Hospital Universitario Marques Of Valdecilla
Hospital Universitario Marques Of Valdecilla
Sanchez M.L.,Hospital Universitario Marques Of Valdecilla
Medicina Intensiva | Year: 2017
Mechanical ventilation (MV) is a crucial element in the management of acute respiratory distress syndrome (ARDS), because there is high level evidence that a low tidal volume of 6ml/kg (protective ventilation) improves survival. In these patients with refractory respiratory insufficiency, venovenous extracorporeal membrane oxygenation (ECMO) can be used. This salvage technique improves oxygenation, promotes CO2 clearance, and facilitates protective and ultraprotective MV, potentially minimizing ventilation-induced lung injury.Although numerous trials have investigated different ventilation strategies in patients with ARDS, consensus is lacking on the optimal MV settings during venovenous ECMO. Although the concept of "lung rest" was introduced years ago, there are no evidence-based guidelines on its use in application to MV in patients supported by ECMO. How MV in ECMO patients can promote lung recovery and weaning from ventilation is not clear.The purpose of this review is to describe the ventilation strategies used during venovenous ECMO in clinical practice. © 2017 Elsevier España, S.L.U. y SEMICYUC.
Gonzalez-Antolin O.,Hospital Universitario Marques Of Valdecilla
Enfermeria Clinica | Year: 2017
Radionecrosis is a late, and difficult to treat,complication of radiotherapy performed on head and neck tumours, and it is difficult to treat. This process causes significant damage, not only in the skin, but also in muscular, nervous, vascular, and bone structures. This, in turn, leads to airway and digestive tract involvement, as well as a functional loss and a cosmetic defect that usually requires reconstructive surgery. Therefore, this process is associated with a significant loss in the quality of life of patients and involves a long hospital stay for treatment, as well as the necessary support measures.This article describes the local treatment of pharyngocutaneous fistula secondary to radiation therapy of squamous cell carcinoma of the right oropharynx. The lesion appeared two months after completing this treatment and required surgical reconstruction with a myocutaneous flap to repair the tissue defect.In this context, an alginate wound dressing with silver was used, combined with a medium grip polyurethane foam with a silicone border. Within one month, there was autolytic debridement of all the necrotic tissue and the appearance of granulation tissue. At the same time, the infection was controlled, and a better management of the exudate was obtained, which provided a suitable surgical bed for the reconstruction. © 2017 Elsevier España, S.L.U.
Pelayo-Teran J.M.,Hospital Universitario Marques Of Valdecilla
Current pharmaceutical design | Year: 2012
Cannabis use may be considered as an additional risk factor in a diathesis-stress model of schizophrenia where the risk of developing the illness would be higher in genetic vulnerable people. In this regard, much of the research on cannabis and psychosis is currently focusing on gene-environment interactions. The present review will focus on the interaction between genes and cannabis exposure in the development of psychotic symptoms and schizophrenia and the biological mechanisms of cannabis. Cannabis use has been shown to act together with other environmental factors such as childhood trauma or urbanicity producing synergistic dopamine sensitization effects. Studies on gene-environment interaction have mainly included genetic variants involved in the regulation of the dopaminergic system. The most promising genetic variants in this field are COMT, CNR1, BDNF, AKT1 and NRG1. Additionally, the interaction with other environmental factors and possible gene-gene interactions are considered in the etiological model.
Francia M.V.,Hospital Universitario Marques Of Valdecilla |
Clewell D.B.,University of Michigan |
De La Cruz F.,University of Cantabria |
Moncalian G.,University of Cantabria
Proceedings of the National Academy of Sciences of the United States of America | Year: 2013
Plasmid pAD1 is a 60-kb conjugative element commonly found in clinical isolates of Enterococcus faecalis. The relaxase TraX and the primary origin of transfer oriT2 are located close to each other and have been shown to be essential for conjugation. The oriT2 site contains a large inverted repeat (where the nic site is located) adjacent to a series of short direct repeats. TraX does not show any of the typical relaxase sequence motifs but is the prototype of a unique family of relaxases (MOBC). The present study focuses on the genetic, biochemical, and structural analysis of TraX, whose 3D structure could be predicted by protein threading. The structure consists of two domains: (i) an N-terminal domain sharing the topology of the DNA binding domain of the MarR family of transcriptional regulators and (ii) a C-terminal catalytic domain related to the PD-(D/E)XK family of restriction endonucleases. Alignment of MOBC relaxase amino acid sequences pointed to several conserved polar amino acid residues (E28, D152, E170, E172, K176, R180, Y181, and Y203) that were mutated to alanine. Functional analysis of these mutants (in vivo DNA transfer and cleavage assays) revealed the importance of these residues for relaxase activity and suggests Y181 as a potential catalytic residue similarly to His-hydrophobe-His relaxases. We also show that TraX binds specifically to dsDNA containing the oriT2 direct repeat sequences, confirming their role in transfer specificity. The results provide insights into the catalytic mechanism of MOBC relaxases, which differs radically from that of His-hydrophobe-His relaxases.
