Carotid Plaque-RADS: A Novel Stroke Risk Classification System

BACKGROUND

Carotid artery atherosclerosis is highly prevalent in the general population and is a well-established risk factor for acute ischemic stroke. Although the morphological characteristics of vulnerable plaques are well recognized, there is a lack of consensus in reporting and interpreting carotid plaque features.

OBJECTIVES

The aim of this paper is to establish a consistent and comprehensive approach for imaging and reporting carotid plaque by introducing the Plaque-RADS (Reporting and Data System) score.

METHODS

A panel of experts recognized the necessity to develop a classification system for carotid plaque and its defining characteristics. Using a multimodality analysis approach, the Plaque-RADS categories were established through consensus, drawing on existing published reports.

RESULTS

The authors present a universal classification that is applicable to both researchers and clinicians. The Plaque-RADS score offers a morphological assessment in addition to the prevailing quantitative parameter of "stenosis." The Plaque-RADS score spans from grade 1 (indicating complete absence of plaque) to grade 4 (representing complicated plaque). Accompanying visual examples are included to facilitate a clear understanding of the Plaque-RADS categories.

CONCLUSIONS

Plaque-RADS is a standardized and reliable system of reporting carotid plaque composition and morphology via different imaging modalities, such as ultrasound, computed tomography, and magnetic resonance imaging. This scoring system has the potential to help in the precise identification of patients who may benefit from exclusive medical intervention and those who require alternative treatments, thereby enhancing patient care. A standardized lexicon and structured reporting promise to enhance communication between radiologists, referring clinicians, and scientists.

Placenta Accreta Spectrum: A 2-year Retrospective Observational Study

Aims To assess the management and outcomes of Placenta Accreta Spectrum disorders and highlight the important management recommendations from international guidelines. Methods A retrospective audit of women diagnosed with Placenta Accreta Spectrum disorder from January 2018 to December 2019. Results Nine cases (0.16%) of placenta accreta from 5695 births were identified. All women received caesarean section under general anaesthesia. Caesarean hysterectomy occurred in seven cases (78%). Mean (±SD) age of women was (34.4 ± 3.9 years) and mean parity score was (3.2 ± 1.2). Mean gestational age at birth was 35.1 ± 0.8 weeks. Bilateral iliac artery balloon occlusion occurred in eight (89%) cases. Median estimated blood loss [range] was 1700 mL [1000-7000] with only 11% of patients (1/9) experiencing more than 3L of blood loss. Intraoperative red blood cell transfusion occurred in six cases (67%). Median number of units of red cell transfusion [range] was four units [0-10]. Mean hospital length of stay was (6.7 ± 1.1 days) and there were no maternal deaths. Multidisciplinary team involvement of senior anaesthetists and obstetricians was noted in all cases. Discussion Placenta accreta spectrum is increasing in incidence in obstetric practice and is associated with significant maternal morbidity and mortality. Implementing national guidelines can improve patient outcomes.

COVID-19, Telemedicine and Emergency Department Referrals: Patient Presentations and Follow-up Times to a Community Mental Health Team

Introduction

The COVID-19 pandemic caused changes to how healthcare services are utilised and delivered.

Objectives

We examine the impact of COVID-19 on the pattern of emergency patient presentations referred on to the community mental health team and the impact of utilising telemedicine on time to follow-up.

Methods

We retrospectively reviewed all clinical records of patients currently attending our service. We identified presentations to the emergency department (N=119) who were subsequently referred on for mental health follow-up.

Results

Patients being referred to our team from emergency departments were significantly younger during, mean age 33.1 years (SD=12.3) compared to before the pandemic, mean age 40.0 years (SD=14.5), p=0.006 and a higher proportion were new patients during, 55.8%, compared to pre-pandemic period 33.3%, p=0.015. There was also a higher proportion of patients presenting with suicidal ideation and lower proportions of affective, psychosis and suicidal/self-injurious acts during the pandemic period compared to before, p=0.006. The ratio of female to male patients on the other hand were similar during both periods, p=0.853. There appeared to be no difference in median time to follow-up pre and during the pandemic (6.0 vs 5.5 days, p=0.995). Further analysis also found no significant impact on time to follow-up upon implementing telemedicine consultations, with median days to initial follow-up of 6 days pre-pandemic, 4.5 days during pandemic + prior to telemedicine and 6.5 days during pandemic + telemedicine, p=0.602.

