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An antibiotic was infused with a 40-mg IV dose over 2 hours. Ten hours later, a second dose of 40 mg was infused, again over 2 hours. (a) What is the plasma drug concentration 2 hours after the start of the first infusion? (b) What is the plasma drug concentration 5 hours after the second dose infusion was started? Assume k = 0.2 hr-?, V= 10 L for the antibiotic.
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