Introduction Liver resection offers curative treatment to a number of malignant conditions. It has traditionally been associated with poor post-operative outcomes. More recently a mortality rate of less than five per cent has become established but morbidity remains high. Enhanced Recovery After Surgery (ERAS) has become established practice in a number of surgical specialties and has shown improvement in post-operative outcomes. ERAS has been introduced for liver resection however practice is less well established and liver surgery has several complexities that need to be accommodated in order to optimise post-operative care. The following thesis aims to identify areas that require clarification and investigate peri-operative care components to establish optimum practice. Methods Systematic review and meta-analysis were performed to identify areas that required clarification and were lacking in sufficient evidence to guide practice. A randomised controlled trial was performed to compare established areas of practice. Prospective observational studies were performed when exploratory investigation was required. Retrospective analysis of a prospectively collected database was performed to identify risk factors for post-operative morbidity. Patients included in the above trials underwent liver resection at the Royal Infirmary of Edinburgh, UK, between December 2012 and August 2014. Results Post-operative analgesia after liver resection was identified as being an area that was controversial. Continuous wound infiltration was shown to offer improved recovery times when compared to epidural with no significant associated disadvantages. After retrospective review of 603 liver resections, extended resection was observed to be associated with high morbidity rates. It was hypothesised that post-operative nutritional requirements might be higher in these patients. This was not found to be the case but post-operative energy requirements were found to be difficult to predict after liver resection, suggesting the benefits of real-time monitoring of energy expenditure. Finally acetaminophen metabolism was suspected of being altered after major resection. An observational study suggested that despite altered metabolism, glutathione deficiency was not observed after major resection and so liver volume was not a contra-indication to acetaminophen administration. Summary Liver resection offers a complex set of conditions on which to base an enhanced recovery protocol. Current ERAS literature does not completely address these issues. This thesis has investigated several aspects of care unique to liver surgery in an attempt to optimise peri-operative care and improve post-operative outcome after liver surgery.

Class of 2012 Abstract / Specific Aims: The purpose of this study was to evaluate the effectiveness of various post-operative prophylaxis methods in lung transplant patients by comparing the incidence of venous thromboembolism (VTE) before and after the implementation of a standardized hospital order set at the University of Arizona Medical Center (UAMC) in April 2007. Methods: Paper and electronic medical charts were retrospectively reviewed if patients had a lung transplant date between October 31, 2003 – October 31, 2010. A computerized database was used to collect demographic data, length of stay (LOS), comorbid conditions, prophylaxis type (including dose/frequency), and date/type of thromboembolic events in the post-operative period prior to discharge and up to 1-year post-discharge. Main Results: Ninety-two patient charts were included in the study with 35 charts in the pre-order set (“Before”) group and 57 charts in the post-order set (“After”) group. All baseline characteristics were similar between groups except age (mean age difference 8.1 yrs, p=0.003), use of mycophenolate (Before n=24, After n=54; p=0.002), and use of medications that increase risk of VTE (Before n=6, After n=2; p=0.05). The April 2007 protocol significantly increased the number of patients receiving any method of prophylaxis (p<0.0001). However, receiving prophlyaxis did not significantly reduce event rates or readmissions due to VTE. Conclusions: Although implementation of the April 2007 protocol did not significantly reduce VTE event rates and readmissions, VTE prophylaxis should continue to remain a priority. Adherence to the implemented protocol may reduce the number of patients left without effective methods of prophylaxis.

