Comparison of the Proseal, Supreme, and I-Gel SAD in Gynecological Laparoscopic Surgeries

We compared proseal, supreme, and i-gel supraglottic airway devices in terms of oropharyngeal leak pressures and airway morbidities in gynecological laparoscopic surgeries. One hundred and five patients undergoing elective surgery were subjected to general anesthesia after which they were randomly distributed into three groups. Although the oropharyngeal leak pressure was lower in the i-gel group initially (mean ± standard deviation; 23.9 ± 2.4, 24.9 ± 2.9, and 20.9 ± 3.5, resp.), it was higher than the proseal group and supreme group at 30 min of surgery after the trendelenburg position (25.0 ± 2.3, 25.0 ± 1.9, and 28.3 ± 2.3, resp.) and at the 60 min of surgery (24.2 ± 2.1, 24.8 ± 2.2, and 29.5 ± 1.1, resp.). The time to apply the supraglottic airway devices was shorter in the i-gel group (12.2 (1.2), 12.9 (1.0), and 6.7 (1.2), resp., P=0.001). There was no difference between the groups in terms of their fiber optic imaging levels. pH was measured at the anterior and posterior surfaces of the pharyngeal region after the supraglottic airway devices were removed; the lowest pH values were 5 in all groups. We concluded that initial oropharyngeal leak pressures obtained by i-gel were lower than proseal and supreme, but increased oropharyngeal leak pressures over time, ease of placement, and lower airway morbidity are favorable for i-gel

Clinical Study Comparison of the Proseal, Supreme, and I-Gel SAD in Gynecological Laparoscopic Surgeries

We compared proseal, supreme, and i-gel supraglottic airway devices in terms of oropharyngeal leak pressures and airway morbidities in gynecological laparoscopic surgeries. One hundred and five patients undergoing elective surgery were subjected to general anesthesia after which they were randomly distributed into three groups. Although the oropharyngeal leak pressure was lower in the i-gel group initially (mean ± standard deviation; 23.9 ± 2.4, 24.9 ± 2.9, and 20.9 ± 3.5, resp.), it was higher than the proseal group and supreme group at 30 min of surgery after the trendelenburg position (25.0 ± 2.3, 25.0 ± 1.9, and 28.3 ± 2.3, resp.) and at the 60 min of surgery (24.2 ± 2.1, 24.8 ± 2.2, and 29.5 ± 1.1, resp.). The time to apply the supraglottic airway devices was shorter in the i-gel group (12.2 (1.2), 12.9 (1.0), and 6.7 (1.2), resp., = 0.001). There was no difference between the groups in terms of their fiber optic imaging levels. pH was measured at the anterior and posterior surfaces of the pharyngeal region after the supraglottic airway devices were removed; the lowest pH values were 5 in all groups. We concluded that initial oropharyngeal leak pressures obtained by i-gel were lower than proseal and supreme, but increased oropharyngeal leak pressures over time, ease of placement, and lower airway morbidity are favorable for i-gel

The bottleneck of intrapreneurship: are social positions and held expectations constraints in organizations' entrepreneur process? A conceptual view

Purpose This study aims to develop conceptual arguments about intrapreneurship relative to role theory. Design/methodology/approach The challenge to the intrapreneurship concept is that no single or combination of personality traits, individual characteristics or attitudes can fulfill the causes of the phenomenon, as these factors are context-bound. One explanation for individual- and macro-level contrasting outcomes is the diverging effect of expectations. The structural and interactionist perspective of sociology is used to understand the intrapreneurship concept because intrapreneurs live within a society and shape their course per the expectations of others. Findings Intrapreneurs have been trying to infer about what is seen as crucial individually related to interactions within the existing context; more importantly, acting in an intrapreneurship role can be defined and learned by expectations. Practical implications With the convenient expectations from other members, families or environments, organization members will value the innovation and self-direction of intrapreneurship more highly that such a taste for an acting role may be an important factor in the decision to become an intrapreneur. Originality/value To the best of the authors' knowledge, the paper emphasized for the first time that the consequences of exposure to social expectations for the development of intrapreneur roles, particularly the broad portfolios of skills and motivation, are relevant to intrapreneurship. Previous approaches depend on individuals, organizations or the environment to have different approaches to likely employees to be intrapreneurs. The paper first argues that context is important for understanding how and why context can be linked to individual intrapreneurs and how intrapreneurship can be defined as roles rather than a task or unique potential entrepreneurs

