A patient guide covering activity, diet, medicines, warning signs, cardiac rehabilitation, driving, work, family support and the questions most patients are hesitant to ask.

Every week, I meet patients who have just come through a heart attack, and their families sitting beside them with the same look on their faces. Relief that the emergency is over, and worry about what comes next. This guide is my attempt to answer that worry in one place. I have written it the way I speak to my own patients in the clinic, in plain language, without medical jargon that leaves you more confused than before.

A heart attack, or myocardial infarction, which happens when the blood supply to a part of the heart muscle is suddenly blocked, usually by a clot forming over a narrowed artery. The heart muscle downstream of that block gets starved of oxygen and begins to get damaged.

How much damage happens depends heavily on how quickly the blockage is opened, which is why we call the first hour after symptoms begin the golden hour. Whether you were treated with angioplasty and a stent, with clot dissolving medicines, or with open heart bypass surgery, the recovery principles that follow are largely similar, and I will point out the differences where they matter.

• ECG (electrocardiogram): a quick test that records the electrical activity of your heart and tells us where and how severe the blockage is.
• Troponin test: a blood test that detects a protein released when heart muscle is injured. It confirms a heart attack and helps track its severity.
• Angiography: a dye based imaging test that shows exactly where your arteries are blocked.
• Angioplasty and stenting: a thin tube is guided to the blocked artery, a balloon opens it, and a small mesh tube called a stent is placed to keep it open.
• Open heart bypass surgery: used when blockages are extensive or complex, where a healthy blood vessel from elsewhere in your body is used to reroute blood flow around the blocked artery.

• Rest is important, but complete bed rest is not recommended. Short walks inside the house, starting from day one or two after you reach home, help your circulation and your recovery.
• Avoid heavy lifting, carrying loads, strenuous housework, or climbing several flights of stairs repeatedly during this period.
• If you underwent open heart surgery, the breastbone takes about six to eight weeks to heal. Avoid pushing, pulling, or lifting anything heavier than a few kilograms until your surgeon clears you.
• Avoid driving for at least two to four weeks after an uncomplicated heart attack, and longer if you had surgery or complications. Your reflexes and concentration may not be fully reliable, and a sudden chest symptom while driving can be dangerous to you and others.
• Avoid air travel until your cardiologist gives clearance, usually after the first two weeks for straightforward cases, longer for surgical patients or those with complications.
• Do not resume strenuous physical work, gym training, or two wheeler riding on long routes without symptoms being checked first. Many patients feel fine and go back to physically demanding routines within days, only to land back in the emergency room.
• Sexual activity can usually be resumed once you can climb two flights of stairs or take a brisk walk without chest discomfort or breathlessness, generally around two weeks for uncomplicated cases and four to six weeks after open heart surgery. If you are unsure, ask me directly at your follow up visit rather than guessing.

• Cardiac rehabilitation is a structured, supervised exercise and education programme designed specifically for heart patients. It is not the same as going to a regular gym. If it is available near you, I strongly recommend enrolling, since it lowers the risk of future cardiac events and helps rebuild confidence safely.
• Begin with daily short walks and gradually increase duration and pace over several weeks, guided by how you feel rather than by comparing yourself to others.
• Breathing exercises are particularly useful in the first two weeks after open heart surgery, to keep the lungs clear and support gradual mobility.
• Stop immediately if you feel chest pain, unusual breathlessness, palpitations, or dizziness, and inform your doctor even if the symptom settles quickly on its own.
• Most patients can work up to thirty minutes of moderate activity most days of the week within a few months, but this timeline should always be set by your treating cardiologist based on your specific case.

• Deep fried food and repeatedly reheated cooking oil
• Processed and packaged snacks, canned food, and instant food
• Excess salt, pickles, papad, and salty snacks
• Sugary sweets, bottled drinks, and sweetened beverages
• Tobacco in every form and alcohol

• Green leafy vegetables and seasonal fruits
• Whole grains and millets instead of refined flour
• Lean protein such as grilled chicken, fish, and dals
• Nuts and seeds in moderate quantity
• Cooking oil used in moderation, and rotated rather than reused

• Antiplatelet medicines such as aspirin or clopidogrel keep your blood from clotting inside the stent or artery. Stopping these suddenly, especially soon after a stent, is one of the most dangerous things a patient can do, since it can cause a sudden blockage of the stent itself.
• Statins lower cholesterol and stabilise the plaque inside your arteries, reducing the chance of a future blockage.
• Beta blockers reduce the workload on your heart and control heart rate and blood pressure.
• ACE inhibitors or ARBs help protect the heart muscle and control blood pressure, particularly if the heart attack has weakened the pumping function.

One thing I repeat often to my diabetic patients is that your next heart attack may not announce itself with the crushing chest pain you may have read about. Long standing high blood sugar can damage the nerves that carry pain signals from the heart, a condition called autonomic neuropathy. This means a diabetic patient having a second heart attack may feel only unusual fatigue, breathlessness, indigestion, unexplained sweating, or a sudden rise in blood sugar readings, without any chest pain at all.

