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1.
Rev Mal Respir ; 34(3): 240-243, 2017 Mar.
Article in French | MEDLINE | ID: mdl-27743827

ABSTRACT

INTRODUCTION: Auto-immune pulmonary alveolar proteinosis is a rare disorder characterized by the accumulation of surfactant proteins in the alveoli. CASE REPORT: We report a case of a 41-year-old smoker, presenting initially with acute respiratory failure. Whole lung lavages were effective initially but only for a few weeks. GM-CSF subcutaneous injections were not effective, and then plasmapheresis were tried. CONCLUSION: This is the fifth report of the use of this treatment in auto-immune pulmonary alveolar proteinosis. Plasmapheresis was not effective in our patient.


Subject(s)
Autoimmune Diseases/therapy , Plasmapheresis , Pulmonary Alveolar Proteinosis/therapy , Adult , Autoimmune Diseases/diagnosis , Autoimmune Diseases/pathology , Humans , Male , Pulmonary Alveolar Proteinosis/diagnosis , Pulmonary Alveolar Proteinosis/pathology , Radiography, Thoracic , Respiratory Distress Syndrome/diagnosis , Respiratory Distress Syndrome/etiology , Respiratory Distress Syndrome/pathology , Respiratory Distress Syndrome/therapy , Treatment Failure
3.
Respiration ; 90(3): 220-8, 2015.
Article in English | MEDLINE | ID: mdl-26277885

ABSTRACT

BACKGROUND: There is no recommendation for treating pulmonary hypertension (PH) when associated with chronic obstructive pulmonary disease (COPD). OBJECTIVE: To evaluate the effect of PH-specific therapy in patients with COPD. METHODS: All successive patients with severe PH [mean pulmonary arterial pressure (mPAP) ≥35 mm Hg] and COPD, who received specific PH medication and who underwent right heart catheterization at baseline and after 3-12 months of treatment, were analyzed from a prospective database. RESULTS: Twenty-six patients were included with a median follow-up of 14 months. Mean forced expiratory volume in 1 s was 57 ± 20% of predicted, and mean forced expiratory volume in 1 s/forced vital capacity was 47 ± 12%. Dyspnea was New York Health Association classification stage (NYHA) II in 15%, NYHA III in 81% and NYHA IV in 4%. First-line treatments were endothelin receptor antagonists in 11 patients, phosphodiesterase-5 inhibitors in 11 patients, calcium blocker in 1 patient, combination therapy in 3 patients including 2 with a prostanoid. After 6 ± 3 months, pulmonary vascular resistance decreased from 8.5 ± 3 to 6.6 ± 2 Wood units (p < 0.001), with significant improvement of cardiac index from 2.44 ± 0.43 to 2.68 ± 0.63 liters × min × m-2 (p = 0.015) and mPAP from 48 ± 9 to 42 ± 10 mm Hg (p = 0.008). There was no significant difference in dyspnea, 6-min walking distance, echocardiographic parameters or N-terminal pro-brain natriuretic peptide levels. There was no significant difference in arterial oxygen saturation after 3-12 months of treatment. CONCLUSIONS: Specific PH medications may improve hemodynamic parameters in COPD patients with severe PH. Appropriate prospective randomized studies are needed to evaluate the potential long-term clinical benefit of treatment.


Subject(s)
Hypertension, Pulmonary/drug therapy , Hypertension, Pulmonary/epidemiology , Pulmonary Disease, Chronic Obstructive/drug therapy , Pulmonary Disease, Chronic Obstructive/epidemiology , Vascular Resistance/drug effects , Aged , Bosentan , Cohort Studies , Comorbidity , Female , Follow-Up Studies , France , Hemodynamics/physiology , Hospitals, University , Humans , Hypertension, Pulmonary/diagnosis , Male , Middle Aged , Pulmonary Disease, Chronic Obstructive/diagnosis , Retrospective Studies , Severity of Illness Index , Sildenafil Citrate/therapeutic use , Statistics, Nonparametric , Sulfonamides/therapeutic use , Treatment Outcome , Vasodilator Agents/therapeutic use
4.
Rev Mal Respir ; 32(6): 618-28, 2015 Jun.
Article in French | MEDLINE | ID: mdl-26231412

