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1.
Artif Organs ; 2024 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-39096053

RESUMO

BACKGROUND: Pre-left ventricular assist device (LVAD) pectoralis muscle assessment, an estimate of sarcopenia, has been associated with postoperative mortality and gastrointestinal bleeding, though its association with inflammation, endotoxemia, length-of-stay (LOS), and readmissions remains underexplored. METHODS: This was a single-center cohort study of LVAD patients implanted 1/2015-10/2018. Preoperative pectoralis muscle area was measured on chest computed tomography (CT), adjusted for height squared to derive pectoralis muscle area index (PMI). Those with PMI in the lowest quintile were defined as low-PMI cohort; all others constituted the reference cohort. Biomarkers of inflammation (interleukin-6, adiponectin, tumor necrosis factor-α [TNFα]) and endotoxemia (soluble (s)CD14) were measured in a subset of patients. RESULTS: Of the 254 LVAD patients, 95 had a preoperative chest CT (median days pre-LVAD: 7 [IQR 3-13]), of whom 19 (20.0%) were in the low-PMI cohort and the remainder were in the reference cohort. Compared with the reference cohort, the low-PMI cohort had higher levels of sCD14 (2594 vs. 1850 ng/mL; p = 0.04) and TNFα (2.9 vs. 1.9 pg/mL; p = 0.03). In adjusted analyses, the low-PMI cohort had longer LOS (incidence rate ratio 1.56 [95% confidence interval 1.16-2.10], p = 0.004) and higher risk of 90-day and 1-year readmissions (subhazard ratio 5.48 [1.88-16.0], p = 0.002; hazard ratio 1.73 [1.02-2.94]; p = 0.04, respectively). CONCLUSIONS: Pre-LVAD PMI is associated with inflammation, endotoxemia, and increased LOS and readmissions.

2.
J Adv Nurs ; 2024 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-38922972

RESUMO

AIM: To explore the experiences and support needs of parents in the first 6 months after paediatric critical care. DESIGN: Longitudinal qualitative design. METHODS: Sequential semi-structured qualitative interviews were conducted with a sample of 28 parents in succession at 1 month and at 6 months (n = 22) after their child's discharge from paediatric critical care using purposive sampling. Data were analysed using the adapted five-stage framework analysis. RESULTS: Data were developed into eight synthesized themes, three domains and an overarching theme: Regaining Normalcy. Families of children requiring medical treatment at 6 months showed signs of adaption to daily care routines. The two domains were Parental Emotional Health and Parental Social Health. Parental Transitional Health, a third domain, was added to the Post Intensive Care Syndrome-paediatric framework. Parents were forward-looking and discussed emotional health, relating to current caregiving issues. Emotional attention was related to present challenges and concerns about current health and possible readmission to the hospital. In terms of Parental Social Health, families isolated themselves for infection control while remaining connected with families using chat applications. Parents were selective to whom they allowed access to their lives. The impact of parental transitional health was evident and emphasized the daily challenges associated with integration back to home life. Flexible work arrangements allowed working parents to support caregiving needs in the first 6 months after discharge. CONCLUSION: In the first 6 months after paediatric critical illness, most families reported having moved past the experiences while having provoking memories of the admission period. Parents viewed the point of normalcy as child returned to school or when all medications were discontinued. Extension of transitional support can facilitate discharge experiences between paediatric critical care and normalcy. The findings highlight the importance of understanding the medium- and longer-term impact of paediatric critical care. IMPACT: What problem did the study address? ○ Limited understanding of long-term parental experiences and support needs after PICU discharge. What were the main findings? ○ Most families regained normalcy when child returns to school or when medications were discontinued. Some families continued to show signs of adaptations at 6 months after PICU discharge. Where and on whom did the research have an impact? ○ The research has an impact on improving the understanding of long-term parental experiences and support needs after PICU discharge, informing clinical practice, guiding policy development and shaping parental support programs. REPORTING METHOD: We reported this study using the COREQ guidelines. PATIENT OR PUBLIC CONTRIBUTION: Prior to confirming the interview guide, three parents of critically ill children actively participated by reviewing and providing feedback on its content. They provided suggestions to refine the wording and ensure clarity to enhance the participants' understanding. By including the perspectives of these parents, we aimed to improve the overall quality and relevance of the interview guide.

