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1.
Mol Cell Biochem ; 477(6): 1865-1872, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35334035

RESUMO

Diabetes mellitus (DM)-induced cardiac morbidities have been the leading cause of death among diabetic patients. Recently, sodium-glucose cotransporter-2 (SGLT-2) inhibitors including empagliflozin (EMPA), which have been approved for the treatment of DM, have gained attention for their cardioprotective effect. The mechanism by which SGLT-2 inhibitors exert their cardioprotective effect remains unclear. Recent studies have suggested that EMPA exerts its cardioprotective effect by inhibiting the Na+/H+ exchanger (NHE), a group of membrane proteins that regulate intracellular pH and cell volume. Increased activity and expression of NHE isoform 1 (NHE1), the predominant isoform expressed in the heart, leads to cardiac hypertrophy. p90 ribosomal s6 kinase (p90 RSK) has been demonstrated to stimulate NHE1 activity. In our study, H9c2 cardiomyoblasts were treated with angiotensin II (ANG) to activate NHE1 and generate a hypertrophic model. We aimed to understand whether EMPA reverses the ANG-induced hypertrophic response and to elucidate the molecular pathway contributing to the cardioprotective effect of EMPA. Our study demonstrated that ANG-induced hypertrophy of H9c2 cardiomyoblasts is accompanied with increased SGLT-1 and NHE1 protein expression, an effect which is prevented in the presence of EMPA. EMPA reduces ANG-induced hypertrophy through the inhibition of SGLT-1 and NHE1 expression.


Assuntos
Angiotensina II , Miócitos Cardíacos , Angiotensina II/metabolismo , Angiotensina II/farmacologia , Compostos Benzidrílicos , Cardiomegalia/induzido quimicamente , Cardiomegalia/tratamento farmacológico , Cardiomegalia/metabolismo , Glucosídeos/farmacologia , Humanos , Miócitos Cardíacos/metabolismo
2.
Surg Endosc ; 36(1): 533-543, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-33606115

RESUMO

BACKGROUND: After the declaration of COVID-19 as a pandemic last March 2020, several adjustments in surgical services were implemented. Plans are now being formulated for restarting bariatric surgery. The aim of this survey is to capture the practice during the pandemic and the readiness to restart to provide a framework to deal with the backlog of bariatric cases. METHOD: A survey was delivered to consultant surgeon members of the British Obesity and Metabolic Surgery Society and non-bariatric surgery consultant members of the Association of Upper GI Surgeons. RESULTS: The survey elicited a response rate of 40% (n = 66) among bariatric surgeons and 15.5% (n = 34) between non-bariatric surgeons. The average question response rate was 93% (88-100%). Most of the elective bariatric surgeries and clinics were cancelled early after declaration of the pandemic. Remote technologies for patient education evolved and were used heavily during the pandemic. The average cancelled elective bariatric surgery operations per week was 9. Nearly a quarter of responders reported performing emergency bariatric surgery during the pandemic. Most of the bariatric surgeons reported being ready to restart the service within 1-2 months. Responders recommended using private sector beds to increase NHS capacity and using the link between obesity and poor COVID-19 outcomes to push for prioritisation of bariatric patients. CONCLUSION: This survey is an attempt to understand the impact of COVID-19 on UK bariatric service and the preparedness to restart. It expressed the bariatric surgery consultants' view of prioritisation of bariatric patients on clinical basis rather than the first-come-first-served basis.


Assuntos
Cirurgia Bariátrica , COVID-19 , Humanos , Obesidade/epidemiologia , Obesidade/cirurgia , SARS-CoV-2 , Inquéritos e Questionários , Reino Unido/epidemiologia
3.
Int J Mol Sci ; 23(6)2022 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-35328458

RESUMO

Single-cell RNA sequencing (RNA-seq) techniques can perform analysis of transcriptome at the single-cell level and possess an unprecedented potential for exploring signatures involved in tumor development and progression. These techniques can perform sequence analysis of transcripts with a better resolution that could increase understanding of the cellular diversity found in the tumor microenvironment and how the cells interact with each other in complex heterogeneous cancerous tissues. Identifying the changes occurring in the genome and transcriptome in the spatial context is considered to increase knowledge of molecular factors fueling cancers. It may help develop better monitoring strategies and innovative approaches for cancer treatment. Recently, there has been a growing trend in the integration of RNA-seq techniques with contemporary omics technologies to study the tumor microenvironment. There has been a realization that this area of research has a huge scope of application in translational research. This review article presents an overview of various types of single-cell RNA-seq techniques used currently for analysis of cancer tissues, their pros and cons in bulk profiling of transcriptome, and recent advances in the techniques in exploring heterogeneity of various types of cancer tissues. Furthermore, we have highlighted the integration of single-cell RNA-seq techniques with other omics technologies for analysis of transcriptome in their spatial context, which is considered to revolutionize the understanding of tumor microenvironment.


