A nurse is instructing a client who has cancer about precautions to take while undergoing chemotherapy. Which of the following statements by the client indicates an understanding of the teaching?

Choice A rationale:
The nurse should instruct the client to place cellular phones on the ear opposite the side of the pacemaker to minimize the risk of electromagnetic interference. Although the risk of interference is low with modern pacemakers, it is still a precautionary measure. Placing the phone on the ear opposite the pacemaker reduces the likelihood of any potential electromagnetic interaction.
Choice B rationale:
The instruction in choice B, "Avoid showering for the first 2 weeks following surgery,”. is not appropriate. There is no need for the client to avoid showering after pacemaker insertion. In fact, maintaining good hygiene is essential to prevent infection at the incision site. The client can take a shower, but they should avoid soaking the incision area and patting it dry afterward.
Choice C rationale:
The instruction in choice C, "Avoid heavy lifting for 1 week following insertion,”. is not the best option. The recommended timeframe to avoid heavy lifting after a pacemaker insertion is usually around 4 to 6 weeks. This duration allows the surgical site to heal properly and reduces the risk of dislodging the pacemaker leads or causing damage.
Choice D rationale:
The instruction in choice D, "Stand at least 2 feet away while using a microwave,”. is not directly related to pacemaker care. While it is generally recommended to maintain a safe distance from microwaves during use, this instruction is not specific to clients with pacemakers.

Choice A rationale:

A decrease in NG tube drainage indicates that the client's stomach contents are not being aspirated excessively, which suggests that the IV fluids are effectively maintaining fluid volume balance. This finding is positive because it shows that the client is retaining the fluids they need, and it may also indicate improved gastrointestinal function and decreased risk of dehydration.

Choice B rationale:

The potassium level of 3.3 mEq/L (milliequivalents per liter) is low. The normal range for potassium is typically between 3.5 to 5.0 mEq/L. Hypokalemia (low potassium) can result from various factors and may cause muscle weakness, cardiac arrhythmias, and other complications. It is not a finding that indicates the effectiveness of fluid volume balance therapy.

Choice C rationale:

An increased heart rate may suggest that the client is experiencing fluid volume deficit or other physiological stress. It is not a finding that indicates the effectiveness of fluid volume balance therapy.

Choice D rationale:

A hematocrit level of 46% is within the normal range for adult males (typically around 38.8% to 50%) and indicates the proportion of red blood cells in the blood. While it can provide information about blood viscosity and hydration status, it does not directly indicate the effectiveness of fluid volume balance therapy.