Israel Medical Association Journal

Background: Endobronchial ultrasound transbronchial needle aspiration (EBUS-TBNA) is a frequently used method for obtaining tissue samples for the diagnosis of various respiratory conditions, including lung cancer staging. In most cases, EBUS-TBNA is performed under moderate sedation (MS). However, in cases of respiratory compromised patients, if this procedure is performed, it is conducted under general anesthesia (GA).

Objective: To assess the diagnostic yield of EBUS-TBNA among respiratory compromised patients.

Methods: Data of consecutive patients (n=191) who underwent EBUS-TBNA at our medical center between January 2019 and December 2019 were retrospectively analyzed. Respiratory compromised patients underwent GA and patients without respiratory compromise were mostly moderately sedated (MS). Characteristics, diagnostic yield, and complication rates were compared.

Results: Diagnostic yield was similar between the two sedation modes (89% in GA group and 78% in the MS group, P = 0.11). The number of total samples obtained per procedure was significantly higher in the GA vs. the MS group (4.1 ± 2.1 vs. 2.1 ± 1.33, P < 0.01). The overall complication rate was 13% and 20.9% in the GA vs. the MS groups, respectively (P = 0.14), with the most frequent complication being minor bleeding. Interestingly, while the number of brushings, bronchoalveolar lavage, and endobronchial biopsy were similar, the percent of subjects who underwent transbronchial biopsy was significantly higher in the GA group (49% vs. 24.2%, P < 0.01).

Conclusion: EBUS-TBNA performed under GA among respiratory compromised patients is safe and has similar diagnostic yield to that of patients without a respiratory compromise

Background: Tricuspid regurgitation (TR) is associated with adverse prognosis in various patient populations, but currently no data is available about the prevalence and prognostic implication of TR in ST-segment elevation myocardial infarction (STEMI) patients.

Objectives: To investigate the possible implication of TR among STEMI patients.

Methods: We conducted a retrospective study of STEMI patients undergoing primary percutaneous coronary intervention (PCI) and its relation to major clinical and echocardiographic parameters. Patient records were assessed for the prevalence and severity of TR, its relation to the clinical profile, key echocardiographic parameters, in-hospital outcomes, and long-term mortality. Patients with previous myocardial infarction or known previous TR were excluded.

Results: The study included 1071 STEMI patients admitted between September 2011 and May 2016 (age 61 ± 13 years; predominantly male). A total of 205 patients (19%) had mild TR while another 32 (3%) had moderate or greater TR. Patients with significant TR demonstrated worse echocardiographic parameters, were more likely to have in-hospital complications, and had higher long-term mortality (28% vs. 6%; P < 0.001). Following adjustment for significant clinical and echocardiographic parameters, mortality hazard ratio of at least moderate to severe TR remained significant (hazard ratio 2.44; 95% confidence interval 1.06–5.62; P = 0.036) for patients with moderate-severe TR.

Conclusions: Among STEMI patients after primary PCI, the presence of moderate-severe TR was independently associated with adverse outcomes and significantly lower survival rate

Background: Adequate dietary habits and physical activity during childhood and adolescence may promote growth and cognitive development and contribute to the prevention of chronic disease in later life. School is considered an important social environment that can promote healthy eating habits and life-style changes.

Objectives: To evaluate the effects of a school-based intervention on nutritional knowledge, eating habits, and physical activity of adolescents.

Methods: We conducted a prospective questionnaire-based study. Anonymous questionnaires were administered at the beginning of the academic year (September 2014) in one high school. During the following year, vending machines containing milk products were installed within the school facility, and students were given two informative nutrition lectures regarding proper nutrition for age, calcium requirement and importance, and physical activity. One active sports day was initiated. At the beginning of the following academic year (September 2015), the students completed the same questionnaires.

Results: The study was comprised of 330 teenagers, mean age 15.1 ± 1.39 years, 53% males. Response rate was 83.6% ± 0.4% to multiple choice questions, 60.7% ± 0.5% to multiple section tables, and 80.3% ± 0.9% to open questions. Post-intervention, respondents reported an increase in eating breakfast (57% vs. 47.5%, P = 0.02) and a decrease in purchasing food at school (61.6% vs. 54.3%, P = 0.03). No changes were observed in consumption of milk products, knowledge regarding calcium and vegetable consumption, or sports activities.

