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What Causes Myocardial Infarction When Under Stress?

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Posted on Wed, 1 Jun 2016
Question: Hello. I have heard cases of people mostly males that they get a myocardial infarction after a strong argue. I have never understood how this happens? Do you have to have already a cardiovascular issue for this to happen? What are the factors that put you at risk for an MI while a strong argue? If you can assist me with my query, I will appreciate it!. Thank you!
Best regards
XXXX
doctor
Answered by Dr. Ilir Sharka (1 hour later)
Brief Answer:
I would explain as follows:

Detailed Answer:
Hello XXXXXX,

I am glad to hear from you again on HCM!

Regarding your concern, I would explain that it is true that a myocardial infarction (heart attack) can occur during a strong argue. This happens only in persons suffering from coronary artery disease, symptomatic or non symptomatic.

You should know that a strong argue, imposes a big psychological stress to the body, leading to a strong activation of sympathetic nervous system, leading to increased release of chatecholamines (adrenaline and noradrenaline) in blood. These hormones increase the contraction of myocardial muscles and also the heart rate increasing the need for blood (with oxygen and energetic substances) from the myocardial cells. But when coronary arteries are narrowed (like in coronary artery disease), they can not supply the heart with the necessary amount of blood, thus leading to myocardial cell hypoxia and ischemia. When this situation is prolonged (just like during a strong argue), it can lead to death of myocardial cells, also called a heart attack or myocardial infarction.

This is the same what happens during a strenuous physical activity in persons suffering from coronary artery disease.

Both psychological and physical stress can lead to myocardial infarction with the same pathological mechanisms in coronary artery disease patients.

The risk factors that lead to MI after a strong argue are the same risk factors that lead to coronary artery disease (also called cardio-vascular risk factors) including:

-smoking and alcohol
-arterial hypertension
-obesity and sedentary life
-dyslipidemia (high cholesterol levels)
-family history
-diabetes, etc.

Hope to have clarified some of your uncertainties.

Feel free to ask any other questions whenever you need!

Best wishes,

Dr. Iliri
Note: For further queries related to coronary artery disease and prevention, click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
Dr.
Dr. Ilir Sharka

Cardiologist

Practicing since :2001

Answered : 9535 Questions

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What Causes Myocardial Infarction When Under Stress?

Brief Answer: I would explain as follows: Detailed Answer: Hello XXXXXX, I am glad to hear from you again on HCM! Regarding your concern, I would explain that it is true that a myocardial infarction (heart attack) can occur during a strong argue. This happens only in persons suffering from coronary artery disease, symptomatic or non symptomatic. You should know that a strong argue, imposes a big psychological stress to the body, leading to a strong activation of sympathetic nervous system, leading to increased release of chatecholamines (adrenaline and noradrenaline) in blood. These hormones increase the contraction of myocardial muscles and also the heart rate increasing the need for blood (with oxygen and energetic substances) from the myocardial cells. But when coronary arteries are narrowed (like in coronary artery disease), they can not supply the heart with the necessary amount of blood, thus leading to myocardial cell hypoxia and ischemia. When this situation is prolonged (just like during a strong argue), it can lead to death of myocardial cells, also called a heart attack or myocardial infarction. This is the same what happens during a strenuous physical activity in persons suffering from coronary artery disease. Both psychological and physical stress can lead to myocardial infarction with the same pathological mechanisms in coronary artery disease patients. The risk factors that lead to MI after a strong argue are the same risk factors that lead to coronary artery disease (also called cardio-vascular risk factors) including: -smoking and alcohol -arterial hypertension -obesity and sedentary life -dyslipidemia (high cholesterol levels) -family history -diabetes, etc. Hope to have clarified some of your uncertainties. Feel free to ask any other questions whenever you need! Best wishes, Dr. Iliri