This work describes a self-sensing technique for a piezoelectrically driven MRI-compatible tweezer style end effector, suitable for robot assisted, MRI guided surgery. Nested strain amplification mechanisms are used to amplify the displacement of the piezo actuators to practical levels for robotics. By using a hysteretic piezoelectric model and a two port network model for the compliant nested strain amplifiers, it is shown that force and displacement at the tweezer tip can be estimated if the input voltage and charge are measured. One piezo unit is used simultaneously as a sensor and an actuator, preserving the full actuation capability of the device. Experimental validation shows an average of 12% error between the self-sensed and true values.

Diss. (sammanfattning) Linköping : Univ., 2002. / Härtill 5 uppsatser.

Obstetric surgical repair is the common therapeutic intervention available to women with obstetrical fistula. While surgical repair can address the physical symptoms, it may not end the psychological challenges that women with fistula face. This longitudinal study investigated the effects of surgical obstetric fistula repairs on the severity of depression and anxiety associated with obstetric fistula among 219 women admitted at six fistula hospitals in Ethiopia. Data was collected through structured Likert-scale questionnaire both on admission (prior to surgical obstetric fistula repairs) and on discharge (post obstetric fistula repairs).. Statistical Package for Social Science plus Analysis of Moment Structures (SPSS-AMOS) version 20 was used for data analysis. Findings indicate that women with obstetric fistula have higher psychological distress such as depression (91%) and anxiety (78%) pre-surgical repair than post-surgical repair. These psychological distresses were exacerbated by poor social and psychological support of women with obstetric fistula by the family and health care professionals. The findings were used to develop integrated mental health treatment model for women with obstetric fistula in order to address psychological health needs of this population. / Health Studies / D. Litt. et Phil. (Health Studies)

Introdução: Os eventos adversos relacionados à assistência à saúde estão associados ao aumento da morbimortalidade e as IRAS correspondem entre 15% a 25% desses eventos. Há escassez de novos antimicrobianos, aumento de cepas resistentes e alto consumo dessas drogas. A adesão às diretrizes de antibioticoprofilaxia cirúrgica é pouco satisfatória e no Brasil há poucos dados sobre o assunto. Objetivo: reconhecer as características e iniciativas institucionais que aprimoram as práticas de uso de antibioticoprofilaxia em neurocirurgia. Objetivos específicos: identificar a conformidade; verificar a associação da conformidade com características de pacientes, cirurgias, hospitais, SCIH e processos relacionados à prevenção de ISC e uso de antibioticoprofilaxia; reconhecer a percepção de anestesiologistas e neurocirurgiões sobre as diretrizes institucionais. Método: Estudo observacional transversal, com população formada por hospitais, prontuários de pacientes neurocirúrgicos, profissionais dos SCIH, anestesiologistas e neurocirurgiões. A amostra de hospitais, anestesiologistas e neurocirurgiões foi tomada por conveniência e o número de prontuários para cada hospital foi calculado com base em 40% de conformidade geral. Resultados: Entre os nove hospitais avaliados, seis são privados, sete de grande porte e cinco tinham certificação de qualidade em 2010. O tempo médio de existência das CCIH foi de 21,9 anos e o dos SCIH de 19,4 anos. A média de horas semanais de profissionais do SCIH/leito hospitalar e por leito crítico foi 0,7 e 3,8, respectivamente. Oito hospitais divulgavam taxas de ISC, sete estratificada por especialidade cirúrgica. Seis hospitais construíram as diretrizes de antibioticoprofilaxia com anuência dos cirurgiões; em quatro deles as recomendações estavam completamente disseminadas e a taxa de adesão era monitorada e divulgada. As 1.011 neurocirurgias (craniotomias, artrodeses, laminectomias outras cirurgias), foram realizadas predominantemente em pacientes do sexo masculino, sendo a média de idade 49,6 anos. Foram excluídos da análise 38 procedimentos por falta de registro. A conformidade geral foi 10,0%; os maiores índices ocorreram nos hospitais 3 (28,9%), 1 (18,2%) e 8 (16,4%), ficando abaixo de 5% nos demais. No Hospital 9 a conformidade geral foi zero. A via administração estava conforme em 100% das neurocirurgias, dose em 90,6%, indicação em 90,0% e momento