3.
Am J Kidney Dis ; 82(5): 521-533, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37086965

RESUMO

RATIONALE & OBJECTIVE: The clinical implications of the discrepancy between cystatin C (cysC)- and serum creatinine (Scr)-estimated glomerular filtration rate (eGFR) in patients with heart failure (HF) and reduced ejection fraction (HFrEF) are unknown. STUDY DESIGN: Post-hoc analysis of randomized trial data. SETTING & PARTICIPANTS: 1,970 patients with HFrEF enrolled in PARADIGM-HF with available baseline cysC and Scr measurements. EXPOSURE: Intraindividual differences between eGFR based on cysC (eGFRcysC) and Scr (eGFRScr; eGFRdiffcysC-Scr). OUTCOMES: Clinical outcomes included the PARADIGM-HF primary end point (composite of cardiovascular [CV] mortality or HF hospitalization), CV mortality, all-cause mortality, and worsening kidney function. We also examined poor health-related quality of life (HRQoL), frailty, and worsening HF (WHF), defined as HF hospitalization, emergency department visit, or outpatient intensification of therapy between baseline and 8-month follow-up. ANALYTICAL APPROACH: Fine-Gray subdistribution hazard models and Cox proportional hazards models were used to regress clinical outcomes on baseline eGFRdiffcysC-Scr. Logistic regression was used to investigate the association of baseline eGFRdiffcysC-Scr with poor HRQoL and frailty. Linear regression models were used to assess the association of WHF with eGFRcysC, eGFRScr, and eGFRdiffcysC-Scr at 8-month follow-up. RESULTS: Baseline eGFRdiffcysC-Scr was higher than +10 and lower than-10mL/min/1.73m2 in 13.0% and 35.7% of patients, respectively. More negative values of eGFRdiffcysC-Scr were associated with worse outcomes ([sub]hazard ratio per standard deviation: PARADIGM-HF primary end point, 1.18; P=0.008; CV mortality, 1.34; P=0.001; all-cause mortality, 1.39; P<0.001; worsening kidney function, 1.31; P=0.05). For a 1-standard-deviation decrease in eGFRdiffcysC-Scr, the prevalences of poor HRQoL and frailty increased by 29% and 17%, respectively (P≤0.008). WHF was associated with a more pronounced decrease in eGFRcysC than in eGFRScr, resulting in a change in 8-month eGFRdiffcysC-Scr of-4.67mL/min/1.73m2 (P<0.001). LIMITATIONS: Lack of gold-standard assessment of kidney function. CONCLUSIONS: In patients with HFrEF, discrepancies between eGFRcysC and eGFRScr are common and are associated with clinical outcomes, HRQoL, and frailty. The decline in kidney function associated with WHF is more marked when assessed with eGFRcysC than with eGFRScr. PLAIN-LANGUAGE SUMMARY: Kidney function assessment traditionally relies on serum creatinine (Scr) to establish an estimated glomerular filtration rate (eGFR). However, this has been challenged with the introduction of an alternative marker, cystatin C (cysC). Muscle mass and nutritional status have differential effects on eGFR based on cysC (eGFRcysC) and Scr (eGFRScr). Among ambulatory patients with heart failure enrolled in PARADIGM-HF, we investigated the clinical significance of the difference between eGFRcysC and eGFRScr. More negative values (ie, eGFRScr>eGFRcysC) were associated with worse clinical outcomes (including mortality), poor quality of life, and frailty. In patients with progressive heart failure, which is characterized by muscle loss and poor nutritional status, the decline in kidney function was more pronounced when eGFR was estimated using cysC rather than Scr.

4.
Clin Transplant ; 37(5): e14974, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36938656

RESUMO

BACKGROUND: Heart transplantation (HT) is the gold standard therapy for advanced heart failure, providing excellent long-term outcomes. However, postoperative outcomes are limited by bleeding, infections, and primary graft dysfunction (PGD) that contribute to early mortality after HT. HT candidates with pre-existing hematologic disorders, bleeding, and clotting, may represent a higher risk population. We assessed the short- and long-term outcomes of patients with pre-existing hematologic disorders undergoing HT. METHODS AND RESULTS: Medical records of all adult patients who received HT from January 2010 to December 2019 at our institution were retrospectively reviewed. Hematologic disorders were identified via chart review and adjudicated by a board-certified hematologist. Inverse probability weighting and multivariable models were used to adjust for potential pretransplant confounders. Four hundred and ninety HT recipients were included, of whom 29 (5.9%) had a hematologic disorder. Hematologic disorders were associated with severe PGD requiring mechanical circulatory support (aOR 3.15 [1.01-9.86]; p = .049), postoperative infections (aOR 2.93 [1.38-6.23]; p = .01), and 3-year acute cellular rejection (ACR) (≥1R/1B) (aSHR 2.06 [1.09-3.87]; p = .03). There was no difference in in-hospital mortality (aOR 1.23 [.20-7.58], p = .82) or 3-year mortality (aHR 1.58 [.49-5.12], p = .44). CONCLUSIONS: Patients with hematologic disorders undergoing HT are at increased risk of severe PGD, postoperative infections, and ACR, while in-hospital and 3-year mortality remain unaffected.


