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1.
Clin Anat ; 37(6): 635-639, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38308470

RESUMO

Although Josias Weitbrecht described the retinacula of the hip joint in his 1742 Syndesmologia, the anatomist Cesare Amantini of Perugia specifically studied the medial retinacula he referred to as the pectineofoveal fold in a late 19th-century monograph. This particular synovial fold stretches from the lesser trochanter to the osteocartilaginous junction of the femoral head along a virtual line connecting the lesser trochanter and the fovea for the ligament of the head. Although mentioned by some anatomists and radiologists, and despite its possible involvement in specific hip joint pathologies (fractures, impingements), it is surprising that Amantini's pectineofoveal fold remains ignored by most anatomy and clinical anatomy books. This study aims to verify if Cesare Amantini effectively drew attention to this synovial fold for the first time and coined the term "pectineofoveal fold," as well as determine whether most classical textbooks (i.e., published from 1890 to 2017) acknowledge the discovery and include it in the description of the hip joint. A possible evolutionary link between this synovial fold and the ambiens and pectineus muscles exists and should be discussed.


Assuntos
Articulação do Quadril , Humanos , Articulação do Quadril/anatomia & histologia , História do Século XIX , História do Século XVIII , Anatomia/história , História do Século XX
2.
Appetite ; 185: 106509, 2023 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-36871602

RESUMO

The presence of a physical or mental health issue, such as an eating disorder (ED), impacts daily activities, also known as occupations. For example, an overinvestment in body shape and weight undoubtedly can lead to an underinvestment in other, more meaningful occupations. To address ED-related perceptual disturbances, a detailed log of daily time use can pinpoint food-related occupational imbalances. This study aims to characterize the daily occupations associated with EDs. The first specific objective (SO.1) is to categorize and quantify the temporal organization of a typical day's occupations as self-reported by individuals with an ED. The second specific objective (SO.2) is to compare daily occupational time use among people with different ED types. This retrospective study based on time-use research principles was conducted by analyzing data from an anonymized secondary dataset (Loricorps's Databank). Data were collected between 2016 and 2020, from 106 participants, with descriptive analysis completed to determine the average daily time use for each occupation. A series of one-way analyses of variance (ANOVAs) were performed to compare perceived time use in each occupation for participants with different types of EDs. The outcomes show a marked underinvestment in leisure categories compared to the general population. In addition, personal care and productivity can represent the blind dysfunctional occupations (SO.1). Moreover, compared to those with binge eating disorder (BED), individuals with anorexia nervosa (AN) are significantly more invested in occupations that focus explicitly on perceptual disturbances, such as personal care (SO.2). The highlight of this study is the distinction between marked versus blind dysfunctional occupation, which offers specific avenues for clinical intervention.


Assuntos
Anorexia Nervosa , Transtorno da Compulsão Alimentar , Bulimia Nervosa , Transtornos da Alimentação e da Ingestão de Alimentos , Humanos , Estudos Retrospectivos , Transtorno da Compulsão Alimentar/psicologia , Anorexia Nervosa/psicologia , Alimentos , Bulimia Nervosa/psicologia
3.
Anaesthesist ; 69(11): 793-802, 2020 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-32808047