Assuntos
Neoplasias , Transcriptoma , Perfilação da Expressão Gênica , Humanos , Neoplasias/genética , Análise de Sequência de RNA , Análise de Célula Única/métodos , Microambiente Tumoral/genética
4.
J Cardiothorac Vasc Anesth ; 35(1): 84-88, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32891521

RESUMO

OBJECTIVES: The primary objective was to compare the rate of first-pass radial arterial cannulation using out-of-plane ultrasound guidance with in-plane imaging. The secondary endpoints were a comparison of the number of times the cannula was redirected, the number of attempts, the number of skin punctures, the incidence of hematoma, the time to completion of the cannulation procedure, and the number of failed attempts between the 2 ultrasound imaging techniques. DESIGN: A prospective, randomized, observational study. SETTING: A tertiary cardiac care center. PARTICIPANTS: Adult patients undergoing elective cardiac surgery. INTERVENTIONS: Radial artery cannulation with ultrasound guidance. MEASUREMENTS AND MAIN RESULTS: Eighty-four adult patients scheduled for elective cardiac surgery were randomly assigned to the out-of-plane ultrasound group (group I, n = 42) or the in-plane ultrasound group (group II, n = 42) for left radial artery cannulation. A linear ultrasound probe was used to identify the radial artery. In each approach, the number of times first-pass success was achieved, the number of times the cannula was redirected, the number of skin punctures, the incidence of hematomas, and the number of failed attempts were recorded. The first-pass success rate was greater in the in-plane ultrasound group and was statistically significant (p = 0.007). In the out-of-plane ultrasound group, a larger number of patients needed redirection of the cannula (p = 0.002). The number of patients in whom the skin needed to be punctured more than once was greater in the out-of-plane ultrasound group compared with the in-plane ultrasound group (p = 0.002). The incidence of hematoma formation and time to completion of the technique were similar in both groups (p = 0.241 and p = 0.792, respectively). CONCLUSIONS: In-plane ultrasound guidance appeared to be superior for achieving a higher first-pass success rate more often with minimal redirections and skin punctures compared with out-of-plane ultrasound guidance.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Cateterismo Periférico , Adulto , Humanos , Estudos Prospectivos , Artéria Radial/diagnóstico por imagem , Artéria Radial/cirurgia , Ultrassonografia , Ultrassonografia de Intervenção
5.
Int J Mol Sci ; 22(23)2021 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-34884494

RESUMO

Abnormality in glucose homeostasis due to hyperglycemia or insulin resistance is the hallmark of type 2 diabetes mellitus (T2DM). These metabolic abnormalities in T2DM lead to cellular dysfunction and the development of diabetic cardiomyopathy leading to heart failure. New antihyperglycemic agents including glucagon-like peptide-1 receptor agonists and the sodium-glucose cotransporter-2 inhibitors (SGLT2i) have been shown to attenuate endothelial dysfunction at the cellular level. In addition, they improved cardiovascular safety by exhibiting cardioprotective effects. The mechanism by which these drugs exert their cardioprotective effects is unknown, although recent studies have shown that cardiovascular homeostasis occurs through the interplay of the sodium-hydrogen exchangers (NHE), specifically NHE1 and NHE3, with SGLT2i. Another theoretical explanation for the cardioprotective effects of SGLT2i is through natriuresis by the kidney. This theory highlights the possible involvement of renal NHE transporters in the management of heart failure. This review outlines the possible mechanisms responsible for causing diabetic cardiomyopathy and discusses the interaction between NHE and SGLT2i in cardiovascular diseases.


Assuntos
Doenças Cardiovasculares/tratamento farmacológico , Diabetes Mellitus Tipo 2/complicações , Cardiomiopatias Diabéticas/tratamento farmacológico , Inibidores do Transportador 2 de Sódio-Glicose/uso terapêutico , Trocadores de Sódio-Hidrogênio/metabolismo , Animais , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/metabolismo , Doenças Cardiovasculares/patologia , Cardiomiopatias Diabéticas/etiologia , Cardiomiopatias Diabéticas/metabolismo , Cardiomiopatias Diabéticas/patologia , Humanos
6.
Surg Endosc ; 34(5): 2076-2081, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31392513

