cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7562603.v1
title: Usefulness of endoscopic ultrasound for perianal fistula in Crohn's disease.

description: ABSTRACT Objective: to determine the role of endoscopic ultrasonography (EU) in comparison with nuclear magnetic resonance imaging (MRI) and examination under anesthesia (EUA) in the management of patients with perianal fistulizing Crohn's disease. Methods: we conducted a cross-sectional, observational study with patients with perianal Crohn's disease evaluated at a tertiary center in Curitiba, Paraná, Brazil, from February 2016 to March 2017. All patients underwent EU, MRI and EUA. We evaluated the degree of agreement between the three methods by obtaining the Kappa coefficient. A Kappa value of 0.7 or greater indicated good agreement. We used the Friedman's non-parametric test to compare the number of fistulous paths detected in each modality. We set the level of statistical significance at p&lt;0.05. Results: we included 20 patients. There was agreement between the three exams in 11 patients. The level of Kappa agreement between the three exams was 0.53 (moderate - p&lt;0.001). There was no statistically significant difference in relation to the number of fistulous trajectories detected in the three exams (p=0.641). EU failed to identify a fistulous pathway in three patients; MRI failed in three; and EUA failed in two. Conclusion: EU was comparable to MRI and EUA for the evaluation of perianal fistulizing Crohn's disease, and can be considered a valid exam for preoperative investigation of such patients.
DOI: 10.6084/m9.figshare.7418882
title: Trauma and early blood transfusion: the challenging hemorrhage management in Jehovah's Witnesses.

description: ABSTRACT The management of patients, such as Jehovah's Witnesses, who refuse to receive blood transfusions, is often a medical challenge, not only because of the ethical dilemma, but also because it creates a major obstacle to rapid hemorrhage control in a setting of trauma. This article explores the reasons for this conflict between the physician's duty of care and the respect for the patient's autonomy, and draws a panorama of the main understandings of the Judiciary on the subject. Finally, it is concluded that the manifestation of the patient's will, although free, is not enough to release the doctor from his (her) duty of care. In case of danger to life, the doctor must carry out a blood transfusion, regardless of the patient's consent or the permission of those responsible for the patient.
DOI: 10.6084/m9.figshare.7418882.v1
title: Trauma and early blood transfusion: the challenging hemorrhage management in Jehovah's Witnesses.

description: ABSTRACT The management of patients, such as Jehovah's Witnesses, who refuse to receive blood transfusions, is often a medical challenge, not only because of the ethical dilemma, but also because it creates a major obstacle to rapid hemorrhage control in a setting of trauma. This article explores the reasons for this conflict between the physician's duty of care and the respect for the patient's autonomy, and draws a panorama of the main understandings of the Judiciary on the subject. Finally, it is concluded that the manifestation of the patient's will, although free, is not enough to release the doctor from his (her) duty of care. In case of danger to life, the doctor must carry out a blood transfusion, regardless of the patient's consent or the permission of those responsible for the patient.
DOI: 10.6084/m9.figshare.7562618
title: Ex vivo model with bovine heart: a proposal for training microscopic dissection and vascularmicroanastomoses.

description: ABSTRACT Training is a process that requires patience and constant practice. The execution of microscopic procedures is present in the day-to-day of several surgical specialties, but unfortunately experimental models are not easy to access in our environment. We propose a bovine heart model used by residents and young surgeons in the training of microscopic dissection and microanastomoses. It is described the assembly of this model, which can be performed individually and with accessible material to the surgical departments. Our experience in the preparation of the pieces, as well as tips for the process, are described in the text. The bovine myocardial model can be reproduced in any center with benches and surgical instruments. Low cost, fast preparation, and wide availability of the used tissue are among the advantages of this model. We consider the project useful in the training of surgical residents and young surgeons.
DOI: 10.6084/m9.figshare.7562618.v1
title: Ex vivo model with bovine heart: a proposal for training microscopic dissection and vascularmicroanastomoses.

