Which of the following medication can lower seizures threshold?

Number of new cases per population at risk in a given time period is a definition of which of the following?

A physician needs your help to calculate the protamine dose on a patient who started hemorrhaging while on heparin. Patient has been receiving heparin at a dose of 13mls/hr for 2 hrs when the physician decides to use protamine to reverse the heparin. Heparin bag says concentration of 50 units/ml. The half-life of heparin is 60 minutes. 1 mg of protamine reverses 100 units of heparin.
How much protamine should be given to this patient?

A Physician orders amiodarone 1 mg/min for six hours, then 0.5 mg/min thereafter. The patient's weight is
156 lbs. The concentration of the IV bag comes as 1.8 mg per ml. Calculate the infusion rate in mL/hr.

A Physician orders Dobutamine HCl IV infusion at 5 mcg/kg/min. Dobutamine HCl is available as 500 mg in
250 mL of D5W. The patient weighs 68 kg. Calculate the infusion rate in mL/hr.