Correct Answer: D

Rationale: The correct answer is the Appendix. Tenderness in the right lower quadrant of the abdomen is a classic sign of appendicitis, which is inflammation of the appendix. The appendix is located in the right lower quadrant. The other choices are incorrect. The spleen is located on the posterolateral wall of the abdominal cavity under the diaphragm. The pancreas is located behind the stomach. The liver fills most of the right upper quadrant and extends to the left midclavicular line.

Correct Answer: C

Rationale: When assessing the carotid artery of a client with cardiovascular disease, the nurse should listen to the carotid artery using the bell of the stethoscope to assess for bruits. This is crucial in detecting abnormal sounds that may indicate underlying pathology. Palpating the carotid artery in the upper third of the neck can trigger a vagal response, leading to a decrease in heart rate, which is undesirable. Palpating both arteries simultaneously can disrupt blood flow to the brain. Instructing the client to take slow, deep breaths is unnecessary and not a standard practice during carotid artery assessment.

Correct Answer: A

Rationale: Diltiazem belongs to the class of calcium-channel blockers, not NSAIDs, ACE Inhibitors, or Beta-Blockers. Calcium-channel blockers like Diltiazem are used to treat conditions such as hypertension by relaxing blood vessels and increasing the supply of blood and oxygen to the heart. Therefore, the correct classification for Diltiazem is a Calcium-Channel Blocker. NSAIDs, ACE Inhibitors, and Beta-Blockers belong to different classes of drugs with distinct mechanisms of action and therapeutic uses, making them incorrect choices for Diltiazem.

Correct Answer: D

Rationale: The correct answer is the Wong-Baker Pain Scale. This scale is specifically designed for pediatric clients, including children as young as 3 years old, making it the most appropriate choice for a 4-year-old. It utilizes a simple visual scale with facial expressions that children can easily understand and use to express their pain levels. The FLACC and CRIES Pain Scales are also used for pediatric clients but are more focused on non-verbal cues and specific populations like infants or critically ill children. The McGill Pain Scale, on the other hand, is more complex and uses descriptive words, making it more suitable for adult clients who can better articulate their pain experiences.

Correct Answer: D

Rationale: Morphine is the least appropriate choice for pain management in pancreatitis due to its potential to cause spasms in the Sphincter of Oddi, which can worsen the client's condition by potentially obstructing the pancreatic duct. Tylenol, Tramadol, and Codeine are more suitable options for pain management in acute pancreatitis as they do not carry the same risk of exacerbating the condition by causing spasms in the Sphincter of Oddi.