Evaluation of quality of surgical care begins with the Donabedian triad focusing on structure, process, and outcomes. Outcomes, which are inherently patient-centered, are most easily and commonly measured, and are indeed fundamental to evaluating the quality of surgical care. Specifically, post-operative adverse events (AEs) remain the most frequently measured and reported outcomes, as they represent harm to the patient; and thus, are often used as a means for comparing institutional, as well as, individual surgeon performance. The importance of rigorous recording of clearly defined AEs, although widely recognized, is poorly performed in practice. In previous work, created in accordance to the Clavien-Dindo classification, we developed and integrated a classification of Thoracic Morbidity & Mortality (TM&M) within The Ottawa Hospital’s Division of Thoracic Surgery allowing objective and standardized assessment of all post-operative AEs following all surgeries. In this thesis, the complementary studies that were conducted surrounding the continued clinical application and critical appraisal of the TM&M classification system as a means toward quality improvement are described. Using standardized reporting of both incidence and severity of post-operative complications, we first provide an overview of the burden and distribution that the two most pervasive post-operative AEs have on the thoracic surgical patient population, including prolonged alveolar air leak and atrial fibrillation (Chapter I and II). Next, we explore the inter-system reliability of reported AEs following thoracic surgery from the American College of Surgeons-National Surgical Quality Improvement Program (ACS-NSQIP), which is widely considered the most prominent surgical quality improvement effort, and the TM&M classification system in order to better understand to what extent the methods used to collect data may be impacting results (Chapter III). The disparity between the two systems and the duplicate participation indicates distinct value to the two quality reporting systems. An absence of evidence in the literature regarding individual surgeon outcome reporting and its impact on the quality of care prompted us to create risk-adjusted, surgeon-specific outcome reports to enable individualized performance measurement and feedback (Chapter IV). A priority for the division has been to ensure such measurement translates into reproducible improvements in surgical performance. To do so, we implemented complementary continuous quality improvement seminars to provide an additional forum for discussion regarding collective results, utilizing positive deviance, to unmask best performers as a catalyst for discussing practice measures to improve specific AEs. Lastly, an evolutionary understanding of the heterogeneity of TM&M data was considered as a critical next step to following improvements in care (Chapter V). Recognizing that software was necessary to efficiently record and review TM&M data, iterative development led to an evolution of a real-time, web-based, point-of-care Thoracic Surgery Quality monitoring, Information management, and Clinical documentation (TSQIC) software system. The TSQIC system has enabled bedside data recording and storage, and automated dynamic analysis and reporting of surgical volume and quality. We observe that measurement of TM&M data alone, while necessary, is not sufficient for quality improvement. We suggest that in addition to implementing a complementary point-of-care, interactive, web-based quality monitoring system, key factors for improving quality and patient safety include a combination of temporal analyses of AEs, effective surgeon-specific feedback mechanisms, actionable information based on best practice measures, standardization of case reviews, and a unit-based approach conducive of team-work and safety culture, led by open and collegial dialogue.

No description available.

Bibliography: pages 113-118. / This study aims to investigate the use of hospitalized children's free drawings to assess the presence of post-operative pain in patients where language barriers previously prevented the use of existing pain assessment methods. This research involved 50 children ages 6 - 13 years, mostly from impoverished families, treated at the Red Cross Children's Hospital. The design is exploratory-descriptive in nature. The methodology was to collect drawings (110) on admission, after surgery (described as minor to moderate), when the children were expected to be experiencing pain, and also on discharge from hospital. These drawings were compared for picture content and children's responses to a combination of two scales developed and tested elsewhere (Word Graphic Scale and the Pain Ladder Scale), in an attempt to devise an alternative route to gauge subjective pain through drawings. Parental (44) and respondent (6) interviews provided information on parental reaction to children when in pain, and patient pain behaviour. Evidence suggests that children's free drawings can be successfully used in assessing the presence of pain but not the intensity thereof, and are recommended for use in the treatment process.