description: ABSTRACT Training is a process that requires patience and constant practice. The execution of microscopic procedures is present in the day-to-day of several surgical specialties, but unfortunately experimental models are not easy to access in our environment. We propose a bovine heart model used by residents and young surgeons in the training of microscopic dissection and microanastomoses. It is described the assembly of this model, which can be performed individually and with accessible material to the surgical departments. Our experience in the preparation of the pieces, as well as tips for the process, are described in the text. The bovine myocardial model can be reproduced in any center with benches and surgical instruments. Low cost, fast preparation, and wide availability of the used tissue are among the advantages of this model. We consider the project useful in the training of surgical residents and young surgeons.
DOI: 10.6084/m9.figshare.7677344
title: Comparative analysis of glutathione transferase genetic polymorphism, Helicobacter pylori and Epstein-Barr virus between the tumor area and the proximal and distal resection margins of gastric cancer.

description: ABSTRACT Objective: to compare the polymorphism of the Glutathione S-transferase theta 1 (GSTT1) and Glutathione S-transferase mu 1 (GSTM1) genes from the tumor area with the proximal and distal margins of stomach specimens resected from patients with gastric cancer, and to investigate the presence of Epstein-Barr virus (EBV) DNA and Helicobacter pylori. Methods: we prospectively collected tissue specimens from the tumor area and from the proximal and distal resection margins of the stomachs of ten patients with gastric adenocarcinoma who underwent gastrectomy with D2 lymphadenectomy, and submitted these specimens to DNA extraction. We compared the tumor area with the proximal and distal margins of the resected stomachs for polymorphism of GSTT1 and GSTM1 genes and investigated the presence of EBV-DNA and H. pylori. We used the p53 exon 5 gene as an internal control of the multiplex PCR reaction. Results: in one patient, we detected null GSTT1 and GSTM1 genotypes in the tumor area, in contrast to the presence of both genes in the proximal and distal margins. We found EBV-DNA and H. pylori in the tumor area and also in the proximal and distal margins. In another patient, the proximal margin was negative for GSTT1, and EBV-DNA was negative in the distal margin. In three patients, EBV-DNA was negative only in the distal margin. Conclusion: this is the first report where different genotypes, EBV-DNA and H. pylori infection were observed in the same patient, indicating a probable deletion of these genes in response to tumor progression and intratumoral heterogeneity.
DOI: 10.6084/m9.figshare.7677344.v1
title: Comparative analysis of glutathione transferase genetic polymorphism, Helicobacter pylori and Epstein-Barr virus between the tumor area and the proximal and distal resection margins of gastric cancer.

description: ABSTRACT Objective: to compare the polymorphism of the Glutathione S-transferase theta 1 (GSTT1) and Glutathione S-transferase mu 1 (GSTM1) genes from the tumor area with the proximal and distal margins of stomach specimens resected from patients with gastric cancer, and to investigate the presence of Epstein-Barr virus (EBV) DNA and Helicobacter pylori. Methods: we prospectively collected tissue specimens from the tumor area and from the proximal and distal resection margins of the stomachs of ten patients with gastric adenocarcinoma who underwent gastrectomy with D2 lymphadenectomy, and submitted these specimens to DNA extraction. We compared the tumor area with the proximal and distal margins of the resected stomachs for polymorphism of GSTT1 and GSTM1 genes and investigated the presence of EBV-DNA and H. pylori. We used the p53 exon 5 gene as an internal control of the multiplex PCR reaction. Results: in one patient, we detected null GSTT1 and GSTM1 genotypes in the tumor area, in contrast to the presence of both genes in the proximal and distal margins. We found EBV-DNA and H. pylori in the tumor area and also in the proximal and distal margins. In another patient, the proximal margin was negative for GSTT1, and EBV-DNA was negative in the distal margin. In three patients, EBV-DNA was negative only in the distal margin. Conclusion: this is the first report where different genotypes, EBV-DNA and H. pylori infection were observed in the same patient, indicating a probable deletion of these genes in response to tumor progression and intratumoral heterogeneity.
DOI: 10.6084/m9.figshare.19961920.v1
title: Comparative study between conventional camera images and smartphone images for eyelid tumor telediagnosis.

