Burn Injuries Resulting From Methamphetamine and Honey Oil Explosions: A Retrospective Cohort Study

Abstract A high incidence of honey oil and methamphetamine production has led to an increase in burn victims presenting to this regional burn center in California. This study aims to compare patient outcomes resulting from burn injuries associated with honey oil and methamphetamine production. This is a retrospective cohort study using the regional burn registry to identify patients with burn injuries related to honey oil production or methamphetamine purification explosions from January 1, 2008 to December 31, 2017. Patient demographics and clinical outcomes data were abstracted from the burn registry and medical records. A total of 91 patients were included in the final analysis and 59.3% (n = 54) were related to honey oil injury. There was no statistically significant difference between honey oil and methamphetamine burn injuries in regard to clinical outcomes, including mortality (1.9% vs 8.1%, P = .1588), third-degree burn (47.2% vs 59.5%, P = .2508), mechanical ventilator usage (50% vs 69.4%, P = .0714), median hospital length of stay (LOS; 10 vs 11 days, P = .5308), ICU LOS (10 vs 11 days, P = .1903), total burn surface area (26.5% vs 28.3%, P = .8313), and hospital charge (median of US$85,561 vs US$139,028, P = .7215). Honey oil burn injuries are associated with similar hospital LOS, similar ICU LOS, similar total burn surface area, and present a costly public health concern. With the recent legalization of marijuana in California, commercial production of honey oil in addition to increasing education about the risks of illicit honey oil production may alleviate associated risks.

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Comparison of outcomes of ORIF versus bidirectional tractor and arthroscopically assisted CRIF in the treatment of lateral tibial plateau fractures: a retrospective cohort study

Journal of Orthopaedic Surgery and Research ◽

10.1186/s13018-021-02447-w ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Xiangtian Deng ◽

Hongzhi Hu ◽

Yiran Zhang ◽

Weijian Liu ◽

Qingcheng Song ◽

...

Keyword(s):

Cohort Study ◽

Internal Fixation ◽

Clinical Outcomes ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

Tibial Plateau ◽

Clinical Score ◽

Lateral Tibial Plateau ◽

Significant Difference

Abstract Background Lateral tibial plateau fractures (TPFs) are often treated with conventional open reduction and internal fixation (ORIF) through standard anterolateral sub-meniscal arthrotomy. There has been increasing support for “bidirectional rapid redactor” device-assisted closed reduction and internal fixation (CRIF) for treating TPFs. The aim of the present study is to compare the clinical and radiological outcomes between CRIF and ORIF procedures. Methods We performed a retrospective cohort study of 55 lateral TPF patients (Schatzker types I–III) who accepted surgical treatment at our trauma level 1 center between January 2016 and January 2018. They were divided into the CRIF group (32 patients) and the ORIF group (23 patients) based upon the different surgical protocols. The patients’ clinical outcome analysis was evaluated by using the Knee Society Score (KSS) and Rasmussen’s clinical score. For radiological assessment, changes in tibial plateau width (TPW), articular depression depth (ADD), medial proximal tibial angle (MPTA), and posterior tibial slope angle (PTSA) were evaluated using radiographs and computed tomography (CT) scan. Results The CRIF group had a mean follow-up of 28.9 months, and the ORIF group had a mean follow-up of 30.7 months (p>0.05). Furthermore, there was no statistically significant difference in terms of age, gender, injury mechanism, follow-up time, time interval from injury to surgery, and Schatzker classification in the two groups. With respect to the clinical outcomes including the KSS score and Rasmussen’s clinical score, there was also no significant difference (p>0.05). Nevertheless, the CRIF group had lower intra-operative blood loss, shorter hospitalization days, and better range of movement of the knee joint than the ORIF group (p<0.05). Furthermore, CRIF had better radiological results when compared to the ORIF group using Rasmussen’s radiological score (p<0.05), although no significant difference was observed in TPW, ADD, MPTA, and PTSA between the two groups (p>0.05). Conclusion The present study showed that CRIF could achieve comparable clinical outcomes and better radiological results for treating lateral TPFs as compared with conventional ORIF.