ABSTRACT

Antisynthetase syndrome is an inflammatory myopathy frequently associated with pulmonary manifestations, especially interstitial lung diseases, and uncommonly pulmonary hypertension. In the context of a suggestive clinical and radiological picture, positive anti-RNA synthetase antibodies confirm the diagnosis. Anti-Jo1, anti-PL7, and anti-PL12 antibodies are the more commonly encountered. The presence of a number of extra-thoracic manifestations in association with pulmonary disease may suggest the diagnosis. These include: myalgia or muscular deficit, Raynaud's phenomenon, polyarthritis, fever, mechanics hands. Serum creatine kinase levels are usually increased. Electromyogram, muscular magnetic resonance imaging or muscle pathology are not mandatory to make the diagnosis. There is a high variability in symptoms and severity, between patients but also during the course of the disease in the same patient. The presence of an interstitial lung disease is a major prognostic factor and an indication for more intensive treatment, principally with systemic corticosteroids with or without immunosuppressive drugs. Improving respiratory physicians' knowledge of this disease, which is often revealed by its pulmonary manifestations, should help diagnosis, therapeutic management, and possibly prognosis.


Subject(s)
Hypertension, Pulmonary/etiology , Lung Diseases, Interstitial/etiology , Myositis/complications , Disease Progression , Humans , Hypertension, Pulmonary/diagnosis , Hypertension, Pulmonary/epidemiology , Lung Diseases, Interstitial/diagnosis , Lung Diseases, Interstitial/epidemiology , Myositis/diagnosis , Myositis/epidemiology , Prognosis , Radiography, Thoracic , Raynaud Disease/diagnosis , Raynaud Disease/epidemiology , Raynaud Disease/etiology
5.
Rev Mal Respir ; 32(4): 435-46, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25908241

ABSTRACT

INTRODUCTION: Alpha-1 antitrypsin, secreted by the liver, inhibits neutrophil elastase. Its deficiency favours the development of emphysema. Restoring a "protective" serum level in deficient patients should make it possible to inhibit the development of emphysema. STATE OF THE ART: Human plasma-derived alpha-1 antitrypsin is a blood-derived drug sold in France under the name Alfalastin(®). The recommended posology is an I.V. administration of 60 mg/kg once a week. Human plasma-derived alpha-1 antitrypsin restores anti-elastase protection in the lower lung and prevents experimental emphysema induced by the elastasis of human neutrophils in hamster. The low number of patients with alpha-1 antitrypsin deficiency is one of the difficulties to perform sufficiently powerful randomised studies. However, randomised studies have reported the efficacy of human plasma-derived alpha-1 antitrypsin perfusions on mortality, FEV1 decline and the frequency of exacerbations. Randomised control trials have demonstrated the efficacy of human plasma-derived alpha-1 antitrypsin perfusions on the loss of lung density assessed by CT scan. CONCLUSION: Augmentation therapy is simple in its conception and implementation, but it is expensive. However, there are currently no other solutions.


Subject(s)
Pulmonary Emphysema/drug therapy , alpha 1-Antitrypsin Deficiency/drug therapy , alpha 1-Antitrypsin/therapeutic use , Animals , Drug Synergism , Humans , Lung/drug effects , Lung/pathology
6.
Rev Mal Respir ; 31(10): 975-91, 2014 Dec.
Article in French | MEDLINE | ID: mdl-25496792

