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Doctor insights on: How Accurate Is A D Dimer In Ruling Out Pulmonary Embolisim

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How accurate is a d dimer in ruling out pulmonary embolisim?

How accurate is a d dimer in ruling out pulmonary embolisim?

Is good to rule out: As dr. Fronzaglia said, a low d-dimer is very accurate in ruling out clots like pulmonary emboli. Unfortunately, a high d-dimer doesn't tell you a thing except that more testing needs to be done. ...Read more

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D Dimer (Definition)

D-diner is a breakdown product from blood clots. It can be found elevated in certain conditions like pulmonary embolus (blood clot which travels to the lung) deep venous thrombosis (blood clot in deep vein of legs usually) and disseminated intravascular coagulation (diffuse clot formation from severe infection which ...Read more


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Can you tell me how accurate is a d dimer in ruling out a pulmonary embolisim?

Can you tell me how accurate is a d dimer in ruling out a pulmonary embolisim?

Depends.....: If a d-diner is normal, then pulmonary embolism is unlikely. However, if the d-diner is elevated, it can be from many different causes, including but not limited to a pe, or pulmonary embolism. If the d-diner is elevated and the clinical scenerio fits, then pe must be ruled out with further testing, like a chest ct angiogram. ...Read more

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Can the d-dimer test be accurate enough to diagnose a pulmonary embolism?

Can the d-dimer test be accurate enough to diagnose a pulmonary embolism?

Used for ruling out : The d-dimer test is most helpful in ruling out pulmonary embolism. If it is negative, the chance of having a pe is quite small. If it is positive, then a further confirmatory test is still necessary to make the diagnosis of pe. ...Read more

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Can you tell me in january, they done just a CT scan on my lungs and showed nothing and sent me home. I had accurate is the d-dimer for clots?

Can you tell me in january, they done just a CT scan on my lungs and showed nothing and sent me home. I had accurate is the d-dimer for clots?

Not accurate : A negative d dimer is helpful for ruling out pulmonary clots. A positive d dimer is basically useless as it can occur from a variety of reasons. A CT angiogram is close to the gold standard for determining whether there are clots in lungs. Regardless of what the d dimer showed, if the CT was negative and they used contrast for the CT then you are in the clear. ...Read more

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Would a normal d dimer rule out DVT or pulmonary embolism?

For the most part: The d-dimer test is nonspecific to blood clots and can be elevated for other reasons however it is almost always elevated with acute (new) blood clots. If a person has risk factors (smoking, immobility, obesity, recent orthopedic surgery, cancer) and symptoms, an ultrasound should be ordered regardless of the d-dimer. In a low-risk patient a negative d-dimer effectively rules out acute DVT/PE. ...Read more

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Is a d-dimer enough to rule out a DVT or pulmonary embolism. suffering from chest pain,shortness of bteath, n burning n swelling in legs n back?

Is a d-dimer enough to rule out a DVT or pulmonary embolism.  suffering from chest pain,shortness of bteath, n burning n swelling in legs n back?

Yes.: Yes, D-diner has a high negative predictive value. That means that if the test is negative, it strongly predicts the ABSENCE of DVT. Iss positive predictive value is lower; that is, D-dimmer may be positive but the patient not have DVT. ...Read more

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Hi! I have symptoms of pulmonary embolism, but d-dimer test is normal. Is it possible to have pulmonary embolism with normal d-dimer?

D-dimer: Yes a d-dimer can miss a PE if the clot is small or if the test is done too soon or if the test is done incorrectly. The diagnosis is a combination of history, exam, labs, and radiology studies as well as clinical judgement. ...Read more

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6 months ago hd a .91 d-dimer which led to CT scan for pulmonary emboli. Was negative. But was never told cause of d dimer or shown concern. Normal?

Pulmonary emboli: A d dimer test may be elevated due to a number of conditions including pulmonary emboli. I would suggest checking with your doctor for follow up and determining the normal d dimer range for your test. One aspect of diagnosing pe is a history and physical exam which may lead to clinical suspicion of the diagnosis. ...Read more

Dr. Daniel Saurborn
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Respiratory (Definition)

Respiratory is also known as Respiratory system. Pertaining to the work of breathing done by the chest ...Read more