Q: Which of the following drugs is (are) sulfon- amides?
(a) : mafenide
(b) : tacrolimus
(c) : tramadol
(d) : busulfan
(e) : milrinone
Answer: mafenide
Explanation: Mafenide (Sulfamylon) is a bacteriostatic agent that is active against many gram-positive and gram-negative organisms. Topical products containing mafenide are applied to 2nd- and 3rd-degree burns in order to reduce the chance of infection and increase the speed of healing.
Explanation: Mafenide (Sulfamylon) is a bacteriostatic agent that is active against many gram-positive and gram-negative organisms. Topical products containing mafenide are applied to 2nd- and 3rd-degree burns in order to reduce the chance of infection and increase the speed of healing.
Q: A radiopharmacist prepares a solution of 99mTc (40 mCi/mL) at 6:00 AM. If the solution is intended for administration at 12:00 noon at a dose of 20 mCi, how many mL of the original solution are needed? (The half-life of the radioisotope is 6 hours.)
(a) : 0.5 mL
(b) : 1.0 mL
(c) : 1.5 mL
(d) : 2.0 mL
(e) : 5.0 mL
Answer: 1.0 mL
Explanation: Because the time interval between preparation and administration is 6 h, and the half-life of the radiopharmaceutical is 6 h, approximately one-half of the original strength has decayed. Therefore, 1 mL of the solution now assaying at 20 mCi/mL is needed.
Explanation: Because the time interval between preparation and administration is 6 h, and the half-life of the radiopharmaceutical is 6 h, approximately one-half of the original strength has decayed. Therefore, 1 mL of the solution now assaying at 20 mCi/mL is needed.