de início em 77,1%. Houve menor conformidade quanto à duração (26,1%), em 62,2% dos casos, mais longa que o recomendado. Houve associação estatisticamente significativa entre horas de profissionais do SCIH/leito de UTI (p 0,048), divulgação das diretrizes de uso de antibioticoprofilaxia cirúrgica (p 0,035), monitoramento da adesão (p 0,024), divulgação (p 0,015) dos resultados e a conformidade geral; período do dia em que a cirurgia ocorreu, dose (IC 1,72-6,65) e momento de início (IC 1,12-3,01) e tipo de cirurgia, momento de início (IC 1,24-4,25) e duração (IC 1,09-2,59). Foram entrevistados 43 profissionais de seis hospitais. Mais de 80% conheciam e concordavam as diretrizes institucionais e mais da metade referiu sempre segui-las; 37,0% dos anestesiologistas e 50,0% dos cirurgiões acreditavam que as diretrizes eram quase sempre seguidas por outros profissionais. Um cirurgião referiu nunca seguir e acreditar que outros profissionais nunca seguiam as diretrizes. As principais observações dos entrevistados foram falta de disciplina no centro cirúrgico e não divulgação das diretrizes de uso de antibioticoprofilaxia. Foi sugerido ao SCIH realizar treinamentos, disponibilizar amplamente as diretrizes, monitorar e divulgar a adesão às mesmas. Conclusão: O número de profissionais do SCIH/leito crítico, a divulgação das diretrizes, o monitoramento e a divulgação de resultados estão associados a maior conformidade quanto ao uso antibioticoprofilaxia cirúrgica. As inadequações identificadas parecem ter maior relação com resistência microbiana do que com ISC. Os SCIH tinham estrutura conforme exigido pela legislação, mas apresentavam lacunas quanto ao processo de implantação das diretrizes, monitoramento e divulgação de resultados. É imprescindível maior aproximação dos SCIH, especialmente, com os indivíduos envolvidos no processo cirúrgico, bem como a busca por soluções inovadoras, uma vez que os métodos convencionais de intervenção não estão produzindo os resultados desejados. / Introduction: healthcare-related adverse events are associated with increased morbidity and mortality and the Healthcare-associated Infections (HAI) account for 15% to 25% of these events. There is a shortage of new antimicrobials, increase in resistant strains and high consumption of these drugs. Adherence to surgical antibiotic prophylaxis guidelines is poor and there is little data on the subject in Brazil. Objective: to recognize the characteristics and institutional initiatives to improve antibiotic prophylaxis practices in neurosurgery. Specific objectives: identify adherence; verify the association of adherence with characteristics of patients, surgeries, hospitals, Hospital Infection Control Team (ICT) and processes related to prevention of Surgical Site Infection (SSI) and use of antibiotic prophylaxis; recognize the perception of anesthesiologists and neurosurgeons on institutional guidelines. Method: Cross-sectional observational study, carried out with a population consisting of hospitals, medical records of neurosurgical patients, ICT professionals, anesthesiologists and neurosurgeons. The sample of hospitals, anesthesiologists and neurosurgeons was used for convenience and the number of records for each hospital was calculated based on 40% of overall adherence. Results: Among the nine assessed hospitals, six are private, seven are large and five achieved quality certification in 2010. The mean time of Hospital Infection Control Committee (HICC) was 21.9 years and of ICT was 19.4 years. The mean weekly hours of ICT professionals per hospital bed and per critical bed was 0.7 and 3.8, respectively. Eight hospitals disclosed SSI rates, seven stratified by surgical specialty. Six hospitals created the antibiotic prophylaxis guidelines with the surgeons approval; the recommendations were fully disseminated in four and the rate of adherence was monitored and disclosed. The 1,011 neurosurgeries (craniotomy, arthrodesis, laminectomy and other surgeries), were performed predominantly in male patients with a mean age of 49.6 years. A total of 38 procedures were excluded from the analysis due to lack of records. Overall adherence was 10.0%; the highest rates were observed in Hospitals 3 (28.9%), 1 (18.2%) and 8 (16.4%), being <5% in the others. Overall adherence was zero in Hospital 9. The administration route was appropriate in 100% of the neurosurgeries, dose was appropriate in 90.6%, indication in 90.0% and time of onset in 77.1%. There was a lower adherence regarding duration (26.1%), in 62.2% of cases, longer than