776. Atropine toxicity symptoms include hot as a hare (temperature), mad as a hatter (confusion and delirium), red as a beet (flushed face), dry as a bone (decrease secretions, thirsty).
777. Potassium is necessary for nerve impulses, conduction, and heart excitation.
778. ASA toxic levels for 30 lb child = 12 adult tablets (325 mg), or 48 tablets (81 mg).
779. Toxic levels of Li = 2 mEq/L digoxin = 2 ng/ml, and theophylline 20 mcg/ml. Li therapeutic levels 0.8-1.4 mEq/L (sodium depletion is the main cause), digoxin 0.5-0.8 ng/ml (hypokalemia), and theophylline (5-15 mcg/mL).
780. Vitamin B6 antagonizes the effect of levodopa. INH and alcohol cause deficiency of vitamin B6.
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