If you are diabetic and have already had one heart attack, please do not wait for classic chest pain before seeking help. Any of the following deserves an urgent check: unexplained tiredness that does not improve with rest, breathlessness during routine activity, unexplained sweating, nausea, or a sudden change in your usual sugar control. Elderly patients, and women in general, can also present with these same unusual symptoms rather than typical chest pain, so this advice extends beyond diabetics alone.

Do not wait these out at home, and do not try to self medicate with home remedies. Reach the nearest hospital or call your emergency number right away if you notice:

• Chest pain, pressure, tightness, or heaviness, whether at rest or on exertion
• Pain spreading to the jaw, neck, back, shoulder, or either arm
• Sudden breathlessness, even without chest pain
• Cold sweats with no clear reason
• Sudden dizziness, fainting, or a racing or irregular heartbeat
• Unusual fatigue or nausea, particularly if you are diabetic or elderly

If symptoms appear and then go away on their own, do not assume you are safe. A temporary blockage that opens up briefly can close again. Get evaluated the same day.

• Untreated stress and depression after a heart attack can slow physical recovery and raise the risk of future cardiac events, so this is not a side issue, it is part of your heart treatment.
• Talk to your family, a counsellor, or a support group rather than keeping feelings bottled up.
• If low mood, poor sleep, loss of interest, or hopelessness continues beyond a few weeks, please mention it at your follow up visit. There is effective help available, and asking for it is not a weakness.
• Family involvement in a calm, encouraging way, without constant fear or over restriction, genuinely speeds up recovery. Treat the patient as someone recovering, not someone fragile forever.

• Work: most patients with desk based jobs can return within two to six weeks, while physically demanding jobs may need two to three months. This depends on the severity of your heart attack and how stressful your work environment is, so this timeline should be confirmed by your cardiologist at your follow up visit rather than assumed.
• Driving: avoid personal vehicle driving for at least two to four weeks for uncomplicated cases, and professional or commercial driving typically requires a longer clearance period of around three months.
• Travel: short local travel is usually fine once you are stable and mobile. Long distance travel and flights should wait until your doctor confirms you are fit, generally after the first two to four weeks, and longer after surgery.
• Intimacy: as mentioned earlier, most patients can safely resume sexual activity once they can manage moderate exertion, such as climbing two flights of stairs, without chest discomfort or breathlessness. This is a completely reasonable question to ask your doctor directly, and I would rather you ask than avoid the topic out of hesitation.

• Annual flu vaccination: studies have shown that influenza infection can trigger heart attacks in vulnerable patients, and getting a yearly flu vaccine has been associated with a meaningfully lower risk of heart attack and cardiovascular death in people with existing heart disease. I recommend this to my patients every flu season.
• Cold weather and early mornings: heart attacks are more frequent in cold weather and in the early morning hours, partly due to blood vessels constricting and blood pressure rising. If you exercise outdoors, prefer slightly later mornings during winter, and warm up before stepping out.
• Sleep quality: poor sleep and undiagnosed sleep apnea, where breathing repeatedly stops during sleep and is often marked by loud snoring and daytime tiredness, are linked to higher cardiac risk. If your spouse mentions loud snoring with pauses in breathing, please mention this at your next visit.
• Regular monitoring: keep a simple log of your blood pressure, blood sugar if diabetic, and weight. Sudden weight gain over a few days can be an early sign of fluid retention related to the heart, and should be reported rather than ignored.
• Dental and general infections: untreated infections anywhere in the body add strain on a recovering heart. Do not delay treating a persistent infection because you are focused only on your heart.
• Every follow up matters, even when you feel fine: a heart attack does not end at discharge. Regular follow up visits, blood tests, and periodic evaluations are how we catch problems before they become emergencies again.

• Myth: Only elderly people or heavy smokers get heart attacks. Fact: diabetes, high blood pressure, high cholesterol, stress, poor sleep, sedentary habits and family history can bring on a heart attack at a younger age, even in people who appear fit.
• Myth: A heart attack always causes severe chest pain. Fact: a significant number of heart attacks, especially in diabetics, women and the elderly, present with mild or unusual symptoms rather than classic chest pain.
• Myth: Once treated, you are cured and can return fully to your old lifestyle. Fact: a heart attack is a signal of ongoing coronary artery disease. The medicines and lifestyle changes are lifelong management, not a temporary phase.
• Myth: Exercise after a heart attack is risky and should be avoided. Fact: supervised, gradually increasing physical activity is one of the most effective ways to prevent a second heart attack. Complete inactivity out of fear does more harm than good.
• Myth: If the pain went away on its own, it could not have been serious. Fact: symptoms that resolve on their own can still indicate a dangerous, unstable blockage that needs urgent evaluation.

• Have I taken every prescribed medicine at the correct time, every day this week?
• Have I checked my blood pressure, and blood sugar if diabetic, on a regular schedule?
• Have I done my recommended walk or activity most days, stopping if symptoms appeared?
• Have I avoided fried food, excess salt, and sugary or bottled drinks this week?
• Have I had tobacco or alcohol in any form? If yes, this is the week to plan to stop, with your doctor’s support if needed.
• Have I noticed any new symptoms, however mild, and reported them rather than waiting?
• Have I spoken to my family or a professional if I have been feeling low, anxious, or overwhelmed?