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1.
Artículo en Inglés | MEDLINE | ID: mdl-38733285

RESUMEN

BACKGROUND: Immunosuppressed (IS) patients, particularly solid organ transplant recipients and those on immunosuppressive therapy, face a higher incidence and recurrence of nonmelanoma skin cancers (NMSC), including basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). Mohs micrographic surgery (MMS) is the preferred treatment for high-risk NMSC due to its high cure rate and margin examination capabilities. However, IS patients may experience more complications, such as surgical site infections, and a greater risk of recurrence, making their outcomes a subject of interest. OBJECTIVES: This study aimed to compare IS and immunocompetent (IC) patients undergoing MMS for NMSC in terms of baseline characteristics, intra- and post-surgical complications, and postoperative recurrence rates. METHODS: The study utilized data from the REGESMOHS registry, a 7-year prospective cohort study in Spain. It included 5226 patients, categorizing them into IC (5069) and IS (157) groups. IS patients included solid organ transplant recipients, those on immunosuppressive treatments, individuals with haematological tumours and HIV-positive patients. Patient data, tumour characteristics, surgical details and outcomes were collected and analysed. RESULTS: IS patients demonstrated a higher proportion of SCC, multiple synchronous tumours and tumours invading deeper structures. Complex closures, unfinished MMS and more surgical sections were observed in the IS group. Although intra-operative morbidity was higher among IS patients, this difference became non-significant when adjusted for other variables such as year of surgery, antiplatelet/anticoagulant treatment or type of closure. Importantly, IS patients had a substantially higher recurrence rate (IRR 2.79) compared to IC patients. CONCLUSIONS: This study suggests that IS patients may be at a higher risk of development of AE such as bleeding or tumour necrosis and are at a higher risk of tumour recurrence. Close follow-up and consideration of the specific characteristics of NMSC in IS patients are crucial. Further research with extended follow-up is needed to better understand the long-term outcomes for this patient group.

2.
Pediatr Pulmonol ; 2024 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-38695615

RESUMEN

INTRODUCTION: This work aimed to analyze whether breastfeeding is a predictive factor for admission to ICU or needing mechanical ventilation in children under 6 months with RSV+ respiratory infection. METHODS: A retrospective cohort study was performed in three hospitals. Binary and multiple logistic regression analyses were performed to evaluate the association of variables with admission to the ICU or receiving mechanical ventilation. RESULTS: We analyzed 414 admissions, of which 293 (70.8%) had received breastfeeding, 43 (8.1%) were admitted to the ICU, and 26 (5.4%) required mechanical ventilation. Bivariate analysis showed that breastfeeding for at least 15 days and a longer duration of breastfeeding were associated with a lower risk of admission to the ICU and requiring mechanical ventilation. Multivariate analysis showed that not having been breastfed for at least 1 month was predictive of ICU admission; not having been breastfed for at least 2 months was predictive of needing mechanical ventilation. CONCLUSIONS: Breastfeeding for as little as 15-28 days could be associated with a lower risk of ICU admission and requiring mechanical ventilation in infants younger than 6 months admitted for RSV+ bronchiolitis. Since breastfeeding is one of the few protective factors that can be promoted, this finding is relevant for current clinical practice and the development of health promotion programs. Future studies can compare their results to ours.

3.
An Pediatr (Engl Ed) ; 100(1): 25-33, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38158270

RESUMEN

OBJECTIVE: To assess the efficacy of virtual reality (VR) in reducing pain and anxiety associated with scheduled blood draws. MATERIAL AND METHODS: We conducted multicentre randomized clinical trial in both primary care and hospital settings. The study included children aged 7-12 years undergoing blood extraction procedures between March and October 2022. The intervention group used headsets, and the control group received usual care. Pain was assessed using the visual analogue scale and anxiety using the Groningen Distress Scale. The anxiety of the nursing staff and family satisfaction were assessed with numerical scales ranging from 1 to 10. RESULTS: The study included 83 patients: 40 in the control group and 43 in the VR group. The median age was 10 years (range, 7-12 years). In the VR group, 83.7% of the children reported mild pain, compared to 57.5% in the control group (P = .012). Also, 93% of children in the VR group showed calm or mild anxiety (score, 1-2), compared to 72% of the control group, a difference that was not statistically significant (P = .08). Family satisfaction was higher in the RV group (score ≥ 9/10: 93% of RV group vs 72.5% of control group; P = .026). The nursing staff anxiety score was less than 5 in more than 90% of cases, with no differences between groups (P = .13). CONCLUSION: The use of VR during venepuncture decreases the pain perceived by children and increases the satisfaction of their families.