Conclusions: Short-term high school-based interventions may lead to improvements in eating habits but are not sufficient for changing nutritional knowledge and physical activity

Background: Only a small proportion of schizophrenia patients present with catatonic symptoms. Imaging studies suggest that brain motor circuits are involved in the underlying pathology of catatonia. However, data about diffusivity dysregulation of these circuits in catatonic schizophrenia are scarce.

Objectives: To assess the involvement of brain motor circuits in schizophrenia patients with catatonia.

Methods: Diffusion tensor imaging (DTI) was used to measure white matter signals in selected brain regions linked to motor circuits. Relevant DTI data of seven catatonic schizophrenia patients were compared to those of seven non-catatonic schizophrenia patients, matched for sex, age, and education level.

Results: Significantly elevated fractional anisotropy values were found in the splenium of the corpus callosum, the right peduncle of the cerebellum, and the right internal capsule of the schizophrenia patients with catatonia compared to those without catatonia. This finding showed altered diffusivity in selected motor-related brain areas.

Conclusions: Catatonic schizophrenia is associated with dysregulation of the connectivity in specific motoric brain regions and corresponding circuits. Future DTI studies are needed to address the neural correlates of motor abnormalities in schizophrenia-related catatonia during the acute and remitted state of the illness to identify the specific pathophysiology of this disorder.

An arginine-rich apolipoprotein was discovered 50 years ago and became known as apolipoprotein E (ApoE) 10 years later. ApoE is associated with triglyceride-rich lipoproteins and mediates the clearance of these lipoproteins from the plasma. The ApoE-deficient hypercholesterolemic mice are an excellent platform for experimental atherosclerosis because they are similar to human pathology with regard to an atherogenic diet. ApoE is mainly produced in the liver and central nervous system cells. Three alleles determine six ApoE phenotypes with different metabolic effects and plasma cholesterol levels. Type III dysbetalipoproteinemia is associated with wide-spread atherogenesis with a defective ApoE2 resulting in delayed clearance of triglyceride-rich lipoproteins. ApoE4 substantially increases the risk including age of onset, progression, and prognosis of Alzheimer’s disease. Therefore, much effort has been directed to the elucidation of the pathogenic role of ApoE related to amyloid β (Aβ) acquisition in the brain. The ApoE trail passing from an enigmatic protein to a major player in cardiovascular and neurodegenerative disorders is reviewed

Background: Proximal femoral fractures (PFF) are among the most common injuries in the elderly population treated by orthopedic surgeons. Postoperative complications, especially infections, are of great importance due to their effect on patient mortality and morbidity and healthcare costs.

Objectives: To assess the main causes for postoperative infection among PFF patients.

Methods: We conducted a retrospective analysis of PFF patients in our medical center between 2015 and 2017. Patients were divided into two groups based on whether there was postoperative infection during immediate hospitalization and 30 days after surgery. Factors such as time from admission to surgery, duration of surgery, and length of stay were analyzed. Groups were analyzed and compared using a t-test, chi-squared and Fisher’s exact tests.

Results: Of 1276 patients, 859 (67%) underwent closed reduction internal fixation, 67 (5%) underwent total hip arthroplasty, and 350 (28%) underwent hemiarthroplasty. Of the total, 38 patients (3%) were diagnosed with postoperative infection. The demographics and co-morbidities were similar between the two study groups. The incident of infection was the highest among patients undergoing hemiarthroplasty (6%, P < 0.0001). Length of hospitalization (15 vs. 8 days, P = 0.0001) and operative time (117 vs. 77 minutes, P = 0.0001) were found to be the most significant risk factors for postoperative infection.

Conclusions: Predisposition to postoperative infections in PPF patients was associated with prolonged length of surgery and longer hospitalization. We recommend optimizing fast discharge, selecting the appropriate type of surgery, and improving surgical planning to reduce intraoperative delays and length of surgery.

Background: The coronavirus disease-2019 (COVID-19) pandemic forced drastic changes in all layers of life. Social distancing and lockdown drove the educational system to uncharted territories at an accelerated pace, leaving educators little time to adjust.

Objectives: To describe changes in teaching during the first phase of the COVID-19 pandemic.

Methods: We described the steps implemented at the Technion–Israel Institute of Technology Faculty of Medicine during the initial 4 months of the COVID-19 pandemic to preserve teaching and the academic ecosystem. 

Results: Several established methodologies, such as the flipped classroom and active learning, demonstrated effectiveness. In addition, we used creative methods to teach clinical medicine during the ban on bedside teaching and modified community engagement activities to meet COVID-19 induced community needs. 