RESUMO

BACKGROUND: Critical incident reporting systems (CIRS) serve to sensitize organizations and individuals to unknown events relevant to patient safety and therefore help in developing safer systems; however, the use and impact of these systems in healthcare has recently been questioned for a variety of reasons, among them unclear and imprecise reporting criteria. Some authors claim that fundamental aspects of successful CIRS have been misunderstood, misapplied or entirely missed during the adaptation to the healthcare context. The aim of this study was the analysis of all reports accumulated over 10 years in the German system CIRSmedical Anesthesiology (CIRS-AINS) as a basis for improved reporting guidelines, user training and generation of further hypotheses. METHODS: In a retrospective analysis all reports from CIRS-AINS entered between April 2010 and June 2019 were analyzed for structure and content. RESULTS: A total of 6013 reports were filed consisting of 3492 incidents (58.1%), 1734 near misses (28.8%) and 787 others (13.1%). Those other reports contained 21 interpersonal conflicts (0.4%), 102 general complaints (1.7%), 89 stress or workload complaints (1.5%) and 575 reports that did not contain any critical incident or safety-related content (9.6%). Since 2015 these other reports have increased 2.8-fold from 7.4% to 20.8%. Of the reports 20.1% contained information about technical problems and 27.7% about certified medical devices. Medication was mentioned in 10.7% of reports, 47.8% of inpatient incidents concerned the perioperative setting, 24.6% were reported from intensive care units (ICU) and postanesthesia care units (PACU). Of the cases 198 (3.3%) explicitly mentioned communication issues, 346 cases (5.8%) concerned incomplete or inadequate documentation involving orders, blood products or laboratory tests. Of the reports 36.1% were analyzed and commented on by the CIRS team of the German Society of Anesthesiologists (BDA). CONCLUSION: The analysis provides insights into reporting practices and can influence both reporting guidelines as well as user training. Report format, content and context are of utmost importance for further analysis: A distinction has to be made between reports that contain locally rational information and cannot be understood without further context and reports that may help inform about patient safety activities on a national level. Especially in light of the limited resources for incident analysis, the content should be critically reflected upon by the user when submitting a report to support a wise allocation of available capacities. In this respect, the increase of non-CIRS reports has to be considered in the future implementation of nationwide IRS. Also, it has to be questioned whether adequate alternative means of communication for these non-CIRS reports exist. The majority of reports were made by physicians, which is in contrast to international experiences with increased engagement of nursing staff and underlines the need for increased interprofessional collaboration with incident reporting and analysis activities in Germany. Reports containing workload complaints, while constituting important signals on a local level, usually fail to address the idea of learning from others inherent to the philosophy of national IRS.


Assuntos
Médicos , Gestão de Riscos , Atenção à Saúde , Humanos , Segurança do Paciente , Estudos Retrospectivos
4.
Anaesthesist ; 66(2): 137-150, 2017 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-28184954

RESUMO

The world of medicine is becoming from year to year more complex. This necessitates efficient learning processes, which incorporate the principles of adult education but with unchanged periods of further education. The subject matter must be processed, organized, visualized, networked and comprehended. The learning process should be voluntary and self-driven with the aim of learning the profession and becoming an expert in a specialist field. Learning is an individual process. Despite this, the constantly cited learning styles are nowadays more controversial. An important factor is a healthy mixture of blended learning methods, which also use new technical possibilities. These include a multitude of e­learning options and simulations, which partly enable situative learning in a "shielded" environment. An exemplary role model of the teacher and feedback for the person in training also remain core and sustainable aspects in medical further education.


Assuntos
Educação Médica Continuada , Aprendizagem , Simulação por Computador , Instrução por Computador , Currículo , Educação Médica , Educação de Graduação em Medicina , Humanos , Internet , Ensino
5.
Anaesthesist ; 66(12): 910-923, 2017 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-28971216

RESUMO

BACKGROUND: Simulation-based training with a focus on non-technical skills can have a positive influence on safety relevant attitudes of participants. If an organization succeeds in training sufficient staff, it may experience a positive change in the safety climate. As the effects of a single training are of a transient nature, annual training sessions may lead to an incremental improvement of safety relevant attitudes of employees over time. In spring 2012 the Department of Anesthesia at the University Hospital of Erlangen established an annual simulation-based training for staff members (e.g. consultants, trainee anesthetists and nurse anesthetists). OBJECTIVE: The study aimed to test whether an annual simulation-based training would result in an incremental longitudinal improvement in attitudes towards teamwork, safety and stress recognition. METHODS: A survey comprising three domains (teamwork climate, safety climate and stress recognition) of the safety attitudes questionnaire (SAQ) and items addressing briefing and speaking up was distributed to all participants in an annual in-house simulation training. Participants filled out the questionnaire in the morning of each training day. The attitudes were measured before the first training series in 2012, 6 months after the first training and then every year (2013-2016). Participants generated a personalized identification code which allowed individuals to be anonymously tracked over time. Results of the 5­point Likert scale were transformed to a 100-point scale. Results were calculated at the group level and at the individual level. Univariable linear regression was used to calculate mean changes per year. RESULTS: Over a period of 5 years (2012-2016) a total of 255 individuals completed the questionnaire. Each year, 14-20% of all nurse anesthetists and 81-90% of all anesthetists participated in the simulation-based training. As a result of annual staff turnover 16-24% of participants were new staff members. A personalized code allowed the before and after comparison of 99 staff members who had participated twice or more. Physicians had a higher mean score for teamwork climate before the first training (+8.7 p < 0.001). Mean teamwork climate and safety climate scores before the first training increased over a period of 5 years (3.11 for teamwork climate, p < 0.001 and 2.73 for safety climate, p < 0.001). Repeat participation led to a bigger mean change of individual attitudes in nurse anesthetists: teamwork climate 5.2 (nurses) vs. 1.4 (physicians) and safety climate 5.3 (nurses) vs. 2.8 (physicians) without reaching significance. Participants acknowledged the importance of briefings but confirmed their existence in less than half of the cases. The frequency of briefings increased over the 5­year period. There were no changes in attitude towards speaking up. CONCLUSION: Over a 5-year period, small positive changes in attitudes towards teamwork and safety occurred. Low participation of nurse anesthetists as well as personnel turnover may have weakened the impact of simulation-based training on the safety climate.


