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Doctor insights on: Arteriovenous Malformations Air Embolism

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What are pulmonary arteriovenous malformations (avm's)?

What are pulmonary arteriovenous malformations (avm's)?

Nidus of vessels: Abnormal communication between a pulmonary artery and vein with no normal capillary bed in between them. ...Read more

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Dr. Geoffrey Rutledge
107 doctors shared insights

Air Embolism (Definition)

Blood vessels are made to carry blood - liquid. A small amount of air in a vessel is not usually a big deal as it will be absorbed into the blood. Larger volumes of air (10 mL or larger) can be significant to block blood flow in that vessel. That is bad in the brain (stroke) and really bad in the heart because ...Read more


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Why coarctation of aorta in infants, causing blood flow from pulmonary artery to aorta?

Why coarctation of aorta in infants, causing blood flow from pulmonary artery to aorta?

PDA : It would only do that if the coarctation was severe and there was a patent ductus arteriosus (pda) which is a connecting artery between the aorta and pulmonary artery, leading to blood flow from pa to the descending aorta. ...Read more

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Arterial venous malformation can it cause psychosis?

Arterial venous malformation can it cause psychosis?

One report: I did find one report of an avm (arteriovenous malformation) involving the vein of galen associated with psychotic symptoms: http://tinyurl.Com/mqzwd2j this is not a usual presentation, though -- just to say it can happen. Please do not assume that having psychotic symptoms means you have an avm. It doesn't! having these symptoms does mean you need evaluation and treatment, though. ...Read more

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What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?

What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?

Lack of blood flow: A ventilation perfusion scan is a test for a blood clot in the lungs, or pulmonary embolism. If there is a blood clot, an area of the lung will not be perfused, but will be ventilated, and therefore a mismatch will be seen. ...Read more

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How could pulmonary hypertension in mitral stenosis prevent pulmonary edema?

How could pulmonary hypertension in mitral stenosis prevent pulmonary edema?

Less flow to lungs: If the pressure in the pulmonary artery is high enough, the right ventricle's ability to pump bood to the lungs is diminished. Less blood flow to the lungs means that there is less fluid to leak out into the air spaces ( alveoli). ...Read more

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Are there any connections between the deep vein thrombosis and pulmonary embolism?

Are there any connections between the deep vein thrombosis and pulmonary embolism?

Cause and effect: Deep vein thrombosis is a blood clot that forms in the veins, often in the legs, but also in other places. If a clot breaks loose and travels to the lungs, it is called pulmonary embolism. A pulmonary embolism can be fatal. ...Read more

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Are venous aneurysms dangerous? Superficial

Venous aneurysm: it could be a problem the bigger question is the correct diagnosis is it a true venous aneurysm which not that common or is it a venous malformation should be evalauted especailly if it is enlarging ...Read more

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Is pulmonary hypertension always present in atrial septal defect?

Is pulmonary hypertension always present in atrial septal defect?

No: People with asds do not always have pulmonary hypertension. An untreated ASD can potentially lead to pulmonary hypertension over a long period of time. But it's not always present. ...Read more

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What's an arteriovenous malformation from?

What's an arteriovenous malformation from?

Congenital: Arteriovenous malformation or avm is an abnormal connection between veins and arteries, usually congenital. ...Read more

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Pulmonary emboli or blood clots in the lung; deadly? Very dangerous?

Pulmonary emboli or blood clots in the lung; deadly?  Very dangerous?

Yes. : Pulmonary embolism is often fatal but it really depends on the size of the clot that travels to the lung. Small clots may not even be noticed but large ones completely stop lung circulation and exchange of oxygen resulting in rapid death. ...Read more

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Are atrial septal defects or atrial septal aneurysms ever the result of infection?

Are atrial septal defects or atrial septal aneurysms ever the result of infection?

Yes but very rarely: It is possible to have an infection in the heart which weakens the atrial septum (causing an aneurysm) or even creates a complete holes (atrial septal defects). This is a very rare finding though and the illness that caused it is generally quite severe. ASDs and atrial septal aneurysms are very common though and most just occur during fetal (i.e. baby) development . ...Read more

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Can small children get pulmonary embolism?

Can small children get pulmonary embolism?

