PLGA-LEC/F127 hybrid nanoparticles loaded with curcumin and their modulatory effect on monocytes.

Aim: To investigate the effect of surfactant type on curcumin-loaded (CUR) PLGA nanoparticles (NPs) to modulate monocyte functions. Materials & methods: The nanoprecipitation method was used, and PLGA NPs were designed using Pluronic F127 (F127) and/or lecithin (LEC) as surfactants. Results: The Z-average of the NPs was <200 nm, they had a spherical shape, Derjaguin-Muller-Toporov modulus >0.128 MPa, they were stable during storage at 4°C, ζ-potential ∼-40 mV, polydispersity index <0.26 and % EE of CUR >94%. PLGA-LEC/F127 NPs showed favorable physicochemical and nanomechanical properties. These NPs were bound and internalized mainly by monocytes, suppressed monocyte-induced reactive oxygen species production, and decreased the ability of monocytes to modulate T-cell proliferation. Conclusion: These results demonstrate the potential of these NPs for targeted therapy.

This study explores how different surfactants affect curcumin-loaded PLGA nanoparticles, a biodegradable polymer. The nanoparticles were designed using Pluronic F127 and/or lecithin as surfactants. They are less than 200 nm and spherical. They are stable when stored at 4 °C, with a surface charge of about -40 mV, and can encapsulate more than 94% of curcumin.The results of this study are promising, showing that PLGA nanoparticles using a mixture of lecithin and Pluronic F127 as surfactants have favorable properties toward monocyte adhesion. They are primarily taken up by monocytes, a type of white blood cell, and demonstrate a remarkable ability to reduce the production of reactive oxygen species, which can cause cell damage, as well as the ability of monocytes to stimulate the proliferation of T cells. This underscores the potential of these nanoparticles in targeted therapy, particularly in diseases where monocytes play a pivotal role, such as chronic inflammatory conditions.

Do no harm: the impact of implementing cancer prevention strategies on other preventive health measures.

BACKGROUND: Translational efforts to increase uptake of evidence-based practices typically look at those outcomes in isolation of their impact on other aspects of care delivery. If we are in fact to "do no harm", we must consider the possible negative impact of improving use of one practice on other quality measures. Alternatively, a focus on one practice could lead to spread of effective strategies to other practices, which would be highly beneficial. We studied the impact of a colorectal cancer (CRC) screening initiative on delivery of other preventive care measures. METHODS: We used an interrupted time series design with implementation year as the interruption point. The initiative was conducted between 2015 and 2020, with three staggered cohorts. Main outcomes were quality measures for colorectal cancer screening, cervical cancer screening, hypertension management, diabetes management, weight screening and follow-up, tobacco use screening and cessation treatment, and depression screening and follow-up. RESULTS: The initiative was associated with an increase in CRC screening (OR = 1.67, p ≤ 0.01; average marginal effect = 12.2% points), and did not reduce performance on other quality measures in the year of CRC program implementation or a change in their respective secular trends. CONCLUSIONS: The initiative led to a clinically meaningful increase in CRC screening and was not associated with reductions in delivery of six other preventive services. Quality improvement (QI) initiatives typically approach implementation with an eye towards reducing unintended impact and leveraging existing staff and resources. Implementation research studies may benefit from considering how QI initiatives factor in the local context in implementation efforts.

Motivational interviewing from the paediatricians' perspective: assessments after a 2-day training for physicians caring for adolescents with chronic medical conditions (CMCs).

BACKGROUND: Counselling adolescents with chronic medical conditions (CMCs) can be challenging regarding suitable interviewing skills and clinicians' attitudes toward the patient. Successful communication can be a key element of treatment. Motivational Interviewing (MI) is broadly applicable in managing behavioural problems and diseases by increasing patient motivation for lifestyle changes. However, data concerning the applicability, feasibility and implementation of MI sessions in everyday practice are missing from the physicians' point of view. METHOD: The present study was conducted as a mixed methods design. Twenty paediatricians were randomized to a 2-day MI course followed by MI consultations. Data were collected through a questionnaire one year after MI training. Factors for effective training and possible barriers to successful use of MI were examined. RESULTS: Completed questionnaires were returned by 19 of 20 paediatricians. The paediatricians' experiences with MI demonstrate that MI is regarded as a valuable tool when working with adolescents with CMCs. 95% of all respondents reported that they found MI education necessary for their clinical work and were using it also outside the COACH-MI study context. 73.7% percent saw potential to strengthen the connection to their patients by using MI. The doctors were already using more MI conversation techniques after a 2-day MI course. Obstacles were seen in the short training, the lack of time and missing undisturbed environment (interruptions by telephone, staff, etc.) during clinical flow. CONCLUSIONS: MI techniques are not yet a regular part of medical training. However, a 2-day MI course was rated effective and provided a lasting impact by physicians caring for children and adolescents with chronic medical conditions (CMCs), although booster sessions should be offered regularly. TRIAL REGISTRATION: The study was registered in the German Clinical Trials Register (DRKS00014043) on 26/04/2018.

