A 3D reconstruction of pancreas development in the human embryos during embryonic period (Carnegie stages 15–23)

Aims  

The goal in this paper was to rebuild a three dimensional (3D) reconstruction of the dorsal and ventral pancreatic buds, in the human embryos, at Carnegie stages 15–23.     

Anal Canal Strictures After Ileal Pouch-Anal Anastomosis

PURPOSE: This study was designed to define the different types of strictures, the factors favoring their occurrence, and their treatment after ileal pouch-anal anastomosis. METHODS: Between January 1981 and June 1996, 1,884 ileal pouch-anal anastomoses were constructed at the Mayo Clinic in Rochester, Minnesota. Data were collected prospectively and included age, gender, type of underlying diseases (chronic ulcerative colitis vs. familial adenomatous polyposis), proctologic antecedents, technique of anastomosis, intraoperative difficulties, and postsurgical complications. Strictures were categorized as nonfibrotic and fibrotic on the basis of the presence or absence of a fibrotic segment at the anal canal anastomosis that was responsible for pouch-outlet obstruction requiring at least one dilation. RESULTS: Strictures occurred in 213 patients (11.2 percent; 11 percent for chronic ulcerative colitis and 12 percent for familial adenomatous polyposis; P = not significant). Strictures were nonfibrotic in 86.4 percent of patients and fibrotic in 13.6 percent. A greater number of strictures were observed after a handsewn anastomosis (12 percent) than after a stapled anastomosis (4 percent; P = 0.03). Intraoperative technical difficulties were associated with 13 percent of all strictures regardless of the type of stricture (fibrotic, 7.5 percent; nonfibrotic, 14 percent; P = 0.4). Postoperative complications such as abscess, fistula, and pouch retraction were found in 13 percent of cases and were primarily associated with fibrotic strictures. Treatment included dilation, which was successful in 95 percent of nonfibrotic strictures but in only 45 percent of fibrotic strictures (P = 0.0001). Surgical treatment was required in 25 strictures (12 percent), including excision of the strictured segment with mucosal advancement flap (5 patients), excision of the pouch with permanent ileostomy (9 patients), or redo pouch (3 patients). With one exception, all excised pouches were associated with other perianastomotic complications, such as abscess, fistula, and pouch retraction. The remaining eight patients had other surgical procedures because of abscess (n = 3), division of an obstructive bridge (n = 2), and débridement and curettage of a fistula (n = 3) with dilation for associated strictures. CONCLUSIONS: Strictures were observed in 11.2 percent of the patients in this study. Nonfibrotic strictures responded well to anal dilation, whereas fibrotic strictures were more commonly associated with intraoperative or postoperative complications, often necessitated surgical therapy to salvage pouch function, and were eventually responsible for pouch failure in nine patients.     

Advance care planning by proxy for residents of long-term care facilities who lack decision-making capacity

This report examines whether long-term care facilities should implement policies and procedures to support advance care planning by proxy for residents who lack decision-making capacity. The report focuses on advance care planning in the Department of Veterans Affairs. After reviewing clinical, legal, and ethical perspectives, the authors conclude that advance proxy planning is ethically sound and can improve patient care. However, because experience with advance proxy planning is still fairly limited, the authors do not recommend that a particular standardized approach be mandated at the national level. Instead, local facilities are advised to develop their own policies and then evaluate their effect. The report contains specific recommendations for the advance proxy planning process.     

Is low tie ligation truly reproducible in colorectal cancer surgery? Anatomical study of the inferior mesenteric artery division branches

Aim

Curative surgery is the standard treatment for colorectal cancer. The ligation level of the inferior mesenteric artery (IMA) is still debated, as neither low tie (LT) nor high tie ligation (HT) has shown any benefit on the patients’ overall survival. We examined whether LT is standardizable and easily reproducible from an anatomical point of view.

Method

One hundred CT angiographies of healthy patients were analysed for the anatomy of the IMA and its division branches: left colic artery (LCA), sigmoid arteries trunk and superior rectal artery. Data analysed comprised angles between the IMA and the aorta, diameters of the IMA and its branches, repartition of the branches and distances between the origin of the branches and the origin of the IMA.

Results

IMA anatomy showed no variation. In contrast, its division branches showed important variability in terms of distance to the origin and repartition: in 19.9 % of the patients, the IMA directly splits into three branches, and in 17.6 % of the patients, the LCA originated at more than 5 cm from the origin of the IMA. These frequent variations led us to assume that the standardization of LT is very difficult in a context of neoplasm, where the quality of the lymphadenectomy is fundamental.

Conclusion

The division branches of the IMA are extremely subject to interindividual variations, making it difficult if not impossible to reproduce identically a surgical procedure based on their anatomy. HT appears to us as the only relevant procedure for colorectal cancer.     

Efficacy of rituximab in the treatment of rheumatoid arthritis. Influence of serologic status, coprescription of methotrexate and prior TNF-alpha inhibitors exposure

PurposeRituximab has been shown to be efficient in the treatment of rheumatoid arthritis (RA) when associated with methotrexate (MTX). The purpose of this study was to evaluate the response to this treatment in daily practice in the following three specific situations: rheumatoid factor (RF)-negative RA patients, rituximab monotherapy patients and TNFα inhibitors-naive patients.MethodsThis retrospective observational study is an exploratory analysis of the response to rituximab. One thousand milligrams (1000 mg) of rituximab was administered twice at an interval of 15 days. Therapeutic response was determined at mean 20 weeks after the infusion on the basis of DAS28 scores and EULAR response criteria.ResultsOne hundred and eight patients were included in the study and the responses of 95 of these were evaluated. Of the latter, 75% were EULAR responders. There was no significant difference in EULAR response between patients treated with rituximab and MTX (73.8%) and those who had received rituximab alone (79.3%). Similarly, there was no difference in the number of EULAR responders between patients who had received TNF inhibitor beforehand (74.1%) and those who had not (78.6%). However, interval to retreatment was significantly shorter in TNF inhibitor-naive patients. Lastly, a significant difference (P = 0.02) in EULAR response rate was observed between RF-positive patients (84.8%) and RF-negative patients (57.9%). Interval to retreatment was also significantly shorter in RF-negative patients.ConclusionIn our experience, while our RTX efficacy findings appear to be consistent with the results of comparable controlled trials, whether or not in association with MTX, or with prior administration of one or several TNF inhibitors, RF-positive RA patients exhibited a higher EULAR response rate than RF-negative RA patients.     

Therapists' perceptions about making a difference in parent-child relationships in early intervention occupational therapy services.

OBJECTIVE: The purpose of this study was to better understand occupational therapists' experiences of making a difference in parent-child relationships. METHOD: In this qualitative, instrumental case study, occupational therapists working in early intervention were asked to reflect on and describe occasions in which they believed that they made a real difference in parent-child relationships. The primary investigator interviewed nine experienced pediatric occupational therapists. RESULTS: All nine therapists highly valued the parent-child relationship and focused on these relationships in therapy. Eight themes emerged that described the therapists' practice insights and methods by which the therapists facilitated the parent-child relationship. CONCLUSION: The occupational therapists in this study reflected insights that resonate with the literature regarding the role of the parent-child relationship in the development of children. The authors raise the question about the adequacy of instruction at the pre-service level that prepares therapists to both assess and facilitate the parent-child relationship in early intervention.