Correct Answer: C

Rationale: The correct answer is C: Friction. The amount of friction is crucial in effective hand hygiene to remove microorganisms. Rubbing hands together with friction helps to dislodge and remove dirt, oils, and microorganisms. While temperature and soap are important factors in hand hygiene, the mechanical action of friction plays a more significant role in physically removing contaminants. Time is also important in hand hygiene practice, but without adequate friction, the effectiveness of the process is compromised.

Correct Answer: A

Rationale: The correct answer is A: Narrowed arterial lumen. Arterial bruits are abnormal sounds caused by turbulent blood flow through narrowed or occluded arteries. This turbulent flow creates a blowing sound, which is heard as an arterial bruit. Distended jugular veins (choice B) are typically associated with venous issues, not arterial abnormalities. Impaired ventricular contraction (choice C) and asynchronous closure of the aortic and pulmonic valve (choice D) are not directly related to the audible vascular sound described in the scenario.

Correct Answer: A

Rationale: The correct answer is A: Trying to increase independence. Toddlers around the age of 2 often exhibit behaviors like temper tantrums and saying 'no' as they are asserting their independence and autonomy. This behavior is a normal part of their developmental stage where they are starting to explore and assert their own preferences and desires. Choice B, developing a sense of trust, is more relevant to infants during the trust vs. mistrust stage. Choice C, establishing a new identity, is typically associated with adolescence and identity formation. Choice D, attempting to master a skill, is more indicative of a child trying to learn and develop new abilities rather than the behavior described in the scenario.

Correct Answer: D

Rationale: Hypotension is a critical finding that should be reported immediately in a client with acute pancreatitis as it may indicate severe complications such as hemorrhage or shock. While elevated serum lipase level, severe abdominal pain, and nausea/vomiting are common manifestations of acute pancreatitis, hypotension is a more urgent sign requiring immediate attention to prevent further deterioration. Hypotension can be a sign of significant fluid loss, hemorrhage, or sepsis, which are potentially life-threatening conditions that need prompt intervention. Elevated serum lipase levels, severe abdominal pain, and nausea/vomiting are important in the assessment of pancreatitis but do not indicate the same level of immediate danger as hypotension does.

Correct Answer: D

Rationale: Chronic pain is typically defined as pain lasting longer than 3-6 months or persisting after the expected time for tissue healing. Episodic back pain following a fall 2 years ago fits the criteria for chronic pain. Option A describes acute pain related to a recent fracture. Option B describes acute postoperative pain. Option C describes acute pain associated with an acute condition (food poisoning). Therefore, the correct identification of a client experiencing chronic pain is the one with episodic back pain from a past injury, as it has lasted beyond the normal healing time.