description: ABSTRACT Objective: to compare the accuracy of eyelid tumor diagnosis obtained by evaluating conventional camera images with the ones obtained by evaluating smartphone images. Methods: from January 2016 to July 2017, 36 patients underwent face-to-face external assessments and biomicroscopic examinations to establish clinical diagnoses. The lesions were photographed using Canon PowerShot SX530 HS Digital Camera (16.8 Megapixels) and Samsung GALAXY S4 smartphone camera. All lesions were resected and submitted to anatomopathological examinations. Preoperative images were sent to two specialists in eyelid diseases and then remotely analyzed. Data from in-person diagnoses and telediagnoses were compared with the gold standard of histological diagnosis. Results: the most frequent lesions were basal cell carcinoma (33.3%), actinic keratosis (19.4%), and nevus (13.9%). Kappa coefficient for the diagnosis of malignant lesion showed agreement between the two tele-evaluators in the conventional digital camera images (0.68) and in the smartphone images (0.78). The face-to-face examiner’s accuracy was of 94.4%; the tele-evaluators’ accuracy in the conventional digital camera images was of 83.3% and in the smartphone images varied from 80.6% to 86.1%. Comparing the in-person diagnoses with the telediagnoses (obtained by evaluating conventional digital camera images or smartphone images), there was no significant difference in the hit rates. Conclusion: for eyelid tumor telediagnosis, images obtained using smartphone camera were equivalent to those obtained using conventional digital camera.
DOI: 10.6084/m9.figshare.19961920
title: Comparative study between conventional camera images and smartphone images for eyelid tumor telediagnosis.

description: ABSTRACT Objective: to compare the accuracy of eyelid tumor diagnosis obtained by evaluating conventional camera images with the ones obtained by evaluating smartphone images. Methods: from January 2016 to July 2017, 36 patients underwent face-to-face external assessments and biomicroscopic examinations to establish clinical diagnoses. The lesions were photographed using Canon PowerShot SX530 HS Digital Camera (16.8 Megapixels) and Samsung GALAXY S4 smartphone camera. All lesions were resected and submitted to anatomopathological examinations. Preoperative images were sent to two specialists in eyelid diseases and then remotely analyzed. Data from in-person diagnoses and telediagnoses were compared with the gold standard of histological diagnosis. Results: the most frequent lesions were basal cell carcinoma (33.3%), actinic keratosis (19.4%), and nevus (13.9%). Kappa coefficient for the diagnosis of malignant lesion showed agreement between the two tele-evaluators in the conventional digital camera images (0.68) and in the smartphone images (0.78). The face-to-face examiner’s accuracy was of 94.4%; the tele-evaluators’ accuracy in the conventional digital camera images was of 83.3% and in the smartphone images varied from 80.6% to 86.1%. Comparing the in-person diagnoses with the telediagnoses (obtained by evaluating conventional digital camera images or smartphone images), there was no significant difference in the hit rates. Conclusion: for eyelid tumor telediagnosis, images obtained using smartphone camera were equivalent to those obtained using conventional digital camera.
DOI: 10.6084/m9.figshare.19961922
title: Differentiation of myofibroblasts in wounds after topical use of metronidazole: an experimental study.

description: ABSTRACT Objective: to assess the effects of topical administration of metronidazole on fibroblast differentiation and on wound contraction during experimental secondary intention wound healing in rats. Methods: we submitted 108 rats to a circular wound on the back, 2cm in diameter, and divided them into six groups: control group, with application of saline solution on the wound and five experimental groups, divided according to the concentration of metronidazole solution used (4%, 6%, 8%, 10% and 12%). We changed the dressings daily throughout the trial period, which comprised three stages of analysis: three, seven and 14 days. We evaluated wound contraction by digital planimetry, and identified myofibroblasts and protomyofibroblasts using CD34 and α-SMA immunohistochemistry techniques. Results: wound contraction was not different between the experimental and the control groups. Protomyofibroblasts were significantly more numerous at seven days (p=0.022) in the 4%, 6% and 8% metronidazole groups. After 14 days, in the same groups, myofibroblasts predominated significantly (p=0.01). Conclusion: the topical administration of metronidazole solution in skin wounds healing by secondary intention was able to improve the differentiation of fibroblasts. The contraction phase of wound healing remained unchanged, without significant reduction of the contraction evaluated by digital planimetry. These results can be used in favor of the wound healing process.
DOI: 10.6084/m9.figshare.19961922.v1
title: Differentiation of myofibroblasts in wounds after topical use of metronidazole: an experimental study.

