Publications by authors named "Orit Blumenfeld"

: The impact of the COVID-19 pandemic on the incidence rate of childhood type 1 diabetes (T1D) is controversial. Our aim was to analyze the incidence of new-onset T1D among children aged 0-17 before and during the COVID-19 pandemic in Israel. : Data obtained from the national T1D registry for children aged 0-17 were analyzed for the pre-pandemic (1997-2019) and pandemic (2020-2022) periods.

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Background: We compared the effect of perioperative COVID-19, before and after vaccination, on 30-day mortality after cardiac surgery.

Methods: Data was extracted from several national registries. The study period was March 1, 2020-March 31, 2022.

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Children and adolescents with early onset autoimmune diseases have a different seasonality of month of birth than the general population. This pattern is consistent with an infection during pregnancy affecting the fetus or an infection immediately after birth that act as early triggers of the autoimmune diseases. We present data supporting the use of Rotavirus vaccinations in the reduction of incidence of childhood T1D and propose further investigations into whether other anti-virus vaccinations may reduce the burden of other autoimmune diseases such as multiple sclerosis, atopic dermatitis, psoriasis and subtypes of rheumatoid arthritis, Hashimoto thyroiditis.

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Article Synopsis
  • The study confirmed that the Society of Thoracic Surgeons predicted risk of mortality score (PROM) is effective in predicting long-term survival in Israeli cardiac surgery patients, building on prior findings for 30-day mortality.
  • Data from 1279 patients was analyzed over a follow-up period averaging 62 months, revealing that higher PROM scores were linked to significantly reduced survival rates.
  • Key factors influencing long-term mortality included advanced age, lower heart function (ejection fraction), need for reoperations, and health conditions like diabetes and kidney dialysis, indicating PROM's utility in surgical decision-making.
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Background: End-stage renal disease (ESRD) has been shown to be associated with increased mortality in patients undergoing cardiac surgery. We aimed to compare the short- and mid-term mortality after cardiac surgery of patients with dialysis-dependent ESRD (DD-ESRD) to patients with normal renal function (NRF), using national registries: the ESRD registry, the adult cardiac surgery registry (ACSR), and the National Mortality Registry.

Methods: The study population comprised 8207 adult patients who underwent either isolated coronary artery bypass grafting (CABG), isolated aortic valve replacement (AVR), isolated mitral valve replacement (MVR), or CABG + valve-related procedure, between January 2017 and April 2019.

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Article Synopsis
  • Recent studies suggest that rotavirus vaccination might influence the prevalence of type 1 diabetes (T1D) in children under 5 years old in Israel.
  • Data on insulin purchases from health organizations revealed a significant increase in T1D diagnoses before the vaccination program, showing a 50% increase in cases from 2002-2007.
  • After the introduction of free rotavirus vaccinations from 2011-2018, diagnoses of T1D in young children decreased by 3.8%, indicating a potential link between the vaccination and a reduction in T1D prevalence.
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Recent epidemiological surveys performed in Australia, USA and Israel demonstrate that Rotavirus vaccination correlates with an attenuated prevalence and/or incidence of early childhood diabetes (T1D). Other studies failed to confirm the above.

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Background: Obesity rates in Israel are increasing, and so is the popularity of bariatric surgeries, which reached in 2017 a prevalence rate of 1428.7 surgeries per million citizens. However, data regarding patient characteristics and surgery outcomes, including complications, are limited and the procedure requires monitoring.

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Background: Recently, Israel established the first national-level adult cardiac surgery database, which was linked to the Society of Thoracic Surgeons (STS).

Objectives: To validate and compare the STS predicted risk of mortality (PROM) to logistic EuroSCORE I (LESI) and EuroSCORE II (ESII) in Israeli patients undergoing cardiac surgery.

Methods: We retrospectively studied 1279 consecutive patients who underwent cardiac surgeries with a calculable PROM.

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Objective: Most published work on bariatric surgery (BS) in adolescents describes outcomes after laparoscopic adjustable gastric banding (LAGB) or Roux-en-Y gastric bypass. We compared the efficacy of LAGB and laparoscopic sleeve gastrectomy (LSG) in adolescents.

Methods: A National Bariatric Registry was queried for adolescents who underwent BS between June 2013 and December 2015.

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The objective of the study is to provide evidence-based guidance on nutritional management and optimal care for pregnancy after bariatric surgery. A consensus meeting of international and multidisciplinary experts was held to identify relevant research questions in relation to pregnancy after bariatric surgery. A systematic search of available literature was performed, and the ADAPTE protocol for guideline development followed.