Martino J.,Hospital Universitario Marques Of Valdecilla |
De Lucas E.M.,Universitario Marques Of Valdecilla
Clinical Anatomy | Year: 2014
Precise knowledge of the connectivities of the different white matter bundles is of great value for neuroscience research. Our knowledge of subcortical anatomy has improved exponentially during recent decades owing to the development of magnetic resonance diffusion tensor imaging tractography (DTI). Although DTI tractography has led to important progress in understanding white matter anatomy, the precise trajectory and cortical connections of the subcortical bundles remain poorly determined. The recent literature was extensively reviewed in order to analyze the trajectories and cortical terminations of the lateral association fibers of the brain.The anatomy of the following tracts is reviewed: superior longitudinal fasciculus, middle longitudinal fasciculus, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, uncinate fasciculus, frontal aslant tract, and vertical occipital fasciculus. The functional role of a tract can be inferred from its topography within the brain. Knowing the functional roles of the cortical areas connected by a certain bundle, it is possible to develop new insights into the putative functional properties of such connections. © 2014 Wiley Periodicals, Inc.
Gonzalez-Juanatey C.,Hospital Xeral Calde |
Llorca J.,University of Cantabria |
Gonzalez-Gay M.A.,Hospital Universitario Marques Of Valdecilla
Arthritis Research and Therapy | Year: 2011
Introduction: In this study, we aimed to determine the relationship between flow-mediated endothelium-dependent vasodilatation (FMD) and carotid artery intima-media wall thickness (IMT), two surrogate markers of atherosclerosis, in a series of Spanish patients with rheumatoid arthritis (RA) without clinically evident cardiovascular (CV) disease.Methods: One hundred eighteen patients who fulfilled the 1987 American College of Rheumatology classification criteria for RA, had no history of CV disease and had at least one year of follow-up after disease diagnosis were randomly selected. Brachial and carotid ultrasonography were performed to determine FMD and carotid IMT, respectively.Results: Carotid IMT values were higher and FMD percentages derived by performing ultrasonography were lower in individuals with a long duration from the time of disease diagnosis. Patients with a disease duration ≤ 7 years had significantly lower carotid IMT (mean ± SD) 0.69 ± 0.17 mm than those with long disease duration (0.81 ± 0.12 mm in patients with ≥ 20 years of follow-up). Also, patients with a long disease duration had severe endothelial dysfunction (FMD 4.0 ± 4.0% in patients with disease duration from 14.5 to 19.7 years) compared with those with shorter disease duration (FMD 7.4 ± 3.8% in patients with disease duration ≤ 7 years). Linear regression analysis revealed that carotid IMT was unrelated to FMD in the whole sample of 118 patients. However, carotid IMT was negatively associated with FMD when the time from disease diagnosis ranged from 7.5 to 19.7 years (P = 0.02).Conclusions: In patients with RA without CV disease, endothelial dysfunction and carotid IMT increased with the duration of RA. The association between FMD and carotid IMT values was observed only in patients with long disease duration. © 2011 González-Juanatey et al.; licensee BioMed Central Ltd.
Garcia-Penas J.J.,Hospital Universitario Marques Of Valdecilla
Revista de neurologia | Year: 2011
Learning disorders are very frequent among children with epilepsy. The etiology is multifactorial, being affected by the type of epileptic syndrome, the cause of epilepsy, a high frequency of epileptic seizures, a previous history of status epilepticus, the age of onset of epilepsy, the antiepileptic treatment being selected, and the role of interictal epileptiform discharges. Several studies have sought to analyze to what extent cognitive impairment can be attributed to interictal epileptiform discharges among the other epilepsy factors. To review the existing evidence on the cognitive impact of interictal epileptiform discharges in children. The disruptive effect of interictal epileptiform discharges on cognition is supported by a wide range of factors, such as the concept of transient cognitive impairment, the definition of epileptic encephalopathy, the natural course of epileptic syndromes with continuous spike and wave activity during slow sleep, the concept of autistic regression related to epileptiform activity, the cognitive profile of benign rolandic epilepsy, and the cognitive impact of non convulsive status epilepticus. According to this information it has been suggested that treatment of interictal epileptiform discharges with antiepileptic drugs could improve cognition and behaviour in these children. Interictal epileptiform discharges are associated with neuropsychological disorders like cognitive impairment and behavioral problems even in absence of clinical epilepsy. Uncontrolled reports and three preliminary randomised controlled trials of antiepileptic treatment of interictal epileptiform discharges have suggested that suppression of discharges is associated with significant improvement in psychosocial function. However, a greater number of controlled studies are required to be carried out, in order to confirm this hypothesis.