RESUMO

BACKGROUND: An excessively long-blind end of the alimentary limb following a Roux-en-Y gastric bypass (RYGB), known as a 'candy cane' (CC), may cause symptoms including abdominal pain, regurgitation and vomiting. Very few studies have examined the efficacy of surgical resection of the CC. OBJECTIVES: The aim of this study was to assess sensitivity of preoperative diagnostic tools for CC, as well as perioperative outcomes and symptom resolution after CC revision surgery. SETTING: High volume bariatric centre of excellence, United Kingdom. METHODS: Observational study of CC revisions from 2010 to 2017. RESULTS: Twenty-eight CC revision cases were identified (mean age 45 ± 9 years, female preponderance 9:1). Presenting symptoms were abdominal pain (86%), regurgitation/vomiting (43%), suboptimal weight loss (36%) and acid reflux (21%). Preoperative tests provided correct diagnosis in 63% of barium contrast swallows, 50% of upper gastrointestinal endoscopies and 29% computed tomographies. Patients presenting with pain had significantly higher CC size as compared with pain-free group (4.2 vs. 2 cm, p = 0.001). Perioperative complications occurred in 25% of cases. Complete or partial symptom resolution was documented in 73% of patients undergoing CC revision. Highest success rates were recorded in the regurgitation/vomiting group (67%). CONCLUSION: Surgical revision of CC is associated with good symptom resolution in the majority of patients, especially those presenting with regurgitation/vomiting. However, it carries certain risk of complications. CC diagnosis may frequently be missed; hence more than one diagnostic tool should be considered when investigating symptomatic patients after RYGB.


Assuntos
Derivação Gástrica/métodos , Obesidade Mórbida/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
7.
J Obstet Gynaecol Can ; 42(1): 16-24, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31787548

RESUMO

OBJECTIVE: This study aimed to explore the attitudes of obstetrics and gynaecology residents in Canada towards interventions that influence caesarean section rates. The study looked at residents' attitudes towards four guidelines that support vaginal and assisted delivery (vaginal birth after caesarean section, induction of labour, operative vaginal birth, and fetal health surveillance in labour) and towards Society of Obstetricians and Gynaecologists of Canada (SOGC) guidelines in general. The study also sought to investigate whether these attitudes vary by residency training location. METHODS: An online survey of obstetrics and gynaecology residents across Canada was conducted. Residents responded to statements derived from guidelines using a five-point attitudinal scale and to an optional long-answer question about how residency has prepared them to make decisions around interventions. Descriptive summary statistics are used to present the findings (Canadian Task Force Classification III). RESULTS: A total of 27% of residents completed the survey. The majority demonstrated attitudes congruent with guidelines and favourable towards SOGC guidelines in general. Residents attitudes were least favourable towards electronic fetal monitoring, with 67.4% of responses congruent with the guideline. Attitudes were most aligned with the operative vaginal birth guideline, with 87.9% of responses congruent with the guideline. This sample was underpowered to detect statistically significant differences among residency programs, although there was some variation in attitudes across programs, with the most congruent scoring program at 81.8% congruent responses and the lowest at 66.7%. CONCLUSION: Obstetrics and gynaecology residents in Canada have favourable attitudes towards interventions that support vaginal and assisted delivery. There was variability in observed attitudes across programs, although this was not statistically significant.


Assuntos
Atitude do Pessoal de Saúde , Cesárea , Ginecologia/educação , Internato e Residência , Obstetrícia/educação , Guias de Prática Clínica como Assunto , Estudantes de Medicina , Adulto , Canadá , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Gravidez , Sociedades Médicas , Inquéritos e Questionários , Adulto Jovem
8.
J Obstet Gynaecol Can ; 41(10): 1444-1452, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30712906

RESUMO

OBJECTIVE: This study sought to compare clinical outcomes of midwifery clients who had postdates induction of labour with oxytocin under midwifery care with those transferred to obstetrical care. METHODS: This was a retrospective cohort study using 2006-2009 Ontario Midwifery Program data. All low-risk Ontario midwifery clients who had postdates oxytocin induction were included. Groups were established according to the planned care provider at onset of induction. The primary outcome was Cesarean section (CS). The secondary outcome was a composite of stillbirth, neonatal death, or serious morbidity. Other outcomes included assisted vaginal delivery, pharmaceutical pain relief, and use of episiotomy. We stratified by parity and used logistic regression to conduct analyses controlling for maternal age (Canadian Task Force Classification II-2). RESULTS: For nulliparas, postdates induction with oxytocin under midwifery care decreased the odds of interventions including assisted vaginal delivery (OR 0.68; 95% CI 0.48-0.97), episiotomy (OR 0.49; 95% CI 0.34-0.70), and pharmaceutical pain relief (OR 0.57; 95% CI 0.36-0.90), with no difference in odds of neonatal morbidity or mortality (OR 0.71; 95% CI 0.25-2.04) when compared with induction under obstetrical care. For multiparas, the use of pharmaceutical pain relief was significantly lower in the midwifery group (OR 0.65; 95% CI 0.44-0.96). CONCLUSION: For low-risk midwifery clients at 41 weeks or more gestation, the odds of Caesarean section and neonatal morbidity and mortality are similar when induction of labour with oxytocin under the care of a midwife is compared with induction of labour under obstetrical care, and rates of intervention are decreased.


