Water in the terrestrial planet-forming zone of the PDS 70 disk.

Terrestrial and sub-Neptune planets are expected to form in the inner (less than 10 AU) regions of protoplanetary disks1. Water plays a key role in their formation2-4, although it is yet unclear whether water molecules are formed in situ or transported from the outer disk5,6. So far Spitzer Space Telescope observations have only provided water luminosity upper limits for dust-depleted inner disks7, similar to PDS 70, the first system with direct confirmation of protoplanet presence8,9. Here we report JWST observations of PDS 70, a benchmark target to search for water in a disk hosting a large (approximately 54 AU) planet-carved gap separating an inner and outer disk10,11. Our findings show water in the inner disk of PDS 70. This implies that potential terrestrial planets forming therein have access to a water reservoir. The column densities of water vapour suggest in-situ formation via a reaction sequence involving O, H2 and/or OH, and survival through water self-shielding5. This is also supported by the presence of CO2 emission, another molecule sensitive to ultraviolet photodissociation. Dust shielding, and replenishment of both gas and small dust from the outer disk, may also play a role in sustaining the water reservoir12. Our observations also reveal a strong variability of the mid-infrared spectral energy distribution, pointing to a change of inner disk geometry.

Abundant hydrocarbons in the disk around a very-low-mass star.

Very-low-mass stars (those less than 0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars. The compositions of those planets are largely unknown but are expected to relate to the protoplanetary disk in which they form. We used James Webb Space Telescope mid-infrared spectroscopy to investigate the chemical composition of the planet-forming disk around ISO-ChaI 147, a 0.11-solar-mass star. The inner disk has a carbon-rich chemistry; we identified emission from 13 carbon-bearing molecules, including ethane and benzene. The high column densities of hydrocarbons indicate that the observations probe deep into the disk. The high carbon-to-oxygen ratio indicates radial transport of material within the disk, which we predict would affect the bulk composition of any planets forming in the disk.

[How to manage risk in the surgical area. A Modal Analysis of Failures and Surgical Effects]. / Cómo gestionar el riesgo en el área quirúrgica. Análisis modal de fallos y efectos quirúrgicos.

OBJECTIVE: First to identify the areas of improvement in the surgical area before and during the performance of a surgical procedure in general surgery through the application of a Modal Analysis of Failures and Effects. Second to establish preventive measures to avoid adverse events in the surgical area. METHOD: A multidisciplinary working group was created in a university hospital for risk management in the General Surgery Operating Room Unit. The Modal Analysis of Faults and Effects was used. Potential risks for the patient in the ante-surgery and within the operating room were identified. The Risk Priority Index was calculated and preventive measures were established for all of them, with special interest when the Risk Priority Index was higher than 100. Preventive measures were developed based on the detected risks as well as those responsible for them. RESULTS: We identified a greater number of risks when the patient is in the operating room than in the ante-surgery room. Those with a higher risk priority index were: anticoagulated or antiaggregated patients, urinary tract infections, osteoarticular or neuropathic problems, patients not prepared for colon surgery, errors in laterality and leaving compresses in the operative field. CONCLUSIONS: A risk map has been developed in our organization, allowing the design of strategies to improve Patient Safety in the Surgical area. Training is a key aspect to improve Patient Safety.

[Creation and validation of a new in-house synthetic scale to measure patient safety culture]. / Creación y validación de una nueva escala para medir cultura de seguridad del paciente en el medio hispano hablante.

OBJECTIVE: Creation and validation of a new in-house synthetic scale to measure patient safety culture. MATERIAL AND METHOD: Cross-sectional and descriptive study in which the results of the assessment of the level of safety culture in health and non-health professionals of a university hospital are collected using a new in-house synthetic scale as a measurement tool. It is called 'Questionnaire on patient safety culture in a Spanish speaking environment'. The construction process was carried out in six phases: Bibliographic search; Validation of the structure and content of the questionnaire by a group of experts in patient safety using a nominal group technique; Assumptions verification and exploratory factor analysis; Pilot test to ensure its compression by a convenience sample of expert professionals; Modification of version 1.1 after the relevant analyses and analysis of the reliability of the questionnaire. RESULTS: The final version of the questionnaire had nine items, grouped into three factors a priori: Hospital Management support in patient safety, Perception of Safety, and Expectations and actions of the Managers/Supervisors that favour safety. The items were structured using a 5-point Likert scale. A general assessment item on patient safety at the Centre was also included, as well as five open questions to identify actions on patient safety undertaken by the Centre. Finally, the possibility of making observations in a section of free text was included. The comprehension analysis did not recommend, in any case, the revision of the wording or modification of the items. The Spearman and Pearson indices were similar, which allowed us to assume the linearity in the relationships proposed. The Kolmogorov-Smirnov test was satisfactory in all cases, which guaranteed the normal distribution of the variables. The sample was adequate to perform the factorial analysis. Both the Bartlett' sphericity test and the Kaiser-Meyer-Olkin (KMO) index showed sample quality to perform the analysis. The recommendation of the exploratory factor analysis that advised eliminating 1 item was followed. Specifically, item 9 was eliminated: 'It is only a matter of luck that in my Centre no more errors occur that affect patients'. The analysis of our scale has shown that all the factorial loads were greater than 0.5, which indicates good explanatory capacity of the item for the Dimension. In total, the scale manages to explain more than 60% of the perception by professionals in patient safety, considering an acceptable loss of information. CONCLUSIONS: A new and validated in-house scale has been created to measure patient safety culture in the Spanish speaking healthcare environment.