Yes: Development of pulmonary embolisms depends on many factors. But small children certainly can develop them if they have specific conditions. Please see your child's physician to discuss your specific issues. ...Read more

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What causes multiple bilateral pulmonary emboli thrombosis of the pelvic veins?

What causes multiple bilateral pulmonary emboli thrombosis of the pelvic veins?

Few things: Recent surgery, prolonged immobilization, long distance traveling, cancer, and smoking cause traditional DVTs. If bilateral veins are compressed, an organ like the uterus can compress the veins but you will probably suffer from large fibroids . Blood disorders or other abnormal masses can also cause a mechanical compression at a higher location than both those veins. Emboli can reach both lungs. ...Read more

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Can endocarditis CAUSE atrial septal aneurysm with a pfo or ASD shunt?

Can endocarditis CAUSE atrial septal aneurysm with a pfo or ASD shunt?

No: A cerebral embolism can happen in someone with an undiagnosed PFO or ASD +/- atrial septal aneurysm. Endocarditis causes valve degeneration and/ or there could be a coronary embolism causing a heart attacks. ...Read more

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Whats a heart defect called supracardiactotal anomalous pulmonary venous return?

Whats a heart defect called supracardiactotal anomalous pulmonary venous return?

Abnormal lung veins: The pulmonary veins are the vessels that normally bring blood with oxygen back to the heart from the lungs. Supracardiac tapvr is when these veins drain to the innominate vein which eventually brings that blood back to the right side of the heart rather than the left. This requires surgical repair. Babies born with this usually have much lower than normal oxygen levels and appear blue. ...Read more

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Can having systemic MRSA cause brain aneurysms, heart aneurysms, or broken heart syndrome?

Can having systemic MRSA cause brain aneurysms, heart aneurysms, or broken heart syndrome?

Very rare: I am no aware of a brain or heart aneurism cause by a sepsis or bacteremia by mrsa. Can cause endocarditis, meningitis and encephalitis. Takotsubo cardiomyopathy(broken heart syndrome) is a rare cause of heart failure. Usually cause by a very intense emotional event. Severe infection, by some reference, a very rare cause. With actual evidence base data, i will answer no to your question. ...Read more

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How are arteriovenous malformations and other vascular lesions detected?

How are arteriovenous malformations and other vascular lesions detected?

Studies...: Angiography can detect the majority of vascular lesions; although a good number of them are detected while undergoing numerous other procedures for other things(ct scans, ultrasounds, etc.). ...Read more

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Is it bad luck or bad genes that made me develop arteriovenous malformations?

Answer is complex: Avm are communications which in variable degrees exist in different parts of the body. Most are congenital (you are born with) others can be related to injury or trauma . It also depends how large the avm are and if they cause symptoms besides the esthetic concern. ...Read more

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What can you do if you have an arteriovenous malformations?

What can you do if you have an arteriovenous malformations?

Treatment: Depending on the size and location, treatment cold be from nothing to resection, emboli satin, gamma knife radiation. ...Read more

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How will arteriovenous malformations affect my health going forward?

How will arteriovenous malformations affect my health going forward?

More information: Arterio-venous malformations at the basic level is an abnormal connection to an artery and vein. They can occur anywhere in the body and can be something you are born with (congenital) or acquired, usually through penetrating trauma. They can cause problems with bleeding or shunting of blood or allowing bacteria or clots to pass through them. The symptoms relate to where they are located. ...Read more

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What are pulmonary arteriovenous malformations (avm's)?

Nidus of vessels: Abnormal communication between a pulmonary artery and vein with no normal capillary bed in between them. ...Read more

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What kind of doctor sees somebody for arteriovenous malformations?

Neurosx: Assuming u mean brain, since can get avm anywhere. Treatment options are neurosurgeon for surgery, or interventional radiology for embolization. Common to have embolization prior to surgery. Upon finding an avm on a scan, you will be referred to a specialist. ...Read more

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How do arteriovenous malformations damage the brain and spinal cord?

Hemorrhage: Most of the damage of an arteriovenous malformation occurs when the blood vessel or vessels are spontaneously ruptured and bleed into the brain, causing pressure and damage to the brain. The same can occur with an av malformation in the brain stem or spine. ...Read more

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I have a question about arteriovenous malformations; are they birth defects or hereditary?