Assuntos
Atitude do Pessoal de Saúde , Hospitais Universitários/organização & administração , Segurança do Paciente , Treinamento por Simulação/organização & administração , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cultura Organizacional , Equipe de Assistência ao Paciente , Estudos Prospectivos , Melhoria de Qualidade , Treinamento por Simulação/economia , Inquéritos e Questionários
6.
Anaesthesist ; 65(9): 681-9, 2016 Sep.
Artigo em Alemão | MEDLINE | ID: mdl-27565996

RESUMO

BACKGROUND: Unanticipated airway problems in infants can rapidly develop into severe hypoxemia. Team members can provide support and suggest steps of action if a shared mental model of the next steps exists. Briefing prior to induction of anaesthesia may create such a shared mental model among all team members. OBJECTIVES: The aim of the study was to assess whether a short briefing on the recommendations for an unexpected difficult airway, developed by the Working Group on Paediatric Anaesthesia of the German Society for Anaesthesiology and Intensive Care Medicine, would influence the management of an unexpected difficult mask ventilation in an infant. The study also aims to assess whether a shared mental model would encourage the anaesthesia nurse to speak up and foster implicit coordination. METHODS: Nineteen teams consisting of an anaesthesia resident and an anaesthesia nurse participated in a scenario of an urgent induction of anaesthesia in an infant. Teams were randomized to either conduct a briefing on the recommendations for an unexpected difficult airway prior to induction of anaesthesia or to have access to a Web-based cognitive aid with an emergency manual page containing the identical algorithm if needed. Induction of anaesthesia triggered upper airway obstruction and desaturation. The time course of desaturation followed published physiologic modelling. The time until the obstruction was relieved was recorded. Video recordings of the scenarios were analysed with respect to coordination patterns prior to induction as well as to coordination forms (implicit vs. explicit) during the emergency. At the end of the course, participants were asked to fill out a questionnaire. RESULTS: Teams of both groups checked on the availability of airway equipment, but teams in the briefing group talked more often about treatment steps to relieve airway obstruction (p < 0.005). The time until the obstruction was relieved was significantly shorter in the briefing group (median: 80 s vs. 126 s; p < 0.005). In 45 % of the intervention scenarios the nurse suggested the solution to the airway problem whereas only 10 % of the nurses in the control group proposed a measure to relieve the obstruction (n.s.). Both groups showed no difference in the frequency of implicit vs. explicit coordination patterns. Nurses from the intervention group found the situation to be less an emergency and felt better prepared than nurses from the control group (p < 0.05). CONCLUSION: Briefings prior to anaesthesia induction in paediatric anaesthesia should include management of unanticipated problems. In a simulation setting, a briefing on treatment steps for an unexpected difficult airway improves management of an upper airway obstruction. Explicit communication of intended actions by the anaesthesiologist may foster speaking up by team members.


Assuntos
Manuseio das Vias Aéreas/métodos , Sistemas de Apoio a Decisões Clínicas , Internet , Máscaras Laríngeas , Obstrução das Vias Respiratórias/terapia , Algoritmos , Anestesiologistas , Anestesiologia/educação , Criança , Pré-Escolar , Simulação por Computador , Serviços Médicos de Emergência , Feminino , Humanos , Lactente , Recém-Nascido , Intubação Intratraqueal , Masculino , Modelos Teóricos , Enfermeiras e Enfermeiros , Equipe de Assistência ao Paciente
7.
Br J Anaesth ; 112(3): 546-55, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24318857

RESUMO

BACKGROUND: Critical incident reporting is a key tool in the promotion of patient safety in anaesthesia. METHODS: We surveyed representatives of national incident reporting systems in six European countries, inviting information on scope and organization, and intelligence on factors determining success and failure. RESULTS: Some systems are government-run and nationally conceived; others started out as small, specialty-focused initiatives, which have since acquired a national reach. However, both national co-ordination and specialty enthusiasts seem to be necessary for an optimally functioning system. The role of reporting culture, definitional issues, and dissemination is discussed. CONCLUSIONS: We make recommendations for others intending to start new systems and speculate on the prospects for sharing patient safety lessons relevant to anaesthesia at European level.