Leveraging the fundamentals of heat transfer and fluid mechanics in microscale geometries for automated next-generation sequencing library preparation.

Next-generation sequencing (NGS) is emerging as a powerful tool for molecular diagnostics but remains limited by cumbersome and inefficient sample preparation. We present an innovative automated NGS library preparation system with a simplified mechanical design that exploits both macro- and microfluidic properties for optimizing heat transfer, reaction kinetics, mass transfer, fluid mechanics, adsorption-desorption rates, and molecular thermodynamics. Our approach introduces a unique two-cannula cylindrical capillary system connected to a programmable syringe pump and a Peltier heating element able to execute all steps with high efficiency. Automatic reagent movement, mixing, and magnetic bead-based washing with capillary-based thermal cycling (capillary-PCR) are completely integrated into a single platform. The manual 3-h library preparation process is reduced to less than 15 min of hands-on time via optimally pre-plated reagent plates, followed by less than 6 h of instrument run time during which no user interaction is required. We applied this method to two library preparation assays with different DNA fragmentation requirements (mechanical vs. enzymatic fragmentation), sufficiently limiting consumable use to one cartridge and one 384 well-plate per run. Our platform successfully prepared eight libraries in parallel, generating sequencing data for both human and Escherichia coli DNA libraries with negligible coverage bias compared to positive controls. All sequencing data from our libraries attained Phred (Q) scores > 30, mapping to reference genomes at 99% confidence. The method achieved final library concentrations and size distributions comparable with the conventional manual approach, demonstrating compatibility with downstream sequencing and subsequent data analysis. Our engineering design offers repeatability and consistency in the quality of sequence-able libraries, asserting the importance of mechanical design considerations that employ and optimize fundamental fluid mechanics and heat transfer properties. Furthermore in this work, we provide unique insights into the mechanisms of sample loss within NGS library preparation assays compared with automated adaptations and pinpoint areas in which the principles of thermodynamics, fluid mechanics, and heat transfer can improve future mechanical design iterations.

Transportation, childcare, lodging, and meals: Key for participant engagement and inclusion of historically underrepresented populations in the healthy brain and child development birth cohort.

Introduction: Participant recruitment and retention (R&R) are well-documented challenges in longitudinal studies, especially those involving populations historically underrepresented in research and vulnerable groups (e.g., pregnant people or young children and their families), as is the focus of the HEALthy Brain and Child Development (HBCD) birth cohort study. Subpar access to transportation, overnight lodging, childcare, or meals can compromise R&R; yet, guidance on how to overcome these "logistical barriers" is sparse. This study's goal was to learn about the HBCD sites' plans and develop best practice recommendations for the HBCD consortium for addressing these logistical barriers. Methods: The HBCD's workgroups developed a survey asking the HBCD sites about their plans for supporting research-related transportation, lodging, childcare, and meals, and about the presence of institutional policies to guide their approach. Descriptive statistics described the quantitative survey data. Qualitative survey responses were brief, not warranting formal qualitative analysis; their content was summarized. Results: Twenty-eight respondents, representing unique recruitment locations across the U.S., completed the survey. The results indicated substantial heterogeneity across the respondents in their approach toward supporting research-related transportation, lodging, childcare, and meals. Three respondents were aware of institutional policies guiding research-related transportation (10.7%) or childcare (10.7%). Conclusions: This study highlighted heterogeneity in approaches and scarcity of institutional policies regarding research-related transportation, lodging, childcare, and meals, underscoring the need for guidance in this area to ensure equitable support of participant R&R across different settings and populations, so that participants are representative of the larger community, and increase research result validity and generalizability.

