THE APPENDICITIS INFLAMMATORY RESPONSE SCORE FOR ACUTE APPENDICITIS: IS IT IMPORTANT FOR EARLY DIAGNOSIS?

BACKGROUND: The use of Appendicitis Inflammatory Response clinical score in patients with suspected acute appendicitis makes the diagnosis more objective and accurate. AIMS: The aim of this study was to prospectively compare two groups with suspected acute appendicitis, analyzing the number of imaging tests requested, waiting time in the emergency department, until definition of conduct, as well as the sensitivity and specificity of this diagnostic method. METHODS: This is a prospective randomized study comparing 55 patients submitted to clinical-radiological diagnosis according to the routine of the service (control group), with another 55 patients submitted to the Appendicitis Inflammatory Response score flowchart (intervention group). RESULTS: Waiting time for defining the intervention group's conduct was 1.5 h shorter than the control group (p=0.02). Computed tomography was performed in 42 patients in the control group, compared with 25 in the intervention group (p=0.001). The impact of the flowchart based on the Appendicitis Inflammatory Response score of the cases compared to the control group was the reduction of appendectomies with a normal-appearing appendix from 5 to 1 and an increase in the exclusion of appendicitis diagnoses. The use of the Appendicitis Inflammatory Response score resulted in a diagnostic specificity of 92%, compared to 29% in the control group. CONCLUSIONS: The use of the Appendicitis Inflammatory Response score reduced the waiting time for the diagnosis of acute appendicitis, decreased the number of imaging tests, and increased diagnostic specificity of the disease.

The appendicitis inflammatory response score for acute appendicitis: is it important for early diagnosis? / Escore de reposta inflamatória à apendicite aguda: é importante para o diagnóstico precoce?

ABSTRACT - BACKGROUND: The use of Appendicitis Inflammatory Response clinical score in patients with suspected acute appendicitis makes the diagnosis more objective and accurate. AIMS: The aim of this study was to prospectively compare two groups with suspected acute appendicitis, analyzing the number of imaging tests requested, waiting time in the emergency department, until definition of conduct, as well as the sensitivity and specificity of this diagnostic method. METHODS: This is a prospective randomized study comparing 55 patients submitted to clinical-radiological diagnosis according to the routine of the service (control group), with another 55 patients submitted to the Appendicitis Inflammatory Response score flowchart (intervention group). RESULTS: Waiting time for defining the intervention group's conduct was 1.5 h shorter than the control group (p=0.02). Computed tomography was performed in 42 patients in the control group, compared with 25 in the intervention group (p=0.001). The impact of the flowchart based on the Appendicitis Inflammatory Response score of the cases compared to the control group was the reduction of appendectomies with a normal-appearing appendix from 5 to 1 and an increase in the exclusion of appendicitis diagnoses. The use of the Appendicitis Inflammatory Response score resulted in a diagnostic specificity of 92%, compared to 29% in the control group. CONCLUSIONS: The use of the Appendicitis Inflammatory Response score reduced the waiting time for the diagnosis of acute appendicitis, decreased the number of imaging tests, and increased diagnostic specificity of the disease.

RESUMO - RACIONAL: A utilização do escore clínico Appendicitis Inflammatory Response em pacientes com suspeita de apendicite aguda torna o diagnóstico mais objetivo e preciso. OBJETIVOS: Comparar prospectivamente dois grupos com suspeita de apendicite aguda, analisando o número de exames de imagem solicitados, o tempo de espera no Pronto-Socorro, até a definição da conduta, bem como a sensibilidade e especificidade desse método diagnóstico. MÉTODOS: Estudo prospectivo randomizado comparando 55 pacientes submetidos ao diagnóstico clínico-radiológico de acordo com a rotina do Serviço (grupo controle), com outros 55 pacientes submetidos ao fluxograma do escore Appendicitis Inflammatory Response (grupo intervenção). RESULTADOS: O tempo de espera para definir a conduta do grupo intervenção foi 1,5 hora menor do que o grupo controle (p=0,02). A tomografia computadorizada foi realizada em 42 pacientes do grupo controle, em comparação com 25 do grupo intervenção (p=0,001). O impacto do fluxograma baseado no escore Appendicitis Inflammatory Response dos casos em relação ao grupo controle foi a redução de apendicectomias com apêndice de aparência normal de 5 para 1 e um aumento na exclusão de diagnósticos de apendicite. O uso do escore Appendicitis Inflammatory Response resultou em especificidade diagnóstica de 92%, comparado a 29% no grupo controle. CONCLUSÕES: A utilização do escore Appendicitis Inflammatory Response reduziu o tempo de espera para o diagnóstico de apendicite aguda, diminuiu o número de exames de imagem e aumentou a especificidade diagnóstica da doença.

Dynamic Electroporation Model Evaluation on Rabbit Tissues.