description: ABSTRACT Objective: to assess the effects of topical administration of metronidazole on fibroblast differentiation and on wound contraction during experimental secondary intention wound healing in rats. Methods: we submitted 108 rats to a circular wound on the back, 2cm in diameter, and divided them into six groups: control group, with application of saline solution on the wound and five experimental groups, divided according to the concentration of metronidazole solution used (4%, 6%, 8%, 10% and 12%). We changed the dressings daily throughout the trial period, which comprised three stages of analysis: three, seven and 14 days. We evaluated wound contraction by digital planimetry, and identified myofibroblasts and protomyofibroblasts using CD34 and α-SMA immunohistochemistry techniques. Results: wound contraction was not different between the experimental and the control groups. Protomyofibroblasts were significantly more numerous at seven days (p=0.022) in the 4%, 6% and 8% metronidazole groups. After 14 days, in the same groups, myofibroblasts predominated significantly (p=0.01). Conclusion: the topical administration of metronidazole solution in skin wounds healing by secondary intention was able to improve the differentiation of fibroblasts. The contraction phase of wound healing remained unchanged, without significant reduction of the contraction evaluated by digital planimetry. These results can be used in favor of the wound healing process.
DOI: 10.6084/m9.figshare.7898297.v1
title: Computerized Axial Tomography in patients with severe abdominal trauma: is it a justifiable risk?

description: ABSTRACT Objective: to evaluate the evolution of severe abdominal trauma patients, for whom the massive transfusion protocol was triggered, and who were submitted to Computed Axial Tomography (CAT) in the emergency room (ER), in order to verify the patient's prognosis and the diagnostic efficiency of CAT in this scenario. Methods: retrospective, longitudinal and observational study performed at a referral center for trauma care in Curitiba, Parana, Brazil. We selected 60 severe abdominal trauma patients who had massive transfusion protocol activation and divided them into two groups: patients who underwent CAT at ER and patients who did not. We verified the diagnostic accuracy of CAT-scan examination and compared the number of deaths, hospitalization time, and transfused blood components in both groups. Results: considering the 60 patients, 66.67% received red blood cells at ER; 33.3% underwent CAT on admission due to hemodynamic improvement, and 66.7% did not perform the examination at the entrance. The percentage of deaths was 35% in both groups. Considering the two groups, the difference between the mean lengths of hospital stay was not statistically significant, as well as the difference between the mean numbers of transfused red blood cells. In the group that underwent CAT, 45% did not require exploratory laparotomy. Conclusion: CAT could be rapidly performed in patients with hemodynamic instability on arrival at ER, sparing some patients from an unnecessary exploratory laparotomy and not significantly influencing mortality.
DOI: 10.6084/m9.figshare.7898297
title: Computerized Axial Tomography in patients with severe abdominal trauma: is it a justifiable risk?

description: ABSTRACT Objective: to evaluate the evolution of severe abdominal trauma patients, for whom the massive transfusion protocol was triggered, and who were submitted to Computed Axial Tomography (CAT) in the emergency room (ER), in order to verify the patient's prognosis and the diagnostic efficiency of CAT in this scenario. Methods: retrospective, longitudinal and observational study performed at a referral center for trauma care in Curitiba, Parana, Brazil. We selected 60 severe abdominal trauma patients who had massive transfusion protocol activation and divided them into two groups: patients who underwent CAT at ER and patients who did not. We verified the diagnostic accuracy of CAT-scan examination and compared the number of deaths, hospitalization time, and transfused blood components in both groups. Results: considering the 60 patients, 66.67% received red blood cells at ER; 33.3% underwent CAT on admission due to hemodynamic improvement, and 66.7% did not perform the examination at the entrance. The percentage of deaths was 35% in both groups. Considering the two groups, the difference between the mean lengths of hospital stay was not statistically significant, as well as the difference between the mean numbers of transfused red blood cells. In the group that underwent CAT, 45% did not require exploratory laparotomy. Conclusion: CAT could be rapidly performed in patients with hemodynamic instability on arrival at ER, sparing some patients from an unnecessary exploratory laparotomy and not significantly influencing mortality.
DOI: 10.6084/m9.figshare.7898291
title: Psychological aspects and quality of life in Medical Residency.