Assuntos
Insuficiência Cardíaca , Transplante de Coração , Disfunção Primária do Enxerto , Adulto , Humanos , Estudos Retrospectivos , Disfunção Primária do Enxerto/etiologia , Transplante de Coração/efeitos adversos , Insuficiência Cardíaca/cirurgia , Morbidade , Fatores de Risco , Complicações Pós-Operatórias/etiologia
5.
J Cardiovasc Pharmacol ; 82(2): 69-85, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37256547

RESUMO

ABSTRACT: Angina pectoris remains a significant burden despite advances in medical therapy and coronary revascularization. Many patients (up to 30%) with angina have normal coronary arteries, with coronary microvascular disease and/or coronary artery vasospasm being major drivers of the myocardial demand-supply mismatch. Even among patients revascularized for symptomatic epicardial coronary stenosis, recurrent angina remains highly prevalent. Medical therapy for angina currently centers around 2 disparate goals, viz secondary prevention of hard clinical outcomes and symptom control. Vasodilators, such as nitrates, have been first-line antianginal agents for decades, along with beta-blockers and calcium channel blockers. However, efficacy in symptoms control is heterogenous, depending on underlying mechanism(s) of angina in an individual patient, often necessitating multiple agents. Nicorandil (NCO) is an antianginal agent first discovered in the late 1970s with a uniquely dual mechanism of action. Like a typical nitrate, it mediates medium-large vessel vasodilation through nitric oxide. In addition, NCO has adenosine triphosphate (ATP)-dependent potassium channel agonist activity (K ATP ), mediating microvascular dilatation. Hence, it has proven effective in both coronary artery vasospasm and coronary microvascular disease, typically challenging patient populations. Moreover, emerging evidence suggests that cardiomyocyte protection against ischemia through ischemic preconditioning may be mediated through K ATP agonism. Finally, there is now fairly firm evidence in favor of NCO in terms of hard event reduction among patients with stable coronary artery disease, following myocardial infarction, and perhaps even among patients with congestive heart failure. This review aims to summarize the mechanism of action of NCO, its efficacy as an antianginal, and current evidence behind its impact on hard outcomes. Finally, we review other cardiac and emerging noncardiac indications for NCO use.


Assuntos
Fármacos Cardiovasculares , Vasoespasmo Coronário , Humanos , Nicorandil/efeitos adversos , Vasoespasmo Coronário/tratamento farmacológico , Fármacos Cardiovasculares/uso terapêutico , Vasodilatadores/efeitos adversos , Bloqueadores dos Canais de Cálcio/uso terapêutico , Angina Pectoris/prevenção & controle , Nitratos/uso terapêutico
6.
J Proteome Res ; 21(6): 1428-1437, 2022 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-35536659

RESUMO

Liquid chromatography coupled to mass spectrometry is a key metabolomics/metabonomics technology. Reversed-phase liquid chromatography (RPLC) is very widely used as a separation step, but typically has poor retention of highly polar metabolites. Here, we evaluated the combination of two alternative methods for improving retention of polar metabolites based on 6-aminoquinoloyl-N-hydroxysuccinidimyl carbamate derivatization for amine groups, and ion-pairing chromatography (IPC) using tributylamine as an ion-pairing agent to retain acids. We compared both of these methods to RPLC and also to each other, for targeted analysis using a triple-quadrupole mass spectrometer, applied to a library of ca. 500 polar metabolites. IPC and derivatization were complementary in terms of their coverage: combined, they improved the proportion of metabolites with good retention to 91%, compared to just 39% for RPLC alone. The combined method was assessed by analyzing a set of liver extracts from aged male and female mice that had been treated with the polyphenol compound ampelopsin. Not only were a number of significantly changed metabolites detected, but also it could be shown that there was a clear interaction between ampelopsin treatment and sex, in that the direction of metabolite change was opposite for males and females.


Assuntos
Aminas , Espectrometria de Massas em Tandem , Animais , Cromatografia Líquida/métodos , Feminino , Masculino , Metaboloma , Metabolômica/métodos , Camundongos
7.
Biogerontology ; 23(1): 129-144, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35122572

RESUMO

Understanding how diet affects reproduction and survival is a central aim in evolutionary biology. Although this relationship is likely to differ between the sexes, we lack data relating diet to male reproductive traits. One exception to this general pattern is Drosophila melanogaster, where male dietary intake was quantified using the CApillary FEeder (CAFE) method. However, CAFE feeding reduces D. melanogaster survival and reproduction, so may distort diet-fitness outcomes. Here, we use the Geometric Framework of Nutrition to create nutrient landscapes that map sex-specific relationships between protein, carbohydrate, lifespan and reproduction in D. melanogaster. Rather than creating landscapes with consumption data, we map traits onto the nutrient composition of forty agar-based diets, generating broad coverage of nutrient space. We find that male and female lifespan was maximised on low protein, high carbohydrate blends (~ 1P:15.9C). This nutrient ratio also maximised male reproductive rates, but females required more protein to maximise daily fecundity (1P:1.22C). These results are consistent with CAFE assay outcomes. However, the approach employed here improved female fitness relative to CAFE assays, while effects of agar versus CAFE feeding on male fitness traits depended on the nutrient composition of experimental diets. We suggest that informative nutrient landscapes can be made without measuring individual nutrient intake and that in many cases, this may be preferable to using the CAFE approach. The most appropriate method will depend on the question and species being studied, but the approach adopted here has the advantage of creating nutritional landscapes when dietary intake is hard to quantify.