The Impact of COVID-19 Pandemic on Mental Health of Adolescents With Chronic Medical Conditions: Findings From a German Pediatric Outpatient Clinic.

PURPOSE: The impact of the COVID-19 pandemic on the mental health of adolescents is of great concern, especially in the vulnerable group of adolescents with chronic medical conditions. The aim of this study was to examine this impact on the mental health of adolescents with chronic medical conditions treated in a German pediatric outpatient clinic. METHODS: Changes in the mental health status of adolescents with chronic medical conditions treated in a German pediatric outpatient clinic during the COVID-19 pandemic were explored via validated screening tools for anxiety and depression. RESULTS: The relative risk for adolescents with chronic medical conditions to develop clinically relevant symptoms of anxiety or depression was significantly higher (odds ratio 1,78 [confidence interval 1.06-3.04]) during the pandemic. DISCUSSION: This study identifies the COVID-19 pandemic as a potential additional risk for adolescents with chronic medical conditions to develop clinically relevant signs of anxiety or depression.

Leveraging an implementation science partnership network to understand how Federally Qualified Health Centers operationalize and address health equity.

Health equity-focused implementation research requires using definitions and approaches that are relevant and meaningful to implementation partners. We examined how health equity was operationalized and addressed at Federally Qualified Health Centers (FQHCs). We conducted semi-structured interviews with leadership (n = 19) and staff (n = 12) at 10 FQHCs in an implementation science partnership network for cancer control equity to understand how they operationalized and addressed health equity. We performed rapid qualitative analysis and shared findings with a larger group of 13 community health centers (including the 10 FQHCs) at an Implementation Learning Community (ILC) to identify action areas for research and practice, followed by a second phase of synthesizing qualitative codes into themes and mapping themes onto a framework for advancing health equity in healthcare organizations. Participants defined health equity as central to the mission of FQHCs, and identified barriers (e.g. financing models) and facilitators (e.g. interpreter services) to advancing health equity at FQHCs. These findings resonated with ILC participants who emphasized the challenge of addressing root cause social determinants of inequities using limited available resources in FQHCs and the importance of developing meaningful collaboration with communities for data collection, data interpretation, data use, and data ownership. Themes captured recommendations to advance health equity in daily work at FQHCs, including investments in staffing, training, and resources. Mapping qualitative themes from health equity-centered interviews with FQHC partners onto a framework for advancing health equity in healthcare organizations can provide clear, context-specific direction for actions aimed at improving health and healthcare equity.

Health equity-focused implementation research requires using definitions and approaches that are relevant and meaningful to implementation partners. Toward this goal, our research team asked leadership and staff at Federally Qualified Health Centers (FQHCs) to share how they defined and addressed health equity at their practice settings. FQHC participants defined health equity as the essential mission of FQHCs as safety net organizations delivering care to medically underserved populations. In addition, key informants identified barriers (e.g. financing models) and facilitators (e.g. interpreter services) to advancing health equity at FQHCs. We presented these findings to a larger group of FQHC stakeholders who recommended that future implementation research and practice consider how FQHCs are challenged to address the root causes of healthcare inequities with limited resources. They also highlighted the importance of meaningful collaboration among researchers, FQHCs, and communities for data collection, data interpretation, data use, and data ownership to advance health equity. Conducting research to understand the perspectives and experiences of FQHC partners can provide clear, context-specific direction for actions to improve health equity and can inform future approaches to health equity-focused implementation research that ismeaningful to FQHC partners and the communities they serve.

Using Participatory Implementation Science to Advance Health Equity.

Participatory approaches to implementation science (IS) offer an inclusive, collaborative, and iterative perspective on implementing and sustaining evidence-based interventions (EBIs) to advance health equity. This review provides guidance on the principles and practice of participatory IS, which enables academic researchers, community members, implementers, and other actors to collaboratively integrate practice-, community-, and research-based evidence into public health and health care services. With a foundational focus on supporting academics in coproducing knowledge and action, participatory IS seeks to improve health, reduce inequity, and create transformational change. The three main sections of this review provide (a) a rationale for participatory approaches to research in implementation science, (b) a framework for integrating participatory approaches in research utilizing IS theory and methods, and (c) critical considerations for optimizing the practice and impact of participatory IS. Ultimately, participatory approaches can move IS activities beyond efforts to make EBIs work within harmful systems toward transformative solutions that reshape these systems to center equity.