ABSTRACT

Alveolar proteinosis (AP) is a rare disease characterized by alveolar accumulation of surfactant components, which impairs gas exchange. AP is classified into three groups: auto-immune AP defined by the presence of plasma autoantibodies anti-GM-CSF, the most frequent form (90% of all AP); secondary AP, mainly occurring as a consequence of haematological diseases, or following on from toxic inhalation or infections, and genetic AP, which affects almost exclusively children. AP diagnosis is suspected where chest CT-scan demonstrates interstitial lung disease with a crazy paving aspect; and confirmed by bronchoalveolar lavage, which has a milky appearance and contains periodic acid Schiff positive proteinaceous alveolar deposits. The use of surgical lung biopsy to confirm AP is less frequent nowadays. In this context, positive antibodies against GM-CSF indicates an auto-immune etiology of the AP. Concerning management, whole lung lavage is the gold standard therapy. In refractory AP, new treatments are available such as subcutaneous or inhaled GM-CSF supplementation, or rituximab infusions. The clinical course is unpredictable. Spontaneous improvement or even cure can occur, and the 5-year actuarial survival is 95%. The most frequent complications are infectious etiology.


Subject(s)
Pulmonary Alveolar Proteinosis , Animals , Antibodies, Monoclonal, Murine-Derived/therapeutic use , Biopsy , Bronchoalveolar Lavage , Disease Progression , Granulocyte-Macrophage Colony-Stimulating Factor/therapeutic use , Humans , Lung Transplantation , Pulmonary Alveolar Proteinosis/classification , Pulmonary Alveolar Proteinosis/diagnosis , Pulmonary Alveolar Proteinosis/etiology , Pulmonary Alveolar Proteinosis/therapy , Radiography, Thoracic , Rare Diseases , Rituximab
8.
Rev Mal Respir ; 31(5): 430-4, 2014 May.
Article in French | MEDLINE | ID: mdl-24878159

ABSTRACT

INTRODUCTION: Hydroxyurea is an antimetabolite drug used in the treatment of myeloproliferative disorders. Common adverse effects include haematological, gastrointestinal cutaneous manifestations, and fever. Hydroxyurea-induced pneumonitis is unusual. CASE REPORT: A female patient was treated with hydroxyurea for polycythemia vera. She was admitted 20 days after commencing treatment with a high fever, productive cough, clear sputum and nausea. A chest CT-scan showed diffuse ground-glass opacities. Microbiological investigations were negative. The symptoms disappeared a few days after discontinuation of the drug and rechallenge led to a relapse of symptoms. CONCLUSION: Our case and 15 earlier cases of hydroxyurea-induced pneumonitis are reviewed. Two patterns of this disease may exist: an acute febrile form occurring within 1 month of introduction of hydroxyurea and a subacute form without fever. Even if uncommon, one should be aware of this complication of hydroxyurea.


Subject(s)
Antineoplastic Agents/adverse effects , Hydroxyurea/adverse effects , Pneumonia/chemically induced , Aged , Female , Humans , Lymphoproliferative Disorders/complications , Lymphoproliferative Disorders/drug therapy , Pneumonia/diagnosis , Stroke/complications , Stroke/drug therapy
9.
Respir Med ; 108(1): 195-202, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24361163

ABSTRACT

BACKGROUND: The present survey coordinated by the French expert centres for rare pulmonary diseases investigated French pulmonologists' current diagnostic and therapeutic practice for idiopathic pulmonary fibrosis (IPF). METHODS: From December 7, 2011 to February 18, 2012, all French pulmonologists (n = 2608) were contacted. Those who reported following up at least one IPF patient (n = 509) were administered a 26-item questionnaire by phone or e-mail. RESULTS: 509 pulmonologists (41% of responders, 20% of French pulmonologists) were involved in the management of IPF patients. Of those, 36% discussed the cases with radiologists and pathologists. Out of 406 community pulmonologists practicing outside of reference or competence (e.g. expert) centres, 141 (35%) indicated referring patients to those centres. The 2011 international guidelines for IPF were known by 67% of pulmonologists involved in IPF, 84% of whom considered them appropriate for practice. About 58% of patients were diagnosed with mild to moderate IPF as defined by percentage predicted forced vital capacity ≥50% and percentage predicted diffusing capacity of the lung for carbon monoxide ≥35%. Management resulted from multidisciplinary discussion in 36% of the cases. By the end of December 2011, 49% of patients with mild to moderately severe IPF were treated with oral corticosteroids, and 27% received no treatment. CONCLUSIONS: Despite correct awareness of international IPF guidelines, modalities of multidisciplinary discussion and of early diagnosis and management need to be improved through the network of expert centres.


