No Association of Blood Alcohol Concentration on Burn Patient Outcomes

INTRODUCTION

Alcohol abuse is common among burn patients. Burn patients under the influence of alcohol are at risk for developing organ failure, prolonged hospital duration, and increased intensive care unit (ICU) resources. Our study aims to analyze the association between presenting alcohol levels and the outcomes of burn patients.

METHODS

A retrospective analysis of admitted burn patients was performed from 2016 to 2021. Patients were divided into two groups based on blood alcohol content (BAC), low (<80), and high (≥80) mg/dL. Data included demographics, comorbidities, and outcomes. Univariate analyses were performed, and a P value <0.05 was significant.

RESULTS

A total of 197 patients were included (32.5% females, mean age 47.2 ± 15.2, 26.9% smokers, 28.4% illegal drug abuse, and 56.3% no comorbidities). Mortality was 7.6%, morbidity 20.8%, 39.1% required burn ICU admission, and 25.9% were intubated. When comparing BAC groups, we found no differences in demographics, comorbidities, inhalational injury incidence, carbon monoxide level, intubation, or burn ICU admission rates. The high-BAC group had longer ventilator days (high BAC 16.7 ± 19.3 versus low BAC 7.5 ± 9.1, P = 0.026) and longer stays in the ICU (18.6 ± 21.8 versus 10.7 ± 15.4, P = 0.075). The low-BAC group had more 3rd-degree burn percentage (5.0 ± 15.3 versus 15.4 ± 27.5, P = 0.024). Both morbidity and in-house mortality rates were similar for both groups (23.8% versus 16.0%, P = 0.192, and 6.6% versus 9.3%, P = 0.476, respectively).

CONCLUSIONS

Burn patients with higher BAC had significantly longer mechanical ventilator days. However, higher alcohol concentrations had no association with regard to mortality, overall length of stay, or complication rates.

Just Do It: Participation in Structured Online Curricula Reliably Improves Low ABSITE Scores

OBJECTIVE

We hypothesized residents enrolled in an Accelerated Clinical Education in Surgery (ACES) program would improve their scores to above the 30^th percentile. We analyzed which components of ACES correlated with improvement.

DESIGN AND SETTING

A retrospective review of three academic cycles (2018-2021) at an academic general surgery residency.

PARTICIPANTS

Residents scoring ≤30^th percentile on the ABSITE were enrolled in ACES. Baseline demographics including STEP scores were collected. ACES included: (1) SCORE and DeckerMed assignments (2) Weekly faculty review sessions and (3) Monthly meeting with assigned mentor. Data were analyzed by Student's t-test, one-way ANOVA and Fisher's exact test.

RESULTS

Twenty-six surgical residents enrolled in ACES. Compared to residents not in ACES, there was no significant difference females (15 vs. 15; p = 0.19) and STEP 2 scores (241 vs. 246; p = 0.06). Residents in ACES had significantly lower STEP 1 (225 vs. 237; p < 0.001) and STEP 3 (212 vs. 223; p < 0.001) scores. Demographics of ACES residents who subsequently scored >30^th percentile were similar to those who didn't, except for STEP 3 scores (216 vs. 204; p = 0.008). For residents in ACES, the completion of assignments between July and January was significantly higher for those who subsequently achieved an ABSITE score >30^th percentile: TWIS, 77% vs. 53% (p = 0.022), Decker WC, 80% vs. 49% (p = 0.009) and Decker MR, 53% vs. 29% (p = 0.016). Completion of an online practice exam prior to ABSITE also correlated with score >30^th percentile (57% vs. 13%, p = 0.007). There was also no correlation between the number of faculty review sessions and ABSITE (11.5 vs.11.9, p = 0.931).

CONCLUSIONS

Participation in a structured online program of reading and quizzes was durably effective in improving ABSITE scores >30^th percentile. Completion of online assignments, rather than scores on practice tests or review sessions, appeared to be the most important factor for success.

Akt2 negatively regulates assembly of the POSH-MLK-JNK signaling complex

We demonstrate that POSH, a scaffold for the JNK signaling pathway, binds to Akt2. A POSH mutant that is unable to bind Akt2 (POSH W489A) exhibits enhanced-binding to MLK3, and this increase in binding is accompanied by increased activation of the JNK signaling pathway. In addition, we show that the association of MLK3 with POSH is increased upon inhibition of the endogenous phosphatidylinositol 3-kinase/Akt signaling pathway. Thus, the assembly of an active JNK signaling complex by POSH is negatively regulated by Akt2. Further, the level of Akt-phosphorylated MLK3 is reduced in cells expressing the Akt2 binding domain of POSH, which acts as a dominant interfering protein. Taken together, our results support a model in which Akt2 binds to a POSH-MLK-MKK-JNK complex and phosphorylates MLK3; phosphorylation of MLK3 by Akt2 results in the disassembly of the JNK complex bound to POSH and down-regulation of the JNK signaling pathway.

Spinal cord motoneurons express p75NGFR and p145trkB mRNA in amyotrophic lateral sclerosis

In the present study, in situ hybridization was used to examine the expression of nerve growth factor (NGF) receptor (p75NGFR), trk (p140trk) and trkB (p145trkB) mRNA in spinal cord sections from patients with amyotrophic lateral sclerosis (ALS). We report that the expression of p75NGFR and p145trkB mRNA is elevated in alpha motoneurons in ALS sections. However, p140trk mRNA was not expressed in either ALS or control sections.

Homozygous protein C deficiency in a newborn. Clinicopathologic correlation

A rare case of homozygous protein C deficiency occurred in a newborn. The patient presented with purpura fulminans in the first few hours after birth and showed multiple hemorrhagic lesions on computed tomography of the brain at 5 days of age. Neurologic symptoms developed at two weeks and the patient died at 37 weeks. His protein C level was less than 5%. Autopsy revealed thrombosis of the dural sinuses, multiple cortical infarcts, intraparenchymal hemorrhages, and hydrocephalus. The pathologic findings are correlated with the neurologic deficits and previously documented cases are reviewed.

ALS and pet exposure

To examine animal exposure in ALS patients, a case-control study was undertaken on 40 ALS patients and 40 closely matched controls. Exposure to pets of any kind and to small dogs in the period from birth until 10 years before onset of ALS symptoms was significantly increased. Affected men showed a trend toward increased exposure to neurologically ill pets, but there was no significant difference when male and female cases were grouped. No differences between ALS cases and controls were observed in exposure to any other single animal species. There may be a link between ALS and exposure to house pets.