ABSTRACT Background: Over the last decade, a significant area of Zagros forests, especially in Ilam Province, west of Iran, has been affected by the phenomenon of oak decline. The most basic item for fighting the decline of these forests is to know site suitability, the parameters affecting it, determining the criteria affecting the decline and preparing a map of the decline potential of these forests. In this study, the efficiency of Maxent on preparing site suitability map of Dalab and Bankol and the most important criteria affecting P.Oak decline was investigated by TOPSIS. The integrated valuation of ecosystem services and tradeoffs (InVEST) was used to prepare a zoning map of decline potential of P.Oak site. Validation of maps was done with receiver operating characteristic curve (ROC) and field visits. Results: The results showed that pc-forest, distance from rivers and temperature are the most important criteria of the distribution of P.Oak. In addition, many parts of both sites were found to lack site suitability. The results of TOPSIS showed that the most important criteria of P.Oak decline are socio-economic criteria. Conclusions: Decline potential in Bankol was much higher and the pressure caused by stressful criteria was higher in this site. The results showed 6 general stresses of land use change, grazing, pests, charcoal disease, fires and tourism in two sites. Dalab has shown a better condition in terms of decline potential. The reason for this is the operation of conservation management in this site. The obtained results show the efficiency of the used methods.

ABSTRACT Background: During the past decade, the phenomenon of Oak decline has affected valuable Zagros Oak Forests in western Iran. Quercus brantii as the most important tree species of these forests has been damaged more than any other species. Many factors are involved in this phenomenon. The purpose of this study was to identify areas with high potential for decline and determine the most important factors affecting it. In this study, using multi-criteria evaluation methods based on the Geographic Information System (GIS) Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method and fuzzy logic, the map of decline potential of two selected stands (Dalab and Cheghasabz) in Ilam Province was prepared to reveal the high-risk areas of decline. The analytical hierarchical process was used to determine the weight of the factors. Results: The results showed that both selected stands had decline potential. However, the Dalab stand at 25% and the Cheghasabz, at approximately 60% of the stand has an extreme potential for decline. Rainfall factors, pests, and diseases also have the greatest effect on Oak forest decline. Conclusion: Due to socio-economic problems such as land use change, fire, tourism, grazing, and pruning, the Cheghasabz is more prone to decline than the Dalab, which was a forest reserve. The multi-criteria evaluation model used in the study can be a guide in identifying high-risk areas in other parts of the Zagros forests. The large area of critical areas in these two regions reveals the need for planning to implement support operations to reconstruct damaged ecosystems.

Resumo Introdução: A colectomia minimamente invasiva vem sendo realizada há alguns anos em muitos pacientes no mundo inteiro, apresentando menos intercorrências do que a abordagem aberta. Neste estudo, os autores relatam sua experiência com uma modificação da colectomia total laparoscópica e extração de espécime em orifício natural (NOSE) pelo reto, usando uma cobertura plástica pela primeira vez. Métodos e materiais: Este foi um estudo experimental sobre uma nova técnica de colectomia total com uma pequena modificação. A colectomia total foi realizada com base na abordagem laparoscópica de sete portas. O reto foi poupado. O cólon foi então retirado pelo canal anal usando uma cobertura plástica. Resultados: Treze pacientes foram submetidos a colectomia total laparoscópica por remoção do espécime pelo reto. A idade média dos pacientes foi de 42,23 ± 8,15 anos. A duração média da operação foi de 130 ± 32,4 minutos. Para todos os pacientes, a internação pós-operatória transcorreu sem intercorrências. Discussão: Foi comprovado que a colectomia total laparoscópica apresenta benefícios superiores à abordagem aberta. Na técnica NOSE, o cólon é removido mais rapidamente do canal anal, sem nenhuma intercorrência. Essa técnica pode causar menos dor e remove as complicações associadas a uma incisão na pele para remover o espécime. Além disso, devido ao baixo preço de uma cobertura plástica comum, ela pode ser usada no lugar de outras técnicas para remover o espécime pelo reto.

Abstract Introduction: Minimally invasive colectomy has been performed for some years for many patients worldwide without much complications compared to the open approach. In this study we explained our experience regarding a modification in laparoscopic total colectomy and removing the specimen with Natural Orifice Specimen Extraction (NOSE) through rectum using a plastic cover for the first time. Methods and material: This was an experimental study on a new technique of total colectomy with a small modification. Total colectomy was performed based on 7 port laparoscopic approach. Rectum was sparred. Colon was then taken out through the anal canal using a plastic cover. Results: Thirteen patients underwent laparoscopic total colectomy by removal of the specimen through rectum. Mean age of patients was 42.23 ± 8.15 years. Mean duration of operation was 130 ± 32.4 min. All patients had an uneventful postoperative hospitalization. Discussion: Laparoscopic total colectomy has been proven to have superior benefits than the open approach. In NOSE technique, colon is removed from the anal canal without any complication or consuming much time. This technique might have less pain and removes the complications associated with an incision on the skin to remove the specimen. Also, due to low price of a usual plastic cover, it can be used instead of other techniques to remove the specimen through the rectum.