Subject(s)
Glucocorticoids/therapeutic use , Idiopathic Pulmonary Fibrosis/diagnosis , Idiopathic Pulmonary Fibrosis/drug therapy , Pulmonary Medicine , Administration, Oral , Early Diagnosis , France , Health Care Surveys , Humans , Idiopathic Pulmonary Fibrosis/physiopathology , Practice Guidelines as Topic , Pulmonary Diffusing Capacity , Surveys and Questionnaires , Treatment Outcome , Vital Capacity
11.
Rev Mal Respir ; 30(7): 567-71, 2013 Sep.
Article in French | MEDLINE | ID: mdl-24034462

ABSTRACT

INTRODUCTION: Light chain deposition disease is a rare clinical entity characterized by deposition of monoclonal immunoglobulin light chains in organs. The kidneys are almost always affected, while the lung manifestations that have been reported, including nodular or diffuse disease, especially cystic lesions, are unusual. CASE REPORT: We report the case of a 60-year-old man with a diffuse infiltrative lung disease characterized by numerous apical cysts. The diagnosis of light chain deposition cystic lung disease was obtained by surgical lung biopsy. Light chain deposits in the salivary glands were the only extrapulmonary manifestation. Despite 12 chemotherapy cycles, the patient's lung function and radiological appearances worsened. CONCLUSION: This is the fourth case describing a cystic lung disease due to light chain deposition in the literature. It highlights the need for comprehensive investigations so as not to miss this rare cause of cystic lung disease, which appears to be related to a primary pulmonary lymphoproliferative disorder. The only treatment that appears to be effective is lung transplantation.


Subject(s)
Immunoglobulin Light Chains/metabolism , Lung Diseases/etiology , Paraproteinemias/complications , Amyloidosis/complications , Amyloidosis/diagnosis , Fatal Outcome , Humans , Lung Diseases/diagnosis , Male , Middle Aged , Paraproteinemias/diagnosis , Respiratory Insufficiency/diagnosis , Respiratory Insufficiency/etiology
12.
QJM ; 106(6): 523-39, 2013 Jun.
Article in English | MEDLINE | ID: mdl-23515400

ABSTRACT

AIM: To describe the main characteristics and the treatment of cryptococcosis in patients with sarcoidosis. DESIGN: Multicenter study including all patients notified at the French National Reference Center for Invasive Mycoses and Antifungals. METHODS: Retrospective chart review. Each case was compared with two controls without opportunistic infections. RESULTS: Eighteen cases of cryptococcosis complicating sarcoidosis were analyzed (13 men and 5 women). With 2749 cases of cryptococcosis registered in France during the inclusion period of this study, sarcoidosis accounted for 0.6% of all the cryptococcosis patients and for 2.9% of the cryptococcosis HIV-seronegative patients. Cryptococcosis and sarcoidosis were diagnosed concomitantly in four cases; while sarcoidosis was previously known in 14/18 patients, including 12 patients (67%) treated with steroids. The median rate of CD4 T cells was 145 per mm(3) (range: 55-1300) and not related to steroid treatment. Thirteen patients had cryptococcal meningitis (72%), three osteoarticular (17%) and four disseminated infections (22%). Sixteen patients (89%) presented a complete response to antifungal therapy. After a mean follow-up of 6 years, no death was attributable to cryptococcosis. Extra-thoracic sarcoidosis and steroids were independent risk factors of cryptococcosis in a logistic regression model adjusted with the sex of the patients. CONCLUSIONS: Cryptococcosis is a significant opportunistic infection during extra-thoracic sarcoidosis, which occurs in one-third of the cases in patients without any treatment; it is not associated to severe CD4 lymphocytopenia and has a good prognosis.