Conclusions

This study provides preliminary data on the impact of COVID-19 on mental health emergency presentations and utilization of telemedicine on time to follow-up by CMHTs.

Disclosure

No significant relationships.

Hazards and Management of Wire Bristle ingestions: A Systematic Review

OBJECTIVE

Inadvertently ingested grill brush bristles can lodge in various locations and lead to a variety of injuries. They can also be difficult to identify and remove. Our primary objective was to perform a systematic review of cases reported in the literature, with analysis of trends in clinical presentation and success of diagnostic modalities and treatment approaches.

DATA SOURCES

Cases of reported grill brush bristle ingestion reported in PubMed, PubMed Central, and Google Scholar databases through April 30, 2021.

REVIEW METHODS

Databases were searched for the following terms: ("ingestion" OR "injury" OR "barbeque" OR "BBQ" OR "grill" OR "foreign body" OR "brush" AND "wire" OR "bristle"). Data were collected on patient demographics, clinical presentation, and treatment course. Statistical analysis was performed on characteristics with low risk of confounding.

RESULTS

An overall 57 studies involving 91 patients were included. Grill brush bristles presented most commonly in the upper aerodigestive tract (48/91), followed by the abdomen (26/91) and deep neck (17/91). Computed tomography was the most accurate imaging modality for initial diagnosis, identifying 92.8% of bristles. Less invasive or adjunctive techniques such as endoscopy, intraoperative imaging, or minimally invasive surgery may be useful particularly for bristles located in the head and neck given the low rate of success of transoral surgery (66.7%).

CONCLUSION

Although this review of retained bristle may be biased toward complex cases, retained grill brush bristles represent an underrecognized and difficult-to-manage hazard. When cases are suspected, clinicians should obtain computed tomography imaging based on presentation and tailor management appropriately.

MR Angiography Series: Neurovascular MR Angiography

Neurovascular MR angiography (MRA) is an evolving imaging technique and is crucial for the workup of numerous neurologic disorders. While CT angiography (CTA) provides a more rapid imaging assessment, in select patients it can impart a small risk of contrast material-induced nephrotoxicity or radiation-associated cancers. In addition, MRA offers some advantages over CTA for neurovascular evaluation, including higher temporal resolution and the capability for vessel wall imaging. This module is the third in a series created on behalf of the Society for Magnetic Resonance Angiography (SMRA), a group of researchers and clinicians who are passionate about the benefits of MRA but understand its challenges. The full digital presentation is available online. Work of the U.S. Government published under an exclusive license with the RSNA.

Does exposure to bentonite dust during tunnel hyperbaric interventions increase health risks for compressed air workers? A prospective qualitative and quantitative safety assessment

INTRODUCTION

The mining and tunneling industries are historically associated with hazardous exposures that result in significant occupational health concerns. Occupational respiratory exposures causing pneumoconiosis and silicosis are of great concern, silicosis being non-curable. This work demonstrates that compressed-air workers (CAWs) performing tunnel hyperbaric interventions (HIs) may be at risk for hazards related to bentonite exposure, increasing the likelihood of developing harmful illnesses including cancer. Bentonite dust inhalation may result in respiratory levels of silica exceeding acceptable industrial hygiene standards.

METHODS

A qualitative observational exposure assessment was conducted on CAWs while they were performing their HI duties. This was followed by quantitative data collection using personal and area air sample techniques. The results were analyzed and interpreted using standard industrial hygiene principles and guidelines from NIOSH and OSHA.

RESULTS

Our work suggests bentonite dust exposure may be an emerging particulate matter concern among CAWs in the tunneling industry. Aerosolized bentonite particles may have potential deleterious effects that include pneumoconiosis and silicosis. Silicosis can result in the development of pulmonary carcinoma.

CONCLUSIONS

The modern tunneling industry and required hyperbaric interventional tasks represent a potential public health and occupational concern for CAWs. This paper introduces the modern tunneling industry and the duties of CAWs, the hazardous environment in which they perform their duties, and describes the risks and potential harmful health effects associated with these hazardous exposures.