Machine Learning-Based Classification of Mango Pulp Weevil Activity Utilizing an Acoustic Sensor.

The mango pulp weevil (MPW) is an aggressive pest that mates seasonally according to the cycle of the mango fruit. After discovering the existence of the mango pulp weevil in Palawan, the island has been under quarantine for exporting mangoes. Detection of the pest proves difficult as the pest does not leave a physical sign that the mango has been damaged. Infested mangoes are wasted as they cannot be sold due to damage. This study serves as a base study for non-invasive mango pulp weevil detection using MATLAB machine learning and audio feature extraction tools. Acoustic sensors were evaluated for best-fit use in the study. The rationale for selecting the acoustic sensors includes local availability and accessibility. Among the three sensors tested, the MEMS sensor had the best result. The data for acoustic frequency are acquired using the selected sensor, which is placed inside a soundproof chamber to minimize the noise and isolate the sound produced by each activity. The identified activity of the adult mango pulp weevil includes walking, resting, and mating. The Mel-frequency cepstral coefficient (MFCC) was used for feature extraction of the recorded audio and training of the SVM classifier. The study achieved 89.81% overall accuracy in characterizing mango pulp weevil activity.

A Systematic Review Evaluating Disparities in State-Run Quitline Utilization and Effectiveness in the U.S.

Context: Cigarette smoking is a public health problem in the U.S. and is marked by pervasive sociodemographic disparities. State-run quitlines may offer greater access to cessation services that could in turn help to reduce smoking disparities. The aim of this review was to synthesize the body of literature regarding sociodemographic disparities in the utilization and effectiveness of state-run quitlines. Evidence acquisition: The PRISMA guidelines were followed in conducting this review. Included articles were published between January 1, 1992 and May 28, 2019 and sourced from PubMed and Web of Science. Studies that evaluated state-run quitline utilization or effectiveness (cessation) by sex, race/ethnicity, sexual or gender identity, or SES (income, education, insurance) were included. Evidence synthesis: Our search yielded 2,091 unique articles, 17 of which met the criteria for inclusion. This review found that quitline utilization was higher among Black and Asian/Pacific Islander individuals than among White individuals and among people with lower income and lower education than among people with higher income and higher education. Quitline use was associated with less smoking cessation among females than among males, among American Indian/Alaskan Native individuals than among individuals from all other races and ethnicities, and among individuals of lower than among those of higher income and education. Conclusions: This review found that although communities disproportionately affected by smoking utilize quitlines more commonly than their White and more affluent peers, disparities in cessation persist for American Indian/Alaskan Native and individuals from lower SES groups who use quitlines.

Priority skills for equity-focused, evidence-based cancer control in community-based organizations: A group concept mapping analysis with academics and practitioners.

Introduction: Community-based organizations (CBOs) are important equity-promoting delivery channels for evidence-based interventions (EBIs). However, CBO practitioners often cannot access needed support to build EBI skills. Additionally, the capacity-building literature is hindered by inconsistent definitions, limited use of validated measures, and an emphasis on the perspectives of EBI developers versus implementers. To address these gaps, we explored commonalities and differences between CBO practitioners and academics in conceptualizing and prioritizing core EBI skills. Methods: We utilized Group Concept Mapping, a mixed-methods approach connecting qualitative data (e.g., regarding the range of critical EBI skills) and quantitative data (e.g., sorting and ranking data regarding unique skills) to create conceptual maps integrating perspectives from diverse participants. A total of 34 practitioners and 30 academics working with cancer inequities participated in the study. Results: Participants nominated 581 core skills for EBI use, and our team (including practitioners and academics) identified 98 unique skills from this list. Participants sorted them into conceptual groups, yielding five clusters: (1) using data and evaluation, (2) selecting and adapting EBIs, (3) connecting with community members, (4) building diverse and equitable partnerships, and (5) managing EBI implementation. The ordering of importance and presence of skill clusters were similar across groups. Overall, importance was rated higher than presence, suggesting capacity gaps. Conclusions: There are helpful commonalities between practitioners' and academics' views of core EBI skills in CBOs and apparent capacity gaps. However, underlying patterns suggest that differences between the groups' perceptions warrant further exploration.