Subject(s)
Cryptococcosis/complications , Opportunistic Infections/complications , Sarcoidosis/complications , Adolescent , Adult , Antifungal Agents/therapeutic use , CD4 Lymphocyte Count , Cryptococcosis/diagnosis , Cryptococcosis/drug therapy , Cryptococcosis/immunology , Female , Glucocorticoids/therapeutic use , Humans , Immunosuppressive Agents/therapeutic use , Male , Middle Aged , Opportunistic Infections/diagnosis , Opportunistic Infections/drug therapy , Opportunistic Infections/immunology , Prognosis , Retrospective Studies , Sarcoidosis/drug therapy , Sarcoidosis/immunology , Young Adult
13.
Respiration ; 85(2): 156-9, 2013.
Article in English | MEDLINE | ID: mdl-23095475

ABSTRACT

Airway-centered interstitial fibrosis (ACIF) is a distinct type of lung interstitial fibrosis characterized by lesions centered on the airways. Several cases reported in the literature showed little to no effect of corticosteroids and a high mortality rate in the absence of lung transplantation. No other efficient approach is described for the treatment of this type of fibrosis. We report for the first time the case of a 44-year-old patient diagnosed with ACIF on surgical lung biopsy and stabilized with clarithromycin after failure of systemic corticosteroids. We need to confirm this benefit in other patients to ascertain the anti-inflammatory effect of macrolides, which are far less harmful compared to corticosteroids or immunosuppressant drugs.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Clarithromycin/therapeutic use , Lung Diseases, Interstitial/drug therapy , Pulmonary Fibrosis/drug therapy , Adult , Enzyme Inhibitors , Esomeprazole/adverse effects , Glucocorticoids/adverse effects , Humans , Lung Diseases, Interstitial/diagnostic imaging , Male , Prednisolone/adverse effects , Pulmonary Fibrosis/pathology , Radiography , Respiratory Function Tests , Treatment Failure
14.
Rev Pneumol Clin ; 68(5): 295-9, 2012 Oct.
Article in French | MEDLINE | ID: mdl-22749619

ABSTRACT

Intra-alveolar hemorrhage (IAH) could be revealed by acute respiratory failure. The classic association of hemoptysis - anemia - radiological infiltrates is suggestive and has to be confirmed by broncho-alveolar lavage with Golde score. Etiologies included immune and non-immune diseases, with specific treatment for each. We report a case of IAH revealed by acute respiratory distress syndrome and anemia (3 g/dL), related to pulmonary and cerebral vasculitis without renal involvement. The patient was efficiently treated with corticosteroids and cyclophosphamide. This case highlights the critical role of BAL cytological analysis with Golde score, and the need for a rapid and accurate diagnosis in order to guide specific treatment. If histology is needed, renal biopsy even without renal involvement, or surgical lung biopsy is possible.


Subject(s)
Bronchial Diseases/complications , Hemorrhage/complications , Respiratory Distress Syndrome/etiology , Vasculitis/complications , Bronchial Diseases/diagnosis , Bronchial Diseases/diagnostic imaging , Diagnosis, Differential , Female , Hemorrhage/diagnosis , Hemorrhage/diagnostic imaging , Humans , Middle Aged , Pulmonary Alveoli/pathology , Radiography, Thoracic , Respiratory Distress Syndrome/diagnosis , Respiratory Distress Syndrome/diagnostic imaging , Vasculitis/diagnosis , Vasculitis/diagnostic imaging
16.
Rev Mal Respir ; 29(3): 419-25, 2012 Mar.
Article in French | MEDLINE | ID: mdl-22440307