Assuntos
Anestesia/métodos , Anestesiologia/métodos , Análise e Desempenho de Tarefas , Anestesia/história , Anestesiologia/história , Anestesiologia/normas , Dinamarca , Europa (Continente) , Finlândia , Alemanha , Pesquisas sobre Atenção à Saúde , História do Século XX , História do Século XXI , Humanos , Disseminação de Informação , Segurança do Paciente , Espanha , Inquéritos e Questionários , Suíça , Reino Unido
8.
Laryngorhinootologie ; 92 Suppl 1: S23-32, 2013 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-23625714

RESUMO

Safety culture is positioned at the heart of an organisation's vulnerability to error because of its role in framing organizational awareness to risk and in providing and sustaining effective strategies of risk management. Safety related attitudes of leadership and management play a crucial role in the development of a mature safety culture ("top-down process"). A type marker for organizational culture and thus a predictor for an organizations maturity in respect to safety is information flow and in particular an organization's general way of coping with information that suggests anomaly. As all values and beliefs, relationships, learning, and other aspects of organizational safety culture are about sharing and processing information, safety culture has been termed "informed culture". An informed culture is free of blame and open for information provided by incidents. "Incident reporting systems" are the backbone of a reporting culture, where good information flow is likely to support and encourage other kinds of cooperative behavior, such as problem solving, innovation, and inter-departmental bridging. Another facet of an informed culture is the free flow of information during perioperative patient care. The World Health Organisation's "safe surgery checklist" is the most prevalent example of a standardized information exchange aimed at preventing patient harm due to information deficit. In routine tasks mandatory standard operating procedures have gained widespread acceptance in guaranteeing the highest possible process quality.Technical and non-technical skills of healthcare professionals are the decisive human resource for an efficient and safe delivery of patient care and the avoidance of errors. The systematic enhancement of staff qualification by providing training opportunities can be a major investment in patient safety. In recent years several otorhinolaryngology departments have started to incorporate simulation based team trainings into their curriculum.


Assuntos
Cultura Organizacional , Otolaringologia/organização & administração , Gestão de Riscos/organização & administração , Gestão da Segurança/organização & administração , Lista de Checagem , Competência Clínica , Comportamento Cooperativo , Currículo , Alemanha , Humanos , Disseminação de Informação , Capacitação em Serviço , Comunicação Interdisciplinar , Otolaringologia/educação , Procedimentos Cirúrgicos Otorrinolaringológicos/educação , Equipe de Assistência ao Paciente/organização & administração , Assistência Perioperatória/educação
9.
Anaesthesist ; 61(10): 857-66, 2012 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-23011044

RESUMO

BACKGROUND: Due to the negative impact on decision-making too steep authority gradients in teams represent a risk factor for patient safety. As residents and nursing staff may fear sanctions they may be reluctant to forward critical information to or challenge planned actions of attending physicians. In the setting of a simulation course it was investigated whether and to what extent team members would challenge decisions of familiar attending physicians. In each case where participants did not voice an opinion the underlying motives for the behavior were investigated. METHODS: A total of 59 physicians and 18 nursing staff participated in the scenario. During a rapid sequence induction they were confronted with 7 critical situations created by the attending physician who had been instructed by the simulation team. Recommendations of the German Society of Anaesthesiology were ignored as well as clinical standard operating procedures (SOPs) and two potentially fatal drug administrations were ordered. An attempt was made to determine whether team members were aware of the safety threat at all and if so how they would solve the resulting conflicts. The level of verbal challenge was scored. During debriefing participants were asked to verbalize the motives which they thought might account for their silence or level of challenge. RESULTS: In situations where non-verbal conflict resolution was possible 65% of the participants pursued that strategy whereas 35% voiced an opinion. Situations necessitating verbal intervention were identified in 66% but 72% of the participants chose to remain silent. Team members decided to challenge the attending physician in only 28% of the situations. In 35% their statement was oblique, in 25% the problem was addressed but not further pursued and only in 40% did participants show crisp advocacy and assertiveness and initiated discussion. Asked why they had refrained from challenging the attending physician 37% had no answer, in 35% of situations participants observed a discrepancy between their own knowledge and the intended course of action yet they decided not to address the problem, 12% explained their behavior with the perceived authority of the attending physician and 8% stated that in their opinion attending physicians violated SOPs on a daily basis. None of the participants had the feeling that the simulation setting had provoked a response different to what they might have done in everyday life. CONCLUSIONS: The authority gradient can have a major negative impact on perioperative patient care. Residents and nursing staff are seldom able to challenge the attending physicians when patient safety is at risk. However, even attending physicians who normally accept feedback and criticism from team members can fail to receive support.


