Mr. Cook requires medication for nausea. Compazine 10mg po q 4hrs prn ordered. You have Compazine 5-mg tablets available. How many tablets will you administer per dose?

A. Errors by the nurse assistant in measuring temperature. While improper technique can lead to inaccurate readings, consistent temperature fluctuations in a head injury patient are more likely due to hypothalamic dysfunction.
B. Increased vasodilatation of the superficial vessels contributing to excess heat losses. Vasodilation can play a role in heat loss, but it does not fully explain difficulty maintaining body temperature, which is primarily regulated by the hypothalamus.
C. The client's head injury causing interference with the function of the hypothalamus. The hypothalamus regulates body temperature, and a severe head injury can disrupt this function, leading to temperature instability (neurogenic fever or hypothermia) despite the absence of infection.
D. Choosing the wrong time of day to obtain vital signs. While body temperature naturally fluctuates throughout the day, major instability in temperature regulation is not due to the timing of measurement but rather an issue with the hypothalamus.

A. "The top number is the systolic blood pressure and reflects the pressure on the arteries when the heart contracts." The systolic pressure (118 mmHg) represents the force exerted on the arterial walls when the heart contracts and pumps blood.
B. "The numbers are within normal range and nothing to worry about." While 118/82 mmHg is within the normal range, this response does not explain what the numbers mean, which was the patient’s question.
C. "The concept of blood pressure is difficult to understand. The main thing to be concerned about is the top number, or systolic blood pressure." While the systolic pressure is important, the diastolic pressure is also crucial for assessing cardiovascular health. This response also discourages patient education.
D. "The bottom number is the diastolic pressure and reflects the stroke volume of the heart." Diastolic pressure (82 mmHg) represents the pressure in the arteries when the heart is at rest, not stroke volume, which refers to the amount of blood ejected per heartbeat.