ABSTRACT

INTRODUCTION: The yellow nail syndrome is a rare disorder described for the first time in 1964. The pathophysiology remains unclear. Its definition is based on a clinical triad of yellow nails, lymphoedema and chronic respiratory disorders including pleural effusions and bronchiectasis. CASES REPORTS: We describe a retrospective series of five patients diagnosed with the yellow nail syndrome. All the patients were male, aged from 52 to 71 years (median=56). Three patients were diagnosed with the classic triad, whereas the other two had only yellow nails and bronchiectasis. Yellow nails and chronic sinusitis were present in all five patients. We also report atypical manifestations such as a transudative pleural effusion and facial oedema. The yellow nail syndrome was associated with cancer in two cases. CONCLUSION: More common alternative diagnoses must be excluded. The association with cancer should be explored. The treatment is only symptomatic.


Subject(s)
Yellow Nail Syndrome/diagnosis , Aged , Bronchiectasis/complications , Bronchiectasis/diagnosis , Chronic Disease , Chylothorax/complications , Chylothorax/diagnosis , Humans , Male , Middle Aged , Pleural Effusion/complications , Pleural Effusion/diagnosis , Retrospective Studies , Sinusitis/complications , Sinusitis/diagnosis , Sinusitis/epidemiology , Yellow Nail Syndrome/complications , Yellow Nail Syndrome/epidemiology
17.
Rev Mal Respir ; 28(3): 360-4, 2011 Mar.
Article in French | MEDLINE | ID: mdl-21482342

ABSTRACT

INTRODUCTION: TNF blockers are widely used to treat inflammatory rheumatic diseases and also in the treatment of extrapulmonary sarcoidosis. TNFα plays a major role in the development and persistence of sarcoid granulomata. However, recent studies have reported the involvement of anti-TNF therapies in the development of granulomatosis associated with the clinical and radiological features of sarcoidosis. CASE REPORT: A 54-years-old man with ankylosing spondylitis was treated with etanercept for two years. He was admitted with symptoms of bronchitis associated with radiological evidence of bilateral pulmonary nodules and a right upper lobe infiltrate. Anti-TNF therapy was stopped even though the patient had received 3 months of prophylactic treatment with rifampicin and isoniazid before starting etanercept. Bronchoalveolar lavage excluded infection, particularly tuberculosis. The chest CT-scan showed bilateral pulmonary nodules with peribronchovascular micronodules and enlarged mediastinal lymph nodes. Surgical lung biopsy was performed and revealed non-caseating granulomata. All the data were consistent with a diagnosis of pulmonary sarcoidosis. The patient remained symptomatic despite discontinuation of etanercept for ten months. Corticosteroids were then introduced, leading to a clinical, functional and radiological improvement. CONCLUSION: This case report underlines the importance of studying the pulmonary complications of TNF blockers. The first priority is to exclude tuberculosis but a diagnosis of sarcoid-like granulomatosis has to be considered. Twenty-three cases have been described in the literature to date.


Subject(s)
Antirheumatic Agents/adverse effects , Immunoglobulin G/adverse effects , Sarcoidosis, Pulmonary/chemically induced , Sarcoidosis, Pulmonary/diagnostic imaging , Spondylitis, Ankylosing/drug therapy , Antirheumatic Agents/administration & dosage , Etanercept , Glucocorticoids/therapeutic use , Humans , Immunoglobulin G/administration & dosage , Male , Middle Aged , Radiography , Receptors, Tumor Necrosis Factor/administration & dosage , Sarcoidosis, Pulmonary/drug therapy , Treatment Outcome
19.
Rev Mal Respir ; 26(3): 257-65, 2009 Mar.
Article in French | MEDLINE | ID: mdl-19367199