Assuntos
Enfermeiras e Enfermeiros/psicologia , Segurança do Paciente , Assistência Perioperatória/psicologia , Médicos/psicologia , Adulto , Anestesia , Assertividade , Comunicação , Conflito Psicológico , Intervenção em Crise , Tomada de Decisões , Feminino , Guias como Assunto , Humanos , Internato e Residência , Masculino , Pessoa de Meia-Idade , Defesa do Paciente , Equipe de Assistência ao Paciente/organização & administração , Simulação de Paciente
11.
J Clin Endocrinol Metab ; 87(4): 1856-63, 2002 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11932330

RESUMO

Organic anion-transporting polypeptides (OATPs) are a family of multispecific carriers that mediate the sodium-independent transport of steroid hormone and conjugates, drugs, and numerous anionic endogenous substrates. We investigated whether members of the OATP gene family could mediate fetal-maternal transfer of anionic steroid conjugates in the human placenta. OATP-B (gene symbol SLC21A9) was isolated from a placenta cDNA library. An antiserum to OATP-B detected an 85-kDa protein in basal but not apical syncytiotrophoblast membranes. Immunohistochemistry of first-, second-, and third-trimester placenta showed staining in the cytotrophoblast membranes and at the basal surface of the syncytiotrophoblast. Trophoblasts that reacted with an antibody to Ki-67, a proliferation-associated antigen, expressed lower levels of OATP-B. OATP-B mRNA levels were measured in isolated trophoblasts under culture conditions that promoted syncytia formation. Real-time quantitative PCR estimated an 8-fold increase in OATP-B expression on differentiation to syncytia. The uptake of [(3)H]estrone-3-sulfate, a substrate for OATP-B, was measured in basal syncytiotrophoblast membrane vesicles. Transport was saturable and partially inhibited by pregnenolone sulfate, a progesterone precursor. Pregnenolone sulfate also partially inhibited OATP-B-mediated transport of estrone-3-sulfate in an oocyte expression system. These findings suggest a physiological role for OATP-B in the placental uptake of fetal-derived sulfated steroids.


Assuntos
Estrona/análogos & derivados , Transportadores de Ânions Orgânicos/metabolismo , Placenta/metabolismo , Transporte Biológico/efeitos dos fármacos , Transporte Biológico/fisiologia , Células Cultivadas , Estrona/antagonistas & inibidores , Estrona/farmacocinética , Feminino , Células Gigantes/fisiologia , Humanos , Oócitos/metabolismo , Transportadores de Ânions Orgânicos/genética , Transportadores de Ânions Orgânicos/fisiologia , Gravidez , Pregnenolona/farmacologia , RNA Mensageiro/metabolismo , Trofoblastos/metabolismo
12.
J Clin Endocrinol Metab ; 88(8): 3902-12, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12915686

RESUMO

Circulating hormones and local biotransformation of steroid precursors are both sources of estrogen in human mammary tissue. Estrone-3-sulfate (E(1)S) is an important estrogenic form in premenopausal women, and dehydroepiandrosterone sulfate (DHEAS) constitutes a major adrenal precursor. Membrane transport systems that govern delivery of these anionic steroid conjugates to the mammary gland were investigated. RNA was screened by RT-PCR and Northern blotting for expression of organic anion transporting polypeptide (OATP) (solute carrier family 21A) and organic anion transporter (OAT) (solute carrier family 22A) gene families. OATP-B (SLC21A9) was the major carrier expressed; OATP-D (SLC21A11) and OATP-E (SLC21A12) were less abundant. In normal sections, OATP-B immunolocalized to the myoepithelium that surrounds the ductal epithelial cells. In invasive carcinoma, ductal epithelial cells were positive. OATP-B was characterized in stable transfected Chinese hamster ovary cells. E(1)S affinity constant (K(m)) [K(m) = 5 micro mol/liter, maximum velocity (V(max)) V(max) = 777 pmol/mg.min] and DHEAS (K(m) = 9 micro mol/liter, V(max) = 85 pmol/mg.min) were substrates. The prostaglandins (PG) A(1) and PGA(2) stimulated uptake of E(1)S and DHEAS by increasing V(max) 2-fold but not changing K(m). The effect of PGA was selectively blocked by the lipophilic thiol reagent N-ethylmaleimide but not by the hydrophilic acetamido-4'(iodoacetyl)aminostilbene-2,2'-disulfonic acid, suggesting an interaction between the electrophilic cyclopentenone ring and specific cysteine residues of OATP-B.