Experiencia inicial en nuestro centro con la embolización preventiva de la arteria mesentérica inferior en el tratamiento endovascular de los aneurismas de aorta abdominal / Early experience with preventive embolization of the inferior mesenteric artery in the endovascular treatment of abdominal aortic aneurysms

Introducción: la endofuga de tipo II (EFT2) es la más frecuente tras la reparación endovascular de aneurismas de aorta abdominal (EVAR). Objetivos: analizar la presencia de endofugas de tipo II durante el seguimiento, la regresión del saco aneurismático, la tasa de reintervención debido a EFT2, el análisis de los resultados en nuestra serie de casos tratados con embolización de la AMI antes del implante de la endoprótesis aórtica como método útil para disminuir las EFT2 durante el seguimiento. Material y métodos: análisis retrospectivo de los pacientes tratados en nuestro centro con embolización de la AMI previa al EVAR en el periodo 2019-2021. Los criterios utilizados para la embolización de la AMI fueron: diámetro > 3 mm y AL con diámetro > 2 mm o aneurismas aortoilíacos. Se incluyeron 7 pacientes varones (edad media: 72,1 años). El 42 % presentaba aneurismas aortoilíacos. En dos casos se llevó a cabo la embolización de la AMI en un primer tiempo y posteriormente el EVAR; en los restantes se realizó en el mismo procedimiento. El diámetro medio de la AMI fue 5,02 ± 0,9 mm. Todos los pacientes presentaban, al menos, dos AL enfrentadas al origen de la AMI con un diámetro > 2 mm. Resultados: el éxito técnico fue del 100 %. La mediana de seguimiento, 20,7 meses. En los angio TAC al mes y a los 12 meses se objetivó una correcta embolización de la AMI. No hubo fugas de tipo II durante el seguimiento. En todos los casos se visualizó una disminución en el diámetro del saco aneurismático (mediana de regresión: 5,08 mm). No hubo reintervenciones relacionadas con la patología aórtica. Conclusiones: la embolización de la AMI previa al EVAR en pacientes con un diámetro > 3 mm y al menos dos AL con diámetro > 2 mm o aneurismas aortoilíacos parece proteger frente al desarrollo de EFT2 a los 12 meses, a la espera de poder confirmar los resultados a medio y largo plazo. Alto éxito técnico y aceptable regresión del saco aneurismático.(AU)

Introduction: type II endoleak (T2EL), through the inferior mesenteric artery (IMA) or lumbar arteries (LA), is themost common endoleak after endovascular abdominal aortic aneurysm repair (EVAR). Objectives: the primary endpoint was the presence of type II endoleak at follow-up. Secondary endpoints includedaneurysm sac regression and reoperation rate due to T2EL, as well as the analysis of the results in our series of casestreated with IMA embolization prior to the endovascular procedure as a useful method to reduce T2EL at follow-up. Material and methods: this was a retrospective analysis of patients treated at our unit with IMA embolizationprior to EVAR from 2019 through 2021. The criteria used for IMA embolization were IMA diameter > 3 mm, presenceof LA with a diameter > 2 mm, or aortoiliac aneurysms. A total of 7 male patients were included with a mean age of72.1 years. A total of 42 % had aortoiliac aneurysms. In 2 of the cases, IMA embolization was performed initiallyfollowed by EVAR while in the remaining cases it was performed within the same procedure. The mean diameterof IMA was 5.02 mm ± 0.9 mm. All patients had at least 2 LAs facing the origin of the IMA with a diameter > 2 mm.Results: technical success was 100 %. The median follow-up was 20.7 months. In the CCTA performed 1 monthand 12 months postoperatively, correct IMA embolization was observed. There were no type II leaks at follow-up.In all cases, a decrease in the diameter of the aneurysmal sac was observed with a mean regression of 5.08 mm. There were no subsequent reinterventions associated with aortic valve disease. Conclusions: IMA embolization prior to EVAR in patients with a diameters > 3 mm and the presence of at least2 ALs with diameters > 2 mm and/or aortoiliac aneurysms seems to protect against the development of T2EL at12 months, waiting to be able to confirm the results in the mid- and long-term...(AU)

Similar skills, different frames: a thematic analysis exploring conceptualizations held by community-based organization practitioners and academics regarding skills to use evidence-based interventions to address cancer inequities.

