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Query: UMLS:C0019079 (hemoptysis)
 6,129 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Deep vein thrombosis (DVT) and pulmonary embolism (PE) are distinct but related aspects of the same dynamic disease process known as venous thromboembolism (VTE). An estimated 200,000 new cases occur in the United States every year, including 94,000 with PE, resulting in an incidence of 23 per 100,000 patients per year-cases. Without treatment, pulmonary embolism is associated with a mortality rate of approximately 30%, causing nearly 50,000 deaths per year. Moreover, based on post-mortem studies, two-thirds of the patients with pulmonary emboli remain undiagnosed. Clinically, PE may present as (1) isolated dyspnea, (2) pleuritic pain and/or hemoptysis, and (3) circulatory collapse. However, clinical history and examination can be notoriously misleading in reaching a diagnosis. A number of acquired etiologic risk factors (predispositions) are associated with a tendency to develop VTE. These include increasing age, immobilization, surgery, trauma, hospital or nursing home confinement, malignancy, neurologic disease with extremity paresis, as well as certain types of oral contraception and hormone replacement therapy. In addition, a variety of genetic risk factors, such as factor V Leiden, protein S or C deficiency have also been identified. However, in at least half of the instances, no predisposing factors can be identified (idiopathic PE). In the majority of cases thromboemboli originate in the deep veins of the calf or pelvis. The pathogenic conditions for VTE comprise a triad of factors and include (1) venous stasis, (2) hypercoagulable states, and (3) vascular endothelium injury. Occlusion of pulmonary arteries has variable and transient clinical and pathophysiologic consequences, involving both mechanical and reflex effects of vascular occlusion with a consecutive perfusion defect as well as the release of vasoactive and other inflammatory mediators. The objectives of this article are to present an overview of the etiologic and pathogenic factors promoting VTE as well as the pathophysiologic and inflammatory processes following PE.
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PMID:Principle mechanisms underlying venous thromboembolism: epidemiology, risk factors, pathophysiology and pathogenesis. 1258 87

BACKGROUND Deep vein thrombosis (DVT) is a type of venous thromboembolism with diverse clinical and environmental risk factors. Very few cases of DVT with multiple high risk factors have been reported. Here, we report an uncommon DVT case with multiple etiological causes, including appendicitis/appendectomy, morbid obesity, immobilization, positive phosphatidylserine IgG, and heterozygous factor V Leiden mutation. CASE REPORT A 43-year-old female was brought to the emergency room because of 2-week history of pain and swelling and ultrasound revealing evidence of DVT in the right leg. One month ago, she underwent an exploratory laparotomy because of subacute appendicitis. After surgery, the patient stayed at home in bed with very limited activity. She did not have a cough, hemoptysis, chest pain, or shortness of breath. She was morbidly obese, and had a past medical history of diabetes, hypertension, and hyperlipidemia. A full coagulation workup was completed, including Protein C, Protein S, and antiphospholipid antibody, as well as factor V and prothrombin gene mutation screen. Her D-dimer was positive. Computed tomography (CT) angiography of the lungs ruled out major emboli but was unable to rule out minor emboli. A heterozygous factor V Leiden R506Q mutation was detected. Of interest was a significantly positive phosphatidylserine IgG with a value of over 42. She was started with enoxaparin (120 mg, twice a day), and warfarin was added on day 2 when pulmonary embolism was ruled out by CT angiography. The International Normalized Ratio (INR) was monitored daily to adjust warfarin dose. CONCLUSIONS Multiple etiological factors present in this patient may have contributed to her lower-limb DVT, including appendicitis/appendectomy, morbid obesity, immobilization, positive phosphatidylserine IgG, and factor V Leiden mutation. Therefore, it is important to follow the complete workup for hypercoagulable states. This can help with diagnosis and therapy, and also give insight into the pathogenicity, which can help with prevention of recurrence and severe complications of DVT.
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PMID:An Uncommon Case of Lower Limb Deep Vein Thrombosis with Multiple Etiological Causes. 2834 60