Assuntos
Mama/metabolismo , Estrona/análogos & derivados , Esteroides/metabolismo , Algoritmos , Animais , Transporte Biológico Ativo , Northern Blotting , Neoplasias da Mama/metabolismo , Células CHO , Cricetinae , Sulfato de Desidroepiandrosterona/metabolismo , Epitélio/metabolismo , Estrona/metabolismo , Feminino , Imunofluorescência , Humanos , Imuno-Histoquímica , Cinética , Transportadores de Ânions Orgânicos/genética , Transportadores de Ânions Orgânicos/metabolismo , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Sulfatos/metabolismo , Transfecção
13.
Clin Pharmacol Ther ; 38(1): 89-95, 1985 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-4039998

RESUMO

The temporal aspects of theophylline disposition are of interest, as there are predictable time-dependent fluctuations in the pulmonary function of patients with asthma and theophylline serum concentrations may vary throughout a 24-hour period. We studied the extent to which there are significant temporal changes in theophylline kinetics and the relative contribution of distribution, metabolism, and excretion to this phenomenon. Eight healthy men received an intravenous dose (6 mg/kg) of theophylline at 8 AM and 8 PM at 1-week intervals. Serum and urine were analyzed for theophylline and its three major metabolites by HPLC. Distribution volumes and total body and nonrenal clearances showed no differences between morning and evening dosing. The elimination rate was 12% greater after morning dosing. Renal clearance was 24% greater after morning dosing and was accompanied by an increased excretion fraction of unchanged theophylline. Based on total urinary metabolite excretion and the metabolite serum AUCs, there was no evidence of time-dependent variation in theophylline biotransformation. Although theophylline renal clearance is greater after morning dosing, it is only a small fraction of the overall drug elimination and does not change the total body clearance after morning or evening dosing.


Assuntos
Teofilina/metabolismo , Absorção , Administração Oral , Adolescente , Adulto , Análise de Variância , Cromatografia Líquida de Alta Pressão , Ritmo Circadiano , Humanos , Infusões Parenterais , Cinética , Masculino , Distribuição Aleatória , Teofilina/administração & dosagem , Teofilina/sangue , Teofilina/urina
14.
J Biotechnol ; 48(1-2): 129-36, 1996 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-8818279

RESUMO

Pseudomonas fluorescens multiplied in a minimal mineral medium supplemented with millimolar amounts of aluminum (5 mM), iron (5 mM), zinc (3 mM), calcium (2 mM) and gallium (1 mM). A slight decrease in growth rate and a 22% diminution in cellular yield were observed as compared to the control medium. Citrate, the sole source of carbon to which the test metals were complexed, was completely utilized. Although at stationary phase of growth most of the metals were immobilized in an exocellular lipid-rich residue, ultracentrifugation and dialysis studies revealed that metals were associated with phosphatidylethanolamine (PE) from early stages of growth. As growth progressed the metal content of the soluble cellular extract increased reaching an optimum at 35 h of incubation. However, no detectable amounts of metals in this cellular component were discerned at stationary phase of growth. There appeared to be no marked variation in exocellular protein and carbohydrate production in control and metal-stressed cultures. Transmission electron microscopic studies revealed metal rich bodies associated with the cytoplasm. Scanning electron microscopic analyses of the dialyzate aided in the identification of the metal-rich bodies associated with elongated structures comprised of carbon, oxygen and phosphorus. PE appeared to be an important organic constituent of the gelatinous residue.