Value of anterosuperior rotator cuff and labral tears at MRI for predicting long head of biceps tearing at arthroscopy

AIM

To determine whether magnetic resonance imaging (MRI) signs of subscapularis (SBT), supraspinatus (SST), or superior labral tearing predict long head of biceps (LHB) tendon tearing at arthroscopy.

MATERIALS AND METHODS

Subjects with MRI studies followed by arthroscopy were collected. Radiologists graded rotator cuff (RC) tendons and the superior labrum using three grade classifications and blinded to arthroscopy. Correlation between imaging variables and surgical outcome was expressed in terms of odds ratios and determined using a stepwise logistic regression model.

RESULTS

Selection criteria identified 89 participants. Statistically significant increase in odds of finding a partial LHB tendon tear at arthroscopy were noted for both MRI readers with any SBT tear (OR=4.1-5.6, p<0.0001 to 0.002), full-thickness SST (OR=8-20.4, p=0.002 to 0.006), and combined SST-SBT tears (OR=5.1-7.6, p<0.0001 to 0.002) and relative to grade 0 MRI scores for those categories. Statistically significant increase in the odds of finding any LHB tendon tear at arthroscopy were noted for both MRI readers with any SBT tear (OR=9.6 to 14.6, p<0.0001), full-thickness SST (OR=9.0 to 52.0, p<0.0001 to 0.0004) and combined SST-SBT tears (OR=8.2 to 15.1, p<0.0001) at MRI and relative to grade 0 MRI scores for these categories. No significant predictive effect was found for the labral categories.

CONCLUSION

LHB tendons should be closely scrutinised if anterosuperior rotator cuff tears, and SBT tears in particular, are found on MRI.

Reduction of nasal Staphylococcus aureus carriage in health care professionals by treatment with a nonantibiotic, alcohol-based nasal antiseptic

BACKGROUND

Antibiotics used to reduce nasal colonization by Staphylococcus aureus in patients before admission are inappropriate for carriage reduction on a regular basis within a hospital community. Effective nonantibiotic alternatives for daily use in the nares will allow reduction of this bacterial source to be addressed.

METHODS

Our study tested the effectiveness of a nonantibiotic, alcohol-based antiseptic in reducing nasal bacterial carriage in health care professionals (HCPs) at an urban hospital center. HCPs testing positive for vestibular S aureus colonization were treated 3 times during the day with topical antiseptic or control preparations. Nasal S aureus and total bacterial colonization levels were determined before and at the end of a 10-hour workday.

RESULTS

Seventy-eight of 387 HCPs screened (20.2%) tested positive for S aureus infection. Of 39 subjects who tested positive for S aureus infection who completed the study, 20 received antiseptic and 19 received placebo treatment. Antiseptic treatment reduced S aureus colony forming units from baseline by 99% (median) and 82% (mean) (P < .001). Total bacterial colony forming units were reduced by 91% (median) and 71% (mean) (P < .001).

CONCLUSIONS

Nasal application of a nonantibiotic, alcohol-based antiseptic was effective in reducing S aureus and total bacterial carriage, suggesting the usefulness of this approach as a safe, effective, and convenient alternative to antibiotic treatment.

Chronicles of informal caregiving in cancer: using 'The Cancer Family Caregiving Experience' model as an explanatory framework

BACKGROUND

Cancer caregiving has emerged as a dominant focus of research in recent years. A striking feature of this vast amount of literature is that it is static, examining certain points of the cancer trajectory, mostly the diagnosis and palliative care. Only The Cancer Caregiving Experience Model conceptualised the caregiving experience and explored the conceptual implications of cancer family caregiving research.

AIM

The data from this paper aim to empirically support the Cancer Caregiving Experience model, by exploring the cancer caregiving experience longitudinally.

METHODS

Semi-structured interviews with 53 caregivers were carried out at patient's diagnosis (T1), 3 months (T2), 6 months (T3) and 12 months (T4) post diagnosis.

RESULTS

Analysis of 139 interviews generated four themes that reflected a complex and dynamic process. The themes that mapped those of the model were "Primary stressors", "Secondary stressors", "Appraisal", "Cognitive-Behavioural responses" and "Health and Well Being".