Asunto(s)
Dolor , Realidad Virtual , Niño , Humanos , Dolor/etiología , Dolor/prevención & control , Manejo del Dolor/métodos , Ansiedad/etiología , Ansiedad/prevención & control , Dimensión del Dolor
5.
Am J Audiol ; : 1-11, 2023 Nov 08.
Artículo en Inglés | MEDLINE | ID: mdl-37939343

RESUMEN

PURPOSE: Standard clinical audiologic assessment is limited in its ability to capture variance in self-reported hearing difficulty. Additionally, the costs associated with clinical testing in audiology create financial barriers for hearing health care in developing countries like Mexico. This study used an open-source Spanish-language tool called PART (Portable Automated Rapid Testing) to test the hypothesis that a battery of assessments of auditory processing can complement standard clinical audiological assessment to better capture the variance of self-reported hearing difficulty. METHOD: Forty-three adults between 40 and 69 years of age were tested in Mexico City using a traditional clinical pure-tone audiogram, cognitive screening, and a battery of PART-based auditory processing assessments including a speech-on-speech competition spatial release from masking task. Results were compared to self-reported hearing difficulty, assessed with a Spanish-language adaptation of the Hearing Handicap Inventory for the Elderly-Screening Version (HHIE-S). RESULTS: Several measures from the PART battery exhibited stronger correlations with self-reported hearing difficulties than the pure-tone audiogram. The spatial release from masking task best captured variance in HHIE-S scores and remained significant after controlling for the effects of age, audibility, and cognitive score. CONCLUSIONS: The spatial release from masking task can complement traditional clinical measures to better account for patient's self-reported hearing difficulty. Open-source access to this test in PART supports its implementation for Spanish speakers in clinical settings around the world at low cost. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.24470140.

7.
Artículo en Inglés | MEDLINE | ID: mdl-36950898

RESUMEN

INTRODUCTION: There is still a need to develop a simple algorithm to identify patients likely to need complex Mohs micrographic surgery (MMS) and optimize MMS schedule. The main objectives of this study are to identify factors associated with a complex MMS and develop a predictor model of the number of stages needed in surgery and the need for a complex closure. MATERIALS AND METHODS: A nationwide prospective cohort study (REGESMOHS, the Spanish Mohs surgery registry) was conducted including all patients with a histological diagnosis of basal cell carcinoma (BCC). Factors related to three or more stages and a complex closure (that needing a flap and/or a graft) were explored and predictive models were constructed and validated to construct the REGESMOSH scale. RESULTS: A total of 5226 patients that underwent MMS were included in the REGESMOHS registry, with 4402 (84%) having a histological diagnosis of BCC. A total of 3689 (88.9%) surgeries only needed one or two stages and 460 (11.1%) required three or more stages. A model to predict the need for three or more stages included tumour dimension, immunosuppression, recurrence, location in risk areas, histological aggressiveness and previous surgery. Regarding the closure type, 1616 (38.8%) surgeries were closed using a non-complex closure technique and 2552 (61.2%) needed a complex closure. A model to predict the need for a complex closure included histological aggressiveness, evolution time, patient age, maximum tumour dimension and location. CONCLUSION: We present a model to predict MMS needing ≥3 stages and a complex closure based on epidemiological and clinical data validated in a large population (with real practice variability) including different centres that could be easily implemented in clinical practice. This model could be used to optimize surgery schedule and properly inform patients about the surgery duration.