Assuntos
Drosophila melanogaster , Longevidade , Ágar/farmacologia , Animais , Carboidratos/farmacologia , Dieta , Dieta com Restrição de Proteínas , Ingestão de Alimentos , Feminino , Masculino , Proteínas , Reprodução , Caracteres Sexuais
8.
Eur J Pediatr ; 181(11): 3817-3829, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36098851

RESUMO

The impact of ethnicity on parental health outcome after paediatric intensive care unit (PICU) discharge remains unclear. Thirteen medical and healthcare databases, unpublished studies and grey literature were searched up to November 5, 2021. We performed a mixed-method systematic review to understand the impact of ethnicity on parental outcomes after PICU discharge, including eight quantitative and eight qualitative studies. Among 1529 parents included, 1064 (72%) were White. Higher prevalence of post-traumatic stress disorder was seen in Black parents (17% White vs 36% Black, p = .03). Latino ethnicity was found to have protective effect against anxiety as compared to White parents (coefficient - 4.27, p < .001). A total of 91 findings were aggregated into 14 categories, and the five synthesized themes from the eight qualitative studies were long-term psychological impact after PICU, use of coping strategies, challenges of re-integration, changes in relationships and the utilization of formal support services and resources. Mixed-method synthesis found that parents of ethnic minority group were underrepresented (18%) and had higher attrition rates in a longitudinal study as compared to White parents following childhood critical illness.   Conclusion: There are significant gaps in evidence related to the impact of ethnicity on long-term parental health outcomes after PICU discharge. Ethnic diversity and inclusiveness in long-term PICU research may aid understanding of the parental experiences and outcomes to close the gap in health disparity.


Assuntos
Etnicidade , Alta do Paciente , Criança , Humanos , Unidades de Terapia Intensiva Pediátrica , Estudos Longitudinais , Grupos Minoritários , Avaliação de Resultados em Cuidados de Saúde , Pais/psicologia
9.
Palliat Med ; 35(6): 1099-1107, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33983081

RESUMO

BACKGROUND: COVID-19 has tragically resulted in over 2.5 million deaths globally. Despite this, there is a lack of research on how to care for patients dying of COVID-19, specifically pharmacological management of symptoms. AIM: The aim was to determine the dose ranges of pharmacological interventions commonly used to manage symptoms in adult patients dying of COVID-19, establish how effectiveness of these interventions was measured, and whether the pharmacological interventions were effective. DESIGN: This was a rapid systematic review with narrative synthesis of evidence, prospectively registered on PROSPERO (ID: CRD42020210892). DATA SOURCES: We searched MEDLINE, EMBASE, CINAHL via the NICE Evidence Health Databases Advanced Search interface; medRxiv; the Cochrane COVID-19 Study Register; and Google Scholar with no date limits. We included primary studies which documented care of patients dying of COVID-19 under the care of a specialist palliative care team. RESULTS: Seven studies, documenting the care of 493 patients met the inclusion criteria. Approximately two thirds of patients required a continuous subcutaneous infusion with median doses of 15 mg morphine and 10 mg midazolam in the last 24 h of life. Four studies described effectiveness by retrospective review of documentation. One study detailed the effectiveness of individual medications. CONCLUSIONS: A higher proportion of patients required continuous subcutaneous infusion than is typically encountered in palliative care. Doses of medications required to manage symptoms were generally modest. There was no evidence of a standardised yet holistic approach to measure effectiveness of these medications and this needs to be urgently addressed.


Assuntos
COVID-19 , Adulto , Humanos , Morfina , Cuidados Paliativos , Estudos Retrospectivos , SARS-CoV-2
10.
Childs Nerv Syst ; 37(4): 1185-1190, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33009607

RESUMO

PURPOSE: While there are increasing numbers of studies published regarding Chiari I malformation (CM1) in children, most of these focus on surgical indications, technique, and outcomes. Few studies examine the natural history of CM1 once the decision is made to treat a patient conservatively. In this study, we seek to determine the percentage of pediatric patients who undergo surgery for CM1, both after initial consultation and in a delayed fashion, the natural history of CM1 after a decision to pursue non-operative management, and attempt to identify patient factors that may predict development of new or worsening CM1 symptoms. METHODS: From our database of 465 pediatric patients with CM1, we identified those who were seen for initial consultation from July 1, 2011, to June 30, 2016. We examined rates of surgical intervention, types of surgical intervention, age, gender, and presence or absence of headache and syrinx, and looked carefully at the patients who had new or worsening symptoms prompting delayed surgical intervention. RESULTS: We identified 226 patients meeting inclusion criteria. Overall, 15% of patients had surgery, the majority being Chiari decompression. Just over half of these patients had surgery within 6 months of initial consultation. Of those with delayed surgery, only 4 patients had new symptoms/syrinx and 1 patient had symptom progression. The other patients had various reasons for surgical delay not related to symptom development or progression. There were no obvious commonalities among these 5 patients that could predict progression prospectively. All patients who had surgery did so within 2 years of initial consultation. CONCLUSION: Overall, the natural history of asymptomatic CM1 is benign. Patients treated non-operatively are unlikely to progress. If they do progress, this is likely to occur within 2 years of initial consultation. There were no factors identified in this study that predicted new or worsening symptoms over time.


