Estudio con Tomografía Computada Cone-beam de conductos en forma de C instrumentados con el sistema Wave One Gold

El objetivo del presente estudio, ex vivo, fue evaluar la eficacia de la instrumentación con el sistema Wave One Gold, en conductos en forma de C (C-shaped) de molares inferiores, a través de la reconstrucción tridimensional de imágenes escaneadas con Tomografía Computada Cone-beam (CBCT). Materiales y Métodos: Se seleccionaron 12 molares inferiores con raíces fusionadas, con conductos en forma de C. Se tomaron radiografías periapicales y posterior al tallado de los accesos coronarios, se observaron al microscopio quirúrgico. La muestra se clasificó según la morfología del piso de cámara pulpar en clase I, II y III. Los conductos fueron instrumentados con el sistema Wave One Gold (Dentsply Sirona), irrigados con hipoclorito de sodio y EDTA; y se activó la irrigación con Endoactivator (Dentsply Mailleffer) . Los dientes fueron escaneados antes y después de la instrumentación, con un sistema de Tomografía Computada Cone-beam (CBCT) con voxeles isotrópicos de 90 μm, en una adquisición con 80 KV y 5 mA. Posteriormente, las imágenes de CBCT se reconstruyeron tridimensionalmente utilizando un Software Mimics Innovation Suite versión 16, para evaluar el área de superficie instrumentada y no instrumentada, en los tercios coronario, medio y apical. Los datos fueron analizados estadísticamente mediante el análisis de la varianza (ANOVA) y el test de Tuckey. Resultados: La superficie del conducto no instrumentada varió entre las diferentes clases de C-Shaped (I, II y III). El área de superficie más instrumentada en la clase I se observó en el tercio medio con un valor de 11,57%; en la clase II correspondió al tercio coronario con un porcentaje de 8.49% y en la clase III el tercio medio reveló un 28.59% de superficie instrumentada. No hubo diferencias estadísticamente significativas en las áreas de superficie instrumentadas entre los tres tipos de C-Shaped. Conclusiones: La instrumentación de los conductos en forma de C de molares inferiores con el sistema Wave One Gold dejó un área de superficie no instrumentada, independientemente de la clase de C shaped. Dentro de las limitaciones del presente estudio, la reconstrucción tridimensional de los conductos permitió una evaluación longitudinal de los mismos.Fil: Arce Brissón, Georgette. Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra Endodoncia A; Argentina.Fil: Braschi, Silvia. Universidad Católica de Córdoba; Argentina.Fil: Boetto, Ana Cecilia. Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra Endodoncia A; Argentina.Fil: Martín, Gabriela. Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra Endodoncia A; Argentina.Otras Ciencias de la Salu

Position paper of the Italian association of medical specialists in dietetics and clinical nutrition (ANSISA) on nutritional management of patients with COVID-19 disease

COVID-19 disease is characterized by serious clinical manifestations which could require urgent hospitalization. Prolonged hospitalization, with catabolism and immobilization, induces a decrease in weight and muscle mass which can result in sarcopenia, a condition that impairs respiratory and cardiac function, worsening the prognosis. In this scenario there is an urgent need of nutritional indications aimed to prevent or contrast hospital malnutrition by improving the patient's response to therapy and to facilitate healthcare professionals in managing nutritional interventions on patients, reducing their already high workload due to the state of emergency

Hyperoxemia and excess oxygen use in early acute respiratory distress syndrome : Insights from the LUNG SAFE study

Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.Background: Concerns exist regarding the prevalence and impact of unnecessary oxygen use in patients with acute respiratory distress syndrome (ARDS). We examined this issue in patients with ARDS enrolled in the Large observational study to UNderstand the Global impact of Severe Acute respiratory FailurE (LUNG SAFE) study. Methods: In this secondary analysis of the LUNG SAFE study, we wished to determine the prevalence and the outcomes associated with hyperoxemia on day 1, sustained hyperoxemia, and excessive oxygen use in patients with early ARDS. Patients who fulfilled criteria of ARDS on day 1 and day 2 of acute hypoxemic respiratory failure were categorized based on the presence of hyperoxemia (PaO2 > 100 mmHg) on day 1, sustained (i.e., present on day 1 and day 2) hyperoxemia, or excessive oxygen use (FIO2 ≥ 0.60 during hyperoxemia). Results: Of 2005 patients that met the inclusion criteria, 131 (6.5%) were hypoxemic (PaO2 < 55 mmHg), 607 (30%) had hyperoxemia on day 1, and 250 (12%) had sustained hyperoxemia. Excess FIO2 use occurred in 400 (66%) out of 607 patients with hyperoxemia. Excess FIO2 use decreased from day 1 to day 2 of ARDS, with most hyperoxemic patients on day 2 receiving relatively low FIO2. Multivariate analyses found no independent relationship between day 1 hyperoxemia, sustained hyperoxemia, or excess FIO2 use and adverse clinical outcomes. Mortality was 42% in patients with excess FIO2 use, compared to 39% in a propensity-matched sample of normoxemic (PaO2 55-100 mmHg) patients (P = 0.47). Conclusions: Hyperoxemia and excess oxygen use are both prevalent in early ARDS but are most often non-sustained. No relationship was found between hyperoxemia or excessive oxygen use and patient outcome in this cohort. Trial registration: LUNG-SAFE is registered with ClinicalTrials.gov, NCT02010073publishersversionPeer reviewe

Fluorosis dental: relación con la concentración de flúor en saliva en escolares

Fil: Braschi, Silvia Marta. Universidad Católica de Córdoba. Facultad de Ciencias de la Salud; Argentin