8.
Heliyon ; 9(2): e12120, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36793975

RESUMEN

Research reports reveal the importance of applying various substances to enhance extra-heavy crude oil pipeline transportation. During the crude oil conduction process, shearing occurs in the equipment and pipe accessories, producing a water-in-crude emulsion associated with forming a rigid film by adsorbing natural surfactant molecules in the droplets water, leading to increased Viscosity. This study presents the effect of a flow enhancer (FE) on the behavior of the Viscosity of an extra heavy crude oil (EHCO) and in emulsions formed with 5% and 10% water (W). The results revealed the effectiveness of the 1%, 3%, and 5% flow enhancer in lowering the Viscosity and presenting a Newtonian flow behavior which will help reduce the cost of heat treatment during the transportation of crude oil through the pipeline.

9.
J Acoust Soc Am ; 153(1): 316, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36732214

RESUMEN

This study validates a new Spanish-language version of the Coordinate Response Measure (CRM) corpus using a well-established measure of spatial release from masking (SRM). Participants were 96 Spanish-speaking young adults without hearing complaints in Mexico City. To present the Spanish-language SRM test, we created new recordings of the CRM with Spanish-language Translations and updated the freely available app (PART; https://ucrbraingamecenter.github.io/PART_Utilities/) to present materials in Spanish. In addition to SRM, we collected baseline data on a battery of non-speech auditory assessments, including detection of frequency modulations, temporal gaps, and modulated broadband noise in the temporal, spectral, and spectrotemporal domains. Data demonstrate that the newly developed speech and non-speech tasks show similar reliability to an earlier report in English-speaking populations. This study demonstrates an approach by which auditory assessment for clinical and basic research can be extended to Spanish-speaking populations for whom testing platforms are not currently available.


Asunto(s)
Percepción del Habla , Habla , Adulto Joven , Humanos , México , Reproducibilidad de los Resultados , Lenguaje , Percepción del Habla/fisiología
10.
Molecules ; 27(20)2022 Oct 17.
Artículo en Inglés | MEDLINE | ID: mdl-36296576

RESUMEN

Grape pomace and seeds are important winemaking by-products. Their oils are rich in bioactive compounds such as fatty acids and tocopherols. We have characterized oils from both by-products from five Spanish grape varieties (Palomino Fino, Pedro Ximénez, Muscat of Alexandria, Tempranillo and Tintilla de Rota). A high content of UFAs was found in all the analyzed samples. Grape pomace oils generally had the same oleic acid (PUFAω-6) content as seed oils, and lower PUFA contents; they also had a markedly higher linolenic acid (PUFAω-3) content, improving the PUFAω-6/PUFAω-3 ratio. All the oil studied show good indicators of nutritional quality: low values of the atherogenicity (0.112-0.157 for pomace, 0.097-0.112 for seed) and thrombogenicity indices (0.30-0.35 for pomace, 0.28-0.31 for seed) and high values of the relationship between hypo- and hypercholesterolemic fatty acids (6.93-9.45 for pomace, 9.11-10.54 for seed). Three tocopherols were determined: α-, γ- and δ-tocopherol. Pomace oils have higher relative contents of α- and δ-tocopherol, whereas seed oils have higher relative contents of γ-tocopherol. A significantly higher content of total tocopherols has been found in pomace oil; it is higher in the oils from red varieties of pomace (628.2 and 706.6 mg/kg by-product), and in the oils from pomace containing stems (1686.4 mg/kg by-product). All the oils obtained can be considered as a source of vitamin E, and their consumption is beneficial for health.


Asunto(s)
Tocoferoles , Vitis , Ácidos Grasos , gamma-Tocoferol , España , Aceites de Plantas , Semillas , Vitamina E , Ácido alfa-Linolénico , Ácido Oléico
11.
Epidemiol Infect ; 150: e163, 2022 08 22.
Artículo en Inglés | MEDLINE | ID: mdl-35993492