Almost half of patients recovering from open chest surgery experience atrial fibrillation (AF) that results principally from inflammation in the pericardial space surrounding the heart. Given that post-operative AF is associated with increased mortality, effective measures to prevent AF after open-chest surgery are highly desirable. In this study, we tested the concept that extracellular vesicles (EVs) isolated from human atrial explant-derived cells can prevent post-operative AF. Middle-aged female and male rats were randomized to undergo sham operation or induction of sterile pericarditis followed by trans-epicardial injection of human EVs or vehicle into the atrial tissue. Pericarditis increased the probability of inducing AF while EV treatment abrogated this effect in a sex independent manner. EV treatment reduced infiltration of inflammatory cells and production of pro-inflammatory cytokines. Atrial fibrosis and hypertrophy seen after pericarditis was markedly attenuated by EV pre-treatment; an effect attributable to suppression of fibroblast proliferation by EVs. Our study demonstrates that injection of extracellular vesicles at the time of open-chest surgery shows prominent anti-inflammatory effects and prevents AF due to sterile pericarditis. Translation of this finding to patients might provide an effective new strategy to prevent post-operative AF by reducing atrial inflammation and fibrosis.

Small intestinal ileus affects up to half of all horses undergoing small intestinal surgery, leading to prolonged gastrointestinal (GI) transit time which can be life-threatening. Various prokinetic medications have been associated with varying side effects, questionable efficacy, and increased cost. Gum chewing as a form of sham feeding is used as a safe, effective, well-tolerated, and inexpensive way to ameliorate ileus following GI surgery in humans. Bit chewing for horses, an analogous activity, has been shown to significantly decrease GI total transit time (TTT); however, a direct effect of bit chewing on gastric emptying time (GET), small intestinal transit time (SITT), and total orocecal transit time (OCTT) has not been investigated. Our objective was to determine whether bit chewing increased small intestinal motility and decreased GE, SITT, and OCTT in clinically normal horses. Gastrointestinal motility was compared in horses that were bit chewing compared to control conditions (no bit chewing) in a prospective crossover design study using acetaminophen as a marker for GET and video endoscopy (ALICAM) capsules to determine GET, SITT, and OCTT. Bit chewing was well tolerated by all horses with no side effects noted. Bit chewing led to a shorter GET, SITT, and significantly shorter OCTT when compared to the control group (P = 0.015). Median times for bit chewing conditions were as follows: GE 2.86 hr, SITT 3.65 hr, and OCTT 6.15 hr whereas the median times for control conditions were as follows: GE: 5 hr, SITT 4.4 hr, and OCTT 9.92 hr. In summary, bit chewing proves to be a potential tool to hasten the motility of the oral GIT. It is safe, inexpensive, and potentially effective prokinetic treatment to horses suffering from postoperative ileus and further investigation is warranted. / Master of Science / Ileus, or a temporary lack of intestinal motility, is a common life-threatening problem in horses, especially following abdominal surgery. Current treatments have questionable efficacy and high cost. In human patients suffering from ileus, sham feeding with gum chewing that mimics normal food consumption with no food ingested has shown promising results in improving clinical signs and restarting gastrointestinal motility. Bit chewing, an analogous activity in horses, also decreases gastrointestinal (GI) total transit time (TTT). However, ileus in horses typically affects the small intestine, which is a part of the GI tract that has not been investigated in regards to bit chewing. Our objective was to determine whether bit chewing shortens gastric emptying time (GET), small intestinal transit time (SITT), and total orocecal transit time (OCTT) in clinically normal horses. Gastrointestinal motility was compared in horses that were bit chewing compared to control (no bit chewing) conditions in a prospective crossover design study using acetaminophen serum samples as a marker for GET and video endoscopy (ALICAM) capsules to determine GET, SITT, and OCTT. There were no adverse effects to bit chewing and OCTT was significantly shortened in horses when bit chewing compared to the control group. In summary, bit chewing is a tool to hasten gastrointestinal motility, specifically small intestinal motility, and it may be a safe, inexpensive, and effective treatment to improve small intestinal motility in horses suffering from ileus and further investigation is warranted.

