Acquisition of robotic surgical skills does not require laparoscopic training: a randomized controlled trial.

BACKGROUND: Robotic surgery is a valid option for minimally invasive surgery in most surgical specialties. However, the need to master laparoscopy is questionable before starting specific training in robotic surgery. We compared the development of basic robotic surgery skills between individuals randomized to train in conventional, laparoscopic, or robotic skills. METHODS: We conducted a single-centered, single-blinded randomized trial. Medical students were randomly assigned to 20 h of conventional, laparoscopic, or robotic surgical training. Students with previous surgical experience were excluded. Participants were evaluated pre- and post-training on the dV-Trainer robotic surgical simulator with the following exercises: Camera Targeting 1, Peg Board 1, Ring and Rail 1, and Ring and Rail 2. RESULTS: Sixty-six students were randomly assigned to each training group. Eight individuals did not complete the study (2 in the conventional group, 3 in the laparoscopic group, and 3 in the robotic group). All groups demonstrated significant improvement in the composite score and in each task following the training period (p < 0.001). No differences were seen between the conventional and laparoscopic groups in the composite score or individual tasks. The robotic group showed greater improvement in number of errors, economy of motion, workspace utilization, and time for completion compared to the other groups. The laparoscopic group showed improved camera manipulation skills compared to the conventional group, while the conventional group showed improved errors and economy of motion compared to the laparoscopic group. CONCLUSION: There was no difference in the acquisition of basic robotic surgical skills between individuals trained in basic conventional or laparoscopic surgical skills. We believe surgeons mastery in laparoscopy is not needed before initiating robotic surgical training. However, basic principles of laparoscopy remain applicable to robotic surgery. Future studies should compare transferability of conventional and laparoscopic training to robotic skills in the operating room.

Factors predictive of the successful treatment of choledocholithiasis.

BACKGROUND: Choledocholithiasis is a common complication of cholelithiasis, occurring in up to 18% of patients. Multiple treatments are often performed during the course of the management of choledocholithiasis, sometimes without success. Our study was performed identify the factors predictive of the success of treatment with retrograde endoscopic cholangiopancreatography (ERCP). METHODS: This was a retrospective, case-control study that used data from a biliary disease database at Hospital de Clínicas de Porto Alegre (HCPA). Demographic, clinical, radiological and procedure-related variables were compared between patients with successful biliary clearance after one ERCP procedure (Group 1) and those with unsuccessful biliary clearance after one ERCP procedure (Group 2). RESULTS: Three hundred twenty patients were included in Group 1, while 254 were included in Group 2. Multivariate analysis showed that older age, previous biliary exploration, elevated serum total bilirubin, choledocholithiasis above the level of the confluence of the hepatic ducts, stones retained in the cystic duct or Mirizzi syndrome, dilatation of the bile duct diagnosed during ERCP, and the need for suprapapillary opening were independently associated with the failure of the first ERCP to achieve bile duct clearance. The performance of imaging at the same institution prior to the procedure and the retention of stones in the duodenal papilla were associated with the success of endoscopic treatment. CONCLUSIONS: The variables identified in this study, when considered in conjunction with the results of previously published studies, can be used to guide the choice of therapeutic methods for patients with choledocholithiasis in the future, given the significant difference in outcomes between the two groups. In the future, a prospective study should be performed to determine whether the same factors are predictive of the success of other methods of treatment (surgical or percutaneous).

Sarcina ventriculi a rare pathogen.

Sarcina ventriculi is a gram-positive bacterium, able to survive in extreme low pH environment. It's first description dates from 1842, by John Goodsir. Since then, just a few cases have been reported. In veterinary medicine, especially in ruminants, it causes bloating, vomiting, gastric perforation and death of the animal. It is commonly associated with delayed gastric emptying or obstruction to gastric outlet, although it's pathogenicity in humans is not fully understood. We report two cases with identification of the bacteria in gastric specimens stained with hematoxylin-eosin staining, in different clinical settings. The first patient is a young female patient, presenting cardiac arrest and death after gastric perforation and the second patient an adult male presenting with gastric adenocarcinoma, treated with partial gastrectomy followed by adjuvant chemoradiation. In our literature review, we identified forty-five cases reporting Sarcina ventriculi appearance, with a sudden increase since 2010.

Sarcina ventriculi a rare pathogen

Sarcina ventriculi is a gram-positive bacterium, able to survive in extreme low pH environment. It's first description dates from 1842, by John Goodsir. Since then, just a few cases have been reported. In veterinary medicine, especially in ruminants, it causes bloating, vomiting, gastric perforation and death of the animal. It is commonly associated with delayed gastric emptying or obstruction to gastric outlet, although it's pathogenicity in humans is not fully understood. We report two cases with identification of the bacteria in gastric specimens stained with hematoxylin-eosin staining, in different clinical settings. The first patient is a young female patient, presenting cardiac arrest and death after gastric perforation and the second patient an adult male presenting with gastric adenocarcinoma, treated with partial gastrectomy followed by adjuvant chemoradiation. In our literature review, we identified forty-five cases reporting Sarcina ventriculi appearance, with a sudden increase since 2010.