A call for clarity: a scoping review of predictors of poor outcome after emergency abdominal surgery for inflammatory bowel disease.

AIM: The medical management of inflammatory bowel disease (IBD) is rapidly progressing; however, many patients with the disease still require surgery. Often this is done as an emergency. Initiatives such as the National Emergency Laparotomy Audit have shown how evidence-based emergency surgery improves outcomes for the patient. The aim of this scoping review is to describe the current evidence base on risk stratification in emergency abdominal surgery for IBD. METHODS: A literature search, abstract and full paper screening resulted in 17 articles representing 63 472 patients from seven countries. RESULTS: It is likely that age, the American Society of Anesthesiologists grade, comorbidity and organ dysfunction play a similar role in risk stratification in IBD patients as in other emergency abdominal surgery cohorts. However, the reporting of what is considered an IBD emergency is variable. Six studies include clear definitions of emergency in our study. The range of what is considered an emergency is within 12 h of admission to any time within an unplanned admission. CONCLUSION: To have data driven, evidence-based emergency surgical practice in IBD we need consistency of reporting, including the definitions of emergency and urgency. Core descriptor sets in IBD would be valuable.

Device and method for nonlinear ultrasonic measurements on highly irradiated 304 stainless steel specimens in a hot cell environment.

This paper reports on the first successful nonlinear ultrasonic measurement on highly irradiated specimens in a hot cell environment. The specimens are ANSI 304 stainless steel specimens for which the microstructure characterization and ultrasonic velocity measurement have been previously conducted. The critical part of this research is the development of an automatic fixture device that can facilitate repeatable loading and unloading to place the contact ultrasonic transducers on and off of the specimen. The key step to achieve high measurement repeatability is a careful adjustment of the support-spring constants such that the contact force at the interface between the transducer face and specimen surface is as uniform and constant as possible. The longitudinal ultrasonic velocities, which are obtained as a by-product of the nonlinear ultrasonic measurements, show a level of random variation in terms of (max-min)/average (%) below 0.2%, and the velocity distributions and magnitudes are in good agreement with those from the previous work. The ultrasonic nonlinearity parameters show the level of random variation below 4.7%, which is extremely low, considering that the measurements are conducted in a hot cell environment. The nonlinearity parameters also show a strong dependence on the measurement location in a particular specimen with respect to the radiation source, demonstrating a possible inhomogeneous microstructure evolution in these 12.7 mm thick specimens. This research demonstrates the feasibility of making nonlinear ultrasonic measurement on highly radioactive materials and/or in a highly radioactive environment using the device and procedure developed.

Compartment syndrome as a complication of the Hauser procedure.

A compartment syndrome developed in eleven patients who had undergone the Hauser procedure. The residual disabilities ranged from mild weakness and contracture of the muscles in the anterior compartment of the leg to complete muscle necrosis necessitating above-the knee amputation in two patients. Dissections of ten cadaver limbs demonstrated that the anterior tibial recurrent vessels have numberous leash-like branches that terminate along the lateral border of the tibial tubercle. When these vessels are sectioned they retract laterally and distally under the fascia and within the muscles of the anterior compartment. It is postulated that continued postoperative bleeding from these vessels after the Hauser procedure may lead to an ischemic compartment syndrome in the leg.