CONCLUSIONS

The study adds empirical support to The Cancer Caregiving Experience Model and confirms that different primary and secondary stressors influence how the caregivers perceive the caregiving demands, the coping mechanisms they employ and their health and well being during the cancer trajectory. Access to support services should be offered to all the caregivers from as early as the diagnosis period and take into account their specific needs.

The seamless transition from student to intern: from theory to practice

Many publications have highlighted a lack of practical competencies in recently qualified interns. Consultation between the University of Queensland and the Medical Education Unit at Redcliffe Hospital identified key areas where intervention could lead to greater work readiness, and the development of a complementary programme of practical workshops to remedy those deficiencies. A variety of content experts introduced the Graduate Medical Course 3 and 4 students to a range of practical skills during a dedicated lunch time one hour workshop each week over a period of 30 weeks. Several sessions were audited by the trainers though the majority of sessions used self-evaluation by the participants. There was an overall self-reported increase in the ability to perform the tasks from 25% before the session to 90% afterwards. Seven of the participants are returning to the hospital as interns, and a follow-up survey will be performed to judge the usefulness of the programme.

Food allergy is associated with an increased risk of asthma

BACKGROUND

The atopic march is well documented, but the interrelationship of food allergy (FA) and asthma is not well understood.

OBJECTIVE

The aim of this study was to examine the strength of the association and temporal relationships between FA and asthma.

METHODS

This analysis included 271 children >or=6 years (older group) and 296 children <6 years (younger group) from a family-based FA cohort in Chicago, IL. Asthma was determined by parental report of physician diagnosis. FA status was determined based on the type and timing of clinical symptoms after ingestion of a specific food, and results of prick skin test (Multi-Test II) and allergen-specific IgE (Phadia ImmunoCAP). Analyses were carried out using logistic regression accounting for important covariates and auto-correlations among siblings. Kaplan-Meier curves were used to compare the time to onset of asthma with the FA status.

RESULTS

Symptomatic FA was associated with asthma in both older [odds ratio (OR)=4.9, 95% confidence interval (CI): 2.5-9.5] and younger children (OR=5.3, 95% CI: 1.7-16.2). The association was stronger among children with multiple or severe food allergies, especially in older children. Children with FA developed asthma earlier and at higher prevalence than children without FA (Cox proportional hazard ratio=3.7, 95% CI: 2.2-6.3 for children >or=6 years, and hazard ratio=3.3, 95% CI: 1.1-10 for children <6 years of age). No associations were seen between asymptomatic food sensitization and asthma.

CONCLUSIONS

Independent of markers of atopy such as aeroallergen sensitization and family history of asthma, there was a significant association between FA and asthma. This association was even stronger in subjects with multiple food allergies or severe FA.

Familial aggregation of food allergy and sensitization to food allergens: a family-based study

BACKGROUND

The increasing prevalence of food allergy (FA) is a growing clinical and public health problem. The contribution of genetic factors to FA remains largely unknown.

OBJECTIVE

This study examined the pattern of familial aggregation and the degree to which genetic factors contribute to FA and sensitization to food allergens.

METHODS

This study included 581 nuclear families (2,004 subjects) as part of an ongoing FA study in Chicago, IL, USA. FA was defined by a set of criteria including timing, clinical symptoms obtained via standardized questionnaire interview and corroborative specific IgE cut-offs for > or =95% positive predictive value (PPV) for food allergens measured by Phadia ImmunoCAP. Familial aggregation of FA as well as sensitization to food allergens was examined using generalized estimating equation (GEE) models, with adjustment for important covariates including age, gender, ethnicity and birth order. Heritability was estimated for food-specific IgE measurements.

RESULTS

FA in the index child was a significant and independent predictor of FA in other siblings (OR=2.6, 95% CI: 1.2-5.6, P=0.01). There were significant and positive associations among family members (father-offspring, mother-offspring, index-other siblings) for total IgE and specific IgE to all the nine major food allergens tested in this sample (sesame, peanut, wheat, milk, egg white, soy, walnut, shrimp and cod fish). The estimated heritability of food-specific IgE ranged from 0.15 to 0.35 and was statistically significant for all the nine tested food allergens.