Biological electroporation is a process of opening pores in the cell membrane when exposed to intense electric fields. This work provides results for validation of a dynamic model of electroporation on biological tissues. Computational simulations were carried out and results for the electrical current through the tissue and increase of the tissue temperature were compared to experimental results. Two calculation methods were used: Equivalent Circuit Method and Finite Element Method. With Equivalent Circuit Method the dielectric dispersion present in biological tissues was included. Liver, kidney and heart of rabbit were used in the experiments. Voltage pulse protocols and voltage ramps were applied using stainless steel needles electrodes. There is good agreement between the simulated and experimental results with mean errors below 15%, with the simulated results within the experimental standard deviation. Only for the protocol with fundamental frequency of 50 kHz, the simulation performed by the Finite Element Method using a commercial software did not correctly represent the current, with errors reaching 50%. The justification for the error found is due to the dielectric dispersion that was not included in this simulator.

Interleukin 28B-related polymorphisms: a pathway for understanding hepatitis C virus infection?

AIM: To analyze the role of rs12979860 and rs8099917 polymorphisms in hepatitis C virus (HCV) genotype 1 infection of Brazilians. METHODS: A total of 145 adult patients diagnosed with genotype 1 chronic hepatitis C (CHC) who had completed a 48-wk regimen of pegylated-interferon α-2a or -2b plus ribavirin combination therapy were recruited from six large urban healthcare centers and 199 healthy blood donors (controls) from a single site between January 2010 and January 2012. Data on the patients' response to treatment was collected. Polymerase chain reaction-restriction fragment length polymorphism genotyping of the interleukin (IL)28B gene fragment encompassing the single nucleotide polymorphisms (SNPs) rs12979860 (C/T) and rs8099917 (T/G) was carried out for 79 of the CHC patients and 199 of the controls. Bi-directional amplicon sequencing of the two SNPs was carried out for the remaining 66 CHC patients. RESULTS: SNP rs12979860 genotyping was successful in 99.5% of the controls and 97.2% of the CHC patients, whereas the SNP rs8099917 genotyping was successful in 95.5% of the controls and 100% of the CHC patients. The genotype and allele distributions for both rs12979860 and rs8099917 were significantly different between the control and CHC patient groups, with significantly higher genotype frequencies of CC and TT in the controls (P = 0.037 and 0.046, respectively) and of TT and GG in the CHC patients (P = 0.0009 and 0.0001, respectively). Analysis of the CHC patients who achieved sustained virological response (SVR) to treatment (n = 55) indicated that the rs12979860 C allele and CC genotype were predictors of SVR (P = 0.02). No significant correlation was found between rs8099917 genotypes and treatment response, but carriers of the T allele showed significantly higher rates of SVR (P = 0.02). Linkage disequilibrium analysis of the group that achieved SVR showed a significant association between rs12979860 and rs8099917 (P = 0.07). CONCLUSION: The higher allele frequency of rs12979860 C and rs8099917 T observed in non-HCV-infected individuals may indicate a potential protective role for these IL28B-related polymorphisms.

Recurrent and de novo non-alcoholic steatohepatitis following orthotopic liver transplantation

Non-alcoholic steatohepatitis was coined in 1980 to describe pathological and clinical features of non-alcoholic disease associated with pathological features, commonly seen in alcoholic-liver disease itself. It is now a well-recognised cause of end-stage liver disease and a rare cause of orthotopic liver transplantation. A small number of cases with recurrent non-alcoholic steatohepatitis following liver transplantation have been reported, however de novo non-alcoholic steatohepatitis in the liver allograft is not well recognised. AIMS/RESULTS: We report four cases of non-alcoholic steatohepatitis following orthotopic liver transplantation describing the factors related with the pathology. The recurrence of fatty infiltration occurred within 21 months and transition from mild steatosis to non-alcoholic steatohepatitis and early fibrosis was observed within 60 months post transplant in all four patients. All four cases had association with one or multiples risk factors (obesity, type 2 diabetes and/or hyperlipidemia). CONCLUSIONS: Management of this risk factors may play a therapeutic role in the prevention of recurrent and de novo non-alcoholic steatohepatitis following orthotopic liver transplantation

Incidência de enteroparasitas em crianças de Joinville (SC) / Incidence of intestinal parasitosis in children from Joinville (SC)

Para determinar a incidência de enteroparasitoses em crianças de Joinville (SC) foram estudadas 156 crianças matriculadas em um colégio de regime aberto e 31 crianças matriculadas em regime de semi-internato. Realizou-se exame parasitológico de fezes pelos métodos de Faust et al. e Hoffman, Pons & Janner para cada criança. Determinou-se que no regime aberto 39 por cento das crianças estavam infectadas, contra 74 por cento do regime de semi-internato; quanto ao sexo 50 por cento dos meninos contra 31 por cento das meninas estavam infectados. No regime aberto a maior incidência foi de Giardia lamblia (41 por cento), já no semi-internato foi de Entamoeba coli. Os resultados demonstram as más condiçoes de saneamento básico que nos atinge, e a relaçao entre o convívio e a disseminaçao dos parasitas.