ABSTRACT

OBJECTIVE: To compare the one year survival after discharge from ICU of patients with chronic obstructive pulmonary disease (COPD) admitted for acute hypercapnic respiratory failure and who required mechanical ventilation. METHODS: Retrospective cohort study on 130 patients, 52 patients were treated with non-invasive ventilation (NIV) and 78 patients with conventional mechanical ventilation (CMV). RESULTS: In 73 patients the cause for respiratory failure could not be identified. Long-term survival was significantly better following NIV than with CMV (p=0.02 by log-rank testing), but the better prognosis associated with use of NIV was not found in patients with no documented cause for the respiratory failure. After adjusting for male gender, age>65 years, simplified acute physiology score II>35, prior long-term home oxygen therapy, treatment with steroids, FEV1<30% of predicted value, body-mass index<21 kg/m2, albumin level<30 g/L, right ventricular failure, ventilator-associated pneumonia and cause of respiratory failure, NIV remained independently associated with better outcomes (adjusted hazard ratio 0.55; 95% CI 0.31-0.97; p=0.04). CONCLUSIONS: Our results suggest that in COPD patients requiring mechanical ventilation and who survived after an ICU stay, the use of NIV is an independent factor associated with a better long-term survival, especially in those with a documented cause of respiratory failure.


Subject(s)
Pulmonary Disease, Chronic Obstructive/mortality , Pulmonary Disease, Chronic Obstructive/therapy , Respiration, Artificial/methods , Aged , Cohort Studies , Female , France/epidemiology , Humans , Intensive Care Units , Male , Middle Aged , Retrospective Studies
20.
Rev Mal Respir ; 25(7): 885-93, 2008 Sep.
Article in French | MEDLINE | ID: mdl-18946418

ABSTRACT

BACKGROUND: After stopping a 3 to 6 months course of oral anticoagulation for a first episode of idiopathic venous thromboembolism (VTE), the risk of recurrent VTE is high (10% per year). In this setting, international guidelines recommend at least 6 months treatment. However, this recommendation is not satisfactory for the following reasons: (1) no randomized trial has compared 6 months to extended duration (2 years) anticoagulation; and (2), even though the frequency of recurrent VTE is similar after pulmonary embolism (PE) and deep vein thrombosis (DVT), the fatality rate of recurrent VTE after PE is higher than that after DVT. METHODS: A French multicentre double blind randomized trial. The main objective is to demonstrate, after a first episode of symptomatic idiopathic PE treated for 6 months using a vitamin K antagonist, that extended anticoagulation for 18 months (INR between 2 and 3) is associated with an increased benefit / risk ratio (recurrent VTE and severe anticoagulant-related bleeding) compared to placebo. The double blind evaluation is ensured using by active warfarin and placebo, and blinded INR. The protocol was approved by the ethics board of the Brest Hospital on the 7th of March 2006. For an alpha risk of 5% and a beta risk of 20%, the estimated sample size is 374 patients. EXPECTED RESULTS: This study has the potential to: (1) demonstrate that the benefit / risk ratio of extended anticoagulation for 18 months is higher than that observed with placebo in patients with a first episode of idiopathic PE initially treated for 6 months, during and after the treatment period; and (2) to validate or invalidate the contribution of isotope lung scans, lower limb Doppler ultrasound and D-Dimer at 6 months of treatment as predictors of recurrent VTE (medico-economic analysis included).


Subject(s)
Anticoagulants/therapeutic use , Pulmonary Embolism/drug therapy , Venous Thromboembolism/drug therapy , Vitamin K/antagonists & inhibitors , Warfarin/therapeutic use , Anticoagulants/administration & dosage , Anticoagulants/adverse effects , Chi-Square Distribution , Data Interpretation, Statistical , Double-Blind Method , Hemorrhage/chemically induced , Humans , Placebos , Practice Guidelines as Topic , Prognosis , Recurrence , Risk Assessment , Time Factors , Warfarin/administration & dosage , Warfarin/adverse effects
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