16900 Coronary Spasm

Overview

A coronary artery spasm is a sudden, temporary squeezing of the muscle layer inside one or more of the arteries that supply blood to your heart. This narrows the artery and reduces blood flow, which can cause chest pain (known as angina). Unlike a heart attack caused by a fatty blockage, a spasm can happen even if your arteries look clear, and it usually goes away on its own or with treatment.

Coronary spasm is far less common than angina caused by clogged arteries, but it is not rare. It may be underdiagnosed because the symptoms can come and go.

It can affect people of any age, but it is more often seen in adults under 50, and it can occur in people who have few, if any, of the usual heart risk factors. It is sometimes more common in women who are approaching or have experienced menopause, but men can experience it too.

Symptoms

Common symptoms

• Chest pain or pressure that occurs mainly at rest, often between midnight and early morning
• Pain that may spread to the neck, jaw, left arm, or back
• Discomfort that might feel like tightness, squeezing, or a burning sensation
• Shortness of breath, a clammy feeling, or sweating with the chest pain
• Episodes that usually last from a few minutes to 20 minutes, sometimes longer

Symptoms in children

• Coronary spasm is extremely rare in children. Chest pain in a child is usually caused by other problems, but any chest pain should be assessed by a healthcare professional.

Symptoms in older adults

• In older adults, chest pain can be less typical, such as a vague discomfort, tiredness, or feeling short of breath. It may also be mistaken for indigestion, which is why any new or unusual symptoms should be checked quickly.

Causes

Main causes

• A temporary tightening (spasm) of the smooth muscle within the artery wall
• Abnormal function of the inner lining of the blood vessel, which makes it oversensitive to triggers
• Direct triggers such as cold air, emotional stress, lack of sleep, alcohol withdrawal, or certain recreational drugs

Risk factors

• Smoking or using tobacco (including secondhand smoke)
• High stress, anxiety, or sudden emotional upset
• High blood pressure or high cholesterol
• Diabetes or insulin resistance
• Family history of heart disease
• Migraine headaches or Raynaud’s phenomenon (cold-sensitive hands and feet), which suggest a tendency toward blood vessel spasms

When to see a doctor

See a doctor urgently if:

• Seek same-day medical care if you have new episodes of chest pain, especially if they happen at rest or wake you up.
• If you already have a heart condition and your chest pain changes in pattern or becomes harder to control, see a doctor urgently.

Book a routine appointment if:

• If you’ve had mild, occasional chest discomfort that comes and goes, book a routine appointment to have it evaluated.
• If you have risk factors such as smoking, diabetes, or high blood pressure, talk to your doctor about your heart health.

Diagnosis

Your doctor will first talk with you about your symptoms, medical history, and risk factors. Because spasms happen intermittently, they can be hard to catch. Your doctor may order several tests to look for evidence of reduced blood flow during an episode, and to rule out other causes of chest pain.

Tests that may be done

• Electrocardiogram (ECG/EKG) – a quick, painless test that records the electrical activity of your heart, sometimes taken during an episode of chest pain
• Holter monitor – a portable heart monitor you wear for 24 to 48 hours to capture symptom episodes at home
• Exercise stress test – to see how your heart responds to physical activity, though a spasm can also happen at rest
• Coronary angiography – a special X-ray test where a thin tube is placed in the artery and a contrast dye is injected to see the inside of the arteries; sometimes used with a provocation test to trigger a spasm in a controlled setting
• Blood tests – to check for substances released during a heart attack and to look for risk factors

What to expect at your appointment

Most of these tests are outpatient procedures, meaning you do not need to stay in the hospital overnight. You may also be referred to a cardiologist (heart specialist). Do not stop any medicines before your tests without discussing it with your doctor.

Treatment

Treatment aims to prevent spasms, improve blood flow to the heart, and reduce the risk of serious complications. This usually involves a combination of medicines, lifestyle changes, and regular check-ups.

Self-care at home

• Stop smoking and avoid secondhand smoke – this is the single most important change for coronary spasm.
• Learn your triggers (cold, stress, lack of sleep) and develop ways to avoid them.
• Stay warm in cold weather; protect your chest and face when outdoors.
• Practice relaxation techniques such as slow breathing, mindfulness, or gentle yoga.
• Take all prescribed medicines exactly as directed, even when you feel well.

Medical treatments

Doctors commonly prescribe medicines that relax and widen the blood vessels, such as a pill you keep under your tongue to treat an acute episode, and other daily medicines that prevent the arteries from going into spasm. The choice of medicine depends on your health and how often your symptoms occur. Never start or stop these medicines without your doctor’s guidance.

When is surgery considered?

Surgery is not commonly needed for coronary spasm. In persistent cases where medicine is not effective, or if a spasm causes significant blockage, a doctor may consider a procedure such as inserting a small mesh tube (stent) to keep an artery open, but this is only for certain situations.

Living with this condition

With coronary spasm, you can live an active life by learning to manage symptoms. Keep a diary of your chest pain episodes: what you were doing, the time of day, how long it lasted, and what helped. Bring this information to your appointments – it helps your care team make better decisions.

Lifestyle tips

• Get enough sleep and keep a regular sleep schedule.
• Limit alcohol and caffeine, especially if they seem to trigger your symptoms.
• Avoid extreme cold – and warm up gradually if you exercise outdoors.
• Find healthy ways to manage stress, such as talking to someone, hobbies, or relaxation exercises.

Diet and exercise

Eat a heart-healthy diet rich in vegetables, fruits, whole grains, lean protein, and healthy fats. Regular physical activity is beneficial, but talk to your doctor about what intensity is safe for you, especially if you experience symptoms during exercise. The goal is gradual, consistent movement like walking, cycling, or swimming.

Mental health and emotional wellbeing

Living with any heart condition can create anxiety, fear of recurrence, or depression. These feelings are valid and common. Speaking with a counsellor or joining a support group can help. If you are struggling with your mental health, speak to your healthcare provider – they can direct you to resources. If you are in crisis or have thoughts of harming yourself, please contact your local emergency number or crisis support line right away.

Prevention

You can significantly reduce your risk of coronary spasm by avoiding tobacco, controlling blood pressure and cholesterol, managing stress, and steering clear of recreational drugs. Even if you have already had a spasm, these steps help prevent another one.

Vaccines

Keep your vaccinations up to date. Respiratory infections such as flu and pneumonia can put extra strain on your heart, so staying protected is an important part of managing your overall heart health.

Screening programmes

Regular health screenings for blood pressure, cholesterol, and diabetes can help catch problems early. If you have a family history of heart disease, mention it to your doctor so they can decide if earlier or more frequent screening is right for you.

Complications

If left untreated

• Repeated spasms can lower the supply of oxygen to the heart muscle and lead to an irregular heart rhythm (arrhythmia)
• A prolonged spasm can cause a heart attack (myocardial infarction), even in arteries with little or no fatty plaque
• In severe cases, a spasm can trigger a life-threatening event such as cardiac arrest (sudden loss of heart function)

Long-term outlook

The outlook for coronary spasm is generally positive with proper diagnosis and treatment. Most people become symptom-free or have very few episodes with the right medicine and lifestyle adjustments. It is important to stay in touch with your healthcare team and report any changes promptly – this keeps your heart safe and helps you live a full life.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.