BACKGROUND: Community-based organizations (CBOs) are critical partners in delivering evidence-based interventions (EBIs) to address cancer inequities. However, CBO practitioners do not typically have access to opportunities to build the necessary capacity (skills, knowledge, motivation, and resources) for using EBIs. Although capacity-building interventions can offer a solution, inconsistent definitions and measurements of capacity limit the ability to develop and evaluate such efforts. We explored how and why conceptualizations of core skills for EBI use differ between practitioners and academics addressing cancer and other health inequities. We anchored the inquiry with a commonly used set of target skills for EBI capacity-building efforts. METHODS: The study was conducted by an interdisciplinary team of academic researchers and CBO practitioners. We gathered data through semi-structured, hour-long interviews with practitioners and academics working to address cancer and other health inequities (n = 19). After hearing a brief vignette about a CBO addressing cervical cancer inequities, participants considered a widely accepted list of skills for EBI use that included assessing needs, engaging stakeholders, and selecting, adapting, implementing, evaluating, and sustaining the EBI. We used a team-based, reflexive thematic analysis approach grounded in critical and constructivist perspectives. RESULTS: Overall, the original list resonated with practitioners and academics and they added new skills to the list (cultural humility and systems change). Practitioners' responses described skills from the reference point of addressing broader community needs and context and achieving change over the long term, emphasizing aspects of health promotion in their descriptions. Academics offered a mix of perspectives, with some focused on addressing community needs (and related flexibility regarding EBIs) but more emphasized skills needed to deliver a specific EBI to achieve a focused set of health and equity outcomes. CONCLUSIONS: There is a significant opportunity to leverage complementary expertise and perspectives held by practitioners and academics addressing cancer inequities. However, the different frames utilized suggest proactive efforts will be required to find alignment across groups, particularly in valuing diverse contributions and identifying relevant outcomes of interest for each group. Such alignment is critical to designing effective capacity-building interventions and supporting the routine utilization of EBIs to address cancer inequities.

Nighttime sleep and daytime sleepiness patterns among left ventricular assist device patients.

Despite the high prevalence of sleep disturbance in the heart failure population, information about its consequence on daytime function in patients with left-ventricular assist devices (LVADs) is limited. This study examined the nighttime and daytime sleep patterns and changes from pre-implant to 6 months post-implant. This study included 32 LVAD patients. Demographics, nighttime and daytime sleep variables were collected pre-implant and at 1, 3, and 6 months post-implant. Wrist actigraphy and self-report questionnaires measured objective and subjective sleep, respectively. Objective nighttime sleep data were sleep efficiency (SE), sleep latency (SL), total sleep time (TST), wake after sleep onset (WASO), and sleep fragmentation (SF). Objective daytime sleep data were nap times. Self-reported Subjective Sleep Quality Scale (SSQS) and Stanford Sleepiness Scale (SSS) were subjective measures. Increased SF and WASO scores and decreased TST and SE scores were found pre-LVAD implant, indicative of poor sleep quality. TST, SE, naptime and SSQS scores were higher at 3 and 6 months post-implant compared to baseline. Decreases in TST and SF scores were observed at 3 and 6 months post-implant along with increases in SSS scores. Increasing SSS scores and decreasing overall scores from pre- and up to 6 months post-implant suggest improvement in daytime function. This study provides information on sleep-daytime function in the LVAD patient population. Improvements in daytime sleepiness do not imply "good" sleep quality, consistent with the extant knowledge in LVAD literature. Future investigations should elucidate the mechanism by which sleep-daytime function influences quality of life.

Figure of eight suture technique in aortic valve replacement decreases prosthesis-patient mismatch.

BACKGROUND: While the pledget suture technique has been the standard for surgical aortic. valve replacement (AVR), discussion continues regarding the possibility of the nonpledget suture technique to produce superior structural and hemodynamic parameters. This study aims to assess the effectiveness of the figure-of-eight suture technique in AVR, as determined by the incidence of prosthesis-patient mismatch (PPM). METHODS: We reviewed records of patients (N = 629) who underwent a surgical AVR procedure between January 2011 and July 2018 at a single institution. Indexed effective orifice area values and PPM incidence were calculated from implanted valve size and patient body surface area. Incidence of none, moderate, and severe PPM was compared across AVR suture techniques. RESULTS: A total of 570 pledget and 59 figure-of-eight patients were compared for incidence of PPM. Patients who received AVR with the pledget suture technique had significantly lower echocardiographic measurements of baseline ejection fraction than patients who had received AVR with the figure-of-eight suture technique (p = 0.003). Patients who received the figure-of eight suture had a 14% decrease in moderate PPM compared to patients who received the pledget suture (p = 0.022). Patients who received the figure-of-eight suture also had a significantly higher rate of no PPM (p = 0.044). CONCLUSIONS: The use of the figure-of-eight suture technique in AVR can reduce the incidence of moderate PPM. While the pledget suture is the standard technique in AVR, the figure-of-eight suture technique may offer better structural and hemodynamic outcomes, especially for patients with a smaller aortic annulus.

