According to the American Heart Association, healthcare providers should not attempt to alter glucose concentration within a specific range because of the increased risk of hypoglycemia. What is the suggested range?

Correct Answer: B

Rationale: The correct answer is B (80-110 mg/dL) as per the American Heart Association guidelines. It is considered the optimal range for glucose concentration to prevent hypoglycemia and hyperglycemia. Choice A (60-90 mg/dL) is too low and can lead to hypoglycemia. Choice C (186-202 mg/dL) and D (110-160 mg/dL) are too high and can increase the risk of hyperglycemia and complications. Staying within the recommended range helps maintain stable blood sugar levels and reduces the risk of adverse events.

Correct Answer: C

Rationale: In Class 2 hemorrhage, systolic blood pressure starts to decrease due to significant blood loss (15-30%). This reduction triggers compensatory mechanisms to maintain perfusion. In Class 0, there is no blood loss, so blood pressure remains stable. In Class 1, minimal blood loss occurs, causing little impact on blood pressure. In Class 3, severe blood loss leads to a rapid decrease in blood pressure, making it unlikely for systolic blood pressure to start decreasing gradually.

Correct Answer: C

Rationale: Rationale: Choice C is incorrect because pulse oximetry provides a spot-check measurement of oxygen saturation, not continuous monitoring. A: Surrounding light can interfere with accuracy due to the device's sensitivity. B: Dysfunctional hemoglobin can affect readings. D: The technology relies on light absorption differences to measure oxygen levels accurately.

Correct Answer: A

Rationale: The correct answer is A because cardiac tamponade is a life-threatening condition where fluid accumulation in the pericardial sac compresses the heart. Surgical intervention, such as pericardial drainage or pericardiotomy, is often required to relieve the pressure on the heart. Choice B, needle pericardiocentesis, is a temporary measure and may not definitively manage the condition. Choice C, Beck's triad (hypotension, elevated jugular venous pressure, muffled heart sounds), may be present but is not always diagnostic. Choice D, Kussmaul breathing (deep, labored breathing), is indicative of other conditions like metabolic acidosis rather than cardiac tamponade.

Correct Answer: D

Rationale: The correct answer is D: "Decreased pulse pressure." Airway compromise typically leads to increased pulse pressure due to increased sympathetic activity. A: "Change in voice" can indicate vocal cord dysfunction. B: "Stridor" is a high-pitched sound during inspiration, indicating upper airway obstruction. C: "Tachypnea" is rapid breathing, a compensatory mechanism in response to airway compromise.