Intermittent claudication: Symptoms, Diagnosis, and Proven Treatments
Intermittent claudication is a warning signal from the legs: walking brings on a tight, cramping, or aching pain—then rest makes it fade. Many people...
Intermittent complete heart block: Causes, Risk Factors, and What It Means
Intermittent complete heart block can feel like your body “cuts out” for a moment—lightheadedness, a pause in awareness, or sudden weakness that comes and...
Interrupted aortic arch: Symptoms, Emergency Signs, and Treatment
Interrupted aortic arch is a rare heart defect present at birth in which the main “highway” carrying blood from the heart to the body...
Interventricular conduction block: Bundle Branch Block Types, Symptoms, and Risks
Interventricular conduction block is a finding that tells you the heart’s electrical “wiring” is delivering the signal to the pumping chambers more slowly or...
Interventricular septal aneurysm: What It Means, Symptoms, Diagnosis, and Treatment
An interventricular septal aneurysm is a bulging “pouch” in the wall that separates the heart’s two pumping chambers. It is most often found by...
Intra-atrial reentrant tachycardia: Causes, Symptoms, Diagnosis, and Treatment Options
Intra-atrial reentrant tachycardia is a fast, repeating heartbeat pattern that starts in the upper chambers of the heart. For some people it feels like...
Intracardiac mass: Thrombus vs Tumor vs Vegetation, Symptoms, and Risks
An intracardiac mass is a broad term that simply means “something seen inside the heart” on imaging—most often on an echocardiogram (ultrasound of the...
Intracardiac shunt: Types, Symptoms, Diagnosis, and Treatment Options
An intracardiac shunt is an opening or pathway that lets blood move between the right and left sides of the heart when it normally...
Intracardiac thrombus: Causes, Symptoms, Diagnosis, and Treatment
An intracardiac thrombus is a blood clot inside the heart. It can form quietly and be found by chance, or it can cause sudden,...
Intracranial arterial dissection, Causes, Risk Factors, Warning Signs, and Management
Intracranial arterial dissection happens when a small tear forms inside an artery within the skull, allowing blood to track into the vessel wall and...
Intramural aortic hematoma, symptoms, diagnosis, and emergency treatment
An intramural aortic hematoma is a dangerous type of “bruise” inside the wall of the aorta—the body’s main artery. Instead of blood flowing only...
Intrapartum cardiomyopathy: Symptoms, Diagnosis, Emergency Care, and Recovery
Intrapartum cardiomyopathy is a rare but serious form of pregnancy-related heart weakness that shows up during labor or around delivery. It is closely related...
Intrathoracic aortic aneurysm: Causes, Size Thresholds, Imaging, and Treatment Options
An intrathoracic aortic aneurysm is a slow, often silent widening of the body’s main artery inside the chest. An aneurysm (a weakened bulge in...
Ion channelopathy: Types, Common Triggers, Symptoms, and Key Warning Signs
Ion channelopathies are conditions caused by faulty “gates” in cells that control the flow of charged particles like sodium, potassium, calcium, or chloride. When...
Ischemia: Causes, Risk Factors, Diagnosis, and Treatment Options
Ischemia happens when part of the body does not get enough blood flow to meet its needs. Without adequate blood, tissues receive less oxygen...
Ischemic cardiomyopathy: Causes, Coronary Disease Links, Diagnosis, and Treatment
Ischemic cardiomyopathy is a form of long-term heart weakness caused by poor blood supply to the heart muscle over time. Instead of one brief...
Ischemic heart disease: Causes, Risk Factors, Symptoms, Diagnosis, and Treatment
Ischemic heart disease happens when the heart muscle does not get enough blood to meet its needs. For many people, it builds quietly over...
Ischemic peripheral vascular disease: Causes, Symptoms, Diagnosis, and Treatment Options
Ischemic peripheral vascular disease describes reduced blood flow to the limbs—most often the legs—because arteries have narrowed or become blocked. Many people first notice...
Ischemic stroke, causes, risk factors, recovery, secondary prevention
An ischemic stroke happens when blood flow to part of the brain is blocked. Without oxygen-rich blood, brain cells begin to fail within minutes,...
Haemangioma: Types, Early Signs, Diagnosis, and Best Treatments
A haemangioma is a common growth made up of extra blood vessels. Many people first hear the word when a bright red “strawberry mark”...
Heart attack: Symptoms, Diagnosis, Emergency Treatment, and Recovery
A heart attack is a sudden emergency where part of the heart muscle is starved of blood. The usual reason is a blockage in...
Heart failure: Types, Symptoms, Diagnosis, and Evidence-Based Treatment
Heart failure doesn’t mean the heart has “stopped.” It means the heart can’t keep up with the body’s needs as efficiently as it should....
Heart murmur: Causes by Age, Symptoms, Diagnosis, and Next Steps
A heart murmur is a sound a clinician hears through a stethoscope when blood moves through the heart or nearby vessels. Many murmurs are...
Heart Palpitations: Causes, Red Flags, Diagnosis, and Treatment Options
Heart palpitations are the uncomfortable awareness of your heartbeat—like a flutter, a thump, a skipped beat, or a sudden racing sensation. They can be...