Patients’ recovery after surgery is one of the most important health processes in planned hospital healthcare and has a direct impact on welfare and welfare systems. Therefore, what nurses do in the im­mediate postoperative period is of vital importance. This thesis addresses the question of understanding how nurses work in managing post-operative pain by exploring their daily nursing practices and experiences in responding to the patient in pain within a Thai cultural context. The project applied a qualitative methodology where the local culture and its day-to-day practices of pain management were studied by using observations, focus groups, in-depth interviews and a critical incident interview approach with nurses. Informants were recruited at a public hospital in Bangkok in a surgical ward. In all, 100 hours of observations, 39 interviews and 69 descriptions of critical incidents related to nurse’s pain management were gathered. The data analysis followed the principles of qualitative research. The findings showed that, although there is a clearly defined approach to pain management, the response system followed by the nurses to address patients’ pain is complex and includes much lead time between assessing patients’ pain and the nurses responding to the pain. Furthermore, nurses are caught in what is labeled a patient pa­radigm, where evidence of pain often is double- and triple-checked by scoring and recording signs that are then subject to confirmation by a third party. Underpinning this is a culture of pain management cultivated between the nurses that rests first and foremost on their own experiences and a working/professional culture where nurses offer each other practical help in urgent situations, but seldom discuss event-based strategies together. Nevertheless, when nurses described situations when they were successful in practicing pain management, they considered their own engagement and their availability of time, space and therapeutic options to be important. Keywords: Culture of nursing, Nursing in pain management, Pain assessment, Perception of pain, Pain management, Pain post-operative

Introdução e Objetivos: O cuidado de Enfermagem à pessoa póstransplante cardíaco é um tema pouco investigado no Brasil. Este estudo teve como objetivos: Identificar os cuidados de Enfermagem prestados ao paciente transplantado cardíaco mediato em unidade de terapia intensiva e na unidade de internação de um hospital especializado em cardiologia; apreender os cuidados que o paciente transplantado cardíaco espera receber do enfermeiro em unidade de terapia intensiva e na unidade de internação, na perspectiva do enfermeiro e na perspectiva do paciente. Metodologia: Trata-se de uma pesquisa qualitativa. Foram entrevistados nove enfermeiros e três pacientes que atenderam aos critérios de inclusão, utilizando-se um questionário semiestruturado, cujos dados foram analisados por meio da análise temática, conforme Minayo. O projeto de pesquisa foi aprovado pelo Comitê de Ética em Pesquisa da Escola de Enfermagem da USP e autorizada a coleta de dados pelo Instituto do Coração do HCFMUSP, local onde foi realizada a pesquisa. Resultados: A relação dos enfermeiros e dos pacientes está mediada pelo cuidado, que se expressa por um cuidado realizado que é o cuidado prestado e um cuidado desejado ou um cuidado esperado, que evidenciam as expectativas tanto dos enfermeiros quanto dos sujeitos entrevistados. Da análise temática das entrevistas emergiram três dimensões de cuidados: biológica, emocional e psicossocial. A dimensão biológica é apreendida pelos enfermeiros e pelos pacientes na mesma perspectiva e se refere aos cuidados relativos à administração de medicamentos, à alimentação, aos curativos, à detecção de sinais de rejeição, aos drenos e cateter, à higiene, à prevenção de infecção e à realização de biópsia. A dimensão emocional, na perspectiva dos enfermeiros, está relacionada à revolta com a doença e ao longo tempo de internação, enquanto na dos pacientes se refere ao apoio, à atenção e ao vínculo afetivo. Na dimensão psicossocial os enfermeiros abordam o acolhimento da família e a orientação para o cuidado e os pacientes a orientação para o cuidado. Considerações finais: Os enfermeiros citam e realizam predominantemente cuidados na dimensão biológica e é assim que os pacientes os apreendem e os reproduzem. As outras dimensões do cuidado foram pouco mencionadas, o que sugere a necessidade de ressignificar o cuidado ao transplantado cardíaco de modo a que as condições objetivas de trabalho e as crenças sejam analisadas e investigadas visando à ampliação e à efetivação do cuidado que se deseja ser multidimensional. / Introduction and Objectives: The nursing care to an individual after cardiac transplantation is poorly investigated in Brazil. This study aimed to: Identify the nursing care provided to mediate postoperative cardiac transplant patient in the intensive care unit and inpatient unit of a hospital specialized in cardiology; apprehend the nursing care that heart transplant patient hopes to receive from the nurse in the intensive care unit and inpatient unit, from the perspective of the nurse and the patient. Methods: This was a qualitative research. Was interviewed nine nurses and three patients who fulfilled the inclusion criteria, using a semi-structured questionnaire whose data were analyzed using thematic analysis according to Minayo. The research project was approved by the EEUSP Ethics Commission and the collection of data were authorized by HCFMUSP, where the research was conducted. Results: The ratio of nurses and patients is mediated by nursing care, which is expressed by a realized care that is the provided care and a desired nursing care or expected care, which showed both the expectations of nurses as the interviewed subjects. The thematic analysis of the interviews revealed three dimensions of care: biological, psychosocial and emotional. The biological dimension is apprehended by nurses and patients in the same perspective and refers to the care of the administration of medicines, to food, to bandages, to detection the signs of rejection, to the drains and catheters, to hygiene, to the prevention of infections and to the biopsy. The emotional dimension, from the perspective of nurses, is related to the anger with illness and hospitalization time, while the patients perspective referred to the support, attention and affective link. In psychosocial dimension the nurses approach the hosting of family and the orientation related to the care and the patients referred the orientation related to the care. Final considerations: The nurses cite and realize predominantly biological dimension care and that is how the patients reproduce them. Other dimensions of care were just little mentioned, which suggests the need to resignify the transplanted heart care so that the objective conditions of work and beliefs are examined and investigated aiming to increase and to effective the care that is wanted to be multidimensional.