RESUMEN

This study aimed to assess the impact of the introduction of pneumococcal conjugate vaccine 13 (PCV13) on the molecular epidemiology of invasive pneumococcal disease (IPD) in children from Andalusia. A population-based prospective surveillance study was conducted on IPD in children aged <14 years from Andalusia (2018-2020). Pneumococcal invasive isolates collected between 2006 and 2009 in the two largest tertiary hospitals in Andalusia were used as pre-PCV13 controls for comparison of serotype/genotype distribution. Overall IPD incidence rate was 3.55 cases per 100 000 in 2018; increased non-significantly to 4.20 cases per 100 000 in 2019 and declined in 2020 to 1.69 cases per 100 000 (incidence rate ratio 2020 vs. 2019: 0.40, 95% confidence interval (CI) 0.20-0.89, P = 0.01). Proportion of IPD cases due to PCV13 serotypes in 2018-2020 was 28% (P = 0.0001 for comparison with 2006-2009). Serotypes 24F (15%) and 11A (8.3%) were the most frequently identified non-PCV13 serotypes (NVT) in 2018-2020. Penicillin- and/or ampicillin-resistant clones mostly belonged to clonal complex 156 (serotype 14-ST156 and ST2944 and serotype 11A-ST6521). The proportion of IPD cases caused by PCV13 serotypes declined significantly after the initiation of the PCV13 vaccination programme in 2016. Certain NVT, such as serotypes 24F and 11A, warrant future monitoring in IPD owing to invasive potential and/or antibiotic resistance rates.


Asunto(s)
Infecciones Neumocócicas , Niño , Humanos , Epidemiología Molecular , Infecciones Neumocócicas/epidemiología , Vacunas Neumococicas , Estudios Prospectivos , España/epidemiología , Streptococcus pneumoniae , Vacunas Conjugadas
12.
Biosensors (Basel) ; 12(6)2022 Jun 20.
Artículo en Inglés | MEDLINE | ID: mdl-35735580

RESUMEN

As in the case of the food industry in general, there is a global concern about safety and quality in complex food matrices, such as honey, which is driving the demand for fast, sensitive and affordable analytical techniques across the honey-packaging industry. Although excellent techniques such as liquid chromatography-tandem mass spectrometry (LC-MS/MS) are available, these are located in centralized laboratories and are still lacking in speed, simplicity and cost-effectiveness. Here, a new approach is presented where a competitive immunoassay is combined with a novel High Fundamental Frequency Quartz Crystal Microbalance with Dissipation (HFF-QCMD) array biosensor for the simultaneous detection of antibiotics and pesticides in honey. Concretely, thiabendazole and sulfathiazole residues were monitored in spiked honey samples. Results revealed that HFF-QCMD arrays provide a complementary and reliable tool to LC-MS/MS for the analysis of contaminants in these kinds of complex matrices, while avoiding elaborate sample pre-treatment. The good sensitivity achieved (I50 values in the 70-720 µg/kg range) and the short analysis time (60 min for 24 individual assays), together with the ability for multiple analyte detection (24 sensor array) and its cost-effectiveness, pave the way for the implementation of a fast on-line, in situ routine control of potentially hazardous chemical residues in honey.


Asunto(s)
Plaguicidas , Antibacterianos , Cromatografía Liquida/métodos , Plaguicidas/análisis , Tecnicas de Microbalanza del Cristal de Cuarzo , Espectrometría de Masas en Tándem/métodos
13.
Foods ; 11(3)2022 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-35159455

RESUMEN

This work intends to determine the effect on the aroma profile, phenolic content and antioxidant activity of prickly pear vinegars produced by the surface culture at two different fermentation temperatures and using different acetic acid bacteria (AAB) inocula. Prickly pear wine was fermented at two temperature levels (30 and 37 °C) by using bacteria inocula containing Acetobacter, Gluconobacter or a mixture of bacteria isolated from Sherry vinegars. Eighty-five individual volatile compounds from different families and sixteen polyphenolic compounds have been identified. It was confirmed that the highest temperature tested (37 °C) resulted in a lower concentration of volatile compounds, while no significant effect on the vinegars' volatile composition could be associated with the AAB inoculum used. Contrariwise, the highest content of polyphenolic compounds was detected in those vinegars produced at 37 °C and their concentration was also affected by the type of AAB inoculum used. Prickly pear wine displayed greater antioxidant activity than juices or vinegars, while the vinegars obtained through the mixture of AAB from Sherry vinegar showed higher antiradical activity than those obtained through either of the two AAB genera used in this study. It can be therefore concluded that, although the volatile content of vinegars decreased when fermented at a higher temperature, vinegars with a higher content in polyphenols could be obtained by means of partial fermentations at 37 °C, as long as thermotolerant bacteria were employed.