CONCLUSION

This family-based study demonstrates strong familial aggregation of FA and sensitization to food allergens, especially, among siblings. The heritability estimates indicate that food-specific IgE is likely influenced by both genetic and environmental factors. Together, this study provides strong evidence that both host genetic susceptibility and environmental factors determine the complex trait of IgE-mediated FA.

Pregnancy and cystic fibrosis

A 20-year old parturient with moderate to severe cystic fibrosis presented for an Elective Caesarean Delivery at 31 weeks gestation due to intra-uterine growth retardation and persistent maternal weight loss. The procedure was successfully performed using a combined spinal-epidural anaesthetic technique. A review of the literature is presented and the anaesthetic implications of pregnancy in cystic fibrosis patients are discussed.

Assessing the impact of late treatment effects in cervical cancer: an exploratory study of women?s sexuality

Cancer survivorship has become a major issue due to people living longer with the effects of cancer treatment. A key issue in this area are the 'iatrogenic effects' of cancer treatments and their adverse impact on the quality of long-term patient survival. This paper considers the late physical effects of treatment for cervical cancer, in particular psychosocial problems associated with sexuality. The aim of this paper was to explore women's sexuality following treatment for cervical cancer. A qualitative phenomenological design was used to explore the lived experiences of a purposive sample of 13 women 2-3 years after treatment, using in-depth interviewing. The findings demonstrate that cancer treatment can result in a number of late physical effects, including bladder and bowel dysfunction. Moreover, the physical problems led to sexual difficulties experienced several years after treatment. Concerns were expressed by patients about perceived psychosexual difficulties encountered as a result of treatment. In conclusion, the study raises issues associated with the management of late treatment effects and its impact on sexuality. The findings underline the need for effective communication of possible iatrogenic effects of treatment during follow-up care and a need for research to consider the advice and information that women require about long-term treatment effects.

Effects of sequential changes from conventional ventilation to high-frequency oscillatory ventilation at increasing mean airway pressures in an ovine model of combined lung and head injury

BACKGROUND

The objective of this study was to determine the intracranial, cardiovascular and respiratory changes induced by conversion to high-frequency oscillator ventilation from conventional mechanical ventilation at increasing airway pressures.

METHODS

In this study, 11 anaesthetized sheep had invasive cardiovascular and intracranial monitors placed. Lung injury was induced by saline lavage and head injury was induced by inflation of an intracranial balloon catheter. All animals were sequentially converted from conventional mechanical ventilation to high-frequency oscillator ventilation at target mean airway pressures of 16, 22, 28, 34 and 40 cm H(2)O. The mean airway pressure was achieved by adjusting positive end expiratory pressure while on conventional mechanical ventilation, and continuous distending pressures while on high-frequency oscillator ventilation. Cerebral lactate production, oxygen consumption and venous oximetry were measured and analysed in relation to changes in transcranial Doppler flow velocity. Transcranial Doppler profiles together with other physiological parameters were measured at each airway pressure.

RESULTS

Cerebral perfusion pressure was significantly lower during high-frequency oscillator ventilation than during conventional mechanical ventilation (CMV: 45, 34, 22, 6, 9 mmHg vs. HFOV: 33, 20, 19, 5, 5 mmHg at airway pressures mentioned above, P = 0.02). Intracranial pressure and cerebrovascular resistance increased with increasing intrathoracic pressures (P = 0.001). Cerebral metabolic indices demonstrated an initial increase in anaerobic metabolism followed by a decrease in cerebral oxygen consumption progressing to cerebral infarction as intrathoracic pressures were further increased in a stepwise fashion. Arterial PaCO(2) increased significantly after converting from conventional mechanical ventilation to high-frequency oscillator ventilation (P = 0.001). However, no difference was observed between conventional mechanical ventilation and high-frequency oscillator ventilation when intracranial pressure, metabolic and transcranial Doppler indices were compared at equivalent mean airway pressures.

CONCLUSIONS

The use of high positive end expiratory pressure with conventional mechanical ventilation or high continuous distending pressure with high-frequency oscillator ventilation increased intracranial pressure and adversely affected cerebral metabolic indices in this ovine model. Transcranial Doppler is a useful adjunct to intracranial pressure and intracranial venous saturation monitoring when major changes in ventilation strategy are adopted.