Assuntos
Analgesia Obstétrica/estatística & dados numéricos , Cesárea/estatística & dados numéricos , Trabalho de Parto Induzido , Tocologia , Obstetrícia , Transferência de Pacientes , Gravidez Prolongada/terapia , Natimorto/epidemiologia , Adulto , Estudos de Coortes , Episiotomia/estatística & dados numéricos , Extração Obstétrica/estatística & dados numéricos , Feminino , Humanos , Modelos Logísticos , Razão de Chances , Ontário/epidemiologia , Ocitócicos , Ocitocina , Paridade , Morte Perinatal , Gravidez , Estudos Retrospectivos , Adulto Jovem
9.
Sensors (Basel) ; 19(7)2019 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-30935150

RESUMO

There is an utmost requirement for technology to control a driver's phone while driving, which will prevent the driver from being distracted and thus saving the driver's and passenger's lives. Information from recent studies has shown that 70% of the young and aware drivers are used to texting while driving. There are many different technologies used to control mobile phones while driving, including electronic device control, global positioning system (GPS), on-board diagnostics (OBD)-II-based devices, mobile phone applications or apps, etc. These devices acquire the vehicle information such as the car speed and use the information to control the driver's phone such as preventing them from making or receiving calls at specific speed limits. The information from the devices is interfaced via Bluetooth and can later be used to control mobile phone applications. The main aim of this paper is to propose the design of a portable system for monitoring the use of a mobile phone while driving and for controlling a driver's mobile phone, if necessary, when the vehicle reaches a specific speed limit (>10 km/h). A paper-based self-reported questionnaire survey was carried out among 600 teenage drivers from different nationalities to see the driving behavior of young drivers in Qatar. Finally, a mobile application was developed to monitor the mobile usage of a driver and an OBD-II module-based portable system was designed to acquire data from the vehicle to identify drivers' behavior with respect to phone usage, sudden lane changes, and abrupt breaking/sharp speeding. This information was used in a mobile application to control the driver's mobile usage as well as to report the driving behavior while driving. The application of such a system can significantly improve drivers' behavior all over the world.


Assuntos
Condução de Veículo/estatística & dados numéricos , Comportamento , Acidentes de Trânsito/estatística & dados numéricos , Adolescente , Adulto , Condução de Veículo/psicologia , Telefone Celular , Feminino , Sistemas de Informação Geográfica , Humanos , Masculino , Aplicativos Móveis , Projetos Piloto , Adulto Jovem
10.
Sensors (Basel) ; 19(12)2019 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-31226858

RESUMO

Heart attack is one of the leading causes of human death worldwide. Every year, about 610,000 people die of heart attack in the United States alone-that is one in every four deaths-but there are well understood early symptoms of heart attack that could be used to greatly help in saving many lives and minimizing damages by detecting and reporting at an early stage. On the other hand, every year, about 2.35 million people get injured or disabled from road accidents. Unexpectedly, many of these fatal accidents happen due to the heart attack of drivers that leads to the loss of control of the vehicle. The current work proposes the development of a wearable system for real-time detection and warning of heart attacks in drivers, which could be enormously helpful in reducing road accidents. The system consists of two subsystems that communicate wirelessly using Bluetooth technology, namely, a wearable sensor subsystem and an intelligent heart attack detection and warning subsystem. The sensor subsystem records the electrical activity of the heart from the chest area to produce electrocardiogram (ECG) trace and send that to the other portable decision-making subsystem where the symptoms of heart attack are detected. We evaluated the performance of dry electrodes and different electrode configurations and measured overall power consumption of the system. Linear classification and several machine algorithms were trained and tested for real-time application. It was observed that the linear classification algorithm was not able to detect heart attack in noisy data, whereas the support vector machine (SVM) algorithm with polynomial kernel with extended time-frequency features using extended modified B-distribution (EMBD) showed highest accuracy and was able to detect 97.4% and 96.3% of ST-elevation myocardial infarction (STEMI) and non-ST-elevation MI (NSTEMI), respectively. The proposed system can therefore help in reducing the loss of lives from the growing number of road accidents all over the world.