14.
Dermatology ; 238(2): 320-328, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34380138

RESUMEN

BACKGROUND: Large prospective studies on the safety of Mohs micrographic (MMS) surgery are scarce, and most focus on a single type of surgical adverse event. Mid-term scar alterations and functional loss have not been described. OBJECTIVES: To describe the risk of MMS complications and the risk factors for them. METHODS: A nationwide prospective cohort collected all adverse events on consecutive patients in 22 specialised centres. We used multilevel mixed-effects logistic regression to find out factors associated with adverse events. RESULTS: 5,017 patients were included, with 14,421 patient-years of follow-up. 7.0% had some perioperative morbidity and 6.5% had mid-term and scar-related complications. The overall risk of complications was mainly associated with use of antiaggregant/anticoagulant and larger tumours, affecting deeper structures, not reaching a tumour-free border, and requiring complex repair. Age and outpatient setting were not linked to the incidence of adverse events. Risk factors for haemorrhage (0.9%) were therapy with antiaggregant/anticoagulants, tumour size, duration of surgery, and unfinished surgery. Wound necrosis (1.9%) and dehiscence (1.0%) were associated with larger defects and complex closures. Immunosuppression was only associated with an increased risk of necrosis. Surgeries reaching deeper structures, larger tumours and previous surgical treatments were associated with wound infection (0.9%). Aesthetic scar alterations (5.4%) were more common in younger patients, with larger tumours, in H-area, and in flap and complex closures. Risk factors for functional scar alterations (1.7%) were the need for general anaesthesia, larger tumours that had received previous surgery, and flaps or complex closures. CONCLUSIONS: MMS shows a low risk of complications. Most of the risk factors for complications were related to tumour size and depth, and the resulting need for complex surgery. Antiaggregant/anticoagulant intake was associated with a small increase in the risk of haemorrhage, that probably does not justify withdrawal. Age and outpatient setting were not linked to the risk of adverse events.


Asunto(s)
Cirugía de Mohs , Neoplasias Cutáneas , Estudios de Cohortes , Humanos , Cirugía de Mohs/efectos adversos , Estudios Prospectivos , Estudios Retrospectivos , Neoplasias Cutáneas/patología , Colgajos Quirúrgicos/patología , Colgajos Quirúrgicos/cirugía
15.
J Cutan Pathol ; 49(2): 116-122, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34322902

RESUMEN

BACKGROUND: Expression of microRNA-21 (miR-21) is increased in psoriasis, leading to reduced levels of epidermal tissue inhibitor of matrix metalloproteinase 3 (TIMP-3), a highly potent inhibitor of the tumor necrosis factor alpha (TNFα) sheddase TACE (TNFα-converting enzyme)/ADAM17. We described the profile of miR-21 and TIMP-3 in paradoxical psoriasiform reactions induced by anti-TNFα drugs and in a control group to elucidate the pathogenesis of this reactions. METHODS: We performed an analytic, cross-sectional, prospective, experimental case-control study. We compared our findings with those of non-induced psoriasis. RESULTS: We included 15 patients with a change of morphology (plaque to guttate psoriasis) and 10 patients with induced psoriasis (six palmoplantar pustulosis and four plaque psoriasis). Consecutive patients with different subtypes of non-induced, non-systemically treated psoriasis were included as a control group. We found that most cases with guttate psoriasis and with induced plaque psoriasis cases showed high expression of TIMP-3 expression and decreased or poorly increased levels of miR-21. The expression pattern was not homogeneous in the cases of induced palmoplantar pustulosis. These profiles differ from those of non-induced psoriasis. CONCLUSION: We conclude that various pro-inflammatory cytokine profiles are involved in the pathogenesis of paradoxical psoriasiform reactions and non-induced psoriasis.


