Anemia
Dehydration
Fever
Infection, Sepsis
Anion gap acidosis
Hyperthyroid
Arrhythmia
PE
CHF
MI
Tamponade
Myocardial contusion
Cardiac valvular disease
Hyper/hypoglycemia
Drug intoxication
Drug withdrawal
Toxicity
ASA
TCA
Anticholinergic
Theophylline
Pain
Psych (anger, fear)
ASA
TCA
Anticholinergic
Theophylline
Hyperthyroidism
Anemia
Hypothyroidism
Dehydration
Hyperparathyroidism
Fever
Metabolic syndrome
Infection, Sepsis