recommended. There was a statistically significant association between hours of ICT professional / ICU bed (p = 0.048), dissemination of surgical antibiotic prophylaxis use guidelines (p 0.035), adherence monitoring (p 0.024), disclosing of results (p 0.015) and the period of the day when the surgery occurred (CI = 1.7 to 6.6). A total of 43 professionals from six hospitals were interviewed. More than 80% knew about and agreed with the institutional guidelines and more than 50% reported they always followed them; 37.0% of anesthesiologists and 50.0% of surgeons believed that the guidelines were almost always followed by other professionals. One surgeon reported he never followed and believed that other professionals never followed the guidelines. The main observations of the respondents were lack of discipline in the operating room and lack of dissemination of antibiotic prophylaxis use guidelines. It was suggested to the ICT to carry out training, make the guidelines broadly available, monitor and promote adherence to them. Conclusion: The number of ICT professionals/critical bed, dissemination of guidelines, monitoring and disclosing of results are associated with higher adherence regarding antibiotic prophylaxis use; period of surgery, dose (IC 1,72-6,65) and initial time (IC 1,12-3,01) and surgery type, initial time (IC 1,24-4,25) and duration (IC 1,09-2,59). The identified inadequacies seem more related to microbial resistance than with SSI. The ICT had structure as required by law, but had shortcomings regarding the process of guideline implementation, monitoring and dissemination of results. It is of the utmost importance to promote better approach to ICT, especially with the individuals involved in the surgical process as well as the search for innovative solutions, as the conventional methods of intervention are not yielding the expected results.

A reconstrução microcirúrgica de faringe e esôfago com jejuno é uma das opções para a reparação de defeitos resultantes de faringolaringectomias. Suas principais vantagens são: o diâmetro da alça jejunal é compatível com o diâmetro das bocas faríngea e esofágica, apresenta menos estenose do que reconstruções cutâneas e há menos contaminação do que quando se emprega o cólon. Entretanto, o pedículo vascular é, por vezes, curto; além disso, as paredes flácidas do intestino delgado e sua secreção mucosa dificultam a adaptação de prótese fonatórias. Finalmente, é necessária uma laparotomia para a obtenção do segmento jejunal, o que aumenta a potencial morbidade operatória. O objetivo deste trabalho foi avaliar de forma retrospectiva os aspectos técnicos, mobi-mortalidade e resultados funcionais de uma série de doentes submetidos a este método reconstrutivo, numa única instituição. No período de 1989 a 2000, 35 pacientes do sexo masculino, com média de idade de 55 anos, foram submetidos à reconstrução faringoesofágica com retalho microcirúrgico de jejuno, no Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo. Trinta e quatro doentes eram portadores de tumores malignos do trato aerodigestivo alto, e um sofreu um ferimento cervical por arma de fogo. Onze casos foram previamente submetidos à radioterapia. A reconstrução foi imediata na maioria dos casos (85,7%). Através de laparotomia mediana supra-umbilical, escolheu-se segmento de alça jejunal de tamanho compatível, situado de 30 a 50 cm do ângulo do Treitz e nutrido por ramos longos dos vasos mesentéricos superiores, atentando-se para preservar a continuidade da arcada vascular primária em todo o segmento a ser transplantado. Este foi transposto para o seu leito definitivo sempre em posição isoperistáltica. Obteve-se um restabelecimento do trânsito digestivo alto em 84,0% dos casos. Houve perda do retalho em 14%, e a taxa de mortalidade foi de 2,9%, ocasionada por abdome agudo obstrutivo. O resultado funcional foi avaliado através de escala de pontuação de Schechter, incluindo parâmetros como deglutição, voz e peso corpóreo. Em 45% dos casos, observou-se uma pontuação entre 5 e 6, evidenciando uma boa qualidade de reabilitação. Em virtude da gravidade dos doentes e da magnitude dos atos operatórios, concluiu-se que a reconstrução faringoesofágica com retalho microcirúrgico jejunal foi um método exeqüível em nosso meio, oferecendo uma boa qualidade de reabilitação funcional, com morbi-mortalidade aceitável / Microsurgical reconstruction of the esophagus and pharynx with a jejunal segment is one of the current options available for repairing defects caused by pharyngolaryngectomies. Main advantages of this