Victor Novack

Victor Novack
Soroka Medical Center | soroka · Clinical Research Center

MD PhD

About

405
Publications
47,836
Reads
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9,164
Citations
Introduction
Dr. Novack's expertise includes design of clinical trials and epidemiological data analysis. As a clinical epidemiologist he bridges the gap between clinical ideas and statistical dimensioning. Dr. Novack is a practicing physician in the Department of Medicine in Soroka University Medical Center, Beer-Sheva, Israel and professor of Medicine at Ben-Gurion University. He holds lecturer position at Harvard University, Boston, USA.
Additional affiliations
September 2015 - present
Ben-Gurion University of the Negev
Position
  • Professor (Full)
January 2013 - present
Beth Israel Deaconess Medical Center
Position
  • Statistical/Epidemiological Adviser
December 2011 - September 2015
Ben-Gurion University of the Negev
Position
  • Professor (Associate)

Publications

Publications (405)
Article
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Estrogen may have opposing effects on health, namely increasing the risk of breast cancer and improving bone health by increasing bone mineral density (BMD). The objective of this study was to compare dual-energy X-ray absorptiometry (DXA) BMD between women newly diagnosed with breast cancer and matched controls without breast cancer. Women newly d...
Preprint
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Variants of concern (VOC) of SARS-CoV2 and waning immunity pose a serious global problem. Overall, vaccination and prior infection provide significant protection, but some individuals remain susceptible to infection and severe disease. Rigorously identifying correlates of protection (COP) is necessary to identify these susceptible populations. We c...
Preprint
Introduction Variants of concern (VOC) of SARS-CoV2 and waning immunity pose a serious global problem. Herein, we aimed to identify novel correlates of protection (COPs) against symptomatic SARS-CoV-2 infection. Methods We conducted a Multicenter prospective study assessing the association between serological profiles and the risk for SARS-CoV-2 i...
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Background: Low serum albumin is known to be associated with mortality in sepsis, as it reflects effects of nutrition, catabolism, and edema. Objectives: To examine the association of albumin levels with in-hospital mortality in adults with sepsis, stratified by age groups. Methods: This nationwide retrospective cohort study comprised patients...
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Purpose To evaluate whether the neutrophil-to-lymphocyte ratio (NLR) can predict the need for ureteral catheterization in patients with renal colic. Materials and methods We retrospectively studied 15,887 patients with renal colic between 2005 and 2019. Patients with prior antibiotics treatment (156), with hematological diseases (15), with negativ...
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One of the most clinically important effects following the administration of packed cell transfusion (PCT) is hyperkalemia, which can cause severe life-threatening cardiac arrhythmias. This retrospective population-based cohort study included adults hospitalized between January 2007 and December 2019 in a general intensive care unit for 24 h or mor...
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Background In COVID-19 patients, lung ultrasound is superior to chest radiograph and has good agreement with computerized tomography to diagnose lung pathologies. Most lung ultrasound protocols published to date are complex and time-consuming. We describe a new illustrative Point-of-care ultrasound Lung Injury Score (PLIS) to help guide the care of...
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Objective : To investigate whether sevoflurane based anesthesia is superior to propofol in preventing lung inflammation and preventing postoperative pulmonary complications Design : Randomized controlled trial Setting : Single tertiary care university hospital Participants : 40 adults undergoing cardiac surgery with cardiopulmonary bypass Inter...
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PurposeAlthough the association between necrotizing otitis externa (NOE) and diabetes mellitus (DM) is well known, there is little knowledge in regards to the effects of DM and glycemic control on the outcome of NOE. The aim of the study was to determine the effects of DM duration and glycemic control, and in-hospital glycemic control on NOE severi...
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Background Intensive care unit (ICU) admissions among older adults are expected to increase, while the benefit remains uncertain. The availability of ICU beds varies between hospitals and between countries and is an important factor in the decision to admit older adults in the ICU. We aimed to assess if a non-restrictive approach to ICU older adult...
Article
Background In cardiac surgery, the association between hypotension during specific intraoperative phases or vasopressor-inotropes with adverse outcomes remains unclear. We hypothesized that intraoperative hypotension duration throughout the surgery or when separated into hypotension during and outside CPB may be associated with postoperative major...
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Background: One in four older adults in the Emergency Department (ED) suffers from severe cognitive impairment, creating great difficulty for the emergency physicians who determine the urgency of their patients' condition, which informs decisions regarding discharge or hospitalization. Objective: Our objective was to determine whether modified s...
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Background Despite the absence of rigorous prospective studies, there has been an increase in the use of cannabis-based medicinal products. During the study period, the use of medical cannabis in Israel was tightly regulated by national policy. Through a prospective study of approximately 10,000 patients, we aimed to characterize the medical cannab...
