Local anesthetics with epinephrine are contraindicated in cocaine users as it can lead to myocardial infarction or cerebrovascular accident

Which of the following statements is TRUE?

A) Absorption means that most medications whether unchanged or metabolized are excreted in the urine. B) Affinity is the process of chemically changing a medication through metabolism within the body. C) Therapeutic index is a ratio comparing a medication's lethal dose with an effective dose of the same medication. D) Half-life is the degree or rate at which a drug or other substance becomes available at the site of physiological activity after administration.

Pneumonia due to e. coli

A) 482.81 B) 482.82 C) 482.83 D) 482.84