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Pulmonary emboli. Medlineplus: pulmonary embolism. Pulmonary embolism - wikipedia, the free encyclopedia.

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Pulmonary emboli. 000 pregnancies. The mechanism of DVT is venous stasis, decreasing fibrinolytic activity, and increased procoagulant factors.Oral contraceptives and estrogen replacementEstrogen-containing birth control pills have increased the occurrence of venous thromboembolism in healthy women. The risk is proportional to the estrogen content and is increased in postmenopausal women on hormonal replacement therapy. The relative risk is 3-fold, but the absolute risk is 20-30 cases per 100,000 persons per year.MalignancyMalignancy has been identified in 17% of patients with venous thromboembolism. The neoplasms most commonly associated with PE, in descending order of frequency, are pancreatic carcinoma; bronchogenic carcinoma; and carcinoma of the genitourinary tract, colon, stomach, and breast.Other recognized risk factors include the following:Stroke Indwelling venous catheters Previous history of venous thromboembolism Congestive heart failureFractures of the long bone Obesity Pregnancy Varicose veinsInflammatory bowel disease   DIFFERENTIALS Section 4 of 11 Author Information Introduction Clinical Differentials Workup Treatment Medication Follow-up Miscellaneous Pictures Bibliography Anemia Angina Pectoris Aortic Stenosis Atrial Fibrillation Cardiogenic Shock Chronic Obstructive Pulmonary Disease Cor Pulmonale Emphysema Herpes Zoster Mitral Stenosis Myocardial Infarction Myocardial Ischemia Myocarditis Pneumonia, Bacterial Pneumonia, Community-Acquired Pneumonia, Viral Pneumothorax Septic Shock Shock, Distributive Shock, Hemorrhagic Sudden Cardiac Death Syncope Toxic Shock Syndrom pulmonary emboli		  

Medlineplus medical encyclopedia: pulmonary embolus

Bstruct the pulmonary vessels. The most common cause of a pulmonary embolism is a blood clot in the veins of the legs, called a deep vein thrombosis (DVT). Many clear up on their own, though some may cause severe illness or even death. Risk factors for a pulmonary embolus include: Prolonged bed rest or inactivity (including long trips in planes, cars, or trains) Oral contraceptive use Surgery (especially pelvic surgery) Childbirth Massive trauma Burns Cancer Stroke Heart attack Heart surgery Fractures of the hips or femur Persons with certain clotting disorders may also have a higher risk. Symptoms Return to top Symptoms of pulmonary embolism may be vague, or they may resemble symptoms associated with other diseases. Symptoms can include: Cough Begins suddenly May produce bloody sputum (significant amounts of visible blood or lightly blood streaked sputum) Sudden onset of shortness of breath at rest or with exertion Splinting of ribs with breathing (bending over or holding the chest) Chest pain Under the breastbone or on one side Especially sharp or stabbing; also may be burning, aching or dull, heavy sensation May be worsened by breathing deeply, coughing, eating, bending, or stooping Rapid breathing Rapid heart rate (tachycardia) Additional symptoms that may be associated with this disease: Wheezing Clammy skin Bluish skin discoloration Nasal flaring Pelvis pain Leg pain in one or both legs Swelling in the legs (lower extremities) Lump associated with a vein near the surface of the body (superficial vein), may be painful Low blood pressure Weak or absent pulse Lightheaded pulmonary emboli