Assuntos
Malformação de Arnold-Chiari , Siringomielia , Malformação de Arnold-Chiari/cirurgia , Criança , Descompressão Cirúrgica , Cefaleia , Humanos , Encaminhamento e Consulta , Estudos Retrospectivos , Resultado do Tratamento
11.
J Adv Nurs ; 77(8): 3531-3541, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34081353

RESUMO

AIM: To explore and understand the impact of paediatric intensive care unit (PICU) admission on longitudinal health outcomes, experiences and support needs of children and their parents in the first 6 months after PICU discharge and to examine the role of ethnicity. DESIGN: This study uses a prospective, longitudinal design. METHODS: The sample will include children (N = 110) and at least one parent (N = 110) admitted to the PICU (KKH-AM start-up fund, October 2020). Quantitative study: Participants will be recruited at PICU admission. Data will be collected at five time points: during PICU admission (T0), at PICU discharge (T1), 1 month (T2), 3 months (T3) and 6 months (T4) after PICU discharge. Questionnaires will assess physical and cognitive outcomes of the child survivor. Emotional and social health outcomes will be assessed for both the child and the parents. Qualitative study: At least 12 parents will take part in a semi-structured interview conducted at both 1 and 6 months after PICU to explore their experiences and support needs after PICU discharge. All interviews will be audio-recorded with verbatim transcription. We will use framework analysis for qualitative data analysis. DISCUSSION: Understanding of Singapore health outcomes after critical illness in kids (SHACK) and their families is limited. There is an urgent need to comprehensively understand the health trajectory and consequences of the PICU child survivors and their families. This research will be the first to explore the health outcomes, needs and experiences after paediatric critical illness in Asia. IMPACT: This study will provide an understanding of the health outcomes and trajectory of children and parents in the first 6 months after PICU discharge and examine the association between race and outcomes after PICU discharge. Identification of modifiable pre-disposing risk factors during the PICU admission will inform future interventions to improve long-term outcomes of children and parents following paediatric critical illness. TRIAL REGISTRATION: Clinicaltrial.gov: ClinicalTrials.gov Identifier: NCT04637113.


Assuntos
Estado Terminal , Unidades de Terapia Intensiva Pediátrica , Ásia , Criança , Humanos , Avaliação de Resultados em Cuidados de Saúde , Estudos Prospectivos , Singapura
12.
J Gen Intern Med ; 35(6): 1821-1829, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32270403

RESUMO

BACKGROUND: Amid growing antimicrobial resistance, there is an increasing focus on antibiotic stewardship efforts to reduce inappropriate antibiotic prescribing. In this context, novel approaches for treating infections without antibiotics are being explored. One such strategy is the use of non-steroidal anti-inflammatory drugs (NSAIDs) for uncomplicated urinary tract infections (UTIs). Therefore, we conducted a systematic review of randomized controlled trials to evaluate the rates of symptom resolution and infectious complications in adult women with uncomplicated UTIs treated with antibiotics versus NSAIDs. METHODS: We systematically searched PubMed, CINHAL, Scopus, Web of Science Core Collection, EMBASE, and ClinicalTrials.gov from inception until January 13, 2020, for randomized controlled trials comparing NSAIDs with antibiotics for treatment of uncomplicated UTIs in adult women. Studies comparing symptom resolution between groups were eligible. Two authors screened all studies independently and in duplicate; data were abstracted using a standardized template. Risk of bias was assessed using the Cochrane Collaboration tool. RESULTS: Five randomized trials that included 1309 women with uncomplicated UTI met inclusion criteria. Three studies (1130 patients) favored antibiotic therapy in terms of symptom resolution. Two studies (179 patients) found no difference between NSAIDs and antibiotics in terms of symptom resolution. Three studies reported rates of pyelonephritis, two of which found higher rates in patients treated with NSAIDs versus antibiotics. Between two studies that reported this outcome (747 patients), patients randomized to NSAIDs received fewer antibiotic prescriptions compared with those in the antibiotics group. Three studies were at low risk of bias, one had an unclear risk of bias, and one was at high risk of bias. DISCUSSION: For the outcomes of symptom resolution and complications in adult women with UTI, evidence favors antibiotics over NSAIDs. PROSPERO: CRD42018114133.


