进食障碍：综合患者指南

Overview

Atrial fibrillation (AFib or AF) is a common heart rhythm problem in which the upper chambers of the heart (the atria) beat irregularly and often too fast. This can reduce how well the heart pumps blood and allow blood to pool, raising the chance of clots that may travel to the brain and cause a stroke. AFib can be occasional (paroxysmal), persistent, or long-standing. With modern treatments and lifestyle steps, most people with AFib can control symptoms, lower stroke risk, and stay active.

Signs & Symptoms

Some people feel no symptoms and learn they have AFib during a routine check. Others notice clear changes. Common symptoms include:

• A fluttering, racing, or pounding heartbeat (palpitations)
• Feeling tired or weak, especially with activity
• Shortness of breath
• Dizziness, lightheadedness, or near-fainting
• Chest discomfort or pressure
• Reduced ability to exercise
• Anxiety related to the irregular rhythm

Symptoms can come and go or stay constant. If you have risk factors such as high blood pressure, heart disease, or older age, report new or changing symptoms promptly.

Causes & Risk Factors

AFib often develops when the heart’s electrical system is disrupted by age, heart disease, or other conditions. Key risk factors include high blood pressure, coronary artery disease, heart valve problems, heart failure, prior heart surgery, obesity, sleep apnea, diabetes, thyroid disorders, heavy alcohol use, and family history. Triggers for episodes can include stress, caffeine, alcohol, dehydration, or illness. Not everyone with risk factors develops AFib, and some people have no clear cause (lone AFib).

Diagnosis

Doctors diagnose AFib with a medical history, physical exam, and heart rhythm recording. An electrocardiogram (ECG or EKG) is the main test. If episodes are infrequent, a Holter monitor, event monitor, or wearable patch may be used for days to weeks. Blood tests check for thyroid issues, electrolytes, and other factors. An echocardiogram (ultrasound of the heart) looks at heart structure and function. Your doctor may also assess stroke risk using tools such as the CHA2DS2-VASc score to decide on blood thinners.

Treatment & Management

Management has three main goals: prevent stroke, control heart rate or restore normal rhythm, and treat underlying conditions. Your plan is personalized.

• Stroke prevention: Many people need an anticoagulant (blood thinner) such as apixaban, rivaroxaban, dabigatran, edoxaban, or warfarin. Aspirin alone is usually not enough for AFib stroke prevention.
• Rate control: Medicines like beta-blockers (e.g., metoprolol) or calcium-channel blockers (e.g., diltiazem) slow the heart rate so the heart can fill and pump better.
• Rhythm control: Antiarrhythmic medicines or procedures such as electrical cardioversion or catheter ablation may restore and maintain normal sinus rhythm, especially if symptoms are bothersome.
• Lifestyle and risk-factor care: Treating high blood pressure, sleep apnea, obesity, diabetes, and alcohol excess improves outcomes.
• Procedures: Catheter ablation can be highly effective for selected patients. In some cases a pacemaker or left atrial appendage closure device may be considered.

Living With It

Most people with well-managed AFib lead full, active lives. Focus on consistent medicine use, regular follow-up, heart-healthy habits, and knowing your personal triggers. Track symptoms and heart rate if advised. Discuss exercise, travel, and procedures with your care team. Emotional support matters—anxiety about the condition is common and treatable. Shared decision-making with your cardiologist or electrophysiologist helps match treatment to your goals and preferences.