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PAIN INTENSITY AND FUNCTIONALITY AFTER PERCUTANEOUS ENDOSCOPIC DISCECTOMY: A RETROSPECTIVE COHORT STUDY

Coluna/Columna ◽

10.1590/s1808-185120212003247876 ◽

2021 ◽

Vol 20 (3) ◽

pp. 161-164

Author(s):

ROSALINO GUARESCHI JUNIOR ◽

CLAUDIO A. G. CASTILHO ◽

GUSTAVO GONÇALVES TERRA ◽

SÉRGIO ZYLBERSZTEJN ◽

SAMUEL CONRAD ◽

...

Keyword(s):

Cohort Study ◽

Postoperative Complications ◽

Pain Intensity ◽

Functional Status ◽

Clinical Outcomes ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

Lumbar Disc ◽

Significant Difference ◽

Endoscopic Discectomy

ABSTRACT Objectives To evaluate pain intensity and functional status before and 30 days following percutaneous lumbar endoscopic discectomy. Methods A retrospective cohort study that included patients who underwent percutaneous endoscopic discectomy from January 2019 to October 2020 at the Irmandade Santa Casa de Misericórdia Hospital, in Porto Alegre. The data were collected from the electronic medical records of the patients by two independent physicians. Clinical outcomes were assessed using visual analog scale (VAS) and Oswestry Disability Index (ODI) scores. Results Forty-six patients with a mean age of 52.6 ± 15.8 years, 27 of whom (58.7%) were male, were evaluated. Regarding clinical outcomes, a statistically significant improvement was observed in the comparison between the pre- and 30-day postoperative VAS and ODI scores, with no significant difference in relation to sex. No peri- or postoperative complications were observed. All patients successfully completed surgery and were discharged after recovery from anesthesia. Conclusion There was a significant improvement in pain and functional status 30 days after percutaneous endoscopic discectomy performed to correct lumbar disc herniation, with no difference in relation to sex. In addition, no peri- or postoperative complications were observed. Future studies, with longer follow-up times, comparing clinical outcomes from the various techniques of percutaneous endoscopic discectomy are necessary. Level of evidence III; Retrospective comparative study.

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Clinical outcomes of patients with breast cancer relapsing after (neo)adjuvant trastuzumab and receiving trastuzumab rechallenge or lapatinib-based therapy: a multicentre retrospective cohort study

ESMO Open ◽

10.1136/esmoopen-2020-000719 ◽

2020 ◽

Vol 5 (4) ◽

pp. e000719 ◽

Cited By ~ 1

Author(s):

Eva Blondeaux ◽

Arlindo R Ferreira ◽

Francesca Poggio ◽

Fabio Puglisi ◽

Claudia Bighin ◽

...

Keyword(s):

Breast Cancer ◽

Cohort Study ◽

Brain Metastasis ◽

Clinical Outcomes ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

First Line ◽

Her2 Positive ◽

Adjuvant Trastuzumab ◽

Significant Difference

BackgroundIn the prepertuzumab era, we evaluated the clinical outcomes of patients with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer who underwent first-line trastuzumab-based or lapatinib-based therapy according to prior exposure to (neo)adjuvant trastuzumab.Materials and methodsIn this multicentre retrospective cohort study conducted in 14 Italian centres of the Gruppo Italiano Mammella, consecutive patients undergoing first-line trastuzumab or lapatinib-based therapy were included. Analyses were performed according to the type of first-line therapy for metastatic disease (trastuzumab or lapatinib). Dichotomous clinical outcomes were analysed using logistic regression and time-to-event outcomes using Cox proportional hazard models controlling for relevant demographic, clinicopathological and therapy characteristics.ResultsOut of 450 patients included in the study, 416 (92%) received trastuzumab and 34 (7.5%) lapatinib. As compared with the trastuzumab cohort, more patients in the lapatinib cohort had a trastuzumab-free interval <1 month (37% vs 13.9%; p=0.017) and brain metastasis as first site of relapse (38.2% vs 9.4%; p<0.001). Among the 128 patients who relapsed after prior (neo)adjuvant trastuzumab, 101 (78.9%) received first-line trastuzumab and 27 (21.1%) first-line lapatinib. The following outcomes were observed with first-line lapatinib or trastuzumab, respectively: overall response rate 45.5% vs 61.3% (p=0.184), clinical benefit rate 68.2% vs 72.5% (p=0.691), median progression-free survival (PFS) 11.4 vs 12.0 months (p=0.814) and median overall survival (OS) 34.7 vs 48.2 months (p=0.722). In patients with brain metastasis as first site of relapse, median PFS was 12.2 vs 9.9 months (p=0.093) and median OS 33.7 vs 28.5 months (p=0.280), respectively.ConclusionsIn patients with HER2-positive breast cancer relapsing after prior (neo)adjuvant trastuzumab, first-line treatment with trastuzumab or lapatinib was not associated with a significant difference in the clinical outcomes. A non-significant trend favouring the use of lapatinib was observed in patients with brain metastasis as the first site of relapse.

