Unstable angina: Difference between revisions

Revision as of 15:42, 9 February 2025

A type of chest pain related to heart disease

Unstable angina is a condition characterized by unexpected chest pain and is a form of acute coronary syndrome (ACS), which is a group of conditions associated with sudden, reduced blood flow to the heart. It is a medical emergency and requires immediate attention.

Signs and symptoms

Unstable angina presents with chest pain or discomfort that:

Occurs at rest or with minimal exertion
Is severe and of new onset
Occurs with a crescendo pattern (i.e., it is more severe, prolonged, or frequent than previously experienced)

Other symptoms may include shortness of breath, nausea, sweating, and dizziness.

Causes

Unstable angina is primarily caused by the rupture of an atherosclerotic plaque in a coronary artery, leading to partial blockage of blood flow. This can result in reduced oxygen supply to the heart muscle, causing chest pain. Risk factors include:

Diagnosis

Diagnosis of unstable angina involves a combination of:

Clinical evaluation of symptoms
Electrocardiogram (ECG) to detect changes in heart activity
Blood tests to measure cardiac biomarkers such as troponin
Coronary angiography to visualize blood flow in the coronary arteries

Treatment

Immediate treatment for unstable angina includes:

Oxygen therapy
Nitroglycerin to relieve chest pain
Aspirin to prevent further blood clotting
Beta blockers to reduce heart workload
Anticoagulants such as heparin

Long-term management may involve lifestyle changes, medications, and possibly coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI).

Prognosis

The prognosis for individuals with unstable angina varies. Early treatment can improve outcomes significantly, but the condition can lead to myocardial infarction (heart attack) or sudden cardiac death if not managed promptly.

Prevention

Preventive measures include:

Adopting a heart-healthy diet
Regular physical activity
Smoking cessation
Managing stress
Regular medical check-ups to monitor and control risk factors

Related pages

References

"Unstable Angina." Mayo Clinic, Mayo Foundation for Medical Education and Research, 2023.
"Unstable Angina." American Heart Association, 2023.

@@ Line 1: / Line 1: @@
-'''Unstable angina''' is a condition that is characterized by chest pain or discomfort due to coronary heart disease. It occurs when the heart muscle doesn't get as much blood (and thus oxygen) as it needs. This usually happens because one or more of the heart's arteries is narrowed or blocked, also known as ischemia.
+{{Short description|A type of chest pain related to heart disease}}
+{{Use dmy dates|date=October 2023}}
-== Causes ==
+'''Unstable angina''' is a condition characterized by unexpected chest pain and is a form of [[acute coronary syndrome]] (ACS), which is a group of conditions associated with sudden, reduced blood flow to the heart. It is a medical emergency and requires immediate attention.
-Unstable angina is caused by the formation of a blood clot that partially or totally blocks an artery in the heart. The most common cause is atherosclerosis, a disease in which a fatty material called plaque builds up on the inner walls of the coronary arteries. Other causes include blood clots, coronary artery spasm, or extreme physical exertion.
-== Symptoms ==
+==Signs and symptoms==
-The symptoms of unstable angina are similar to those of a heart attack and may include chest pain or discomfort, which may travel from the chest to the jaw, neck, arms, back or even the teeth. The patient may also experience shortness of breath, sweating, dizziness, nausea, and fatigue.
+Unstable angina presents with chest pain or discomfort that:
+* Occurs at rest or with minimal exertion
+* Is severe and of new onset
+* Occurs with a crescendo pattern (i.e., it is more severe, prolonged, or frequent than previously experienced)
-== Diagnosis ==
+Other symptoms may include [[shortness of breath]], [[nausea]], [[sweating]], and [[dizziness]].
-The diagnosis of unstable angina is made based on the patient's medical history, a physical examination, and several tests. These tests may include an electrocardiogram (ECG), blood tests, a chest X-ray, a coronary angiogram, or a stress test.
-== Treatment ==
+==Causes==
-The treatment of unstable angina includes medications to reduce the heart's demand for oxygen and to prevent blood clots from forming. It may also include a procedure to restore blood flow to the heart, such as angioplasty and stenting, or coronary artery bypass surgery.
+Unstable angina is primarily caused by the rupture of an [[atherosclerotic plaque]] in a coronary artery, leading to partial blockage of blood flow. This can result in reduced oxygen supply to the heart muscle, causing chest pain. Risk factors include:
+* [[Smoking]]
+* [[High blood pressure]]
+* [[High cholesterol]]
+* [[Diabetes]]
+* [[Obesity]]
+* [[Sedentary lifestyle]]
-== Prognosis ==
+==Diagnosis==
-The prognosis for unstable angina is generally good with treatment. However, it is a serious condition that needs immediate medical attention and can lead to a heart attack or cardiac arrest if not treated promptly.
+Diagnosis of unstable angina involves a combination of:
+* Clinical evaluation of symptoms
+* [[Electrocardiogram]] (ECG) to detect changes in heart activity
+* Blood tests to measure cardiac biomarkers such as [[troponin]]
+* [[Coronary angiography]] to visualize blood flow in the coronary arteries
-== See also ==
+==Treatment==
-* [[Angina pectoris]]
+Immediate treatment for unstable angina includes:
+* [[Oxygen therapy]]
+* [[Nitroglycerin]] to relieve chest pain
+* [[Aspirin]] to prevent further blood clotting
+* [[Beta blockers]] to reduce heart workload
+* [[Anticoagulants]] such as [[heparin]]
+Long-term management may involve lifestyle changes, medications, and possibly [[coronary artery bypass grafting]] (CABG) or [[percutaneous coronary intervention]] (PCI).
+==Prognosis==
+The prognosis for individuals with unstable angina varies. Early treatment can improve outcomes significantly, but the condition can lead to [[myocardial infarction]] (heart attack) or [[sudden cardiac death]] if not managed promptly.
+==Prevention==
+Preventive measures include:
+* Adopting a heart-healthy diet
+* Regular physical activity
+* Smoking cessation
+* Managing stress
+* Regular medical check-ups to monitor and control risk factors
+==Related pages==
+* [[Stable angina]]
+* [[Myocardial infarction]]
 * [[Coronary artery disease]]
-* [[Heart attack]]
-* [[Ischemic heart disease]]
-== References ==
+==References==
-<references />
+* "Unstable Angina." Mayo Clinic, Mayo Foundation for Medical Education and Research, 2023.
+* "Unstable Angina." American Heart Association, 2023.
+[[File:A_man_having_a_Heart_Attack.png|thumb|A man experiencing chest pain, a common symptom of unstable angina.]]
 [[Category:Cardiology]]
-[[Category:Angina]]
+[[Category:Ischemic heart diseases]]
-[[Category:Coronary artery disease]]
-[[Category:Heart diseases]]
-{{stub}}