Conclusions: The challenges and the lessons learned from teaching during the COVID-19 pandemic prompted us to adjust our teaching methods and curriculum using multiple online teaching methods and promoting self-learning. It also provided invaluable insights on our pedagogy and the teaching of medicine in the future with emphasis on students and faculty being part of the changes and adjustments in curriculum and teaching methods. However, personal interactions are essential to medical school education, as are laboratories, group simulations, and bedside teaching

Background: Tricuspid regurgitation (TR) is associated with adverse prognosis in various patient populations but currently no data is available about the prevalence and prognostic implication of TR in ST-segment elevation myocardial infarction (STEMI) patients.

Objectives: To investigate the possible implication of TR among STEMI patients.

Methods: We conducted a retrospective study of STEMI patients undergoing primary percutaneous coronary intervention (PCI), and its relation to major clinical and echocardiographic parameters. Patient records were assessed for the prevalence and severity of TR as well as the relation to the clinical profile, key echocardiographic parameters, in-hospital outcomes, and long-term mortality. Patients with previous myocardial infarction or known previous TR were excluded.

Results: The study included 1071 STEMI patients admitted between September 2011 and May 2016 (age 61 ± 13 years; predominantly male). A total of 205 patients (19%) had mild TR while another 32 (3%) had moderate or greater TR. Patients with significant TR demonstrated worse echocardiographic parameters, were more likely to have in-hospital complications, and had higher long-term mortality (28% vs. 6%, P < 0.001). Following adjustment for significant clinical and echocardiographic parameters, mortality hazard ratio of at least moderate to severe TR remained significant (2.44, 95% confidence interval 1.06–5.6, P = .036) for patients with moderate to severe TR.

Conclusions: Among STEMI patients after primary PCI, the presence of moderate to severe TR was independently associated with adverse outcomes and significantly lower survival rate

Background: Elevated C-reactive protein (CRP) was shown to be associated with an increased risk for new-onset atrial fibrillation (AF) in ST elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI); however, the optimal time frame to measure CRP for risk stratification is not known.

Objectives: To evaluate the relation between the change in CRP over time (CRP velocity [CRPv]) and new-onset AF among STEMI patients treated with primary PCI.

Methods: We included 801 STEMI patients who underwent PCI between 2007 and 2017 and had their CRP measured with a wide range assay (wr-CRP) at least twice during the 24 hours after admission. CRPv was defined as the change in wr-CRP concentration (mg/l) divided by the change in time (in hours) between the two measurements. Patient medical records were reviewed for occurrence of new-onset AF.

Results: New onset AF occurred in 45 patients (6%). Patients with new onset AF had significantly higher median CRPv (1.27 vs. 0.43 mg/l/h, P = 0.002). New-onset AF during hospitalization occurred in 3.4%, 4.5 %, and 9.1% of patients in the first, second and third CRPv tertiles, respectively (P for trend = 0.006). In a multivariable logistic regression, adjusting for clinical variables the odds ratios for new onset AF was 1.93 (95% confidence interval 1.0–3.59, P = 0.04) for patients in the third CRPv tertile.

Conclusion: CRPv might be an independent and rapidly measurable biomarker for new-onset AF following primary PCI in STEMI patients.

Background: Patients diagnosed with coronavirus disease-19 (COVID-19) who deteriorate to respiratory failure and require mechanical ventilation may later need to be weaned from the ventilator and undergo a rehabilitation process. The rate of weaning COVID-19 patients from mechanical ventilation is unknown.

Objective: To present our experience with ventilator weaning of COVID-19 patients in a dedicated facility.

Methods: A retrospective cohort study was conducted of 18 patients hospitalized in a COVID-19 dedicated ventilator weaning unit.

Results: Eighteen patients were hospitalized in the dedicated unit between 6 April and 19 May 2020. Of these, 88% (16/18) were weaned and underwent decannulation, while two patients deteriorated and were re-admitted to the intensive care unit. The average number of days spent in our department was 12. There was no statistically significant correlation between patient characteristics and time to weaning from ventilation or with the time to decannulation.

Conclusions: Despite the high mortality of COVID-19 patients who require mechanical ventilation, most of the patients in our cohort were weaned in a relatively short period of time. Further large-scale studies are necessary to assess the cost effectiveness of dedicated COVID-19 departments for ventilator weaning.