Assuntos
Infecções Urinárias , Adulto , Antibacterianos/uso terapêutico , Anti-Inflamatórios não Esteroides/uso terapêutico , Feminino , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Infecções Urinárias/tratamento farmacológico
13.
J Evol Biol ; 33(11): 1606-1613, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32896904

RESUMO

Within populations, adult sex ratios influence population growth and extinction risk, mating behaviours and parental care. Sex ratio adjustment can also have pronounced effects on individual fitness. Accordingly, it is important that we understand how often, and why, offspring sex ratios deviate from parity. In Drosophila melanogaster, females appear to improve their fitness by producing fewer sons when paired with older males. However, facultative sex ratio adjustment in D. melanogaster is controversial, and our understanding of how sex ratio skew affects fitness is hampered by pronounced sexual conflict in this species. Additionally, it is unclear whether maternal age or quality interacts with paternal age to influence offspring sex ratios. Here, we test whether offspring sex ratios vary as a function of maternal quality, and maternal and paternal age in Drosophila simulans, a sister species of D. melanogaster that lacks overt sexual conflict. We find that offspring sex ratios are slightly male-biased overall, but constant across the female life course, and independent of female quality, or paternal age. To really understand if, how and when females skew offspring sex ratios, we need studies linking offspring sex ratios to paternal and maternal phenotypes that are predicted to shift optimal investment in sons and daughters.


Assuntos
Envelhecimento/fisiologia , Drosophila simulans/fisiologia , Reprodução , Razão de Masculinidade , Animais , Feminino , Masculino , Idade Materna
14.
Anat Sci Educ ; 17(6): 1189-1197, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38965049

RESUMO

Dissection of bodies provided by donors continues to be utilized as a critical part of medical education. It also represents a rite of passage that socializes students to prepare them for the stress that comes with working in a clinical environment as a medical professional. Just as proper guidance in acquiring technical skills is critical in anatomy education, there is an important need for proper emotional guidance throughout the human dissection process. A pilot curriculum was developed by an interdisciplinary faculty team to emotionally prepare students for their first visit to the anatomy laboratory. Students were first-year foundation premedical students who had expressed an interest in visiting the laboratory. Pre- and post-visit surveys were conducted to explore students' emotional responses to a first visit to the anatomy laboratory and their utilization of coping strategies. The survey findings show an overwhelming favorable feeling in anticipation of the human gross anatomy laboratory visit. About 20% of the students experienced anxiety at the anticipation of the laboratory visit, but only 5.3% experienced anxiety during the visit. The decrease in the number of students experiencing anxiety may be attributed to the interventions introduced before and during the visit. Talking with a close friend was the main coping strategy utilized by 63% of students experiencing fear or anxiety during and after the laboratory visit. The findings from this program evaluation provide a better understanding of student emotional preparedness and utilization of coping strategies, which may help prepare and guide future students for the dissection experience.


Assuntos
Adaptação Psicológica , Anatomia , Currículo , Dissecação , Educação Pré-Médica , Emoções , Avaliação de Programas e Projetos de Saúde , Humanos , Projetos Piloto , Dissecação/educação , Dissecação/psicologia , Anatomia/educação , Feminino , Masculino , Doadores de Tecidos/psicologia , Doadores de Tecidos/educação , Estudantes Pré-Médicos/psicologia , Cadáver , Ansiedade/prevenção & controle , Ansiedade/etiologia , Adulto Jovem , Inquéritos e Questionários
15.
Compr Child Adolesc Nurs ; : 1-11, 2024 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-39241204

RESUMO

This paper presents a narrative review protocol to explore how the proportion of child-specific content of pre-registration programmes in universities impact upon newly qualified nurses' perceptions of preparedness to care for children, young people (CYP), and their families. The preparation and education to become a nurse who cares for children and young people differs from country to country. Providers of pre-registration nurse education offer routes into nursing from diploma to degree and in some countries post-graduate routes. The United Kingdom offers pre-registration programmes leading to qualifying as a children's nurse whereas programmes in countries such as the USA and Canada lead to a professional registration as a registered nurse with postgraduate study to specialize in areas such as pediatrics. The role of pre-registration nursing programmes is to facilitate preparedness for practice. Preparation for practice can include theoretical teaching and practice learning through simulation and face-to-face experience with countries requiring different numbers of practice hours to be completed. Although practice hours are central to nursing education, there is limited evidence on the impact and portion of child-specific content, including clinical learning in preparation of newly qualified nurses to care for CYP and their families. A preliminary search of Prospero, CINAHL, Medline and Cochrane Database indicates that there are no current or in progress reviews identified. The Population of interest, Exposure of interest, and Outcome framework were used to define the research question and inform the eligibility criteria. The review will consider different research designs if related to the research question. The search strategy will conform to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines for systematic reviews. Two independent reviewers will be involved in the screening progress to determine the final studies for inclusion. Eligible studies will be assessed for methodological quality using the Joanna Briggs Institute critical appraisal tools. Extraction of study characteristics and data related to the research question will be extracted into a predefined table. Data synthesis will be conducted using a descriptive analytical approach to summarize extracted data.