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Nonunion Rates in Hind- and Midfoot Arthrodesis in Current, Ex-, and Nonsmokers

Foot & Ankle International ◽

10.1177/1071100720971269 ◽

2020 ◽

pp. 107110072097126

Author(s):

Jack Allport ◽

Jayasree Ramaskandhan ◽

Malik S. Siddique

Keyword(s):

Risk Factor ◽

Cohort Study ◽

Relative Risk ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

Smoking Status ◽

Time Frame ◽

Modifiable Risk Factor ◽

Level Of Evidence ◽

Significant Difference

Background: Nonunion rates in hind or midfoot arthrodesis have been reported as high as 41%. The most notable and readily modifiable risk factor that has been identified is smoking. In 2018, 14.4% of the UK population were active smokers. We examined the effect of smoking status on union rates for a large cohort of patients undergoing hind- or midfoot arthrodesis. Methods: In total, 381 consecutive primary joint arthrodeses were identified from a single surgeon’s logbook (analysis performed on a per joint basis, with a triple fusion reported as 3 separate joints). Patients were divided based on self-reported smoking status. Primary outcome was clinical union. Delayed union, infection, and the need for ultrasound bone stimulation were secondary outcomes. Results: Smoking prevalence was 14.0%, and 32.2% were ex-smokers. Groups were comparable for sex, diabetes, and body mass index. Smokers were younger and had fewer comorbidities. Nonunion rates were higher in smokers (relative risk, 5.81; 95% CI, 2.54-13.29; P < .001) with no statistically significant difference between ex-smokers and nonsmokers. Smokers had higher rates of infection ( P = .05) and bone stimulator use ( P < .001). Among smokers, there was a trend toward slower union with heavier smoking ( P = .004). Conclusion: This large retrospective cohort study confirmed previous evidence that smoking has a considerable negative effect on union in arthrodesis. The 5.81 relative risk in a modifiable risk factor is extremely high. Arthrodesis surgery should be undertaken with extreme caution in smokers. Our study shows that after cessation of smoking, the risk returns to normal, but we were unable to quantify the time frame. Level of Evidence: Level III, retrospective cohort study.

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387. Markers for Mortality in COVID-19 Patients with Atrial Fibrillation or Flutter

Open Forum Infectious Diseases ◽

10.1093/ofid/ofaa439.582 ◽

2020 ◽

Vol 7 (Supplement_1) ◽

pp. S262-S262

Author(s):

Kok Hoe Chan ◽

Bhavik Patel ◽

Iyad Farouji ◽

Addi Suleiman ◽

Jihad Slim

Keyword(s):