Late antique and early medieval glass from the northern Venetian lagoon: New data from the archaeological site of Jesolo

Accurate microchemical characterisation was performed on a 4th-12th-century repertoire of coloured and colourless glass samples found in the archaeological excavation of Jesolo (ancient Equilus, northern Italy). The research aimed to improve the state-of-the-art knowledge of early medieval glass, through the characterisation of a stratigraphically very well-dated and homogeneous glass collection, further representing a unicum in the area of the western upper Adriatic. A representative sampleset of sixty-seven glass finds -including vessels, windows, tesserae and blocks of raw glass- was investigated by electron microprobe (EMPA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). All samples are classified as soda-lime-silica glass made of impure sands and natron. In most cases, glass colour is imparted by iron naturally present in the sands, often counteracted by varying levels of manganese. The collection also includes numerous Co– and Cu-coloured glass. Colourless glass is Mn-decoloured or, to a lesser extent, Mn/Sb-decoloured. The proportion between fresh and recycled glass is almost equal. The provenance investigation has established that while Levantine imports are numerically limited, most materials can be traced back to the Egyptian area. Among the twelve samples assigned to the Levantine area, both Jalame-type and Apollonia-type glass has been identified in an almost equal percentage. Among Egyptian glass, a consistent group of 22 samples has been straightforwardly assigned to the HIMTa and, to a lesser extent, HIMTb groups. Both group 2.1 and 3.2 are clearly attested in almost equal amounts but individually less frequent than HIMT

Il patrimonio di Cetacei attuali del Museo di Storia naturale dell’Università di Pisa (Certosa di Calci). Profilo storico e catalogo della collezione

Il presente lavoro elabora il catalogo dei Cetacei attuali conservati presso il Museo di Storia Naturale dell’Università di Pisa (Italia), con sede nella seicentesca Certosa di Calci (Pisa), ove le collezioni furono trasferite agli inizi degli anni ’80 dalla precedente collocazione storica presso l’Istituto di Zoologia e Anatomia Comparata dell’Università, con sede in Pisa città. Trattasi della più importante raccolta esistente in Italia per numero di specie presenti (27), delle quali sette uniche per i Musei italiani; in totale sono stati catalogati 53 esemplari (scheletri completi e parziali, crani e mandibole disgiunte) e 40 preparati anatomici. In particolare sono degni di nota gli scheletri di grossa mole, tra i quali i soli completi esistenti in Italia di Balenottera azzurra (Balaenoptera musculus) e di Balenottera boreale (Balaenoptera borealis), nonché di adulti di Megattera (Megaptera noveangliae) e Balena (Eubalaena glacialis). La raccolta è inoltre pregevole per le specie esotiche. I 53 scheletri conservati furono per la massima parte acquisiti nel sec. XIX per merito del prof. Sebastiano Richiardi, direttore dell’Istituto dal 1871 al 1904 e poi incrementati dal suo successore, il prof. Eugenio Ficalbi dal 1905 al 1922. Il presente catalogo è stato redatto grazie ad uno studio iniziato nel 1984 e portato a termine solo dopo svariati anni dal trasferimento della collezione del museo nella sede attuale: si rese infatti necessaria l’accurata revisione dello stato effettivo dei reperti dopo il trasloco e la sistemazione nella sede definitiva. Parallelamente è stata condotta una vasta ricerca documentaria sulle fonti storiche d’archivio, concernenti l’acquisizione dei materiali, con notizie originali sulla lunga storia della formazione della collezione. Vengono riportati inoltre dati sugli oneri economici degli interventi di acquisizione. Il catalogo elenca ciascun esemplare in ordine sistematico riportando i rispettivi riferimenti tassonomici ed i dati osteometrici essenziali. Viene indicata anche la bibliografia specifica riguardante ciascun esemplare nel contesto della collezione.The aim of this work is the redaction of a comprehensive catalogue of the living Cetaceans preserved in the Natural History Museum of the University of Pisa (Italy), now located in the seventeenth-century old Cartusian of Calci (Pisa) where the whole collection was moved during the Eigthies of the last century from the historical location at the Institute of Zoology and Comparative Anatomy of the University in the town of Pisa. This is the most important collection existing in Italy for the number of taxa being included (27), seven of them being the sole present in Italian museums. The total number of the specimens in the catalogue is 53 (including skeletons, skulls, mandibles) and the anatomical samples are 40. Noteworthy are the skeletons of some large size species, among which the Blue whale (Balaenoptera musculus) and the Sei whale (Balaenoptera borealis) are the sole complete ones existing in Italy in addition to the adults of the Humpback whale (Megaptera novaeangliae) and the Northern right whale (Eubalaena glacialis). The collection must also be appreciated for several exotic species. The 53 skeletons here stored were mostly acquired during the XIX Century, thanks to prof. Sebastiano Richiardi, director of the Institute from 1871 to 1904, and increased from his successor, prof. Eugenio Ficalbi from 1905 to1922. This catalogue has been compiled throughout a long term study begun in 1984 and concluded only several years later, after the transfer of the collection to its present seat: as a matter of fact, an accurate revision of the conditions of the specimens was essential after the move and the final layout. In the same time, a wide documental research was run on the archivial historical sources, concerning the acquisition of the specimens, with many original information on the long history of the collection; detailed data on the costs of several purchasing contracts are also reported. The catalogue lists each specimen in systematic order, with its taxonomic references and description of the fundamental osteometrical parameters. Specific bibliography concerning every specimen of the collection is also indicate