16.
Children (Basel) ; 11(8)2024 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-39201883

RESUMO

Childhood critical illness can have long-term effects on families, but the extent and trajectory of recovery for parents are unknown. Using prospective longitudinal design, we describe the health outcomes of parents and their trajectory six months after paediatric intensive care unit (PICU) discharge. Parents reported health outcomes at PICU discharge (baseline), and 1-, 3-, and 6-months post-discharge. We used the Pediatric Quality-of-Life Family Impact Module, Patient Health Questionnaire-4, and post-traumatic stress disorder (PTSD) Checklist for DSM-5. The group-based trajectory model was used to identify recovery patterns. We included 128 parents of children aged 1 month to 18 years, admitted to the PICU for ≥48 h. Three post-discharge composite health trajectory groups were classified: 54 mild (42%), 68 moderate (53%), and 6 severe (4%). Parents in the mild and moderate groups returned to baseline health within the first 3 months, but those in the severe group exhibited worse outcomes at 6-months. The mean (SD) PICU stay durations for mild, moderate, and severe groups were 9 (16), 7 (10), and 38 (61) days; days of mechanical ventilation were 4 (5), 4 (7), and 18 (25) days; and readmission rates were 12 (22%), 23 (34%), and 4 (66%), respectively. Identifying these trajectories enables novel, targeted interventions for at-risk parents, underscoring the significance of integrated PICU follow-up care.

17.
J Pain Symptom Manage ; 68(4): 402-409, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39002713

RESUMO

INTRODUCTION: ST-elevation myocardial infarction (STEMI) remains a leading cause of death despite advances in revascularization and post-STEMI care. Especially for patients with a poor prognosis, there is increasing emphasis on comfort-focused care. METHODS: We conducted a single-center retrospective cohort study of patients with STEMI at a large tertiary care academic medical center, abstracting patient-level data, causes of death, and use of palliative care consultation from the medical records. We sought to investigate the frequency of comfort-focused approaches and palliative care consultation after STEMI. RESULTS: A total of 536 patients presented with or were transferred with STEMI from January 2010 to July 2018, of whom 61/536 (11.4%) died during index hospitalization. Among those who underwent percutaneous intervention (PCI), the in-hospital mortality rate was 6.8%. Median (IQR) and time to death was two (0-6) days. Among those who died, 25/61 (41%) were treated with mechanical circulatory support (MCS). A total of 25/61 (41%) patients died following transition to a comfort-focused approach. Rate of MCS utilization during hospitalization was higher in the group that was ultimately transitioned to comfort-focused measures than the group who received full treatment measures. Palliative care was consulted in the case of 6/61 (9.8%) patients. Median time to consultation was 5 (1-7) days and time to death was 6.5 (2-28) days. DISCUSSION: Transition to comfort-focused care before death after STEMI is common, particularly in those with cardiogenic shock and/or treated with MCS, highlighting the critical status of such patients. Although increasingly employed in recent years, palliative care consults remain rare and are often employed late in the hospitalization.


Assuntos
Mortalidade Hospitalar , Cuidados Paliativos , Conforto do Paciente , Encaminhamento e Consulta , Infarto do Miocárdio com Supradesnível do Segmento ST , Humanos , Masculino , Feminino , Estudos Retrospectivos , Idoso , Infarto do Miocárdio com Supradesnível do Segmento ST/terapia , Infarto do Miocárdio com Supradesnível do Segmento ST/mortalidade , Pessoa de Meia-Idade , Intervenção Coronária Percutânea , Hospitalização
18.
Artigo em Inglês | MEDLINE | ID: mdl-39060092

RESUMO

BACKGROUND: Prion diseases are a group of rare, neurodegenerative conditions that are invariably fatal and cause a variety of symptoms, which can prove challenging to control. Through this paper, we aim to review the current evidence regarding pharmacological management of neuropsychiatric and motor symptoms of prion disease as well as draw on experts' and relatives' experience, to evaluate the current evidence and provide recommendations moving forwards. METHODS: A scoping review of the literature for pharmacological management of symptoms was conducted using the systematic review tool, COVIDENCE, with searches conducted through four databases. 120 papers were selected for inclusion, and data extraction was carried out by two independent reviewers. Given the lack of high-quality data and small numbers, no further attempt at statistical analysis was made, and results are presented in a thematic synthesis. RESULTS: Although a broad range of approaches and pharmacotherapies are trialled to manage these challenging symptoms, there are patterns emerging of some efficacy seen with the use of benzodiazepines, antipsychotic and anticonvulsant medications in both motor and neuropsychiatric symptoms in prion disease. These approaches and associated challenges were reflected in international expert opinion that was gathered via online survey. CONCLUSION: There continues to be a paucity of good-quality evidence and we suggest a need for longitudinal, population-based and standardised research to allow a robust evidence base, which in turn will guide excellent symptom control and end of life care for this group of complex patients.

