Singerhouse1575

Moreover, the possible sensing mechanisms are further explored at length.In this study, we synthesized, characterized the magnetic graphene oxide coated with polyvinyl alcohol (PVA@MGO), and used it as an adsorbent for the magnetic solid-phase extraction (MSPE) of organophosphorus pesticides (OPPs) residue in the apple juice and environmental water samples followed by gas chromatography-mass spectrometry (GC-MS) analysis. Effective factors on the extraction efficiency, including the adsorbent dosage, desorption conditions, sample pH, extraction and desorption time, and ionic strength were optimized. The dynamic range of the MSPE-GC-MS method was obtained in the concentration range of 0.07-500 ng mL-1 OPPs with the limits of detection (LODs) in the range of 20-80 pg mL-1. Also, the intra- and inter-day precisions were determined to be in the range of 3.3-5.7% and 5.9-8.2%. The relative recoveries of pesticides for spiked real water samples and apple juice were in the range of 94.5 and 107.1%, with relative standard deviations between 2.6 and 6.5%. These results propose that the PVA@MGO is appropriate for simultaneous determination and high throughput analysis of OPPs residues.

General surgery residents often feel unprepared to perform pediatric surgery procedures since case volume and experience may be low. Previously, we successfully implemented a simulation-based training (SBT) module for placement of a silastic silo for gastroschisis. Therefore, we designed a single institution pilot study to assess whether SBT for placement of a percutaneous peritoneal drain for perforated necrotizing enterocolitis (NEC) was feasible and lead to skill acquisition and increased confidence.

Our newly created NEC module within our pediatric surgery SBT curriculum for general surgery residents was used. Residents completed two simulation sessions three months apart with confidence testing before and after each session. Skill acquisition and performance were assessed using a standardized case scenario and procedure checklist. Changes in residents' confidence and performance were determined using Wilcoxon Signed-Rank Tests.

Nine post-graduate-year three general surgery residents completed this curriculum. Following completion, residents reported improved confidence completing each step of the procedure initially (p=0.005) and at 3 months (p=0.008) with improved technical scores (p=0.011). The number of residents deemed proficient significantly improved (p=0.031).

Implementation of SBT module for perforated NEC was feasible and improved residents' confidence and proficiency completing the procedure.

Implementation of SBT module for perforated NEC was feasible and improved residents' confidence and proficiency completing the procedure.

Abusive head trauma (AHT) is a leading cause of morbidity and mortality among young children. We aimed to evaluate the long-term impact of AHT.

Using administrative claims from 2000-2018, children <3 years old with documented AHT who had follow-up through ages 5 and 11 years were identified. The primary outcome was incidence of neurodevelopmental disability and the secondary outcome was the effect of age at time of AHT on long-term outcomes.

1,165 children were identified with follow-up through age 5; 358 also had follow-up through age 11. The incidence of neurodevelopmental disability was 68.0% (792/1165) at 5 years of age and 81.6% (292/358) at 11 years of age. The incidence of disability significantly increased for the 358 children followed from 5 to 11 years old (+14.3 percentage points, p<0.0001). Children <1 year old at the time of AHT were more likely to develop disabilities when compared to 2 year olds.

AHT is associated with significant long-term disability by age 5 and the incidence increased by age 11 years. There is an association between age at time of AHT and long-term outcomes. Efforts to improve comprehensive follow-up as children continue to age is important.

IV.

IV.

Tumour stage is an important prognostic factor in head and neck tumours. DNA Repair chemical Many tumours are diagnosed in advanced stages despite almost universal healthcare and their being symptomatic. This paper seeks to determine the diagnostic delay in head and neck tumours in our health department, to analyse factors associated with delay and if it is associated with diagnosis in advanced stages.

Retrospective study of 137 patients with head and neck cancer diagnosed from 2016-2018. Patient delay, delay in primary health care, delay in secondary health care, diagnostic delay and possible associated factors (smoking, location, stage, …) were evaluated.

Many patients (44.5%) were diagnosed in advanced stages. The median patient delay was 30 days. The median referral to otorhinolaryngology was 3.5 days. If the referral was made by another specialist (p=.008), the patients were under previous treatment (P=.000) and the tumours were in initial stages (P=.038) this delay was greater. The median from the first visit to otorhinolaryngology was 15 days, higher in regular referrals (43%) (P=.000). The median diagnostic delay was 12 days, higher in surgical biopsies (P=.000). The median professional delay was 58.5 days and total delay was 118.5 days.

Many head and neck tumours are diagnosed in advanced stages. A relationship was not found between diagnosis in advanced stages and diagnostic delay. However, steps must be taken to reduce these excessive delays.

Many head and neck tumours are diagnosed in advanced stages. A relationship was not found between diagnosis in advanced stages and diagnostic delay. However, steps must be taken to reduce these excessive delays.

Functional endoscopic sinus surgery might lead to dangerous complications. Studying and analysing preoperative CT scans provides surgeons with a precise knowledge of their patient's anatomy, thus reducing the risk of potential complications. Checklists highlighting key anatomical areas have been published and proven useful. However, none of these are widely accepted or systematically used in daily practice.

In this paper, the rhinology group of the Young-Otolaryngologists of the International Federations of Otorhinolaryngological Societies (YO-IFOS) aim to create and validate a new checklist designed to be fast and user friendly for daily practice.

Two CT sinonasal scans were selected as test cases. Forty otolaryngologists were selected from five tertiary referral hospitals. It was a cross-sectional study; each participant was their own control. All participants completed a questionnaire after the analysis of both CT scans to prevent learning bias. The evaluation included ten items critical in endoscopic sinus surgery according to previous publications.