Asunto(s)
MicroARNs/metabolismo , Psoriasis/metabolismo , Inhibidor Tisular de Metaloproteinasa-3/metabolismo , Inhibidores del Factor de Necrosis Tumoral/uso terapéutico , Adalimumab/uso terapéutico , Adulto , Biopsia , Estudios de Casos y Controles , Estudios Transversales , Femenino , Humanos , Infliximab/uso terapéutico , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Psoriasis/tratamiento farmacológico , Psoriasis/patología , Piel/metabolismo , Piel/patología , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores
16.
Pathogens ; 10(12)2021 Dec 10.
Artículo en Inglés | MEDLINE | ID: mdl-34959565

RESUMEN

OBJECTIVES: Vaginal and endocervical infections are considered a global health problem, especially after recent evidence of their association with preterm delivery and other adverse obstetric outcomes. Still, there is no consensus on the efficacy of a screening strategy for these infections in the first trimester of pregnancy. This study evaluated their prevalence and whether screening and treatment resulted as effective in reducing pregnancy and perinatal complications. METHODS: A single-center prospective observational study was designed; a sample size of 400 first-trimester pregnant women was established and they were recruited between March 2016-October 2019 at the Puerta de Hierro University Hospital (Spain). They were screened for vaginal and endocervical infections and treated in case of abnormal flora. Pregnancy and delivery outcomes were compared between abnormal and normal flora groups by univariate analysis. RESULTS: 109 patients had an abnormal flora result (27.2%). The most frequently detected infection was Ureaplasma urealyticum (12.3%), followed by Candida spp. (11.8%), bacterial vaginosis (5%), Mycoplasma hominis (1.2%) and Trichomonas vaginalis (0.8%). Patients with abnormal flora had a 5-fold increased risk of preterm premature rupture of membranes (5.3% vs. 1.1% of patients with normal flora, Odds Ratio 5.11, 95% Confidence Interval 1.20-21.71, p = 0.028). No significant differences were observed regarding preterm delivery or neonatal morbidity. CONCLUSIONS: Considering the morbimortality related to prematurity and that the results of our study suggest that the early treatment of abnormal flora could improve perinatal outcomes, the implementation of a screening program during the first trimester should be considered.

17.
Acta Derm Venereol ; 101(11): adv00602, 2021 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-34694418

RESUMEN

Randomized studies to assess the efficacy of Mohs micrographic surgery in basal cell and squamous cell carcinomas are limited by methodological and ethical issues and a lack of long follow-up periods. This study presents the "real-life" results of a nationwide 7-years cohort on basal cell carcinoma and squamous cell carcinoma treated with Mohs micrographic surgery. A prospective cohort was conducted in 22 Spanish centres (from July 2013 to February 2020) and a multivariate analysis, including characteristics of patients, tumours, surgeries and follow-up, was performed. A total of 4,402 patients followed up for 12,111 patient-years for basal cell carcinoma, and 371 patients with 915 patient-years of follow-up for squamous cell carcinoma were recruited. Risk factors for recurrence included age, non-primary tumours and more stages or unfinished surgeries for both tumours, and immunosuppression for squamous cell carcinoma. Incidence rates of recurrence were 1.3 per 100 person-years for basal cell carcinoma (95% confidence interval 1.1-1.5) and 4.5 for squamous cell carcinoma (95% confidence interval 3.3-6.1), being constant over time (0-5 years). In conclusion, follow-up strategies should be equally intense for at least the first 5 years, with special attention paid to squamous cell carcinoma (especially in immunosuppressed patients), elderly patients, non-primary tumours, and those procedures requiring more stages, or unfinished surgeries.


Asunto(s)
Carcinoma Basocelular , Carcinoma de Células Escamosas , Neoplasias Cutáneas , Anciano , Carcinoma Basocelular/epidemiología , Carcinoma Basocelular/cirugía , Carcinoma de Células Escamosas/epidemiología , Carcinoma de Células Escamosas/cirugía , Humanos , Cirugía de Mohs , Recurrencia Local de Neoplasia/epidemiología , Recurrencia Local de Neoplasia/cirugía , Estudios Prospectivos , Sistema de Registros , Factores de Riesgo , Neoplasias Cutáneas/epidemiología , Neoplasias Cutáneas/cirugía
18.
Sensors (Basel) ; 21(12)2021 Jun 17.
Artículo en Inglés | MEDLINE | ID: mdl-34204556