O homem, ao se defrontar com a cirurgia e a anestesia, tem alterações hormonais provocadas pela ansiedade, moduladas pela avaliação cognitiva deste enfrentamento e acompanhadas de alterações fisiológicas perceptíveis. Os objetivos do presente estudo foram verificar a correlação entre o traço e o estado de ansiedade no período pré-operatóro, e a influência da ansiedade, na resposta do paciente, no período pós-operatório imediato, em sala de recuperação anestésica. A amostra foi composta por 33 pacientes cirúrgicos. Para a coleta de dados foram utilizados, além dos inventários auto-aplicáveis de traço-estado de ansiedade do paciente no período pré-operatório imediato, dois (2) formulários contendo parâmetros de avaliação clínica dos pacientes. Os dados foram coletados nos períodos pré-operatório imediato e pós-operatório imediato. Os resultados mostraram uma correlação estatisticamente significante e positiva entre o traço e o estado de ansiedade, no período pré-operatório ou seja, os pacientes ao enfrentar o ato anestésico cirúrgico, têm seu estado de ansiedade alterado, quando correlacionado ao seu traço de ansiedade e uma correlação não significante entre o estado de ansiedade, no pré-operatório imediato com os parâmetros clínicos avaliados no período pós-operatório imediato,isto é, os pacientes em SRA não apresentaram alterações decorrentes do estado de ansiedade, no período pós-operatório imediato / The man when confronting with the surgery and the anesthesia, has hormonal alterations provoked by the anxiety, modulated by the cognitive evaluation done inthe person that faces this situation and were accompanied by perceptible physiologic alterations. The goals of this study were to verify the influence of trate-anxiety and state -anxiety in psycobiological manifestation of patient in immediate post-operative period. The data were collected using trate and state anxiety inventary, two questionnaires to evaluate clinical conditions of 33 surgical patients. The data were collected in immediate pre-operative and post-operative periods. The results showed a significative correlation between trate and state anxiety in pre-operative period. There was no significative correlation among state anxiety in pre-operative period and clinical conditions in pos-operative period. As conclusion, the correlation was no significative among trate anxiety, state anxiety and psycobiological manifestations in post-operative period