Assuntos
Metais/toxicidade , Pseudomonas fluorescens/efeitos dos fármacos , Biotecnologia , Divisão Celular/efeitos dos fármacos , Ácido Cítrico/metabolismo , Meios de Cultura , Metais/farmacocinética , Microscopia Eletrônica de Varredura , Fosfatidiletanolaminas/metabolismo , Pseudomonas fluorescens/crescimento & desenvolvimento , Pseudomonas fluorescens/metabolismo
15.
J Morphol ; 191(1): 89-100, 1987 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-3820313

RESUMO

The heart of the beluga whale (Delphinapterus leucas) is described from the dissection of seven specimens. As in most whales the heart is characterized by a transverse broadness and a flatness of the ventricles from one surface to the other and by an apex formed by both ventricles. Heart size parameters are used for comparison with parameters of other marine and land mammals. The heart width index (heart height/heart circumference) averages 31.3 in comparison to 28.7 for the Weddell seal and 39.0 for the felids. The right ventricle is relatively long and narrow with a mean length index (TS/heart height) of 64.7 and a mean breadth index (TP/heart height) of 38.7. These heart parameters are discussed in functional terms.


Assuntos
Cetáceos/anatomia & histologia , Coração/anatomia & histologia , Baleias/anatomia & histologia , Animais , Masculino , Tamanho do Órgão
16.
J Morphol ; 195(3): 305-12, 1988 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-3379644

RESUMO

The arteries and veins of the heart of the beluga whale (Delphinapterus leucas) are described from the dissection of nine specimens. The arterial distribution is composed of the basic mammalian pattern of two major vessels, the left and right coronary arteries, which supply the cardiac tissue. The venous drainage is provided by three major systems which are the great, middle, and small cardiac veins. The vascular characteristics of the heart of the beluga whale are the marked sinuosity of both coronary arteries and their main branches, the numerous large interarterial anastomoses between major vessels, and the duplication of vessels in parallel branches. These characteristics are discussed in functional terms and correlated with the diving ability of the species.


Assuntos
Cetáceos/anatomia & histologia , Vasos Coronários/anatomia & histologia , Baleias/anatomia & histologia , Animais , Artérias/anatomia & histologia , Mergulho , Masculino , Veias/anatomia & histologia , Baleias/fisiologia
17.
Cancer Nurs ; 24(3): 231-9, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11409068

RESUMO

PURPOSE: This exploratory study was designed to examine partners' understanding of patients' experience with prostate or breast cancer and to assess the congruence between patient and partner perceptions regarding social support and the cancer experience. METHODS: Partner understanding of patient mood was assessed by comparing the Profile of Mood States (POMS) questionnaire scores of patients with the POMS scores of their partners (who were instructed to complete the questionnaire as patient proxies). A semistructured interview with corresponding questions for patients and partners assessed the congruency between patient and partner perceptions regarding social support and the cancer experience. RESULTS AND CONCLUSIONS: Twenty-three couples participated. Eight couples were woman with breast cancer and their husbands, and 15 couples were men with prostate cancer and their wives. The patients with breast cancer and their partners were an average age of 48 years and had been married for 20 years, while the patients with prostate cancer and their partners were 67 years of age and had been married for 40 years, on average. Overall, female partners possessed a more accurate understanding of their husbands' experience with prostate cancer than male partners had of women's breast cancer experience. These men tended to overestimate the breast cancer patients' self-reported levels of distress. Patient and partner perceptions regarding social support in the relationship and the cancer experience were also more congruent in prostate couples than in breast couples. This may be a factor not only of gender but also of age and the length of time that these couples had been together, which was twice as long for the prostate couples. Overall, however, patients were well adjusted and felt understood by their partners and satisfied with the support their partners provided.


Assuntos
Afeto , Atitude Frente a Saúde , Neoplasias da Mama/psicologia , Empatia , Neoplasias da Próstata/psicologia , Cônjuges/psicologia , Idoso , Feminino , Humanos , Acontecimentos que Mudam a Vida , Masculino , Pessoa de Meia-Idade , Pesquisa Metodológica em Enfermagem , Fatores Sexuais , Apoio Social , Estresse Psicológico/psicologia , Inquéritos e Questionários
18.
J Clin Anesth ; 12(2): 104-8, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10818323