Atrial Fibrillation ◽

Logistic Regression ◽

Cohort Study ◽

Retrospective Cohort Study ◽

Retrospective Cohort ◽

Prognostic Markers ◽

Univariate Analysis ◽

Laboratory Data ◽

Significant Difference ◽

New Onset

Abstract Background Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection can lead to many different cardiovascular complications, we were interested in studying prognostic markers in patients with atrial fibrillation/flutter (A. Fib/Flutter). Methods A retrospective cohort study of patients with confirmed COVID-19 and either with existing or new onset A. Fib/Flutter who were admitted to our hospital between March 15 and May 20, 2020. Demographic, outcome and laboratory data were extracted from the electronic medical record and compared between survivors and non-survivors. Univariate and multivariate logistic regression were employed to identify the prognostic markers associated with mortality in patients with A. Fib/Flutter Results The total number of confirmed COVID-19 patients during the study period was 350; 37 of them had existing or new onset A. Fib/Flutter. Twenty one (57%) expired, and 16 (43%) were discharged alive. The median age was 72 years old, ranged from 19 to 100 years old. Comorbidities were present in 33 (89%) patients, with hypertension (82%) being the most common, followed by diabetes (46%) and coronary artery disease (30%). New onset of atrial fibrillation was identified in 23 patients (70%), of whom 13 (57%) expired; 29 patients (78%) presented with atrial fibrillation with rapid ventricular response, and 2 patients (5%) with atrial flutter. Mechanical ventilation was required for 8 patients, of whom 6 expired. In univariate analysis, we found a significant difference in baseline ferritin (p=0.04), LDH (p=0.02), neutrophil-lymphocyte ratio (NLR) (p=0.05), neutrophil-monocyte ratio (NMR) (p=0.03) and platelet (p=0.015) between survivors and non-survivors. With multivariable logistic regression analysis, the only value that had an odds of survival was a low NLR (odds ratio 0.74; 95% confidence interval 0.53–0.93). Conclusion This retrospective cohort study of hospitalized patients with COVID-19 demonstrated an association of increase NLR as risk factors for death in COVID-19 patients with A. Fib/Flutter. A high NLR has been associated with increased incidence, severity and risk for stroke in atrial fibrillation patients but to our knowledge, we are first to demonstrate the utilization in mortality predictions in COVID-19 patients with A. Fib/Flutter. Disclosures Jihad Slim, MD, Abbvie (Speaker’s Bureau)Gilead (Speaker’s Bureau)Jansen (Speaker’s Bureau)Merck (Speaker’s Bureau)ViiV (Speaker’s Bureau)

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The change of coagulation profile in two-staged arthroplasty for periprosthetic joint infection patients: a retrospective cohort study

Journal of Orthopaedic Surgery and Research ◽

10.1186/s13018-021-02477-4 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Hao Li ◽

Rui Li ◽

L. L. Li ◽

Wei Chai ◽

Chi Xu ◽

...

Keyword(s):

Cohort Study ◽

Periprosthetic Joint Infection ◽

Retrospective Cohort Study ◽

Persistent Infection ◽

Retrospective Cohort ◽

Joint Infection ◽

Diagnostic Study ◽

Level Of Evidence ◽

Coagulation Profile ◽

Significant Difference

Abstract Aims Periprosthetic joint infection (PJI) is a serious complication of total joint arthroplasty. We performed a retrospective cohort study to evaluate (1) the change of coagulation profile in two-staged arthroplasty patients and (2) the relationship between coagulation profile and the outcomes of reimplantation. Method Between January 2011 and December 2018, a total of 202 PJI patients who were operated on with two-staged arthroplasty were included in this study initially. This study continued for 2 years and the corresponding medical records were scrutinized to establish the diagnosis of PJI based on the 2014 MSIS criteria. The coagulation profile was recorded at two designed points, (1) preresection and (2) preimplantation. The difference of coagulation profile between preresection and preimplantation was evaluated. Receiver operating characteristic curves (ROC) were used to evaluate the diagnostic efficiency of the coagulation profile and change of coagulation profile for predicting persistent infection before reimplantation. Results The levels of APTT, INR, platelet count, PT, TT, and plasma fibrinogen before spacer implantation were significantly higher than before reimplantation. No significant difference was detected in the levels of D-dimer, ACT, and AT3 between the two groups. The AUC of the combined coagulation profile and the change of combined coagulation profile for predicting persistent infection before reimplantation was 0.667 (95% CI 0.511, 0.823) and 0.667 (95% CI 0.526, 0.808), respectively. Conclusion The coagulation profile before preresection is different from before preimplantation in two-staged arthroplasty and the coagulation markers may play a role in predicting infection eradication before reimplantation when two-stage arthroplasty is performed. Level of evidence Level III, diagnostic study.

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