What is the primary effect of hyperthyroidism on vital signs?

Hyperthyroidism is a condition characterized by an overproduction of thyroid hormones, which significantly influences various physiological processes, including heart function and blood pressure regulation. The primary effect of hyperthyroidism on vital signs is indeed an increase in heart rate and blood pressure.

When thyroid hormones are elevated, they stimulate the heart to beat faster (tachycardia) and increase the force of each contraction. This leads to an increased cardiac output, which is reflected in vital sign measurements. Additionally, hyperthyroidism can cause an increase in metabolic rate, leading to heightened activity in various bodily systems, further contributing to the rise in heart rate and blood pressure.

The increase in blood pressure occurs due to several mechanisms, including vasodilation and heightened cardiac output. Consequently, individuals with hyperthyroidism often present with symptoms such as palpitations, anxiety, and heat intolerance, all associated with elevated heart rate and blood pressure.

In contrast, the incorrect options suggest a decrease or no change in vital signs, which does not align with the physiological effects of hyperthyroidism. Hyperthyroidism is known for its stimulatory effects on the cardiovascular system, making the correct choice clear in the context of the medical understanding of the condition.