Does blood pressure change during a heart attack?

Blood pressure is the force of your blood as it’s pushed from your heart and circulated throughout your body. During a heart attack, the blood flow to a portion of your heart is blocked. Sometimes, this can lead to your blood pressure decreasing. In some people, there may be little change to your blood pressure at all. In other cases, there may be an increase in blood pressure.

在心脏病发作期间可能发生的任何血压变化都是不可预测的，因此医生通常不会将它们作为心脏病发作的标志。虽然在心脏病发作期间，血压可能发生变化，但其他类型的心脏病发作症状更加明显。

通过评估流过动脉的血液施加在这些动脉的墙壁上来测量血压。A.心脏病发作，血液流向一部分的心肌受到限制或切断，往往是因为血凝块阻断动脉。如果没有必要的血液供应，那么内心的受影响的部分就不会得到它需要正常工作的氧气。

Decreases

有时，心脏病发作期间血压会降低。低血压也被称为低血压. Low blood pressure during a heart attack can be due to a few factors:

Your heart pumps less blood because its tissue is damaged:A.心脏病发作, blood flow to your heart is blocked or cut off completely. This can “stun” or even kill the tissues that make up your heart muscle. Stunned or dead heart tissues reduce the amount of blood your heart can pump to the rest of your body.

回应痛苦：心脏病发作的痛苦可以引发一些人的血管养反应。仿血管响应是您神经系统对触发器的反应，如极度压力或疼痛。它导致血压下降，可以导致fainting.

Your parasympathetic nervous system goes into overdrive:您的副交感神经系统（PNS）负责您的身体休息状态，其中血压降低。心脏病发作可能导致您的PNS进入过驱动，降低血压。

增加

单独的低血压并不是一种心脏病发作的指示，因为不是每个人都会在心脏病发作期间患上血压降低。在某些人中，心脏病发作可能不会导致血压的任何显着变化。

其他人甚至可能会增加血压的增加，也称为高血压，在心脏病发作期间。这可能是由肾上腺素中的激素中的尖峰引起的，肾上腺素在心脏病发作等压力情况下淹没了身体。

A heart attack can also cause your sympathetic nervous system (SNS) to go into overdrive, leading to blood pressure increases. Your SNS is responsible for your “fight or flight” reactions.

Blood pressure is not an accurate predictor of a heart attack. Sometimes a heart attack can cause an increase or decrease in blood pressure, but having a change in blood pressure reading doesn’t always mean it’s heart-related. Instead, a better strategy for gauging a heart attack is to look at your overall symptoms. A heart attack may cause multiple symptoms, just a few symptoms, or even no symptoms at all.

Chest pain is the most common symptom of a heart attack. However, it’s not the only symptom. Possible symptoms of a heart attack include:

  • 胸痛
  • mild to severe squeezing sensations in the chest area
  • pain in the arms (or just one, usually the left)
  • 冷汗
  • 腹痛
  • 下巴，颈部和腰痛
  • 恶心
  • vomiting
  • 头晕或昏厥
  • 气促

这些症状通常是心脏发作的更好的预测因子，而不是血压读数。

与您的医生定期检查是确定您心脏病发作的整体风险的关键。风险因素可以包括：

  • 肥胖
  • diabetes
  • 家史
  • 年龄
  • 高血压
  • personal history of heart attack
  • 抽烟
  • sedentary lifestyle

虽然无法预测心脏病发作，但您可以与您的医生合作，以降低发生在您身上的可能性。