19.
J Heart Lung Transplant ; 43(9): 1395-1408, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38744352

RESUMO

BACKGROUND: Sarcopenia, characterized by loss of muscle mass and function, is prevalent in heart failure (HF) and predicts poor outcomes. We investigated alterations in sarcopenia index (SI), a surrogate for skeletal muscle mass, in HF, left ventricular assist device (LVAD), and heart transplant (HT), and assessed its relationship with inflammation and digestive tract (gut and oral) microbiota. METHODS: We enrolled 460 HF, LVAD, and HT patients. Repeated measures pre/post-procedures were obtained prospectively in a subset of LVAD and HT patients. SI (serum creatinine/cystatin C) and inflammatory biomarkers (C-reactive protein, interleukin-6, tumor necrosis factor-alpha) were measured in 271 and 622 blood samples, respectively. Gut and saliva microbiota were assessed via 16S ribosomal ribonucleic acid sequencing among 335 stool and 341 saliva samples. Multivariable regression assessed the relationship between SI and (1) New York Heart Association class; (2) pre- versus post-LVAD or HT; and (3) biomarkers of inflammation and microbial diversity. RESULTS: Median (interquartile range) natural logarithm (ln)-SI was -0.13 (-0.32, 0.05). Ln-SI decreased across worsening HF class, further declined at 1 month after LVAD and HT, and rebounded over time. Ln-SI was correlated with inflammation (r = -0.28, p < 0.01), gut (r = 0.28, p < 0.01), and oral microbial diversity (r = 0.24, p < 0.01). These associations remained significant after multivariable adjustment in the combined cohort but not for all individual cohorts. The presence of the gut taxa Roseburia inulinivorans was associated with increased SI. CONCLUSIONS: SI levels decreased in symptomatic HF and remained decreased long-term after LVAD and HT. In the combined cohort, SI levels covaried with inflammation in a similar fashion and were significantly related to overall microbial (gut and oral) diversity, including specific taxa compositional changes.


Assuntos
Microbioma Gastrointestinal , Insuficiência Cardíaca , Transplante de Coração , Coração Auxiliar , Inflamação , Sarcopenia , Humanos , Feminino , Masculino , Sarcopenia/microbiologia , Coração Auxiliar/efeitos adversos , Coração Auxiliar/microbiologia , Pessoa de Meia-Idade , Insuficiência Cardíaca/microbiologia , Insuficiência Cardíaca/cirurgia , Insuficiência Cardíaca/fisiopatologia , Microbioma Gastrointestinal/fisiologia , Estudos Prospectivos , Microbiota , Idoso , Biomarcadores/metabolismo , Boca/microbiologia
20.
Prev Chronic Dis ; 10: E198, 2013 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-24286272

RESUMO

INTRODUCTION: Older adults have higher rates of emergency department use than do younger adults, and the number of centenarians is expected to increase. The objective of this study was to examine centenarians' use of the emergency department in the United States, including diagnoses, charges, and disposition. METHODS: The 2008 Nationwide Emergency Department Sample, Healthcare Cost and Utilization Project, Agency for Healthcare Research and Quality provided encounter-level data on emergency department visits and weights for producing nationwide estimates. From this data set, we collected patient characteristics including age, sex, primary diagnosis, and disposition. We used χ(2) tests and t tests to test for significant differences among people aged 80 to 89, 90 to 99, and 100 years or older. RESULTS: Centenarians had a lower rate of emergency department use than those aged 90 to 99 (736 per 1,000 vs 950 per 1,000; P < .05). We found no significant difference in use between centenarians and those aged 80 to 89. The most common diagnoses for centenarians were superficial injuries (5.8% of visits), pneumonia (5.1%), and urinary tract infections (5.1%). Centenarians were more likely to visit the emergency department for fall-related injuries (21.5%) than those aged 80 to 89 (14.1%; P < .05) and 90 to 99 (18.7%; P < .05). Centenarians were more likely to die in the emergency department (2.0%) than were those aged 80 to 89 (0.6%; P < .05) and 90 to 99 (0.7%; P < .05). CONCLUSION: Centenarians in emergency departments in the United States have different diagnoses, conditions, and outcomes than other older Americans.


Assuntos
Doença Crônica/epidemiologia , Serviço Hospitalar de Emergência/estatística & dados numéricos , Fatores Etários , Idoso de 80 Anos ou mais , Doença Crônica/prevenção & controle , Feminino , Serviços de Saúde para Idosos , Humanos , Masculino , Estados Unidos/epidemiologia
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