A client with a seizure disorder is seen at the clinic for a follow-up visit and a prescription renewal for phenytoin. Which assessment finding warrants immediate intervention by the nurse?

Choice A reason: This is not an appropriate action for the nurse to take. Increasing the intake of saturated fats will worsen the side effects of orlistat, which inhibits the absorption of fats in the intestine. The client should be advised to follow a low-fat diet while taking orlistat.

Choice B reason: This is not an appropriate action for the nurse to take. Oily stools and flatus are common and expected side effects of orlistat, and they do not indicate a serious adverse reaction. The client does not need to stop taking the drug or contact her healthcare provider unless the symptoms are severe or persistent.

Choice C reason: This is not an appropriate action for the nurse to take. Obtaining a stool specimen to evaluate for occult blood and fat content is not necessary for a client taking orlistat. The presence of fat in the stool is normal and expected with orlistat, and there is no evidence of bleeding in the client's case.

Choice D reason: This is the appropriate action for the nurse to take. Asking the client to describe her dietary intake history for the last several days will help the nurse assess the client's compliance with the recommended low-fat diet and provide education and counseling as needed. The nurse can also monitor the client's weight loss progress and adjust the dosage of orlistat accordingly.

Choice A reason: Increased urinary clearance of the multiple medications is not the cause of the client's syncope. Diuresis is a common side effect of some antihypertensive medications, such as diuretics, but it does not lower the blood pressure to a dangerous level. The nurse should monitor the client's fluid and electrolyte balance and urine output, but it is not the priority action in this situation.

Choice B reason: The synergistic effect of the multiple medications is not the cause of the client's syncope. Synergism is when two or more drugs work together to produce a greater effect than the sum of their individual effects. This can be beneficial or harmful, depending on the drugs and the doses. The nurse should check the client's medication history and avoid prescribing drugs that have a negative synergistic effect, but it is not the most likely explanation for the client's hypotension.

Choice C reason: The antagonistic interaction among the various blood pressure medications is not the cause of the client's syncope. Antagonism is when two or more drugs work against each other to reduce or cancel out their effects. This can decrease the effectiveness of the treatment and increase the risk of complications. The nurse should check the client's medication history and avoid prescribing drugs that have a negative antagonistic effect, but it is not the most likely explanation for the client's hypotension.

Choice D reason: The additive effect of multiple medications is the most likely cause of the client's syncope. Additivity is when two or more drugs have a similar effect and their combined effect is equal to the sum of their individual effects. This can lower the blood pressure too much and cause symptoms such as dizziness, fainting, and shock. The nurse should hold the client's scheduled antihypertensive medications and notify the healthcare provider. The nurse should also monitor the client's vital signs, level of consciousness, and perfusion.