description: ABSTRACT Objective: to evaluate the perception of quality of life among residents in the first year of Medical Residency compared to the one among residents in other years of training, given the importance of this issue in health. Methods: a comparative and cross-sectional analytical study performed from February to April 2016 in a reference tertiary trauma hospital in Brazil. Resident physicians were voluntarily submitted to an online questionnaire on quality of life (called WHOQOL-BREF), validated by World Health Organization (WHO). They were divided into two groups: first year of residency (R1) and other years of residency. Results: ninety-seven residents of several medical specialties answered the questionnaire. Of these, 59 were men and 38 were women. The mean age was 27.7 years. First-year residents accounted for 49.5% of the interviewees. Overall, quality of life was considered regular in both groups. In relation to psychological domain, there was a significant difference between the R1 group (with worse scores in this domain) and the non-R1 group (p&lt;0.0000001). Conclusion: first-year residents’ quality of life is worse than the one of the residents from other years, having a significant variation of positive feelings, learning capacity, memory, thought and concentration, self-esteem, body image and appearance, and negative feelings.
DOI: 10.6084/m9.figshare.7898291.v1
title: Psychological aspects and quality of life in Medical Residency.

description: ABSTRACT Objective: to evaluate the perception of quality of life among residents in the first year of Medical Residency compared to the one among residents in other years of training, given the importance of this issue in health. Methods: a comparative and cross-sectional analytical study performed from February to April 2016 in a reference tertiary trauma hospital in Brazil. Resident physicians were voluntarily submitted to an online questionnaire on quality of life (called WHOQOL-BREF), validated by World Health Organization (WHO). They were divided into two groups: first year of residency (R1) and other years of residency. Results: ninety-seven residents of several medical specialties answered the questionnaire. Of these, 59 were men and 38 were women. The mean age was 27.7 years. First-year residents accounted for 49.5% of the interviewees. Overall, quality of life was considered regular in both groups. In relation to psychological domain, there was a significant difference between the R1 group (with worse scores in this domain) and the non-R1 group (p&lt;0.0000001). Conclusion: first-year residents’ quality of life is worse than the one of the residents from other years, having a significant variation of positive feelings, learning capacity, memory, thought and concentration, self-esteem, body image and appearance, and negative feelings.
DOI: 10.6084/m9.figshare.8031647
title: Primary liver graft dysfunction and non-function: integrative literature review.

description: ABSTRACT Avoiding deaths in the waiting list for an organ is no longer the only focus of the transplant teams attention. Research and care in clinical practice has been increasingly focused on post transplant graft survival and functioning. In the present work, we performed an integrative literature review to identify the terminology used about liver graft dysfunction and non-function, as well as to investigate the incidence and risk factors of these clinical events. We chosen articles written in Portuguese, English and Spanish between 2012 and 2016, based on CINAHL, MEDLINE, Cochrane, LILACS, BDENF, IBECS, EMBASE and Web of Science. We selected 14 studies, in which we identified the incidence of hepatic graft dysfunction ranging from 7% to 27%. The terminology used to describe this clinical event was initial malfunction, graft hypofunction, marginal function or delay in function. The primary non-function of the liver graft was found in 1.4% to 8.4% of the patients, and the terminology used to describe the event was early dysfunction or graft loss. The risk factors found are related to donor, recipient, graft and transplant logistics variables. We conclude that knowledge of the different terminologies employed in the literature, related to dysfunction and primary non- function incidence, and of their risk factors are fundamental to qualify the control of the events, aiming to improve patients’ survival after liver transplantation.