A nurse is reviewing the medical record of a client who has a new prescription for verapamil. Which of the following findings in the client's medical record should the nurse identify as a contraindication for the administration of verapamil?

Neostigmine is a medication classified as an acetylcholinesterase inhibitor. It is commonly used to treat myasthenia gravis and to reverse the effects of non-depolarizing neuromuscular blocking agents used during surgery. Adverse reactions to neostigmine are related to its cholinergic effects, which result from increased acetylcholine levels in the body.

Let's go through the options:

A. Hypoactive bowel sounds: Neostigmine can actually increase gastrointestinal motility and may cause increased bowel sounds or even diarrhea, not hypoactive bowel sounds. Therefore, hypoactive bowel sounds are not an adverse reaction to neostigmine.

B. Sweating: Sweating is a cholinergic effect and can be an adverse reaction to neostigmine. Increased sweating is a common sign of cholinergic stimulation.

C. Respiratory distress: Respiratory distress can occur as an adverse reaction to neostigmine, particularly if the client has a history of asthma or other respiratory conditions. Neostigmine can cause bronchoconstriction and excessive secretions, leading to respiratory distress.

D. Urinary retention: Neostigmine is actually used to treat urinary retention by increasing bladder contraction. Therefore, urinary retention is not an adverse reaction to neostigmine.

E. Bradycardia: Bradycardia (slow heart rate) is a significant adverse reaction to neostigmine due to its cholinergic effects on the heart. Increased acetylcholine levels can lead to excessive stimulation of the vagus nerve, resulting in bradycardia.

To calculate the rate at which the IV pump should be set to deliver dopamine, we need to determine the total amount of dopamine in the infusion and divide it by the desired dose per minute.

Given:

Dopamine concentration: 400 mg in 250 mL

Desired dose: 5 mcg/kg/min

Patient weight: 220 lb

First, we need to convert the patient's weight from pounds to kilograms:

220 lb ÷ 2.2 = 100 kg

Next, we need to calculate the total amount of dopamine needed per minute:

5 mcg/kg/min × 100 kg = 500 mcg/min

Now, we need to convert the dopamine dose from mcg to mg:

500 mcg/min ÷ 1000 = 0.5 mg/min

To determine the infusion rate in mL/hr, we divide the dose in mg/min by the dopamine concentration in the infusion solution:

0.5 mg/min ÷ 250 mL = 0.002 mL/min

Finally, we convert the infusion rate from mL/min to mL/hr by multiplying by 60:

0.002 mL/min × 60 min = 0.12 mL/hr

Therefore, the nurse should set the IV pump to deliver 0.12 mL/hr.