Current management of colonic volvulus. Results of a treatment protocol.

Colonic volvulus affects mainly the geriatric population and is associated with a high number of complications when treated by emergency surgery. The development of alternative methods has replaced and reduced the number of traditional surgical procedures. We present the results of treatment of colonic volvulus in a surgical service in Alicante, Spain. Between 1993 and 1997 a total of 17 cases in 15 patients were diagnosed, 16 in the sigmoid colon and 1 in the cecum. In 9 (60%) patients endoscopic devolvulation was successful. In 2 (22%) of these patients the problem recurred, and was resolved by a second endoscopic treatment. Three patients (20%) required surgery, and 3 others (20%) were treated with radiological reduction (barium enema) and rectal catheter. The average hospital stay of patients treated with endoscopy and barium enema was 2-3 days, being 7 days in patients who underwent surgery. Management with endoscopy is initially effective in most cases of volvulus of the sigmoid colon. This procedure affords decompression and adequate preparation of selected patients for surgical resection, which is the treatment of choice and provides the greatest guarantee against subsequent recurrence.

[Hepatocarcinoma: a rare form of presentation]. / Hepatocarcinoma: forma infrecuente de presentación.

A case of acute abdomen presenting with pain in the right upper abdomen, pyrexia and leukocytosis is presented. At laparotomy, hepatocarcinoma with necrosis and associated acute cholecystitis was found. This is apparently an unusual report of hepatocarcinoma presenting as acute cholecystitis.

[Management of colostomies with plug: clinical aspects and patient evaluation]. / Manejo de las colostomías mediante obturador: aspectos clínicos y evaluación de los pacientes.

AIM: To assess the effectiveness of the one-piece disposable plug device Conseal (Coloplast A/S, Espergaerd, Denmark) in colostomy patients, considering clinical and social aspects. PATIENTS AND METHODS: Twenty patients with definitive (perineal-abdominal amputation 17 cases) or transitory (Hartmann in 3 cases) colostomy were studied prospectively. No patient used self-irrigations. All of them completed the study. After obtaining the patient's consent, we analyzed for comfort, leaks, security, easy handling and skin conditions by means of personal interview and clinical examination. RESULTS: Sixteen patients (80%) had previously used conventional colostomy bags, 4 (20%) started to use the plug device during the postoperative period (average 8.7 days). Fifteen patients (75%) preferred to use the plug, whereas 5 (25%) considered the plug was insecure. CONCLUSIONS: Our study suggests that the one-piece disposable plug device improves the quality of life in patients with colostomy, although adequate selection of patients and previous training are mandatory.

Evaluación y manejo de los insulinomas. Presentación de 4 casos y revisión de la literatura / Evaluation and management of the insulinomas. Report of four cases and review of the literature

Introducción: Los insulinomas son tumores neuroendocrinos poco frecuentes que habitualmente tienen buen pronóstico. El objetivo es la presentación y revisión de la literatura médica a propósito de 4 casos. Material y Métodos: Estudio descriptivo, observacional y retrospectivo de los pacientes diagnosticados e intervenidos en el Hospital Universitario de San Juan de Alicante de insulinomas, en un periodo de 18 años (1995-2013). Resultados: Nuestro grupo de estudio incluyó 4 pacientes, 1 caso en hombres (25%) y 3 en mujeres (75%), con una mediana de edad de años (rango 3; 72). La distribución de las lesiones fue : cuerpo (1 caso), proceso uncinado (1 caso), cabeza (1 caso), cola (1 caso). El diagnóstico preoperatorio se realizó mediante test del ayuno y Tac abdominal. La ecografía intraoperatoria se realizó en todos los casos. El procedimiento quirúrgico de elección fue la enucleación. Actualmente se encuentran libres de enfermedad en un seguimiento a 10 años. Conclusiones: Los insulinomas son tumores infrecuentes que presentan buen pronóstico a largo plazo. Su diagnóstico topográfico en ocasiones es complejo. El tratamiento de elección es la cirugía y el procedimiento quirúrgico empleado con mayor frecuencia es la enucleación

Background: Insulinomas are infrecuent neuroendocrine tumors that usually have a good prognosis. The goal is the presentation and review of the literature about 4 cases. Methods: A retrospective study of all patients diagnosed with insulinomas surgically managed at San Juan de Alicante Hospital during the period between 1995 and 2013 was performed. Results: We analyzed 4 patients, three females (75%) and one male (25%) with a range age (39 to 72 years). Distribution of the lesions were: body (1 case), uncinate process (1 case), head (1 case), tail (1 case). Preoperative diagnosis was made by fasting test and abdominal CT. In all cases, intraoperative ultraound was made. Surgical management of choice was enucleation. Currently, they are free of disease at 10 years of follow up. Conclusions: Insulinomas are infrecuent tumors with good long-term prognosis. Its topographic diagnosis is sometimes complex. The treatment of choice is surgery and the surgical procedure most often used is enucleation