I have a question about arteriovenous malformations; are they birth defects or hereditary?

Can be either: They can be either spontaneous or they can be inherited. Sometimes entire families are effected by certain vascular malformations. ...Read more

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How do you detect arteriovenous malformations?

Where?: Arteriovenous malformations are also common in the digestive tract especially in patients with chronic renal failure (found during endoscopies). They also may be present in the lungs.Vascular surgeons may produce artificial av fistulas for the purpose of hemodialysis. Theoretically angiography by ct or mra should find them. ...Read more

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What are the tests for arteriovenous malformations?

Angiography: noninvasive imaging studies (CTA, MRA, etc) are excellent for the screening and overall evaluation of arteriovenous malformations. Catheter angiography remains necessary for fine analysis and treatment planning, in particular for anomalies involving the brain and spinal cord. Catheter angiography also plays an important role in the treatment of vascular malformations (endovascular therapy). ...Read more

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What are the symptoms of arteriovenous malformations?

What are the symptoms of arteriovenous malformations?

Swelling: Usually swelling of the involved limb due to venous engorgement. Can also have limb deformity and length descrepency. Varicose veins can also be present. Best diagnostic test is MRI of effected area. ...Read more

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What are the health consequences of arteriovenous malformations?

What are the health consequences of arteriovenous malformations?

Size matters: Avms can bleed or cause strokes, either of which can cause a huge range of problems depending on location and size. Some avms are so large that they press on nearby brain tissue like a tumor would. Much of the health consequences depend in the size of the avms. ...Read more

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What are the causes of Dural Arteriovenous Malformations? (DAVM)

Dural avm: Unlike other brain AVMs which are congenital, dural AVMs are believed to be acquired. Dural AVMs are not infectious or inherited. Occasionally, a dural AVM has been reported following cranial surgery.The reasons for the development of dural AVMs are unknown. They may result from a blood clot in a large venous channel which then forms a connection between a dural artery and vein during the repair. ...Read more

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My lover has just been diagnosed with arteriovenous malformations. I am worried but she acts like it is not a problem. Who can tell me what it means?

Knot of blood vessel: Cerebral avms are a knot of blood vessels in which there is a direct connection between the arteries and veins. They are often congenital but can develop after head trauma. They are often discovered during the work-up for a seizure and are a risk for brain bleeds. Depending on the size and location, they can be treated surgically, endovascularly or with radiation - or a combination of those. ...Read more

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Can you tell me something about arteriovenous malformation?

Can you tell me something about arteriovenous malformation?

Brain Blood Vessels: In the brain , an avm is typically a twisted tangle of blood vessels where is an abnormal connection between arteries and veins. These can also be present in other parts of the body. Brain avm's carry a risk of bleeding if left untreated. They can also become symptomatic due to seizures and steal phenomenon (altered blood flow). ...Read more

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How can someone get rid of an avm? Arteriovenous malformation?

Neurosurgery consult: The first thing to do after being diagnosed with and arteriovenous malformation is to see a neurosurgeon. They will evaluate and indicate if it requires surgery which is many times the management of choice. There are certain cases where only observation, treatment for seizures if they are happening and for headaches is recommended. The plan of action needs to be recommended by the specialist. ...Read more

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How come I have renal arteriovenous malformation, but nobody else in the family has it?

Renal AVM: Because it is a very rare disorder. The estimated incidence based on large autopsy studies is 1 in 30000 people. ...Read more

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Is renal arteriovenous malformation curable?

Is renal arteriovenous malformation curable?

No: No real treatment unles very symptomatic or riskk oof losing a kidney although the likelyhood of this necessity is small as long as the kidney functions normally. However as you have two kidneys you may not know when and if this kidney faiils without continual followup with your physician and routin urin evaluations. ...Read more

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Dr. Katharine Cox
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Embolus (Definition)

Usually a blood clot that migrates from one area of the body to another. Most commonly a clot from a leg vein to the lung . It can also pertain to a clot, or atheromatous material that moves from one segment to another, such as cholesterol material in a carotid lesion moving into the ...Read more


Dr. Jefferson Chen
165 doctors shared insights

Arteriovenous Malformation (Definition)

Is an abnormal connection and proliferation of the connection ...Read more