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Nitric oxide (NO) is present in the upper and lower human airways. Nasal and exhaled levels of NO can be determined by non-invasive techniques using chemiluminescence analysers. NO levels in the upper airways are 10–100-fold higher than in the lower airways. International recommendations for standardized measurement of nasal and exhaled NO have been published recently. Exhaled NO is increased in patients with untreated asthma, and this elevation reflects, at least partially, bronchial inflammation. Measurement of exhaled NO may be useful when the diagnosis is doubtfull and for differentiation from other causes of chronic cough. Nasal NO is usually also increased in asthma but this is related to the frequency of allergic rhinitis in asthmatic patients. However, in patients with nasal polyps and asthma, nasal NO is decreased in proportion to the extent of sinusoidal involvement. Levels of exhaled NO decrease rapidly in asthmatic patients treated with anti-inflammatory drugs. Further studies are needed to establish more precisely the place of exhaled NO measurement in monitoring the control of asthma, especially in comparison with other non-invasive markers of bronchial inflammation. [Copyright &y& Elsevier]

Objective: To explore the accuracy of tricuspid regurgitation velocity (TRV) to right ventricular outflow tract time-velocity integral (TVI RVOT ) ratio by Doppler to determine pulmonary vascular resistance (PVR) in patients with systemic sclerosis (SSc)., Methods: Thirty-five consecutive adult patients with SSc, fulfilling the 2013 European League Against Rheumatism/American College of Rheumatology classification criteria, with sinus rhythm referred for right heart catheterization (RHC), were retrospectively included. All patients underwent a transthoracic echocardiogram (TTE) performed within 24 h of RHC. Patients with SSc were recruited regardless of disease activity, cardiac symptoms, and treatment regimen. Doppler measurements were compared to RHC measurements. A linear regression equation was generated to predict PVR by echocardiogram based on the TRV/TVI RVOT ratio. The accuracy of Doppler measurements for predicting PVR > 3 Wood units was assessed by computing the areas under the receiver-operating characteristic curves., Results: There were 20 (57%) females in the study. The mean age was 65 ± 12 years. Mean and systolic pulmonary arterial pressures were 31 ± 8 and 53 ± 15 mmHg, respectively. There was a good correlation between TRV/TVI RVOT ratio assessed by Doppler and PVR measured by RHC (R = 0.743, p < 0.001). The equation generated by this analysis was the following: PVR by Doppler = 11.3 × (TRV/TVI RVOT ) + 1.7. A cutoff value of 0.21 for TRV/TVI RVOT ratio provided the best sensitivity (86%) and specificity (86%) to determine PVR > 3 Wood units., Conclusion: Our study suggests that TTE using Doppler could be a useful and noninvasive tool for estimating PVR in patients with SSc.

Because of early and effective therapies, an increasing numbers of young people with cystic fibrosis (CF) reach adulthood. Preparing for and maintaining high quality CF care in the adult healthcare is critical for prolonged survival. Because adverse health consequences occur when inadequate transition arrangements are in place, safely transferring patients from pediatric to adult care is a priority. Key features include an early preparation, planning and self-management skills, a coordinated approach and a detailed communication between patients, families, pediatric and adult teams. Formal transition protocols and audits can support the process and be helpful for multidisciplinary teams., (Copyright © 2016 Elsevier Masson SAS. All rights reserved.)

Viral infections are frequent and severe in lung transplant recipients. They frequently occur during the first year after transplantation. We report on a rare case of bilateral adenovirus necrotizing pneumonia with a diffuse alveolar hemorrhage, 4 years after bilateral lung transplantation. The medical evolution was lethal in 72 hours because of respiratory, renal, and cardiac failure. Considering this case and the growing evidence on the severity of adenoviral infections, we call for controlled studies and therapeutic recommendations., (Copyright © 2012 Elsevier Inc. All rights reserved.)

Background: Invasive aspergillosis is a common life-threatening infection in patients with acute leukemia. The presence of building work near to hospital wards in which these patients are cared for is an important risk factor for the development of invasive aspergillosis. This study assessed the impact of voriconazole or caspofungin prophylaxis in patients undergoing induction chemotherapy for acute leukemia in a hematology unit exposed to building work., Design and Methods: This retrospective cohort study was carried out between June 2003 and January 2006 during which building work exposed patients to a persistently increased risk of invasive aspergillosis. This study compared the cumulative incidence of invasive aspergillosis in patients who did or did not receive primary antifungal prophylaxis. The diagnosis of invasive aspergillosis was based on the European Organization for Research and Treatment of Cancer/Mycosis Study Group criteria., Results: Two-hundred and fifty-seven patients (213 with acute myeloid leukemia, 44 with acute lymphocytic leukemia) were included. The mean age of the patients was 54 years and the mean duration of their neutropenia was 21 days. Eighty-eight received antifungal prophylaxis, most with voriconazole (n=74). The characteristics of the patients who did or did not receive prophylaxis were similar except that pulmonary antecedents (chronic bronchopulmonary disorders or active tobacco use) were more frequent in the prophylaxis group. Invasive aspergillosis was diagnosed in 21 patients (12%) in the non-prophylaxis group and four (4.5%) in the prophylaxis group (P=0.04). Pulmonary antecedents, neutropenia at diagnosis and acute myeloid leukemia with high-risk cytogenetics were positively correlated with invasive aspergillosis, whereas primary prophylaxis was negatively correlated. Survival was similar in both groups. No case of zygomycosis was observed. The 3-month mortality rate was 28% in patients with invasive aspergillosis., Conclusions: This study suggests that antifungal prophylaxis with voriconazole could be useful in acute leukemia patients undergoing first remission-induction chemotherapy in settings in which there is a high-risk of invasive aspergillosis.

Background: Common variable immunodeficiency (CVID) is a primary immune deficiency defined by defective antibody production. In most series, a small proportion of patients present with opportunistic infections (OIs)., Methods: The French DEFI study has enrolled patients with primary hypogammaglobulinemia and allows a detailed clinical and immunologic description of patients with previous OIs and/or at risk for OIs., Results: Among 313 patients with CVID, 28 patients (8.9%) presented with late-onset combined immune deficiency (LOCID), defined by the occurrence of an OI and/or a CD4(+) T cell count <200 x 10(6) cells/L, and were compared with the remaining 285 patients with CVID. The patients with LOCID more frequently belonged to consanguineous families (29% vs 8%; P = .004). They differed from patients with CVID with a higher prevalence of splenomegaly (64% vs 31%), granuloma (43% vs 10%), gastrointestinal disease (75% vs 42%), and lymphoma (29% vs 4%). Even on immunoglobulin substitution, they required more frequent antibiotics administration and hospitalization. Lymphocyte counts were lower, with a marked decrease in CD4(+) T cell counts (158 x 10(6) vs 604 x 10(6) cells/L; P < .001) and a severe defect in naive CD45RA(+)CCR7(+)CD4(+) T cell counts (<20% of total CD4(+) T cells in 71% of patients with LOCID vs 37% of patients with CVID; P = .001). The CD19(+) B cell compartment was also significantly decreased (20 x 10(6) vs 102 x 10(6) cells/L; P < .001)., Conclusions: LOCID differs from classic CVID in its clinical and immunologic characteristics. Systematic T cell phenotype may help to discriminate such patients from those with CVID. Identification of this phenotype should result in a more fitted diagnostic and therapeutic approach of infections and could provide insights for genetic diagnosis.