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pulmonary emboli as many as 85% of patients with PI but is nonspecific pulmonary emboli, occurring also in heart failure pulmonary emboli, shock pulmonary emboli, pregnancy pulmonary emboli, kidney or liver disease pulmonary emboli, anemia pulmonary emboli, pneumonia pulmonary emboli, and carcinoma and after surgical procedures. Blood levels of fibrin split products pulmonary emboli, such as D-dimer pulmonary emboli, may rise after PE pulmonary emboli, whether PI occurs or not. However pulmonary emboli, specificity is low because false-positive results are common and levels are elevated in other conditions pulmonary emboli, such as the postoperative state. Extreme caution has been recommended in the use of D-dimer tests because data are limited. Some authorities suggest that when clinical suspicion is low pulmonary emboli, a normal D-dimer may increase the likelihood that no thromboembolic disease is present. Lung perfusion scans use IV injection of 20- to 50-& 181;m particles of biodegradable albumin labeled with technetium 99m. These particles ultimately lodge in the small precapillary arterioles of both lungs. Nearly 100% of the particles remain in the lungs pulmonary emboli, except when right-to-left shunting is present pulmonary emboli, either at pulmonary emboli.

pulmonary emboli R larger pulmonary embolisms and 21% for subsegmental pulmonary embolisms (21% of total pulmonary embolisms). pulmonary emboli, Overall sensitivity for pulmonary embolism was 69% and specificity was 86%. pulmonary emboli, The combined results from a number of studies suggest that the sensitivity of helical CT for isolated subsegmental pulmonary embolism is about 30% pulmonary emboli, and that such emboli account for about 20% of symptomatic pulmonary embolism. pulmonary emboli, pulmonary emboli, pulmonary emboli, pulmonary emboli, pulmonary emboli, Because patients with isolated subsegmental pulmonary embolism are also likely to have a substantial risk of recurrence pulmonary emboli, these emboli cannot be dismissed as clinically unimportant. Taken together pulmonary emboli, these findings suggest the following results with helical CT. First pulmonary emboli, intraluminal filling defects in lobar or main pulmonary arteries have a positive predictive value for pulmonary embolism of at least 85% and can be interpreted in the same way as a high-probability ventilation& 150;perfusion scan. Second pulmonary emboli, intraluminal defects that are confined to segmental pulmonary emboli, and particularly subseg.

pulmonary emboli Ot (thrombus). The functions of the arteries of the lungs are to carry enough blood containing oxygen and nutrients to keep the lung tissue healthy and to carry carbon dioxide to the lungs for removal from the body (see Biology of the Lungs and Airways: Exchanging Oxygen and Carbon Dioxide). However pulmonary emboli, when a large artery to the lung is blocked by an embolus pulmonary emboli, the amount of blood supplied may be insufficient pulmonary emboli, eventually causing lung tissue to die. About 10% of people with pulmonary embolism suffer some lung tissue death (called pulmonary infarction). Sometimes the body breaks up small clots quickly pulmonary emboli, keeping damage to a minimum. Large clots take much longer to disintegrate pulmonary emboli, so more damage is done. Large clots may cause sudden death by blocking so much of the lung arteries that the oxygen supply to the body is inadequate to sustain life or by placing an excessive strain on the heart. The prevalence of pulmonary embolism in people admitted to the hospital is about 1%. When an autopsy is perf.

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pulmonary emboli Risk factors for pulmonary embolus The risk factors include: prolonged bed rest or inactivity using oral contraceptives (birth control pills) surgery child birth cancer stroke heart attack heart surgery fractures of the hips or femur Back to Top Treatment for pulmonary embolus Emergency treatment and hospitalization are necessary. Definitive treatment consists of dissolving the clot by thrombolytic therapy. Anticoagulant therapy is preventive by inhibiting further clot formation. Thrombolytic therapy (clot-dissolving medication) includes streptokinase, urokinase, or TPA. Anticoagulation therapy (clot-preventing medication) consists of heparin by intravenous infusion initially, then oral warfarin (Coumadin), or subcutaneous heparin may be started concurrently. Oxygen therapy is required to maintain normal oxygen concentrations until the acute injury to the lungs has resolved. Back to Top How can you prevent pulmonary embolus? Early detection and treatment of deep vein thrombosis (clots

| Primary pulmonary hypertension symptom | Pulmonary vein isolation | Pulmonary function | Pulmonary ventilation | Pulmonary physician | Pulmonary artery catheter | Pulmonary nodule |

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