Ab Initio Molecular Dynamics Simulation of Pressure-Induced Phase Transition in MgS

WOS: 000405703100007Pressure-induced phase transition in MgS is studied using a constant pressure ab initio molecular dynamics method, and a solid evidence of existence of its high-pressure phase is provided. As predicted by total energy calculations, MgS undergoes a structural phase transformation from the rocksalt structure to a CsCl-type structure under hydrostatic pressure. The transformation mechanism is characterized, and two intermediate phases having P4/nmm and P2(1)/m symmetries for the rocksalt-to-CsCl-type phase transformation of MgS are proposed, which is different from the previously proposed mechanisms. We also study this phase transition using the total energy calculations. Our predicted transition parameters and bulk properties are in good agreement with the earlier first principle simulations

Intrapreneurship and expectations restrictions

Este artigo desenvolve argumentos sobre os fatores que promovem o intraempreendedorismo em relação à teoria de papéis. Estes são baseados em contribuições da sociologia estrutural e interacional. Ferramentas teóricas fixas para o intraempreendedorismo não são suficientes. Portanto, a perspectiva estrutural e interacionista da sociologia é necessária para entender o conceito de intraempreendedorismo. As abordagens acima dependem de indivíduos, organizações ou ambientes para incentivar os funcionários em potencial a serem intraempreendedores. Assim, as expectativas podem ser uma pedra angular do intraempreendedorismo, porque os intraempreendedores aprendem com seus papéis.This article develops arguments about the factors that promote intrapreneurship in relation to role theory. These are based on contributions from interactional and structural sociology. Fixed theoretical tools for intrapreneurship are not enough. So, the structural and interactionist perspective of sociology is necessary to understand the concept of intrapreneurship. The above approaches depend on individuals, organizations or environments to encourage potential employees to be intrapreneurs. Thus, Expectations can be a cornerstone for intrapreneurship because intrapreneurs learn from their roles.Este artículo desarrolla argumentos sobre los factores que promueven el intraemprendimiento en relación con la teoría de roles. Estos se basan en contribuciones de la sociología interaccional y estructural. Las herramientas teóricas fijas para el intraemprendimiento no son suficientes. Entonces, la perspectiva estructural e interaccionista de la sociología es necesaria para comprender el concepto de intraemprendimiento. Los enfoques anteriores dependen de individuos, organizaciones o entornos para impulsar a los empleados potenciales a ser intraemprendedores. Así, Las expectativas pueden ser una piedra angular para el intraemprendimiento porque los intraemprendedores aprenden de sus roles

Intrapreneurial behaviors of organizational members. A conceptual view: how contextual expectations can explain the entrepreneurship roles in organizations?

Purpose This study aims to develop theoretical arguments about the factors promoting nascent intrapreneurship relative to role theory. These arguments principally draw on contributions from interactional and structural sociology. Fixed theoretical tools for intrapreneurship are not quite enough. So, structural and interactionist perspective of sociology is necessary to understand the intrapreneurship concept because intrapreneurs live in a society and shape their course per the expectations of others. Previous approaches depend on individual, organizations or environment to push potential employees to be intrapreneurs. Expectations may be a keystone for intrapreneurship because intrapreneurs have been trying to explain or make progress about what is seen as crucial; more importantly, they learn their roles. Design/methodology/approach This is a conceptual paper about explaining intrapreneurship. Foregoing literature has been trying to explain the phenomenon by individual, organizational or environment endeavors to transform employees to be intrapreneurs. Role theory stems from interactional and structural sociology. Promoting the internal entrepreneur process by overcoming resistance to switching to a more structured management approach and adopting management systems and processes in a timely way is still a vague approach. So, the structural and interactionist perspective of sociology is necessary to understand the concept because intrapreneurship is a contextual factor rather than activity. Findings Expectations can convey what others consider particularly important or necessary. Intrapreneurship is a type of personal entrepreneur role influenced by expectations. Practical implications Intrapreneurship is not solely entrepreneurship in organizations but is also governed by the specific combinations of circumstances generally outside of the organizational environment, such as families, coworkers and friends. Originality/value The present paper seeks to answer three primary research questions: how differentiation among subunits changes intrapreneurship role expectations, how the intrapreneurs' role has been affected from unlike expectations and are group or team-level expectations on intrapreneurs' roles distinctive than organization and individual levels

