the most common. Others include: QT prolongation, bundle branch block, first-degree atrioventricular block, and even sinus tachycardia. Differential It may not be possible to tell the difference between beta<unk>  toxicity and<unk><unk><unk>  overdose based on signs and symptoms.
Calcium channel blocker toxicity
Beta blocker
Organophosphate-induced delayed neuropathy
Electrolyte exclusion effect
Digoxin toxicity
Opioid-induced endocrinopathy
Drug-induced hyperthermia
Hypokalemic sensory overstimulation