Assuntos
Coração/fisiopatologia , Monitorização Fisiológica/métodos , Infarto do Miocárdio/diagnóstico , Dispositivos Eletrônicos Vestíveis , Acidentes , Algoritmos , Eletrocardiografia , Humanos , Infarto do Miocárdio/prevenção & controle , Máquina de Vetores de Suporte
11.
J Fam Nurs ; 25(3): 370-394, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31328621

RESUMO

Despite the key role that hospital and home care nurses have in supporting family carers in transitional care, there is limited comparative information on their attitudes toward supporting family carers during care transitions. As part of a larger research project, we conducted a descriptive comparative study using a cross-sectional survey. Canadian nurses (105 hospital, 34 home visiting) completed a demographic questionnaire and the Families' Importance in Nursing Care-Nurses' Attitudes (FINC-NA) measurement tool. There were no statistically significant differences between hospital and home visiting nurses' attitudes, which were positive about including families in care. Nurses who reported having a workplace philosophy or general approach to the care of family held more positive attitudes toward families than those who did not. This is important because positive attitudes are often linked to better communication with family carers and thus, better patient and carer outcomes. To our knowledge, only one Canadian master's thesis has used this tool. Thus, this research furthers understanding of nurse attitudes within a Canadian context. Furthermore, this article adds to the literature by including suggestions for future research that are based in social psychological theories. Interdisciplinary knowledge can help pre- and postlicensure clinicians in advanced family nursing to better lever barriers and facilitators within family nursing practice.


Assuntos
Atitude do Pessoal de Saúde , Enfermagem Familiar/organização & administração , Enfermeiros de Saúde Comunitária/psicologia , Recursos Humanos de Enfermagem Hospitalar/psicologia , Relações Profissional-Família , Cuidado Transicional/organização & administração , Adulto , Canadá , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
12.
BMC Public Health ; 18(1): 455, 2018 04 05.
Artigo em Inglês | MEDLINE | ID: mdl-29621989

RESUMO

BACKGROUND: We examined whether neighborhood-, friend-, and family- norms and social support for consumption and purchase of fruits and vegetables (F&V) were associated with F&V intake among low-income residents in subsidized housing communities. We examined baseline data from a study ancillary to the Live Well/Viva Bien intervention. Participants included 290 residents in four low-income subsidized housing sites who were ≥ 18 years of age, English and/or Spanish speaking, and without medical conditions that prevented consumption of F&V. METHODS: Linear regression models examined associations of norms and social support with F&V intake after adjustments for sociodemographic characteristics. RESULTS: In the analysis, neighborhood social support for F&V was associated with a 0.31 cup increase in F&V intake (95% CI = 0.05, 0.57). The family norm for eating F&V and family social support for eating F&V were associated with a 0.32 cup (95% CI = 0.13, 0.52) and 0.42 cup (95% CI = 0.19, 0.64) increase in F&V intake, respectively. CONCLUSIONS: To our knowledge, no other studies have examined neighborhood, family, and peer norms and social support simultaneously and in relation to F&V intake. These findings may inform neighborhood interventions and community-level policies to reduce neighborhood disparities in F&V consumption.


Assuntos
Dieta/estatística & dados numéricos , Frutas , Características de Residência/estatística & dados numéricos , Normas Sociais , Apoio Social , Verduras , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Áreas de Pobreza , Habitação Popular , Adulto Jovem
13.
Support Care Cancer ; 25(11): 3305-3312, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28497387

RESUMO

PURPOSE: Despite the recommendations for cancer survivors to engage in either moderate or vigorous physical activity, light-intensity physical activity may also have beneficial effects on mental health. The purpose of this study was to examine the associations between light, moderate, and vigorous physical activity and depressive symptoms in breast cancer survivors over 1 year post-treatment. METHODS: Participants (N = 201) were a sample of breast cancer survivors who self-reported depressive symptoms and wore an accelerometer for seven consecutive days to measure physical activity, on five occasions every 3 months post-treatment for cancer. RESULTS: Based on the results of hierarchical linear modeling, relative to others (i.e., between-person effects) and to oneself (i.e., within-person effects), higher levels of light- and moderate-intensity physical activity, but not vigorous-intensity physical activity, were associated with lower scores of depressive symptoms. CONCLUSIONS: In the first year post-treatment, increases in light- and moderate-intensity physical activity, but not vigorous-intensity physical activity, were associated with lower scores of depressive symptoms in relation to other study participants (i.e., between-person effects) and when participants were compared to their own typical levels of physical activity (i.e., within-person effects). The findings may have implications for physical activity recommendations following treatment for breast cancer as light-intensity physical activity may play a role in mitigating depressive symptoms over the first year.


