Stable chest pain is usually worsened by which factor?

Stable chest pain is usually worsened by which factor?

• A. Sleep
• B. Hydration
• C. Activity
• D. Eating

Answer: (C)

The main concept here is that stable angina pain is caused by an oxygen supply–demand mismatch in the heart muscle. When you exert yourself, your heart rate, blood pressure, and overall workload rise, increasing myocardial oxygen demand. With a fixed narrowing from atherosclerosis, the coronary arteries can’t dilate enough to meet this higher demand, so the myocardium becomes ischemic and you feel chest pain. Relaxing or resting lowers demand, and nitrates help by dilating vessels to improve blood flow, relieving the pain. So, physical activity is the factor that typically worsens stable chest pain because it directly raises the heart’s oxygen needs, revealing ischemia in the setting of fixed coronary stenosis. Sleep isn’t the typical trigger for stable angina and often pain at rest suggests a different pattern (like vasospastic angina). Hydration and eating can influence symptoms in some individuals but are not the classic, consistent triggers like exertion.

The main concept here is that stable angina pain is caused by an oxygen supply–demand mismatch in the heart muscle. When you exert yourself, your heart rate, blood pressure, and overall workload rise, increasing myocardial oxygen demand. With a fixed narrowing from atherosclerosis, the coronary arteries can’t dilate enough to meet this higher demand, so the myocardium becomes ischemic and you feel chest pain. Relaxing or resting lowers demand, and nitrates help by dilating vessels to improve blood flow, relieving the pain.

So, physical activity is the factor that typically worsens stable chest pain because it directly raises the heart’s oxygen needs, revealing ischemia in the setting of fixed coronary stenosis.

Sleep isn’t the typical trigger for stable angina and often pain at rest suggests a different pattern (like vasospastic angina). Hydration and eating can influence symptoms in some individuals but are not the classic, consistent triggers like exertion.