Is Nstemi the same as unstable angina?
Non-ST-elevation myocardial infarction (NSTEMI), ST-elevation MI (STEMI), and unstable angina are the three traditional types of ACS. However, the widespread use of the high-sensitivity troponin test has changed the diagnosis of unstable angina to NSTEMI in almost all patients formerly diagnosed with unstable angina.
Does unstable angina show up on ECG?
Unstable angina results from acute obstruction of a coronary artery without myocardial infarction. Symptoms include chest discomfort with or without dyspnea, nausea, and diaphoresis. Diagnosis is by ECG and the presence or absence of serologic markers.
How is myocardial infarction classified?
The type of acute myocardial infarction also was categorized as ST-elevation myocardial infarction or non–ST-elevation myocardial infarction as defined in the universal definition. Patients with new (or presumably new) left bundle branch block were designated as having an ST-elevation myocardial infarction.
What does NSTEMI mean?
A non-ST-elevation myocardial infarction (NSTEMI) is a type of heart attack that usually happens when your heart’s need for oxygen can’t be met.
How can you tell the difference between myocardial infarction and unstable angina?
The distinguishing feature between unstable angina and non-STEMI is the presence of elevated cardiac markers, such as troponin, which implies myocardial damage. Patient history alone is insufficient to make a diagnosis of acute coronary syndrome.
Where does angina hurt?
Angina symptoms include chest pain and discomfort, possibly described as pressure, squeezing, burning or fullness. You may also have pain in your arms, neck, jaw, shoulder or back.
What are the main causes of myocardial infarction?
A heart attack, also called a myocardial infarction, happens when a part of the heart muscle doesn’t get enough blood. The more time that passes without treatment to restore blood flow, the greater the damage to the heart muscle. Coronary artery disease (CAD) is the main cause of heart attack.