Assuntos
Neoplasias da Mama/psicologia , Sobreviventes de Câncer/psicologia , Depressão/psicologia , Exercício Físico/psicologia , Adulto , Idoso , Neoplasias da Mama/terapia , Depressão/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
14.
COPD ; 14(3): 267-275, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28368706

RESUMO

Smokers with minor spirometric abnormalities can experience persistent activity-related dyspnea and exercise intolerance. Additional resting tests can expose heterogeneous physiological abnormalities, but their relevance and association with clinical outcomes remain uncertain. Subjects included sixty-two smokers (≥20 pack-years), with cough and/or dyspnea and minor airway obstruction [forced expiratory volume in one-second (FEV1) ≥80% predicted and >5th percentile lower limit of normal (LLN) (i.e., z-score >-1.64) using the 2012-Global Lung Function Initiative equations]. They underwent spirometry, plethysmography, oscillometry, single-breath nitrogen washout, and symptom-limited incremental cycle exercise tests. Thirty-two age-matched nonsmoking controls were also studied. Thirty-three (53%) of smokers had chronic obstructive pulmonary disease by LLN criteria. In smokers [n = 62; age 65 ± 11 years; smoking history 43 ± 19 pack-years; post-bronchodilator FEV1 z-score -0.60 ± 0.72 and FEV1/FVC z-score -1.56 ± 0.87 (mean ± SD)] versus controls, peak oxygen uptake (̇VO2) was 21 ± 7 vs. 32 ± 9 ml/kg/min, and dyspnea/̇VO2 slopes were elevated (both p < 0.0001). Smokers had evidence of peripheral airway dysfunction and maldistribution of ventilation when compared to controls. In smokers versus controls: lung diffusing capacity for carbon monoxide (DLCO) was 85 ± 22 vs. 105 ± 17% predicted, and residual volume (RV)/total lung capacity (TLC) was 36 ± 8 vs. 31 ± 6% (both p < 0.01). The strongest correlates of peak ̇VO2 were DLCO% predicted (r = 0.487, p < 0.0005) and RV/TLC% (r = -0.389, p = 0.002). DLCO% predicted was also the strongest correlate of dyspnea/̇VO2 slope (r = -0.352, p = 0.005). In smokers with mild airway obstruction, associations between resting tests of mechanics and pulmonary gas exchange and exercise performance parameters were weak, albeit consistent. Among these, DLCO showed the strongest association with important outcomes such as dyspnea and exercise intolerance measured during standardized incremental exercise tests.


Assuntos
Obstrução das Vias Respiratórias/fisiopatologia , Tolerância ao Exercício/fisiologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Descanso/fisiologia , Fumar/fisiopatologia , Idoso , Obstrução das Vias Respiratórias/complicações , Estudos de Casos e Controles , Tosse/etiologia , Dispneia/etiologia , Dispneia/fisiopatologia , Teste de Esforço , Feminino , Volume Expiratório Forçado , Humanos , Masculino , Pessoa de Meia-Idade , Consumo de Oxigênio , Capacidade de Difusão Pulmonar , Doença Pulmonar Obstrutiva Crônica/complicações , Volume Residual , Fumar/efeitos adversos , Capacidade Vital
15.
J Sci Food Agric ; 97(6): 1868-1875, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27507604

RESUMO

BACKGROUND: Potato is an important vegetable; however, salt stress drastically affects its growth and yield. A pot experiment was therefore conducted to assess salicylic acid efficacy in improving performance of potato cultivars, grown under salt stress (50 mmol L-1 ). Salicylic acid at 0.5 mmol L-1 was sprayed on to potato plants after 1 week of salinity application. RESULTS: Salt stress effects were ameliorated by salicylic acid effectively in both the studied cultivars. N-Y LARA proved more responsive to salicylic acid application than 720-110 NARC, which confirmed genetic variation between cultivars. Salicylic acid scavenged reactive oxygen species by improving antioxidant enzyme activities (superoxide dismutase, catalase, peroxidases) and regulating osmotic adjustment (proline, phenolic contents), which led to enhanced water relation and gaseous exchange attributes, and thereby increased potassium availability and reduced sodium content in potato leaves. Moreover, potato tuber yield showed a positive correlation with potassium content, photosynthesis and antioxidant enzyme activities. CONCLUSION: Salt tolerance efficacy of salicylic acid is authenticated in improving potato crop performance under salt stress. Salicylic acid effect was more pronounced in N-Y LARA, reflecting greater tolerance than 720-110 NARC, which was confirmed as a susceptible cultivar. Hence salicylic acid at 0.5 mmol L-1 and cultivation of N-Y LARA may be recommended in saline soil. © 2016 Society of Chemical Industry.