technique are: compatible diameters of the jejunal segment with the pharyngeal and esophageal openings, lower incidence of stenosis when compared to cutaneous reconstructions, and less contamination in relation to techniques using colonic fragments. Nevertheless, the vascular pedicle is sometimes too short and the flaccid walls of the jejunum associated with its mucous secretion render adaptation to phonatory prosthesis more difficult. Finally, operative morbidity may be increased due to the need for laparotomy in order to obtain the jejunal segment. The aim of this work was to evaluate, in a retrospective fashion, the technical aspects, morbi-mortality and functional results of a series of patients submitted to this reconstructive method at a single institution. During the period of 1989 to 2000 a total of 35 male patients with an average age of 55 years received a microsurgical flap of the jejunum for pharyngoesophageal reconstruction, at the Hospital das Clínicas of São Paulo University Medical School. Thirty four patients had malignant tumors of the upper aerodigestive tract and one had a injury. Eleven cases had been previously submitted to radiotherapy. The majority of patients (85.7%) underwent reconstruction immediately following ablative surgery. By means of median supraumbilical laparotomy an intestinal segment located 30 to 50 cm away from the angle of Treitz was chosen taking into note that it had to be nourished by long branches of the superior mesenteric vessels and to also maintain its continuity to the primary vascular arcade throughout the segment to be transplanted. The segment was transposed to its definitive vascular bed always respecting an isoperistaltic position. Functional effective restoration of the higher digestive transit was possible in 84.0% of cases. Graft loss occurred in 14%, and the mortality rate was of 2.9%, caused by obstructive acute abdomen. Functional results were evaluated according to the Schechter scoring scale, where parameters such as swallowing, voice and weight are taken into account. In 45% of the cases the scores were between 5 and 6, representing good repairing quality. Considering the degree of severity of these patients and the magnitude of the surgical procedures, we concluded that pharyngoesophageal reconstruction utilizing microsurgical jejunal flaps is a feasible method with good functional rehabilitation results and acceptable morbidity and mortality rates for our patient population

A vídeo-laparoscopia é uma inovação tecnológica que trouxe indiscutíveis vantagens e também novos desafios, incluindo nestes, as diretrizes para o reprocessamento adequado dos instrumentais e seus acessórios. A autoclavação dos instrumentais laparoscópicos desmontados é mais segura, uma vez que a condução térmica é facilitada. No entanto, são artigos complexos, compostos por múltiplas peças e a sua remontagem no momento da cirurgia traz transtornos às equipes cirúrgicas, correndo o risco do não funcionamento ou de danos às peças pela montagem inadequada. Existe um arraigado conceito, entre os profissionais da saúde, que para o sucesso da esterilização ser alcançado, é necessário o contato direto do vapor com todas as superfícies dos materiais submetidos à autoclavação sem considerar também o raciocínio do calor latente. A destruição microbiana por meio da esterilização pelo vapor está essencialmente relacionada ao calor latente, gerado pela condensação deste em contato com a superfície fria do material, promovendo a termocoagulação das proteínas microbianas. É uma prática comum nos hospitais brasileiros a realização da autoclavação de instrumentos previamente montados, apesar de não haver comprovação científica consistente dessa prática. Isto posto, esta investigação teve o objetivo de avaliar a eficácia do processo de esterilização a vapor dos instrumentais laparoscópicos previamente montados, comparando os seus resultados com os desmontados, considerada neste estudo a melhor prática. Tratou-se de uma pesquisa experimental, laboratorial, com abordagem quantitativa. Foram selecionados dois modelos de maior complexidade dentre os instrumentos laparoscópicos para realização do estudo, sendo eles: trocarte com válvula tipo janela rosqueada de 5mm, composto por cinco peças desmontáveis e pinça para dissecção de 5mm, composta por quatro peças desmontáveis. Cada peça dos instrumentais foi considerada como uma unidade amostral na análise microbiológica. Este estudo teve então como Grupo Montado: instrumentais laparoscópicos montados; Grupo Desmontado: instrumentais