The number one complication of atrial fibrillation (AFib) is heart failure, which occurs about twice as often as a stroke in people with the condition.
If you have atrial fibrillation (Afib), your heart has episodes when it beats irregularly. The condition can cause troubling symptoms and serious medical complications, including blood clots that can lead to stroke and heart failure.
If your atrial fibrillation occurs with a fast heartbeat, it could be a concern because it can cause heart failure. With heart failure, your heart cannot pump blood though through your body well. Fluid collects in the lungs and causes trouble breathing, swelling, coughing and extreme tiredness.
Most blood clots from AFib go to your brain, but not all. If a blood clot is in your arm or leg, you'll most likely notice: Tenderness. Swelling.
AF is associated with an increased risk of stroke, heart failure (HF), and all‐cause mortality. Recent data suggest that AF is also independently associated with an increased risk of sudden cardiac death (SCD). In patients with established AF treated with anticoagulation, SCD accounts for >20% of all deaths.
The 30-second rule in atrial fibrillation (AFib) is a widely used, though debated, guideline defining an AFib episode as an irregularly irregular heart rhythm lasting at least 30 seconds on an ECG, used to distinguish it from shorter, less significant atrial arrhythmias and help guide diagnosis and treatment, particularly for stroke risk and ablation success. While a standard for trials and device monitoring, newer research suggests shorter runs of AF might still be clinically important, prompting ongoing discussion about whether this threshold accurately reflects stroke risk and overall AF burden.
Permanent Atrial Fibrillation: The Final Stage
At this stage, anti-arrhythmic treatments are ceased, and the treatment strategy changes to 'rate control' therapies. These bring the AFib rhythm back to an acceptable heart rate for both managing symptoms and to prevent long-term strain on the heart.
A personal survey of patients with atrial fibrillation (AF), one of the most important causes of irregular heartbeats, has found that the majority of triggers for the condition are easily modifiable lifestyle choices, including alcohol, caffeine, exercise and lack of sleep.
The five key warning signs of a deep vein blood clot (DVT) often include swelling, pain/tenderness, warmth, redness/discoloration, and sometimes visible veins, usually in one leg or arm, while signs of a pulmonary embolism (PE) like sudden shortness of breath or chest pain are medical emergencies. Recognizing these symptoms early is crucial, as DVT can travel to the lungs, causing a potentially fatal PE.
Many people with AFib are prescribed blood-thinning medication (anticoagulants) to help prevent the formation of blood clots. Before 2010, warfarin (sold under the brand names Coumadin and Jantoven) was the only drug available for AFib patients.
The lack of blood supply can cause dizzy spells or lightheadedness. Afib dizziness may be mild or severe, and may cause nausea or vomiting. Severe episodes can even lead to temporary loss of consciousness, known as fainting or syncope.
Unlike a typical cough caused by a cold or allergies, cardiac cough may occur due to fluid buildup in the lungs when the heart is unable to pump effectively. Common symptoms associated with cardiac cough include persistent coughing, extreme fatigue, difficulty breathing, and other signs often overlooked.
The results of the study “found that microvascular changes – trouble in the smaller vessels of the eyes or kidneys – appeared to be linked to the presence of atrial fibrillation.”
Atrial fibrillation (Afib) is often intertwined with other health conditions. Afib alone can coexist with conditions like high blood pressure, diabetes, and sleep apnea. Together, these comorbidities can increase the severity of symptoms and overall health risks, making effective management even more important.
But, if you've been in AFib or experiencing an irregular heartbeat for 24-to-48 hours with no break, you should call your doctor. If symptoms worsen and you feel lightheaded, dizzy or faint, or your heart rate doesn't come down, you have chest pain or trouble breathing, you should visit the ER.
Don't Ignore These 8 Blood Clot Warning Signs
However, each person may experience symptoms differently:
You can check for signs of a blood clot (DVT) at home by looking for swelling, redness, warmth, and pain (like a pulled muscle) in one leg, especially the calf, compared to the other. Gently feel for tenderness or firmness and compare calf size (over 1 inch difference is a concern). However, home checks aren't definitive; seek immediate medical care if you suspect DVT, especially with shortness of breath, as it can be life-threatening.
Difficulty breathing, especially when lying down or when exercising. Chest pain. Dizziness or fainting. Heart palpitations, or the feeling that your heart is skipping a beat, fluttering, pounding, or beating too hard or too fast.
AFib Causes
Usually, AFib results from damage to the heart's electrical system from other health conditions, such as: Blockage of a lung artery (pulmonary embolism)
If you have atrial fibrillation (AFib), you should avoid triggers like excessive alcohol, caffeine, smoking, and stimulants, manage stress, limit salt, get enough sleep, and talk to your doctor about certain medications (like decongestants) and exercise routines, stopping immediately if you feel dizzy or short of breath to prevent episodes and complications like stroke.
Current guidelines support the well-established clinical practice that patients who present with atrial fibrillation (AF) of less than 48 hours duration should be considered for cardioversion, even in the absence of pre-existing anticoagulation.
Stage 1: At risk for AFib. Stage 2: Pre-AFib. Stage 3: AFib. Stage 4: Permanent AFib.
Predicting the illness trajectory can be difficult.
Indicators of people likely to have end-stage heart failure include: Frequent hospital admissions. Poor response to treatment and severe breathlessness at rest (New York Heart Association class IV). Presence of cardiac cachexia.