Correct Answer: B

Rationale: The correct answer is B: To prevent cerebrospinal fluid (CSF) leakage. 1. Positioning is crucial to prevent CSF leakage as the spinal block is administered into the sub-arachnoid space where CSF is present. 2. Incorrect Answers: A: Positioning is not related to preventing confusion in this context. C: Seizures are not typically associated with spinal block anesthesia. D: Cardiac arrhythmias are not directly impacted by the client's positioning for a spinal block.

Correct Answer: D

Rationale: The correct answer is D: throbbing headache. Nitroglycerin is a vasodilator that relaxes blood vessels, leading to increased blood flow and reduced workload on the heart. One common side effect of nitroglycerin is a throbbing headache due to the dilation of blood vessels in the brain. This side effect is expected and usually diminishes with continued use. Explanation of other choices: A: High blood pressure - Nitroglycerin actually helps lower blood pressure by dilating blood vessels. B: GIT irritation - This is not a common side effect of nitroglycerin, as it primarily affects the cardiovascular system. C: Shortness of breathing - This is not a typical side effect of nitroglycerin, as it does not directly affect respiratory function.

Correct Answer: B

Rationale: Correct Answer: B Rationale: Measuring intake and output and recommending increased fluid intake for a client with pyelonephritis is crucial to help flush out infectious microorganisms from the urinary tract. By increasing fluid intake, the client will urinate more frequently, aiding in the removal of bacteria causing the infection. This helps in reducing the bacterial load in the urinary tract and promoting faster recovery. Monitoring intake and output also helps ensure the client is adequately hydrated. Summary of Other Choices: A: Monitoring intake and output is more about assessing hydration status and kidney function rather than the response to therapy. C: Intake and output measurement does not directly determine the location of discomfort in pyelonephritis. D: Monitoring intake and output is not primarily for detecting changes but for ensuring proper fluid balance and aiding in infection clearance.

Correct Answer: B

Rationale: The correct answer is B because rifampin can cause discoloration of bodily fluids, including tears. If clients wear contact lenses, they need to be informed that the lenses may become colored due to this medication. This is important for the client's awareness and to prevent any potential harm to their eyes. A: Taking medication with meals is not necessary for rifampin administration. C: Avoiding wearing glasses is not relevant to rifampin treatment. D: Avoiding tuna, aged cheese, and red wine is not specifically related to rifampin use.

Correct Answer: B

Rationale: The correct answer is B: Maintain strict aseptic technique. This is crucial during thoracentesis to prevent infection. Step 1: Before the procedure, sterile equipment and supplies must be used. Step 2: Proper hand hygiene is essential to reduce the risk of introducing pathogens. Step 3: During the procedure, maintaining a sterile field helps minimize the risk of contamination. Step 4: After the procedure, ensuring proper disposal of all used supplies prevents the spread of infection. Summary: A: Placing the patient in a quiet and cool room may be comforting but is not directly related to the safety of the procedure. C: Advising the patient to sit still is important for accurate needle insertion but does not address infection prevention. D: Applying pressure over the puncture site is important but does not prevent infection if aseptic technique is not maintained.