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Purpose: Cerebral palsy is the most common physical disability in childhood. Our aim was to study the prevalence of wheelchair-dependent cerebral palsy (equivalent to gross motor function classification system level IV/V) among Jewish and Arab children in Israel and to investigate differences between the children of the two population groups.

Methods: Children diagnosed with cerebral palsy born in the years 2005-2006 were located through the Israel National Insurance Institute database.

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In Table 5 the P value for the parameter "More than one chronic disease" is incorrect. The correct value is 0.387, not 0.

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Background: Although bariatric surgery (BS) is considered safe, concern remains regarding severe post-operative adverse events and mortality. Using a national BS registry, the aim of this study was to assess the incidence, etiologies, and risk factors for mortality following BS.

Methods: Prospective data from the National Registry of Bariatric Surgery in Israel (NRBS) including age, gender, BMI, comorbidities, and surgical procedure information were collected for all patients who underwent BS in Israel between June 2013 and June 2016.

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Background: The impact of omega-loop gastric bypass (OLGB) on weight loss and liver enzymes remains inconclusive.

Objective: The aim of this study was to compare the impact of sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and OLGB on weight loss and liver enzyme levels.

Setting: National Bariatric Surgery Registry.

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Background: The global rise in incidence of type 1 diabetes (T1D) is too rapid to be attributed to susceptible genetic background, pinpointing a significant role for environmental factors. Unlike the theory that the need for genetic susceptibility has lessened over time, we hypothesized that the rise in T1D incidence is faster in a genetically susceptible population.

Subjects And Methods: The study population comprised of 5080 patients aged 0 to 17 years who were reported to the National Israel Diabetes Registry between 1997 and 2014.

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Background: The degree, prevalence, and risk factors linked to sleeve gastrectomy (SG) postoperative hemorrhage (POH) have not been fully defined.

Methods: An analysis was conducted on a prospectively collected database of 394 consecutive primary SGs performed in a single practice from January 2014 to December 2015.

End Points: (1) acute POH, defined by red blood cell (RBC) transfusion and/or re-exploration; (2) subclinical POH, defined by postoperative hemoglobin drop (HgbD) >one standard deviation above mean.

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Background: The scale and variables linked to bariatric surgery's effect on dyslipidemia have not been conclusive.

Objective: To compare the effect of Roux-en-Y gastric bypass (RYGB), sleeve gastrectomy (SG), and adjustable gastric banding (LAGB) on dyslipidemia SETTING: National bariatric surgery registry.

Methods: Plasma lipids and associated variables were compared at baseline and 1 year (12±4 mo) after surgery for registry patients with dyslipidemia enrolled from June 2013 to August 2014.

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Background: We investigated national trends in volume and outcomes of percutaneous coronary angioplasty (PCI), coronary artery bypass grafting (CABG), and ischemic heart disease-related mortality in Israel.

Methods And Results: Using 9th and 10th revision codes, we linked 5 Israeli national databases, including the Israel Center for Disease Control National PCI and CABG Registries, the Ministry of Health Hospitalization Report, the Center of Bureau of Statistics, and the Ministry of Interior Mortality Report, to assess the annual PCI and CABG volume, procedural mortality, comorbidities, and ischemic heart disease-related mortality between 2002 and 2014. Trends over time were analyzed using linear regression, assuming a Poisson distribution.

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Background: Little evidence is available on the choice of linear staple reloads in laparoscopic sleeve gastrectomy (LSG). Previous literature recommends matching closed staple height (CSH) to tissue-thickness (TT) to avoid ischemia. Our objective was to examine feasibility and safety of "tight" hemostatic (CSH/TT <1) stapling and map the entire gastric wall TT in LSG patients.

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Context: The inconclusive evidence regarding long-term safety of recombinant human growth hormone (rhGH) therapy underlines the need for long-term large-scale cohorts.

Objective: To assess long-term mortality and cancer incidence among patients treated with rhGH during childhood in Israel.

Design: A population-based cohort study.

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Objective: Several genes, including IL-6 encoding pro-inflammatory cytokines, are involved in development of osteoarthritis and osteoporosis. The association of radiographic hand osteoarthritis (RHOA) and osteoporosis related phenotypes (RHOP) with polymorphisms in IL-6 has been reported inconsistently. The aim of this study was to examine the association, between RHOA and RHOP and IL-6 polymorphisms in two independent samples.

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Objective: To assess the trends in the incidence of type 1 diabetes between 1997 and 2010 among 0-17-yr-old Israeli Jews and Arabs compared with global trends.

Methods: Data on children with newly diagnosed type 1 diabetes reported by pediatric endocrinologists from 19 medical centers to the Israel Center for Disease Control, as part of the National Diabetes Register.

Results: During 1997-2010, 2857 Jews and 757 Arabs were diagnosed with type 1 diabetes.

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