laparoscópicos desmontados; Grupo Contagem Microbiana: instrumentais laparoscópicos submetidos aos procedimentos de contaminação desafio, encaminhados diretamente para o teste de contagem microbiana. O inóculo para a contaminação desafio constitui-se de suspensão do Geobacillus stearothermophilus, na forma esporulada, acrescido de sangue de carneiro desfibrinado esterilizado. Todos os instrumentais foram contaminados desmontados com o inóculo desafio. Os grupos Montado e Desmontado foram submetidos aos processos de limpeza manual, complementada pela limpeza automatizada em lavadora ultra-sônica com retrofluxo, enxágüe em água corrente e sob pressão. Por fim, foi realizado o enxágüe com água destilada esterilizada e secagem com ar comprimido medicinal. Na seqüência, foi realizado sorteio para composição dos Grupos Montado e Desmontado. Os instrumentais foram embalados individualmente em papel grau cirúrgico e submetidos à esterilização a vapor em autoclave com pré-vácuo. Após a esterilização, os instrumentais foram avaliados quanto à eficácia da esterilização, por meio dos resultados dos testes de cultura microbiológica, utilizando o método de inoculação direta. No Grupo Montado foram recuperados os microrganismos teste em três peças de uma mesma pinça (3/48) e em três peças de um mesmo trocarte (3/60), enquanto que no Grupo Desmontado o microrganismo teste não foi recuperado nas unidades amostrais estudadas. Nas condições desse experimento, os resultados obtidos refutaram a hipótese inicial da pesquisa quanto à segurança da autoclavação das pinças e dos trocartes utilizados em cirurgia laparoscópica previamente montados / The video laparoscopy is a technological innovation that brought unquestionable advantages and, also, new challenges, like: the policies for the adequate reprocessing of the instruments and its permanent accessories. The steam sterilization of disassembled laparoscopic instruments is much safer, once that the thermal conduction is facilitated. However, laparoscopic instruments are quite complex articles; they are composed by many parts and the reassemblage in site at the moment of the surgery brings many inconveniences to the surgical team, like the possibility of the instrument’s malfunctioning or non functioning at all, or even damages to the instruments due to inadequate assembling. There is a strong belief among the Healthcare Professionals about the necessity of the direct contact of the steam with all the surface of the materials submitted to the steam sterilization, which is correct, however it doesn´t consider the latent heat assumption as well. The destruction of the microbiological material throughout the steam sterilization is essentially related to the latent heat, created by the vapor condensation when in contact with the instrument´s cold surface, promoting the thermal-coagulation of microbiological proteins. Many hospitals use the steam sterilization of previously mounted instruments, although there´s not any consistent scientific evidence about the efficiency of this practice. Once stated this point, this investigation´s aim was: evaluate the effectiveness of the steam sterilization process of the previously mounted, permanent laparoscopic instruments. It was an experimental laboratorial research, using a quantitative approach. Two models of permanent laparoscopic instruments of major complexity were chosen for the experiments: a trocar with a 5mm screw window valve, composed by five dismountable parts and a 5mm dissection clamp, composed by four dismountable parts. Each part of the instruments was considered as a sample unit on the microbiological analysis. This study it had the Assembled Group was: mounted laparoscopic instruments; the Disassembled Group was: disassembled laparoscopic instruments; the Microbiological Counting Group was: laparoscopic instruments submitted to the - challenge contamination - procedures, being directed straight to the test of microbiological counting. The inoculants material used for the challenge contamination consisted on the suspension of the Geobacillus stearothermophilus, in its spore form, plus defibrinated and sterilized sheep blood. All the instruments were contaminated, disassembled with the challenge inoculants material. The Assembled and Disassembled groups were submitted to the manual cleaning processes, enhanced by the automatic cleaning in an ultrasonic washer with retro-flux, rinsed in running and under pressure water. At last, a rinsing with distilled water was performed; the drying process was made with medicinal compressed