Correct Answer: B

Rationale: The correct answer is B: PT/INR. When a patient is on warfarin therapy, healthcare providers monitor the PT/INR levels to evaluate the effectiveness of the treatment and assess the risk of bleeding. Monitoring potassium, sodium, or calcium levels is not directly related to warfarin therapy and would not provide the necessary information needed to manage the medication effectively.

Correct Answer: C

Rationale: A respiratory rate of 12/min may indicate respiratory depression, a potential side effect of opioid analgesics. Respiratory depression can be a serious complication that requires immediate intervention. Monitoring the respiratory rate is crucial in clients receiving opioids to prevent adverse events. Oxygen saturation, blood pressure, and heart rate are important parameters to assess, but a low respiratory rate is a more critical finding that warrants immediate reporting to the healthcare provider.

Correct Answer: A

Rationale: When a healthcare provider discovers a patient has fallen, the primary action should be to assess the patient for injuries. This is crucial to determine the extent of harm and if immediate treatment is necessary. Calling for help is important, but assessing the patient's condition takes precedence to ensure the patient's safety and well-being. While documenting the fall and notifying the healthcare provider are essential steps, they come after assessing the patient's injuries.

Correct Answer: A

Rationale: The correct action to prevent aspiration in a client with a nasogastric tube is to elevate the head of the bed to 45 degrees during feedings. This positioning helps reduce the risk of regurgitation and aspiration of gastric contents. Placing the client in the left lateral position after feedings does not directly prevent aspiration. Flushing the tube with sterile water before each feeding is important for tube patency but does not specifically prevent aspiration. Checking gastric residuals every 8 hours is necessary to monitor the client's tolerance to feedings but is not a direct preventive measure against aspiration.

Correct Answer: A

Rationale: The nurse should document the time the medication was given in the client's medical record when administering an incorrect dose. This information is crucial for tracking the sequence of events leading to the error. Choice B, the client's response to the medication, is important for monitoring the client's condition post-administration but may not be directly linked to the incident report. Choice C, documenting the dose that was administered, is relevant but does not provide insights into the timing of events. Choice D, detailing the reason for the error, should be included in the incident report but may not need to be documented in the client's medical record.