Performance of Size 1 I-Gel Compared with Size 1 ProSeal Laryngeal Mask in Anesthetized Infants and Neonates

Purpose. The size 1 I-gel, recommended for small infants and neonates weighing 2–5 kg, has recently been released. There are no prospective studies available that assess the insertion conditions, sealing pressures, or ventilation quality of it. This study was designed to compare the performance of recently released size 1 I-gel with size 1 ProSeal LMA. Methods. Fifty infants and neonates, ASA I-II were included in this prospective, randomized, and controlled study. Patients were divided into two groups for placing I-gel or ProSeal LMA. The primary outcome was airway leak pressure, and secondary outcomes included insertion time, insertion success and conditions, initial airway quality, fiberoptic view of the larynx, and complications. Results. There were no significant differences in terms of airway leak pressure between the I-gel (27.44±5.67) and ProSeal LMA (23.52±8.15) (P=0.054). The insertion time for the I-gel was shorter (12.6±2.19 s) than for the ProSeal LMA (24.2±6.059 s) (P=0.0001). Insertion success and conditions were similar in groups. We encountered few complications. Conclusion. Our study demonstrates that the size 1 I-gel provided an effective and satisfactory airway as the size 1 ProSeal LMA. It may be a good alternative supraglottic airway device for use in small infants and neonates. This trial is registered with: ClinicalTrials.gov NCT01704118

Efeitos antimicrobianos de cetamina em combinação com propofol: um estudo in vitro

EXPERIÊNCIA E OBJETIVOS: Cetamina e propofol são os anestésicos gerais que também exibem efeitos antimicrobianos e promotores do crescimento microbiano, respectivamente. Embora esses agentes sejam frequentemente aplicados em combinação durante o uso clínico, não há dados sobre seu efeito total no crescimento microbiano na administração combinada. Nesse estudo, investigamos o crescimento de alguns microrganismos em uma mistura de cetamina e propofol. MÉTODO: Nesse estudo, utilizamos cepas padronizadas: Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa e Candida albicans. Realizamos uma análise de tempo-crescimento para avaliar as taxas de crescimento microbiano em propofol 1%. A atividade antimicrobiana de cetamina, isoladamente e em propofol, foi estudada pelo método de microdiluição. RESULTADOS: Em propofol, as cepas estudadas cresceram de concentrações de 10³-10(4) ufc/mL para > 10(5) ufc/mL, dentro de 8-16 horas, dependendo do tipo de microrganismo. Foram determinadas a concentração inibitória mínima (CIM) e a concentração bactericida mínima (CBM) (para Candida, concentração fungicida mínima) de cetamina, como se segue (CIM, CBM): E. coli 312,5, 312,5 µg/mL; S.aureus 19,5, 156 µg/mL; P. aeruginosa 312,5, 625 µg/mL; e C. albicans 156, 156 µg/mL. Na mistura cetamina + propofol, cetamina exibiu atividade antimicrobiana para E. coli, P. aeruginosa e C. albicans em CBMs a 1250, 625 e 625 µg/mL, respectivamente. O crescimento de S. aureus não foi inibido nessa mistura (concentração de cetamina = 1250 µg/mL). CONCLUSÃO: Cetamina preservou sua atividade antimicrobiana de maneira dose-dependente contra alguns microrganismos em propofol, que é robusta solução promotora de crescimento microbiano. O uso combinado de cetamina e propofol na aplicação clínica de rotina pode diminuir o risco de infecção causada por contaminação acidental. Entretanto, deve-se ter em mente que cetamina não pode reduzir todas as ameaças patogênicas na mistura com propofol