Resumo Introdução A lavagem peritoneal com antibiótico ou com soro fisiológico normal é benéfica para reduzir o risco de dor ou de infecção durante cirurgias laparoscópicas, além de poder ser aplicada também em colectomias laparoscópicas. Neste estudo, comparamos os efeitos da lavagem com solução antibiótica (gentamicina-clindamicina) e da lavagem com solução salina normal em pacientes submetidos à colectomia laparoscópica. Método Neste Ensaio Clínico Randomizado (ECR), controlado e duplo-cego, 40 pacientes submetidos à colectomia laparoscópica foram divididos em dois grupos (20 pacientes em cada grupo) para receberem antibiótico ou solução salina normal. Dor pós-operatória, necessidade de analgésico, contagem de leucócitos, nível de proteína C-reativa, tempo de internação e infecção da ferida foram comparados entre os grupos em 30 dias. Resultados De forma significativa, o Grupo Antibiótico apresentou menos dor que o Grupo Salina Normal (p < 0,05) em 3, 6, 12 e 24 horas após a cirurgia. O nível de proteína C-reativa, a contagem de leucócitos, o uso de analgésicos e o tempo de internação foram significativamente menores no Grupo Antibiótico. Porém, não houve diferença em relação à infecção da ferida ou intra-abdominal entre os dois grupos. Conclusão O uso da lavagem peritoneal com gentamicina-clindamicina ajuda a reduzir a dor, a necessidade de analgésicos e o tempo de internação de pacientes submetidos à colectomia laparoscópica.

Abstract Introduction Peritoneal antibiotic or normal saline lavage is seen to be beneficial in order to reduce the pain or infection risk through laparoscopic surgeries. It can also be applied for laparoscopic colectomy surgeries. In this study, we have compared the effects of antibiotic solution lavage (gentamycin-clindamycin) with normal saline lavage in patients undergoing laparoscopic colectomy surgery. Method In this double-blind Randomized Controlled Trial (RCT), 40 patients undergoing laparoscopic colectomy surgery were divided into antibiotic and normal saline lavage groups (20 patients in each group). Post-operational pain, need for painkiller, white blood cells count, C-reactive protein level, duration of hospitalization and wound infection were compared in 30 days between the groups. Results Antibiotic lavage group had significantly less pain than the normal saline group (p < 0.05) through 3, 6, 12 and 24 h after surgery. C-reactive protein level, white blood cells count, painkiller use, and hospitalization duration were significantly lower in antibiotic group. However, there was no difference regarding wound or intra-abdominal infection between the both groups. Conclusion Using gentamicin-clindamycin peritonea lavage helps patients undergoing laparoscopic colectomy surgery in pain reduction, need for painkillers and hospitalization duration.

RESUMO Introdução: O índice de posição anal é calculado com uma fórmula simples, usada para determinar a posição exata do ânus no períneo. Atualmente, esse índice é usado apenas em neonatos e bebês. O deslocamento anterior do ânus é uma causa comum de constipação crônica. No presente estudo, avaliou-se a associação entre o índice de posição anal e as características dos pacientes, constipação crônica, prolapso uterino, prolapso do reto e número de partos. Material e Métodos: Este estudo transversal, realizado em 2018, incluiu 63 adultos admitidos na clínica de cirurgia colorretal. As distâncias ânus-frênulo dos lábios, cóccix-frênulo, cóccix-escroto e ânus-escroto foram medidas com uma fita métrica simples. O SPSS for Windows (v. 18) foi usado para análise dos dados. O teste t de Student para variáveis independentes, o coeficiente de correlação e o teste ANOVA foram usados. Resultados: Sessenta e três pacientes com idade entre 22 a 75 anos foram recrutados; 48 eram do sexo masculino (76,2%) e 15 do sexo feminino (23,8%). Destes, 29 (46%) apresentavam constipação crônica. A média ± DP do índice, com intervalo de confiança de 95%, foi de 0,5325 ± 0,11861 no sexo masculino e 0,4510 ± 0,16803 no sexo feminino. Além disso, a média do índice foi de 0,4616 ± 0,14007 em pacientes com constipação crônica e 0,5570 ± 0,11559 em pacientes sem constipação. Discussão: O índice de posição anal pode ser um fator prognóstico para predizer constipação crônica e alterações da anatomia do assoalho pélvico em pacientes adultos e pediátricos.

ABSTRACT Introduction: Anal position index is calculated with a simple formula, which is used to determine the exact position of anus in perineum. This index is currently used only in neonates and infants. Anteriorly displacement of anus is a common cause of chronic constipation. Here we assessed the association between anal position index with patients’ characteristics, chronic constipation, rectum prolapse uterine prolapse, and number of delivery. Material and methods: This was a cross-sectional study performed in 2018 on 63 adult admitted to colorectal surgery clinic. Anus-forchuette, coccyx-forchuette and coccyx-scrotum and anal-scrotum were measure by a simple meter tape. Statistical Package for the Social Sciences (SPSS for Windows, ver. 18) was used for data analysis. Independent Student's t-test, correlation coefficient and ANOVA were used. Results: Sixty-three patients within age range of 22-75 years old were recruited. 48 were male (76.2%) and 15 females (23.8%). Twenty-nine (46%) had chronic constipation. The mean ± SD of the index with confidence interval of 95% was 0.5325 ± 0.11861 in males and 0.4510 ± 0.16803 in females. Also the mean of the index was 0.4616 ± 0.14007 in patients with chronic constipation and 0.5570 ± 0.11559 in patients without constipation. Discussion: Anal position index can be a prognostic factor to predict chronic constipation and pelvic floor anatomy disturbance in adults as well as pediatrics.