•Clots in ~ blood vessels have the right to obstruct blood flow and cause blockages in organs•Types: venous thromboembolism, pulmonary embolism, coronary thrombosis•Treatment contains a mix of medical and also surgical procedures, and medications•Involves cardiovascular medicine, interventional cardiology


You are watching: A blood clot attached to the interior wall of a vein or artery

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Blood clots are usually harmless. They form whenever we reduced or scrape ours skin or bump right into something and get a bruise. However, as soon as blood clots type within blood ship they deserve to obstruct blood flow, a condition called thrombosis. That can mean trouble. If a clot in one artery breaks complimentary and travels v the circulatory system, that can cause blockages affecting the heart, lungs, and other organs—potentially shutting lock down.

The results can be deadly. Thrombosis affects approximately 900,000 civilization in the United states per year and kills as much as 100,000.

“At Yale Medicine, patients v suspected thrombosis acquire evaluated really quickly,” states Michael Remetz, MD, a Yale medication interventional cardiologist. Because that blood clots that affect the heart: “That is valuable time as soon as the love is gift damaged. If a huge part that the heart is affected, irreversible heart damage results, or it have the right to be fatal.”


There room three types—venous thromboembolism, pulmonary embolism, and coronary thrombosis. Venous thromboembolism occurs in veins or arteries, most generally in the legs. When a blood clot travels come the lungs and also causes a blockage of one artery, it’s dubbed a pulmonary embolism. Coronary thrombosis is a blockage of an artery in the heart, which deserve to lead come a love attack.


Normal blood clots happen whenever yes an injury come the cell lining blood vessels. However, abnormal blood coagulation can type if there room unusual sports in blood flow, such as those brought about by problems including valvulitis and also aneurysm, or since of conditions that cause blood to clot unnecessarily, such together leukemia or factor V mutation.

Coronary thrombosis can occur when arteries end up being clogged through cholesterol and fat, make it complicated for blood to circulation through.

Additional risk components for blood coagulation include:

weight problems pregnant sitting for expanded periods that time cigarette smoking oral contraceptives Injury or surgery period (increased danger for world over period 60) A family background of blood coagulation Chronic inflammatory diseases

Symptoms of thrombosis in veins (which usually affect the legs) include: swelling, pain,, and cramping.

Symptoms of pulmonary embolism (a blood clot that has actually traveled right into the lungs) incorporate shortness the breath, chest pain, and coughing.

Symptoms of coronary thrombosis (a blood gerean that develops in the heart) encompass severe ache in the chest and also arm, sweating and trouble breathing.




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The blood clots have the right to be treated with a mix of medical and also surgical procedures. The first line the defense is blood-thinning medications, such together warfarin, which can prevent brand-new clots from forming while the body works to break up present clots. Aspirin, a blood thinner, is additionally used. A course of medications referred to as thrombolytics have the right to dissolve clots even an ext quickly, yet can rise the risk of bleeding.

Doctors may also opt to execute surgery to eliminate the blood clot.


At Yale Medicine, our cardiology team is consisted of of leading researchers in the field. They command clinical trials for medicines that can not however be obtainable on the market and also use their expertise to far better diagnose and also treat blood clots.

In addition, for blood coagulation affecting the heart, our cardiologists work closely with the emergency departments of area hospitals to treat patient as easily as possible. They rush patients come our catheterization lab either by ambulance or helicopter, whereby our experienced clinicians perform diagnostic procedures, such as state-of-the arts blood tests and cardiac catheterization. The latter is a procedure wherein a catheter is threaded into the impacted veins and also arteries to clean them.

“The first two hours of a heart trouble is once there is most damages to the heart,” claims Dr. Remetz.