Assuntos
Antioxidantes/metabolismo , Gases/metabolismo , Ácido Salicílico/farmacologia , Cloreto de Sódio/metabolismo , Solanum tuberosum/efeitos dos fármacos , Solanum tuberosum/metabolismo , Água/metabolismo , Catalase/metabolismo , Osmorregulação , Peroxidases/metabolismo , Proteínas de Plantas/metabolismo , Potássio/metabolismo , Tolerância ao Sal , Solanum tuberosum/crescimento & desenvolvimento , Estresse Fisiológico , Superóxido Dismutase/metabolismo , Água/análise
16.
CMAJ ; 188(5): E80-E90, 2016 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-26696622

RESUMO

BACKGROUND: Previous studies have shown that planned home birth is associated with a decreased likelihood of intrapartum intervention with no difference in neonatal outcomes compared with planned hospital birth. The purpose of our study was to evaluate different birth settings by comparing neonatal mortality, morbidity and rates of birth interventions between planned home and planned hospital births in Ontario, Canada. METHODS: We used a provincial database of all midwifery-booked pregnancies between 2006 and 2009 to compare women who planned home birth at the onset of labour to a matched cohort of women with low-risk pregnancies who had planned hospital births attended by midwives. We conducted subgroup analyses by parity. Our primary outcome was stillbirth, neonatal death (< 28 d) or serious morbidity (Apgar score < 4 at 5 min or resuscitation with positive pressure ventilation and cardiac compressions). RESULTS: We compared 11 493 planned home births and 11 493 planned hospital births. The risk of our primary outcome did not differ significantly by planned place of birth (relative risk [RR] 1.03, 95% confidence interval [CI] 0.68-1.55). These findings held true for both nulliparous (RR 1.04, 95% CI 0.62-1.73) and multiparous women (RR 1.00, 95% CI 0.49-2.05). All intrapartum interventions were lower among planned home births. INTERPRETATION: Compared with planned hospital birth, planned home birth attended by midwives in a jurisdiction where home birth is well-integrated into the health care system was not associated with a difference in serious adverse neonatal outcomes but was associated with fewer intrapartum interventions.


Assuntos
Reanimação Cardiopulmonar/estatística & dados numéricos , Parto Obstétrico , Parto Domiciliar , Hospitais , Tocologia , Morte Perinatal , Natimorto/epidemiologia , Adulto , Índice de Apgar , Estudos de Casos e Controles , Estudos de Coortes , Feminino , Humanos , Recém-Nascido , Intenção , Ontário , Paridade , Gravidez , Estudos Retrospectivos , Adulto Jovem
17.
J Obstet Gynaecol Can ; 38(3): 235-245.e3, 2016 03.
Artigo em Inglês | MEDLINE | ID: mdl-27106193

RESUMO

OBJECTIVE: According to the Early External Cephalic Version (EECV2) Trial, planning external cephalic version (ECV) early in pregnancy results in fewer breech presentations at delivery compared with delayed external cephalic version. A Cochrane review conducted after the EECV2 Trial identified an increase in preterm birth associated with early ECV. We examined whether a policy of routine early ECV (i.e., before 37 weeks' gestation) is more or less costly than a policy of delayed ECV. METHODS: We undertook this analysis from the perspective of a third-party payer (Ministry of Health). We applied data, using resources reported in the EECV2 Trial, to the Canadian context using 10 hospital unit costs and 17 physician service/procedure unit costs. The data were derived from the provincial health insurance plan schedule of medical benefits in three Canadian provinces (Ontario, Alberta, and British Columbia). The difference in mean total costs between study groups was tested for each province separately. RESULTS: We found that planning early ECV results in higher costs than planning delayed ECV. The mean costs of all physician services/procedures and hospital units for planned ECV compared with delayed ECV were $7997.32 versus $7263.04 in Ontario (P < 0.001), $8162.82 versus $7410.55 in Alberta (P < 0.001), and $8178.92 versus $7417.04 in British Columbia (P < 0.001), respectively. CONCLUSION: From the perspective of overall cost, our analyses do not support a policy of routinely planning ECV before 37 weeks' gestation.


Assuntos
Apresentação Pélvica , Parto Obstétrico , Nascimento Prematuro , Versão Fetal/estatística & dados numéricos , Apresentação Pélvica/economia , Apresentação Pélvica/epidemiologia , Apresentação Pélvica/terapia , Canadá/epidemiologia , Análise Custo-Benefício , Parto Obstétrico/economia , Parto Obstétrico/estatística & dados numéricos , Feminino , Humanos , Gravidez , Nascimento Prematuro/economia , Nascimento Prematuro/epidemiologia , Fatores de Tempo
19.
Pak J Pharm Sci ; 29(4): 1209-15, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27393433