Resultados de cirugía de aneurisma abdominotorácico abierto mediante circulación extracorpórea parcial izquierda en un centro de bajo volumen / Results of open thoracoabdominal aneurysm repair with left partial cardiopulmonary bypass in a low-volume center

Introducción: la reparación abierta del aneurisma de aorta abdominotorácica (AATA) es técnicamente un reto, tanto desde el punto de vista quirúrgico como circulatorio, y en consecuencia conlleva un riesgo significativo de morbilidad y mortalidad operatorias. El objetivo de este estudio es analizar los resultados y las complicaciones de este tipo de intervenciones en nuestro centro. Métodos: se recogieron los antecedentes, los datos intraoperatorios y las complicaciones posoperatorias de pacientes tratados de aneurisma abdominotorácico abierto en un periodo de 15 años. Resultados: entre enero de 2005 y diciembre de 2019 se intervinieron un total de 27 pacientes por aneurisma abdominotorácico. 25 pacientes presentaban aneurisma y 2, disección crónica. 5 pacientes ya tenían realizada una cirugía aórtica previa: 2 fueron tratados de AAA mediante bypass aortoaórtico y aortobiilíaco, 2 pacientes por disección aórtica de tipo I mediante sustitución del arco aórtico y 1 por aneurisma de aorta torácica en el que se realizó TEVAR y bypass carótido-carotídeo y carótido-subclavio. La edad media fue de 66,5 ± 7,77 años y el 21 % fueron mujeres. En cuanto a la clasificación de Crawford de los aneurismas abdominotorácicos, 1 era del tipo I, 7 del tipo II, 9 del tipo III, 9 del tipo IV y 1 del tipo V. 23 intervenciones fueron de manera programada y 4, urgentes. Los AATA de tipo I, II, III y V se trataron mediante circulación extracorpórea parcial izquierda. La mortalidad total fue del 14,81 % y la programada, del 8,69 %. La incidencia de paraparesia posquirúrgica fue del 7,4 %. No hubo casos de paraplejia ni de ictus. La incidencia de infarto agudo de miocardio fue del 7,4 % y la de complicaciones respiratorias, del 48 %. La incidencia de insuficiencia renal aguda fue del 29,6 %. 5 de estos 8 pacientes requirieron hemodiálisis temporal.(AU)

Introduction: open TAA repair is technically challenging, both from a surgical and circulatory point of view, and consequently carries a significant risk of operative morbidity and mortality. The aim of this study is to analyze results and complications of this type of intervention in our center. Methods: demographic characteristics, intraoperative data and postoperative complications of patients who underwent open thoracoabdominal aneurysm repair were collected between January 2005 and December 2019 in our center. Results: a total of 27 patients underwent thoracoabdominal aneurysm surgery. 25 patients had aortic aneurysm and 2 chronic dissection. 5 patients had already undergone previous aortic intervention. The mean age was 66.5 ± 7,77 and 21% were women. Regarding Crawford's classification of thoracoabdominal aneurysms, there were 1 Type I, 7 Type II, 9 Type III, 9 Type IV, and 1 Type V. 23 patients were treated electively and 4 urgently. Types I, II, III, and V TAAA were treated with left partial cardiopulmonary bypass. Total mortality was 14.81 % and elective mortality was 8.69 %. The incidence of postsurgical paraparesis was 7.4 %. There were no cases of paraplegia or stroke. The incidence of acute myocardial infarction was 7.4 % and of pulmonary complications 48 %. The incidence of acute renal failure was 29.6 %. 5 of these eight patients required temporary hemodialysis. 1 patient presented postoperative visceral ischemia requiring left hemicolectomy. The median intensive care unit length of stay was 4 days and median hospital length of stay was 16 days. Conclusions: despite the complexity of open thoracoabdominal aneurysm surgery and the significant risk of complications, surgical repair with left partial cardiopulmonary bypass can be performed with acceptable results in a low-volume center.(AU)