Intracardiac left atrial tuberculoma in an eleven-month-old infant: case report

<p>Abstract</p> <p>Background</p> <p>Cardiac tuberculosis is rare and usually manifests as tuberculous pericarditis. Involvement of other part of the heart is unusual and descriptions in the pediatric literature are confined to few case reports regarding mainly myocardial tuberculosis.</p> <p>Case presentation</p> <p>We describe a case of pulmonary miliary tuberculosis associated with intracardiac left atrial tuberculoma in an immunocompetent eleven-month-old infant successfully treated with surgery and antituberculous therapy.</p> <p>Conclusion</p> <p>Although unusual, involvement of endocardium in disseminated tuberculosis should be kept in mind.</p

Tuberculous dilated cardiomyopathy: an under-recognized entity?

BACKGROUND: Tuberculosis (TB) is a common public health problem in many parts of the world. TB is generally believed to spare these four organs-heart, skeletal muscle, thyroid and pancreas. We describe a rare case of myocardial TB diagnosed on a post-mortem cardiac biopsy. CASE PRESENTATION: Patient presented with history suggestive of congestive heart failure. We describe the clinical presentation, investigations and outcome of this case, and review the literature on the involvement of myocardium by TB. CONCLUSION: Involvement of myocardium by TB is rare. However it should be suspected as a cause of congestive heart failure in any patient with features suggestive of TB. Increasing recognition of the entity and the use of endomyocardial biopsy may help us detect more cases of this "curable" form of cardiomyopathy

On the role of nanoporosity in controlling the performance of moisture permeation barrier layers

Satisfactory results in term of moisture permeation barrier performance have been achieved for the encapsulation of organic electronic devices. However, further insight into the correlation between barrier performances and moisture permeation pathways are sought. This contribution focuses on the residual nanoporosity in the inorganic layer and its role in controlling the barrier performance. Inorganic barrier layers (i.e. Al2O3 and SiO2) prepared by plasma-enhanced atomic layer deposition (PE-ALD) and plasma-enhanced chemical vapor deposition (PE-CVD) have been extensively analyzed by means of IR spectroscopy, spectroscopic ellipsometry, Rutherford backscattering spectroscopy, elastic recoil detection and X-ray photoelectron spectroscopy. The calcium test has been performed to determine the intrinsic water vapor transmission rate (WVTR), as well as the effective WVTR values. Ellipsometric porosimetry (EP) has been adopted to determine the open porosity and pore size range in the structure of the layer. Trivinyltrimethyl cyclotrisiloxane (dV3D3dV3D3 = 1 nm) and water (dH2OdH2O = 0.3 nm) have been chosen as probe molecules. A correlation between the residual nanoporosity and the intrinsic barrier properties has been found, regardless of the chemistry of the layer and deposition method used. Pores larger than 1 nm with a relative content above 1% have been found responsible for mediocre barrier layers characterized by a WVTR in the range of 10-2 to 10-3 g m-2 day-1. Furthermore, the pore size range of 0.3–1 nm and its relative content have been found to control the transition in WVTR between the 10-4 g m-2 day-1 and the 10-6 g m-2 day-1 regime, highlighting the role of residual nanoporosity in controlling the intrinsic barrier properties

On the role of nanoporosity in controlling the performance of moisture permeation barrier layers

Satisfactory results in term of moisture permeation barrier performance have been achieved for the encapsulation of organic electronic devices. However, further insight into the correlation between barrier performances and moisture permeation pathways are sought. This contribution focuses on the residual nanoporosity in the inorganic layer and its role in controlling the barrier performance. Inorganic barrier layers (i.e. Al2O3 and SiO2) prepared by plasma-enhanced atomic layer deposition (PE-ALD) and plasma-enhanced chemical vapor deposition (PE-CVD) have been extensively analyzed by means of IR spectroscopy, spectroscopic ellipsometry, Rutherford backscattering spectroscopy, elastic recoil detection and X-ray photoelectron spectroscopy. The calcium test has been performed to determine the intrinsic water vapor transmission rate (WVTR), as well as the effective WVTR values. Ellipsometric porosimetry (EP) has been adopted to determine the open porosity and pore size range in the structure of the layer. Trivinyltrimethyl cyclotrisiloxane (dV3D3dV3D3 = 1 nm) and water (dH2OdH2O = 0.3 nm) have been chosen as probe molecules. A correlation between the residual nanoporosity and the intrinsic barrier properties has been found, regardless of the chemistry of the layer and deposition method used. Pores larger than 1 nm with a relative content above 1% have been found responsible for mediocre barrier layers characterized by a WVTR in the range of 10-2 to 10-3 g m-2 day-1. Furthermore, the pore size range of 0.3–1 nm and its relative content have been found to control the transition in WVTR between the 10-4 g m-2 day-1 and the 10-6 g m-2 day-1 regime, highlighting the role of residual nanoporosity in controlling the intrinsic barrier properties