A nurse is providing education to a client who is scheduled for a left knee arthroplasty. Which of the following statements regarding informed consent indicates client understanding of the teaching?

Choice A reason: Marking drainage output every 48 hours is too infrequent to accurately assess drainage in a closed wound drainage system. Frequent monitoring (e.g., every shift) is needed to track output, detect complications like excessive bleeding, and ensure system functionality, making this intervention inadequate for assessment.
Choice B reason: Stripping the chest tube vigorously is not recommended, as it can increase intrathoracic pressure, risking tissue damage or bleeding. It does not assess drainage amount but manipulates the tube, potentially causing harm. Assessment requires observing output in the collection chamber, making this action incorrect.
Choice C reason: Maintaining the collection chamber below the client’s chest ensures proper drainage by gravity in a closed wound drainage system, like a chest tube. This position prevents backflow and allows accurate measurement of drainage output in the chamber, essential for assessing fluid loss and detecting complications like hemothorax.
Choice D reason: Adding water to the water seal chamber maintains system function but does not directly assess drainage amount. The water seal prevents air re-entry, not measures output. Assessment involves observing and recording drainage in the collection chamber, making this action irrelevant to the question’s focus.

Choice A reason: A subdural hematoma increases complication risk during electroconvulsive therapy (ECT) due to elevated intracranial pressure. ECT-induced seizures can worsen bleeding or cause herniation, posing significant neurological risks. This condition requires careful evaluation, making it the critical risk factor for complications.
Choice B reason: Hyperthyroidism may increase heart rate or metabolic demand but is not a primary risk for ECT complications. With proper management, it poses minimal risk compared to intracranial issues, so this is not the most concerning condition, making it incorrect.
Choice C reason: Renal calculi do not directly impact ECT safety, as they are unrelated to neurological or cardiovascular risks during seizures. This condition is manageable and not a significant complication risk, so it is incorrect for this scenario.
Choice D reason: Diabetes mellitus requires monitoring during ECT due to fasting or medication effects, but it is not a primary risk for complications. With proper glucose management, risks are minimal, so this is incorrect compared to a subdural hematoma’s impact.