RESUMO

STUDY OBJECTIVE: To measure the incidence of awareness during induction of anesthesia with etomidate and fentanyl, and to model its frequency as a function of dose of etomidate. DESIGN: Prospective cohort study. SETTING: Anesthesia department of a university hospital. PATIENTS: 30 ASA physical status I, II, and III patients undergoing elective general surgery. INTERVENTIONS: Patients were assigned to one of three groups of etomidate (0.2 mg/kg, 0.3 mg/kg, 0.4 mg/kg) and received fentanyl (2 microg/kg) and 2 x ED(95) of cisatracurium (0.1 mg/kg). Neuromuscular block was monitored with a peripheral nerve stimulator. Intubation was performed after maximum T(1)-depression. To identify awareness, the isolated forearm technique (IFT) was used. The IFT was performed by prompting the patient every 20 seconds. Only a verified response was considered a positive IFT response. Anesthesia was maintained with isoflurane in oxygen/air and fentanyl. MEASUREMENTS AND MAIN RESULTS: Maximum neuromuscular block occurred after 352 +/- 96 seconds and intubation was performed 424 +/- 86 seconds after loss of consciousness (LOC). Awareness was dose dependent: 80% of patients receiving 0.2 mg/kg etomidate, 70% of patients receiving 0.3 mg/kg etomidate, and 20% of patients receiving 0.4 mg/kg etomidate had a positive IFT response. Awareness occurred in one patient 3 minutes after LOC, in 65% during laryngoscopy, and in 30% within the following 120 seconds. One patient had explicit recall without finding awareness unpleasant. Hemodynamic parameters did not differ between patients with a positive or a negative IFT response. CONCLUSIONS: The incidence of awareness during bolus induction can be modeled as dose dependent. However, when combining a short-acting induction drug and a delayed-onset neuromuscular blocker, the continuous infusion of the hypnotic drug may prevent awareness during induction.


Assuntos
Anestesia Intravenosa , Anestésicos Intravenosos/administração & dosagem , Atracúrio/análogos & derivados , Conscientização , Etomidato/administração & dosagem , Fentanila/administração & dosagem , Intubação Intratraqueal , Laringoscopia , Bloqueadores Neuromusculares/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Anestésicos Inalatórios/administração & dosagem , Atracúrio/administração & dosagem , Conscientização/efeitos dos fármacos , Estudos de Coortes , Relação Dose-Resposta a Droga , Procedimentos Cirúrgicos Eletivos , Feminino , Antebraço/inervação , Humanos , Hipnóticos e Sedativos/administração & dosagem , Isoflurano/administração & dosagem , Masculino , Pessoa de Meia-Idade , Bloqueio Neuromuscular , Junção Neuromuscular/efeitos dos fármacos , Estudos Prospectivos , Fatores de Tempo
19.
Ther Umsch ; 59(6): 313-6, 2002 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-12125181

RESUMO

More and more patients are trying out herbal medicine. It is estimated that half of the population have used alternative products at least once in their live. Gastrointestinal diseases often require long-lasting treatments involving many side-effects that can impair the patient's motivation. The majority of persons with symptoms of the irritable bowel syndrome or chronic liver disease resort to non-conventional therapies. However, potential hepatotoxicity of herbal products should not be underestimated. In this article, we discuss herbal preparations in specific gastrointestinal and hepatological indications, concentrating on products that have been tested in randomized, controlled clinical trials. Effective symptomatic treatment of obstipation, irritable bowel and inflammatory bowel disease has been demonstrated with plant-derived preparations. On the other hand phytotherapeutic preparations can not be recommended at present for the treatment of cirrhosis or chronic viral hepatitis based on the available data.


Assuntos
Gastroenteropatias/tratamento farmacológico , Hepatopatias/tratamento farmacológico , Fitoterapia , Extratos Vegetais/uso terapêutico , Ensaios Clínicos como Assunto , Humanos , Extratos Vegetais/efeitos adversos , Resultado do Tratamento
20.
Caring ; 15(12): 10-4, 1996 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-10162617

RESUMO

Most home care providers know that Medicare covers home care nursing; home care aide and medical social services; physical, speech, and occupational therapy; as well as medical supplies and durable medical equipment. However, few agencies realize that they can also use dietitians and respiratory therapists to help meet their patients' needs. Also, few agencies use available resources or establish programs to deliver care to special-needs populations. Yet all of these home care services are reimbursable under the Medicare home health benefit.


Assuntos
Serviços de Dietética/economia , Serviços de Assistência Domiciliar/economia , Medicare/legislação & jurisprudência , Inovação Organizacional , Terapia Respiratória/economia , Idoso , Diabetes Mellitus/economia , Agências de Assistência Domiciliar/economia , Agências de Assistência Domiciliar/tendências , Humanos , Cobertura do Seguro , Serviços de Saúde Mental/economia , Reabilitação/economia , Estados Unidos
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