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Doctor insights on: Pathophysiology Of Chest Pain In Myocardial Infarction

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Why is there chest pain present with a myocardial infarction?

Why is there chest pain present with a myocardial infarction?

Chemical: During infarction ischemia leads to production of Adenosine which mediated chest pain. The pain fibers are not specific so some people feel in the chest others in the arm or neck.

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Dr. Creighton Wright
1,180 Doctors shared insights

Myocardial Infarction (Definition)

Myocardial Infarction means some of the heart muscle dies because of insufficient oxygen supply. Most often this occurs because the coronary artery is blocked by plaque & clot. Other causes include tears in the artery wall, extremely high oxygen demand (eg, rapid arrhythmia, heart valve disorder, or severe systemic illness.) Prompt treatment can minimize heart damage & ...Read more


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How can differentiate the chest pain from acute pericarditis than acute myocardial infarction?

How can differentiate the chest pain from acute pericarditis than acute myocardial infarction?

Different: Acute pericarditis may present with fever chest pain. On exam we may find pericardial rub. Also ekg findings may differ between the two.

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Chest pain and possible myocardial infarction. Ecg reveals sinus tachycardia. What does this mean at 50?

Chest pain and possible myocardial infarction. Ecg reveals sinus tachycardia. What does this mean at 50?

Sinus tachycardia: Sinus tachycardia refers to a faster than normal heart rate. Usually higher than 100 beats/minute. Please see your pcp for further evaluation for chest pain.

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What can cause a myocardial infarction at age 30?

Heart attack: Premature coronary artery disease of atherosclerotic type can cause mi in young people, smoking, cocaine, inflammatory heart disease, some hyperthrombotic diseases, while uncommon that young, it definitely happens.

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Why is there ST segment elevation during a myocardial infarction?

Why is there ST segment elevation during a myocardial infarction?

Ecg: The ST segment elevation is caused by an electrical potential difference in that phase of the cardiac cycle between the dying cardiac muscle and normal parts of the heart and the vector direction of that potential difference as manifest on the ecg.

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Can folliculitis bring on myocardial infarction?

Can folliculitis bring on myocardial infarction?

No: Folliculitis is a bacterial infection of hair follicles, usually a mild condition. Myocardial infarction is a heart attack most often caused by a blocked artery in the heart.

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I need to know what's an inferior myocardial infarction?

I need to know what's an inferior myocardial infarction?

Heart attack: Inferior myocardial infarction is a heart attack on the bottom of the heart. This portion of the heart is frequently served by the right coronary artery but occasionally by the circumflex coronary artery. When the artery closes, the bottom of the heart does not get any blood, and the muscle of the heart is injured.

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Reason for st segment elevation in myocardial infarction?

Reason for st segment elevation in myocardial infarction?

Electrical: A heart attack damages muscles in the heart. The flow of the electrical current throughout the wall changes when having to go around the damaged muscle, resulting in certain ekg changes, since ekg's show the path of electrical current in the heart. There are different changes, de[ending on which part of the muscle is damaged.

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What's the meaning of "st elevation myocardial infarction (stemi)"?

What's the meaning of "st elevation myocardial infarction (stemi)"?

Severe Heart Attack: Heart attacks - the lay term for myocardial infarction - comes in two levels of severity. Non-st-elevation (nstemi) and st-elevation (stemi) which refer to changes on an ekg and broadly reflect if an arterial occlusion is total or subtotal.

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How high will the ck-mb be elevated if there is a myocardial infarction?

Depends: The elevation of ck-mb is in direct proportion to the size of the infarction. The highest I personally have ever seen was about 1000 but that is very unsual. Also, ck-mb will rise as a % of the total circulating ck. Normall ck-mb is less than 1.5% of total ck. After infarction, ck-mb will go to anywhere between 2.5-15% of total ck.

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I was wondering is angina pectoris and myocardial infarction the same disease?

I was wondering is angina pectoris and myocardial infarction the same disease?

Not: Angina means your heart isn't receiving enough oxygen to meet its needs. However, it's reversible. Mi means that the deficiency in circulation is so severe and prolonged that there has been irreversible heart damage with cell injury and death.

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Does asthma lead to myocardial infarction?

Does asthma lead to myocardial infarction?

It can if...: Asthma can lead to a heart attack if you have coronary arterial disease. The stress from an asthma attack can lead to an mi, or the inflammation associated with uncontrolled asthma might lead to rupture of the plaque in the coronary artery, again leading to mi. This might be the mechanism that explains the increase in heart attacks during high pollution days... But might not.

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Is myocardial infarction caused by an infection?

Is myocardial infarction caused by an infection?

No: Well I shouldn't be so definite. Who would have thought that ulcers would be caused by infection. There has been noted to be an increase in heart attacks related to certain infections including those involving the gums, so the cause and effect question has been raised. It has been suggested that inflammation plays a role. But at this time I think most doubt the cause and effect relationship.

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How does hypertension cause myocardial infarction?

How does hypertension cause myocardial infarction?

Atherosclerosis: Depends on one's personal risks smoking, obesity, hypertension, hyperlipemia, diabetes, family history. Simply, one blocks the feeding coronary artery to part of the heart muscle and low flow, or no flow causes ischemia which cause death of the heart cells, which is a heart attack! myocardial infarction is the medical term. Ekg and lab tests show the damage.

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Is myocardial infarction caused by atherosclerosis?

Is myocardial infarction caused by atherosclerosis?

Atherosclerosis: Most myocardial infarctions are associated with atherosclerotic disease

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What is acute coronary syndrome myocardial infarction?

What is acute coronary syndrome myocardial infarction?

Continuum: Both are a result of inadequate blood supply to the heart muscle. Acute coronary syndrome means that the imbalance is sufficient to cause symptoms that prompt aggressive intervention, but may not result in permanent heart damage; a myocardial infarction implies that overt heart damage has occurred, hence positive markers of tissue damage.

Dr. Linda Callaghan
3 Doctors shared insights

Infarction (Definition)

When the blood supply of a tissue is compromised by whatever mechanism, the tissue will stop working and if blood flow is not restored, the tissue will eventually die ("infarct", both verb and noun). The clinical picture that runs with development of an infarct ("heart attack"; ...Read more


Dr. Creighton Wright
3,964 Doctors shared insights

Heart Attack (Definition)

A life-threatening condition in which the blood vessels that supply the heart becomes occluded and thus the heart itself is not longer receiving any blood flow. Without this blood flow, the heart muscle dies and cannot pump blood to the ...Read more