National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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A physical sign of impending syncope is?

Pallor
Hyperemia
Cyanosis
Erythema

The correct answer is: Pallor

A physical sign of impending syncope, also known as fainting, is pallor. This means that the person's face appears extremely pale or white due to a temporary decrease in blood flow to the area. The other options of hyperemia, cyanosis, and erythema all refer to conditions that involve the skin turning red or purple due to an increase in blood flow or a lack of oxygen in the blood. These are not typical signs of impending syncope and may even indicate another underlying medical condition. Therefore, A is the most accurate answer.