RESUMEN

Monolithic quartz crystal microbalance (MQCM) has recently emerged as a very promising technology suitable for biosensing applications. These devices consist of an array of miniaturized QCM sensors integrated within the same quartz substrate capable of detecting multiple target analytes simultaneously. Their relevant benefits include high throughput, low cost per sensor unit, low sample/reagent consumption and fast sensing response. Despite the great potential of MQCM, unwanted environmental factors (e.g., temperature, humidity, vibrations, or pressure) and perturbations intrinsic to the sensor setup (e.g., mechanical stress exerted by the measurement cell or electronic noise of the characterization system) can affect sensor stability, masking the signal of interest and degrading the limit of detection (LoD). Here, we present a method based on the discrete wavelet transform (DWT) to improve the stability of the resonance frequency and dissipation signals in real time. The method takes advantage of the similarity among the noise patterns of the resonators integrated in an MQCM device to mitigate disturbing factors that impact on sensor response. Performance of the method is validated by studying the adsorption of proteins (neutravidin and biotinylated albumin) under external controlled factors (temperature and pressure/flow rate) that simulate unwanted disturbances.


Asunto(s)
Técnicas Biosensibles , Tecnicas de Microbalanza del Cristal de Cuarzo , Adsorción , Cuarzo
20.
Rev Esp Salud Publica ; 952021 Jun 30.
Artículo en Español | MEDLINE | ID: mdl-34188014

RESUMEN

OBJECTIVE: Shoulder dystocia (SD) training is recommended by diverse international healthcare organizations; however, it is not so in Spain, and there is no specific programmes. The objective of the study was to evaluate the level of knowledge and attitudes towards resolving a SD among a large sample of spanish obstetricians and midwives. METHODS: A multi-professional team carried out simulation-based training courses. Descriptive observational study where mean, standard deviation, minimum and maximum or median and interquartile intervals according to the distribution will be used for continuous variables. For the discrete variables, the number and the corresponding percentages will be reported. RESULTS: Between December 2015 and 2019, the team carried out 17 editions of SD workshop and 904 active professionals were trained in labour wards in different parts of Spain. The results showed that 64.8% of the professionals had learned to solve shoulder dystocia through books and/or 58.4% theoretical classes. 60.4% (380) of the respondents had not received any type of training in simulation in obstetrics. 87.1% (415/476) of the students had not felt prepared to face a SD when they finished the residency At the time of answering this survey, 61.8% (358) did not feel prepared to solve a SD. CONCLUSIONS: Training in Shoulder Dystocia in Spain is mainly theoretical and a high number of professionals recognize that they are not sufficiently prepared to face it with guarantees.


OBJETIVO: El entrenamiento en distocia de hombros (DH) está recomendado por numerosas sociedades médicas internacionales y, sin embargo, en España, no existen programas específicos de entrenamiento. El objetivo de este estudio fue evaluar el nivel de conocimiento y habilidades prácticas para resolver una distocia de hombros de un amplio número de matronas y ginecólogos españoles que habían realizado un curso basado en simulación. METODOS: El equipo multiprofesional de simulación obstétrica realizo talleres basados en simulación para la resolución de la DH. Estudio descriptivo observacional donde para las variables continuas se utilizará media, desviación estándar, mínimo y máximo o mediana e intervalos intercuartiles de acuerdo con la distribución. Para las variables discretas se reportarán el número y los porcentajes correspondientes. RESULTADOS: Entre diciembre de 2015 y 2019, el equipo llevo a cabo 17 ediciones del taller de DH y formo a 904 profesionales de diferentes partes de España. Los resultados mostraron que Un 64,8% de los profesionales había aprendido a solucionar la distocia de hombros a través de libros y/o un 58,4% clases teóricas. El 60,4% (380) de los encuestados, no había recibido ningún tipo de formación en simulación en obstetricia. Un 87,1% (415/476) de los alumnos no se había sentido preparado para enfrentarse a una DH cuando terminó la residencia En el momento de contestar esta encuesta, un 61,8% (358) no se sentía preparado para resolver una DH. CONCLUSIONES: La formación en distocia de hombros en España es principalmente teórica y un alto numero de profesionales reconoce que no están suficientemente preparados para afrontarla con garantías.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Partería , Obstetricia , Distocia de Hombros/terapia , Femenino , Humanos , Embarazo , España
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