Retention of tracheal intubation skills by novice personnel: a comparison of the Airtraq�and Macintosh laryngoscopes

Direct laryngoscopic tracheal intubation is a potentially lifesaving manoeuvre, but it is a difficult skill to acquire and to maintain. These difficulties are exacerbated if the opportunities to utilise this skill are infrequent, and by the fact that the consequences of poorly performed intubation attempts may be severe. Novice users find the Airtraq laryngoscope easier to use than the conventional Macintosh laryngoscope. We therefore wished to determine whether novice users would have greater retention of intubation skills with the Airtraq rather than the Macintosh laryngoscope. Twenty medical students who had no prior airway management experience participated in this study. Following brief didactic instruction, each took turns performing laryngoscopy and intubation using the Macintosh and Airtraq devices in easy and simulated difficult laryngoscopy scenarios. The degree of success with each device, the time taken to perform intubation and the assistance required, and the potential for complications were then assessed. Six months later, the assessment process was repeated. No didactic instruction or practice attempts were provided on this latter occasion. Tracheal intubation skills declined markedly with both devices. However, the Airtraq continued to provide better intubating conditions, resulting in greater success of intubation, with fewer optimisation manoeuvres required, and reduced potential for dental trauma, particularly in the difficult laryngoscopy scenarios. The substantial decline in direct laryngoscopy skills over time emphasise the need for continued reinforcement of this complex skill.

Audit of Mobile Intensive Care Ambulance Service

The transfer of critically ill patients between hospitals carries significant risk. The Mobile Intensive Care Ambulance Service (MICAS) in Ireland was established in 1996 to provide a ground transfer service between hospitals for critically ill patients. The aim of this audit was to determine if a centralised retrieval system for interhospital transport of critically ill patients in Ireland by MICAS is safe and efficient. 484 critically ill patients transported by MICAS between April 1996 and December 2004 were studied retrospectively. There were no patient deaths during transfer. 47% of transfers were between hospitals in the greater Dublin area. 45% were from regional centres to Dublin. 93% of patients required airway intervention before transfer (intubation or tracheostomy) and 32% needed inotropic support during transfer. The MICAS data confirm the demand for interhospital transport of critically ill patients and suggest that transfer using a centralised retrieval system is safe.

Vermont granite mortality study: an update with an emphasis on lung cancer

This mortality study extends the period of observation of an article published in 1988 of 5414 workers in Vermont granite sheds and quarries to assess whether previously reported reductions in silicosis and tuberculosis mortality were maintained. The relationship between lung cancer and quartz exposure is also examined by comparing mortality in workers hired before and after 1940, when dust controls were introduced and exposures were reduced by 80% to 90%. Before 1940, general stone shed air contained 20 million particles/cubic foot (mppcf) (approximately equivalent to 0.2 mg/m of quartz), and pneumatic chisel workers were exposed on average to 60 mppcf (approximately equivalent to 0.6 mg/m of quartz). Other workers had variable exposures. After 1940, a period of decline occurred in dust levels and then stabilized in approximately 1955, when average dust levels were 5 to 6 mppcf (equivalent to 0.05-.06 mg/m of quartz). Dust exposures in the Vermont industry is considered to be free of confounding occupational substances such as arsenic, although cigarette smoking was common. By the end of 1996, 2539 workers, or 46.9% of the cohort, had died. There were no silicosis deaths in workers hired after 1940 who were exposed only in the Vermont granite industry, illustrating the effect of lowering quartz exposures. Tuberculosis caused 2 deaths in those hired after 1940 (standardized mortality ratio [SMR] = 0.52; not significant). Overall lung cancer mortality was elevated in shed workers who had been exposed both to high levels of quartz before 1940 and to the lower levels prevailing after 1940 (SMR = 1.32; P < 0.01). Quarry workers did not show an excess of lung cancer (SMR = 0.73; not significant). When shed workers with high and low exposure histories (before and after 1940) but with comparable latency and tenure were contrasted, lung cancer mortality was similar. Differing levels of quartz exposure, which resulted in large differences in the mortality experience from silicosis, did not result in differences in lung cancer mortality. The results do not support the hypothesis that granite dust exposure has a causal association with lung cancer.