RESUMO

Date fruit is a rich and quick source of phytochemicals and sugars (glucose, fructose, sucrose) which playing a vital role to nourish the human beings worldwide. The present study therefore, was conducted to explore the role of strands thinning on phytochemicals and sugars profiling in date palm (Cvs. Hillawi and Khadrawi). The experiment was comprised of different strand thinning treatments viz. @ 20% RCS (removal of central strands), 30% RCS, 20% STT (shortening of terminal tips), 30% STT, 20% RCS + 20% STT and 30% RCS+30% STT) including control. The results obtained from the current study showed that strand thinning significantly improves the level of phytochemicals and sugars in date fruit harvested at rutab stage as compared to un-thinned fruit clusters. Higher level of phytochemicals and sugars were found in fruit clusters thinned @ 30% RCS alone and in combination of 30% RCS+30%STT than other fruit thinning intensities. In conclusion; Strand thinning should be employed as an imperative managerial approach to improve the nutritional and phytochemical value of date palm fruit and to fulfill the quick energy requirement of the human body.


Assuntos
Carboidratos/análise , Phoeniceae/química , Frutas/química , Compostos Fitoquímicos/análise
20.
J Obstet Gynaecol Can ; 37(8): 728-735, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26474230

RESUMO

OBJECTIVE: Adverse events occur in up to 10% of obstetric cases, and up to one half of these could be prevented. Case reviews and root cause analysis using a structured tool may help health care providers to learn from adverse events and to identify trends and recurring systems issues. We sought to establish the reliability of a root cause analysis computer application called Standardized Clinical Outcome Review (SCOR). METHODS: We designed a mixed methods study to evaluate the effectiveness of the tool. We conducted qualitative content analysis of five charts reviewed by both the traditional obstetric quality assurance methods and the SCOR tool. We also determined inter-rater reliability by having four health care providers review the same five cases using the SCOR tool. RESULTS: The comparative qualitative review revealed that the traditional quality assurance case review process used inconsistent language and made serious, personalized recommendations for those involved in the case. In contrast, the SCOR review provided a consistent format for recommendations, a list of action points, and highlighted systems issues. The mean percentage agreement between the four reviewers for the five cases was 75%. The different health care providers completed data entry and assessment of the case in a similar way. Missing data from the chart and poor wording of questions were identified as issues affecting percentage agreement. CONCLUSION: The SCOR tool provides a standardized, objective, obstetric-specific tool for root cause analysis that may improve identification of risk factors and dissemination of action plans to prevent future events.


Objectif : Des événements indésirables se manifestent dans jusqu'à 10 % des cas obstétricaux et jusqu'à la moitié de ces événements sont évitables. Les analyses de cas et l'analyse des causes fondamentales au moyen d'un outil structuré pourraient aider les fournisseurs de soins à tirer des leçons des événements indésirables et à identifier les tendances et les problèmes systémiques récurrents. Nous avons cherché à établir la fiabilité d'un logiciel d'analyse des causes fondamentales connu sous le nom de Standardized Clinical Outcome Review (SCOR). Méthodes : Nous avons conçu une étude faisant appel à des méthodes mixtes pour évaluer l'efficacité de l'outil. Nous avons mené une analyse qualitative du contenu de cinq dossiers ayant été analysés tant au moyen des méthodes traditionnelles d'assurance de la qualité en obstétrique qu'au moyen de l'outil SCOR. Nous avons également déterminé la fidélité interévaluateurs en demandant à quatre fournisseurs de soins d'analyser les cinq mêmes dossiers au moyen de l'outil SCOR. Résultats : L'analyse qualitative comparative a révélé que le processus traditionnel d'assurance de la qualité dans le cadre de l'analyse des cas utilisait un langage hétérogène et formulait de sérieuses recommandations personnalisées à l'endroit des intervenants du dossier. En revanche, l'analyse au moyen de l'outil SCOR fournissait un format uniforme pour les recommandations et une liste de points de décision, en plus de faire ressortir les problèmes systémiques. Le taux moyen d'entente (en pourcentage) entre les quatre évaluateurs pour les cinq dossiers en question était de 75 %. Les autres fournisseurs de soins ont procédé à la saisie des données et à l'évaluation des dossiers de façon semblable. L'absence de certaines données dans les dossiers et la mauvaise formulation des questions ont été identifiées comme étant des problèmes affectant le taux d'entente. Conclusion : L'outil SCOR permet la tenue d'une analyse des causes fondamentales de façon standardisée, objective et centrée sur l'obstétrique, ce qui pourrait améliorer l'identification des facteurs de risque et la dissémination des plans d'action pour la prévention de futurs événements.


Assuntos
Tomada de Decisões Assistida por Computador , Complicações do Trabalho de Parto , Avaliação de Processos e Resultados em Cuidados de Saúde/métodos , Complicações na Gravidez , Análise de Causa Fundamental , Feminino , Humanos , Gravidez , Gestão de Riscos/métodos
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