air. Then, a sorting was performed to decide about the composition of the Assembled and Disassembled groups. The instruments were individually packed in surgical paper and submitted to the steam sterilization in a pre-vacuum sterilizer machine. After the sterilization, the instruments were evaluated according to sterilization effectiveness throughout the microbiological culture test´s results, using the straight inoculation method. In the Assembled Group the microorganism´s tests were recovered in three parts of one same clamp (3/48) and in three parts of the same trocar (3/60), in the Disassembled Group the test microorganism wasn´t recovered in any of the sample unities. The results, under the conditions of the experiment, refuted the hypothesis of safety in the usage of the steam sterilization in previously mounted used clamps and trocar in laparoscopy

Abstract The purpose of this study was to investigate the clinical implications of a combination of a peripheral opioid, paracetamol (APAP) and ketoprofen (KTP) on the intensity of acute postoperative pain by focusing on tonsillectomy (TE) and third molar extraction. A second focus in the study was to assess the utility of the surgical ultrasonically activated scalpel (HS) technique for TE. In Study I, TE was performed on one side using the HS and on the contralateral side using a “blunt dissection technique”. The first TE study (I) demonstrated that - based on NRS pain scores during the first 10 postoperative hours - intra-operative blood loss and need for haemostasis were greater on the blunt dissection side than on the HS side. Pain scores were higher on the HS side than on the cold dissection side during the second postoperative week. Study III assessed the analgesic effect of a peripheral dose of 4 mg morphine. The peritonsillar infiltration of morphine locally did not significantly decrease pain compared to the control side. Studies (II and IV) included patients who were scheduled for third molar extraction. In Study II, patients received 1000 mg APAP or 100 mg KTP or both or a placebo to evaluate pain relief after third molar extraction. This study demonstrated that the mean sum of pain intensity differences scores up to the 1.5 h mark and the mean time to onset of pain relief at rest and on swallowing were favoured in the combination group more than in the APAP, KTP, and placebo groups. In Study IV, patients were assigned for a submucosal injection of 2 mg morphine or NaCl into either the non-inflamed (Trial I) or the inflamed (Trial II) peridental tissue, while the active control group received the same drugs in reverse order intramuscular (IM). Postoperative pain intensity at rest and on swallowing was assessed in all studies using the numerical rating scale (NRS). Pain scores in the peripheral morphine group at rest (Trials I and II) and on swallowing (Trial I) were not associated with any further pain reduction. Pain scores on swallowing during the 2–6 hours postoperative period (Trial II) were greater in the IM morphine group. HS TE was associated with decreased pain in the early postoperative period, but there was increased pain and otalgia during the second postoperative week. Locally administered peripheral morphine was not associated with any benefit during the postoperative period after TE. The multimodal analgesia combination of a single dose of KTP and APAP demonstrated the same benefit during the early postoperative period without an increase in side effects. Locally administered peripheral morphine produced significant analgesia on swallowing during the early postoperative stage in inflamed tissue after third molar extraction. / Tiivistelmä Hyvä leikkauksen jälkeinen kivunhoito on yksilöllisesti suunniteltua, turvallista, helppokäyttöistä ja taloudellista. Nykyään pyritään kivunlievityksessä hyödyn-tämään eri vaikutuspaikkoihin kohdistuvia hoitoja eli multimodaalista kivun¬hoitoa. Tämän työn tarkoituksena oli selvittää eri kivunlievitysmenetelmien tehoa ja turvallisuutta kahdessa eri toimenpiteessä: nielurisojen poistoleikkauksen (TE) tai viisaudenhampaan poistoleikkauksen jälkeen. Tutkimuskokonaisuus käsittelee leikkaustekniikan (Ultraääniveitsi), lääke-ainekombinaatioiden ja perifeerisesti annostellun morfiinin vaikutusta post-operatiiviseen kipuun. Tutkimusaineisto koostuu neljästä tutkimuksesta. Kaikki työt olivat satunnaistettuja ja kaksoissokkoutettuja. Kipu mitattiin numeerista asteikolla (Numerical Rating Scale, NRS) sekä levossa että nielemisen aikana enintään 2 viikon ajan. Ultraääniveitsen käytön vaikutusta