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.7) A solution containing 500,000 units of polymyxin B sulfate in 20 mL of sterile water for injection is added to 500 mL of 5% dextrose injection. The infusion is to be administered over 2.5 hours. If the administration set calibrates 10 drops/mL. At what rate, in drops per minute, should the flow be adjusted to administer the infusion over the designated time interval? (Do not ignore volume contribution due to admixture).
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A solution containing 500000 units of polymyxin B sulfate in 20 mL of sterile water for injection is added to 500 mL of 5% dextrose injection. The infusion is to be administrated over 2.5 hours.

500 mL of 5% dextrose injection is to be administered in 150 min 1 mL of 5% dextrose injection is to be administered in 150/50o - 0.30 minutes 20 drops mL 20 drops/0.30 min 66.67 drop/min Ans: 66.67 drop min (worked out)

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