Ortiz J.S.,Hospital Universitario Marques Of Valdecilla
Clinical and Translational Oncology | Year: 2012
Aim The aim of this study is to analyze the use of CT in terminal stage cancer and the percentage of patients who received UCPD in 2009 and 2010 on the Medical Oncology and Palliative Home Care integrated service (UCPD) ward of the Marqués de Valdecilla University Hospital. Method Retrospective analysis of death rate registered on the Medical Oncology ward for 2009 and 2010 and the recorded date of the last CT given. The data are analyzed using the SPSS version 15.0 statistic package. Data were obtained from the Database Minimum Set for oncology admissions. Results The death rate on the Medical Oncology ward is 22-24 %. Total number of cases studied is 303. 47 % of patients are aged 60 or younger. 81.8 % (248) received active cancer treatment; of these, 138 (55.6 %) in the last month, and 84 (33.8 %) in the last 2 weeks. Only 66 patients out of those who died on the ward (21 %) were previously sent to the UCPD. Conclusions Even when it is known that the majority of cancer patients become resistant to CT at the end of their lives, it is often given to patients of all ages. The request for palliative care is rare and often late. © 2012 Federación de Sociedades Españolas de Oncología (FESEO).
Martino J.,Hospital Universitario Marques Of Valdecilla
Neurosurgery | Year: 2010
OBJECTIVE: To analyze the 3-dimensional relationships of the inferior fronto-occipital fasciculus (IFOF) within the temporal stem using anatomic dissection and to study the surgical application. METHODS: Ten postmortem human hemispheres (5 right, 5 left) were dissected using the Klingler fiber dissection technique. The 3-dimensional relationships of the IFOF with different landmarks of the temporal stem, insula, and temporal lobe were analyzed and measured. RESULTS: An average distance of 10.9 mm (range, 8-15 mm) was observed between the limen insulae and the anterior edge of the IFOF under the inferior limiting sulcus of the insula. This anterior one-third of the temporal stem is crossed by the uncinate fasciculus. The IFOF crosses the posterior two-thirds of the temporal stem, in the space between the posterior limit of the uncinate fasciculus and the lateral geniculate body. The average superoinferior distance between the IFOF and the inferior limiting sulcus was 3.8 mm. The auditory radiations and the claustro-opercular and insulo-opercular fibers of the external and extreme capsules pass through the temporal stem above the IFOF, whereas the optic radiations pass below. CONCLUSION: In the transsylvian approach to the mesiotemporal structures in the left dominant hemisphere, an incision within the posterior 8 mm from the limen insulae is less likely to damage the IFOF than more posterior incisions along the inferior limiting sulcus. In the temporal transopercular approach to left temporo-insular gliomas, the IFOF constitutes the deep functional limit of the resection within the temporal stem.
Martin-Millan M.,Hospital Universitario Marques Of Valdecilla |
Castaneda S.,Hospital Universitario Of La Princesa
Joint Bone Spine | Year: 2013
Estrogens participate in several biological processes through different molecular mechanisms. Their final actions consist of a combination of both direct and indirect effects on different organ and tissues. Estrogen may have pro- and anti-inflammatory properties depending on the situation and the involved tissue. In general, acute loss of estrogens increases the levels of reactive oxygen species and activates nuclear factor-κB and pro-inflammatory cytokine production, indicating their predominant anti-inflammatory properties. Furthermore, pro-inflammatory cytokine expression has been shown to be attenuated by estrogen replacement. Osteoarthritis and cardiovascular disease are two of the more prevalent diseases once menopause is established, which has suggested the link between estrogens and both processes. In addition, deletion of estrogen receptors in female mice results in cartilage damage, osteophytosis and changes in the subchondral bone of the joints suggesting that estrogens have a protective role on the maintenance of joint homeostasis. Furthermore, in spite of the negative effect of estrogen replacement reported in 2002 by the Women's Health Initiative study, several works published afterwards have explored the potential protective effect of estrogen supplementation in animal models and have postulated that these actions may justify a beneficial role of estrogens in different diseases where inflammation is the major feature. In this review, we will analyze the effects of estrogens on certain pathological situations such as osteoarthritis, some autoimmune diseases and coronary heart disease, especially in postmenopausal women. © 2013.