postoperatiiviseen kipuun verrattiin perinteiseen leikkaustekniikkaan. Potilailta toinen nielurisa poistettiin ultraääni¬veistä käyttäen ja toinen tylpästi irrotellen kylmiä instrumentteja käyttäen. Kipu oli perinteisellä tekniikalla leikatulla puolella voimakkaampi kuin ultraääni¬veitsellä leikatulla puolella leikkauspäivänä. Toisen leikkauksen jälkeisen viikon aikana kipu oli kuitenkin voimakkaampaa ultraääniveitsillä leikatulla puolella. Parasetamolin (APAP), ketoprofeenin (KTP) tuottamaa kivunlievitystä ja näiden yhteisvaikutusta verrattiin viisaudenhampaan poistoleikkauksen jälkeen. KTP ja APAP kombinaatio antoi tehokkaamman kivunlievityksen ja nopeamman hoitovasteen kuin kumpikaan lääke yksin annettuna. Perifeerisesti infiltroidun morfiinin vaikutusta kipuun tutkittiin TE sekä viisaudenhampaan poistoleikkauksen jälkeen. TE jälkeen toiselle puolelle infiltroitiin nielurisan taakse 4 mg morfiinia ja toiselle puolelle fysiologista suolaliuosta. Viisaudenhampaan poistoleikkauksessa paikallisesti infiltroitua 2 mg morfiinia verrattiin lihakseen annettuun samaa lääkkeeseen kahdessa eri tilanteessa, joko tulehtuneeseen tai tulehtumattomaan kudokseen annosteltuna. Paikallisesti infiltroidulla morfiinilla ei todettu kipua lievittävää vaikutusta TE jälkeen. Tulehtuneeseen kudokseen infiltroitu morfiini lievensi leikkauksen jälkeistä nielemiskipua 2–6 tuntia leikkauksesta. Tulehtumattomaan kudokseen infiltroidulla morfiinilla ei saatu lisäetua. Yhteenvetona voidaan todeta, että TE ja viisaudenhampaanpoistoleikkauksen jälkeen kivunhoitoa voidaan optimoida multimodaalisin kivunhoidon keinoin. Tutkimustulokset auttavat potilaskohtaisen yksilöllisen kivunhoidon suunnittelussa.

[pt] As doenças vasculares são enfermidades graves e seus tratamentos são complexos e necessitam de procedimentos cirúrgicos. Para a realização desses procedimentos, são necessários equipamentos, equipes qualificadas e unidade de terapia intensiva (UTI) equipada para o pós-operatório. Hospitais de ensino devem atender à legislação vigente que preconiza um número mínimo de cirurgias para aprovação do residente no programa de formação. Assim, propõe-se, via otimização, encontrar soluções eficientes para o planejamento e programação de cirurgias eletivas que atendam à legislação. Este problema é tratado em 2 níveis. O primeiro é relativo ao planejamento e é chamado de Master Surgical Schedule (MSS) que consiste em definir os recursos necessários para a realização de um conjunto de procedimentos. O segundo se refere à programação e é chamado de Surgical Case Assigment Problem (SCAP) e tem por objetivo alocar o médico a cada cirurgia. Assim, foram propostos dois modelos de programação matemática, um para o MSS e outro para o SCAP. Estes modelos foram aplicados no caso real da alocação de residentes para cirurgias vasculares no Hospital Universitário Pedro Ernesto. Como resultado do modelo MSS, identificou-se a necessidade de mais anestesistas e maior disponibilidade de equipamentos para atender à legislação de formação de residentes. Por fim, como resultado do SCAP, o quantitativo de cirurgias foi distribuído entre os cirurgiões de forma balanceada. / [en] Vascular diseases are serious diseases and their treatments are complex and require surgical procedures. In order to perform these procedures, is required equipment, qualified teams and an intensive care unit (ICU) equipped for the postoperative period. Teaching hospitals must comply with current legislation that recommend a minimum number of surgeries for the resident s approval in the training program. Thus, it is proposed, through optimization, to find efficient solutions for the planning and programming of elective surgeries that comply with the legislation. This problem is dealt with on two levels. The first is relative to planning and is called the Master Surgical Schedule (MSS), which consists of defining the necessary resources to perform a set of procedures. The second one refers to programming and is called Surgical Case Assigment Problem (SCAP) and aims to allocate the doctor to each surgery. Thus, two models of mathematical programming were proposed, one for MSS and another for SCAP. These models were applied in the real case of residents allocation for vascular surgeries at Pedro Ernesto University Hospital. As a result of MSS model were identified the need for more anesthesiologists and greater availability of equipment ensure the cover of resident training legislation. Finally, as a result of SCAP, the quantity of surgeries was distributed equitably distributed among surgeons.

Abstract The purpose of the present study was to implement a unique low-field open magnetic resonance scanner for perioperative imaging in neurosurgery. A paradigm was created for joint intraoperative/interventional MRI, including premises, surgical practice and an operational model. The feasibility of the paradigm was tested in clinical work. The joint use of the facilities between the Departments of Neurosurgery and Diagnostic Radiology was found to enhance the economic rationale and provide for perioperative imaging. It was also found to be organizationally viable in the long run. Intraoperative MRI was implemented and studied in connection with neuronavigation and other intraoperative instruments, tools and imaging modalities. The unique shut down possibility of the magnet enabled staged operating-imaging practice, use of non-MRI-compatible instruments and devices, multimodal imaging with navigation, and avoidance of safety risks associated with operating in magnetic fringe fields. Two dynamic contrast enhanced MR imaging sequences, which used undersampled projection reconstruction, were implemented in the low-field scanner. The applicability of these imaging sequences to follow contrast enhancement of meningiomas was studied in laboratory experiments and in two patient cases. The laboratory experiments showed a nearly linear response in signal intensity to the concentration of gadopentetate dimeglumine in purified water up to 1.25 mM. The patient cases showed results consistent with an earlier study performed at high-field strength. The potential of low-field MRI study including dynamic contrast enhanced imaging to predict surgical and histopathologic characteristics of meningiomas was studied in a series of 21 patients. Dynamic contrast enhanced imaging could be used to evaluate microvessel densities of meningiomas. Surgical bleeding, blood loss during operation, progesterone receptor expression and collagen content were statistically best correlated to the relative intensity of meningioma on FLAIR images. Tissue hardness correlated best with relative intensity on T2-weighted images.

Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-07-31T12:08:04Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) MILTON - COLACAO DE GRAU.pdf: 6650065 bytes, checksum: 996dbdc7d9d5a860a4e5584e1429a777 (MD5) / Made available in DSpace on 2017-07-31T12:08:04Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) MILTON - COLACAO DE GRAU.pdf: 6650065 bytes, checksum: 996dbdc7d9d5a860a4e5584e1429a777 (MD5) Previous issue date: 2016-02-12 / CAPES / Objetivo: Aplicar uma metodologia construtivista fundamentada no uso de novos modelos cirúrgicos suínos no ensino-treinamento de procedimentos de emergências para capacitação de estudantes de medicina. Métodos: Estudo transversal, analítico, prospectivo, comparativo, controlado, divido em duas Fases. Primeira Fase: Ensino-Treinamento de Monitores; Segunda Fase: Ensino-Treinamento das Turmas de 2° e 8° Períodos. Amostra constituída de 332 estudantes divididos em 03 grupos: A, Monitores; B, 2° período e C, 8° período, 15 foram excluídos estudantes. Os grupos receberam aulas de cinco procedimentos de emergências aplicando didática diferenciada para cada grupo. Estes treinaram os procedimentos duas horas por semana durante um semestre. Aplicou-se o Protocolo de Avaliação de Ensinotreinamento de Procedimentos de Emergência (Pré e Pós-teste), prova objetivadiscursiva e a Escala de Avaliação Global de Desempenho Operativo (OSATS) para estimação de habilidades desenvolvidas. Resultados: Grupo A desenvolveu médias superiores aos grupos B e C em todas as variáveis. As diferencias entre os grupos B e C não foram significativas. O grupo C não demostrou um desempenho superior aos outros. Conclusões: Estudantes de medicina desenvolveram conhecimentos e habilidades clinico-cirúrgicas homogêneas mediante a aplicação da metodologia construtivista fundamentada no uso de modelos cirúrgicos suínos e anatômicos, sendo capazes de executar satisfatoriamente procedimentos invasivos de emergência. / Aims: Apply a constructivist methodology based on the use of new surgical swine models in the teaching and training of emergency procedures for training medical students. Methods: Cross-sectional, analytical, prospective, comparative, controlled, divided into two phases. First phase: Teaching and Training of Monitors; Stage Two: Teaching and Training of Classes 2 and 8th periods. Sample consisting of 332 students divided into 03 groups: A, Monitors; B, 2nd period and C, 8th period, 15 students were excluded. The five groups received emergency procedures applying different classes teaching for each group. These procedures have trained two hours per week for one semester. Applied the Protocol Assessment of Teaching and Training Emergency Procedures (pre and post-test), the objective is discursive event and the Global Assessment Scale Operating Performance (OSATS) pet developed skills. Results: Group A developed higher average than the B and C groups for all variables. The differences between groups B and C were not significant. Group C did not show superior performance to others. Conclusions: Medical students developed clinical and surgical skills homogeneously by applying the constructivist methodology based on the use of surgical pigs and anatomical models and performed invasive emergency procedures.