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In recent years, mindfulness-based interventions (MBIs) are rapidly growing in the workplace. Several meta-analyses conclude that overall MBIs have a moderate effect of alleviating deficit-based experiences, such as burnout and stress, but a small to no effect of promoting asset-based experiences, such as positive affect and well-being. While workp...
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Background/purpose The COBRA Polyzene F™ NanoCoated Coronary Stent System (PzF coated stent) stent demonstrated favorable clinical outcomes at 9 months but late results have not been reported. We sought to assess the late safety and effectiveness of the PzF coated stent for treatment of de novo coronary artery lesions. Methods Patients with de nov...
Article
Introduction Studies suggest that non-alcoholic fatty liver disease (NAFLD) is associated with an independent risk of cardiovascular disease (CVD). We utilized a large cohort of patients undergoing myocardial perfusion imaging (MPI) with single photon emission computed tomography (SPECT) to determine the association between alanine aminotransferase...
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PurposeHigh-resolution temporal bone computer tomography (HRTBCT) is the most common initial radiological modality used for the assessment of necrotizing otitis externa (NOE).Objectives(1) To compare the extension of disease, as seen on HRTBCT, in patients with NOE caused by different pathogens and (2) assess whether radiological findings may sugge...
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Background A high percentage of SARS-CoV-2 patients suffer from comorbidities and there is increasing evidence that previous cardiac disease contributes to poor outcome in these patients (1,2). There is a paucity of information regarding the implications of the disease in patients with cardiac implantable electronic devices (CIEDs). Due to the incr...
Article
Background Birthweight is a strong predictor of normal growth, healthy development, and survival. Several studies have found associations between temperature, fine particulate matter (PM2.5), and birth weight. However, the relevant timing of exposures varies between studies and is yet unclear. Therefore, we assessed the difference in term birthweig...
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Objective: Risk aversion is a personality trait influential to decision making in medicine. Little is known about how emergency department (ED) clinicians differ in their attitudes toward risk taking. Methods: We conducted a cross-sectional survey of practicing ED clinicians (physicians and advanced practice clinicians [APCs]) in Massachusetts u...
Article
Background: Seroma is the most common complication following mastectomy and can require several days of drainage and lead to delayed wound healing, longer hospital stays, and an increased financial and emotional burden. Seroma formation is not well understood and but there is good evidence that closing the dead space via quilting can help reduce s...
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Rationale: In acute respiratory distress syndrome (ARDS), the effect of positive end-expiratory pressure (PEEP) may depend on the extent to which multiorgan dysfunction contributes to risk of death, and the precision with which PEEP is titrated to attenuate atelectrauma without exacerbating overdistension. Objective: To evaluate whether multiorg...
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Objectives Methylphenidate (MPH) is the most widely prescribed therapy for attention deficit hyperactivity disorder. Animal studies have shown a potential adverse effect of MPH exposure on male fertility. We examined the impact of MPH on human male sperm parameters. Design Sperm parameters of 9769 samples from patients 18 years of age or older, co...
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Objective: to estimate the association between preoperative hemoglobin A1c (HbA1c) levels below and above 7%, and the rate of all-cause mortality (ACM) in diabetes mellitus (DM) patients after coronary artery bypass grafting (CABG) within a ten-year follow-up period. Methods: we collected data on patient HbA1c levels that were measured up to 3 m...
Article
Background: The south-eastern Mediterranean experiences frequent desert dust storm events (DDS) that have been shown to be associated with adverse health effects. Aims: This study assessed the perceptions and practices towards DDS of local authorities and stakeholders from 3 countries in the region, Cyprus, Greece and Israel. Methods: Between...
Article
Introduction Previous research suggested that an out-of-hospital cardiac arrest (OHCA) may be triggered by an exposure to ambient pollutants. Objective We investigated the link between OHCA and a short-term exposure to particulate matter (PM) and other pollutants, within extreme climate conditions in Israel and high PM. Methods In a case-crossove...
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Hypokalemia is common among critically ill patients. Parenteral correction of hyperkalemia depends on dosages and patient characteristics. Our aims were to assess changes in potassium levels following parenteral administration, and to derive a formula for predicting rises in serum potassium based on patient characteristics. We conducted a populatio...
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Sex and gender can affect the prevalence and prognosis of diseases. Our aim was to assess similarities and differences for males and females who underwent an upper endoscopy, with regards to indications and results. We reviewed all upper endoscopy reports from 2012 to 2016. Data regarding demographics, indications, and procedure findings were colle...
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Stress is a well-known trigger for primary headache yet its impact is difficult to demonstrate in large epidemiological studies. Israeli national TV news is often referred to as the “tribal fire”, as many Israelis watch national news coverage following terror attacks or military operations. We examined the association between exposure to television...
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Background Out-of-hospital-cardiac arrest (OHCA) is frequently linked to environmental exposures. Climate change and global warming phenomenon have been found related to cardiovascular morbidity, however there is no agreement on their impact on OHCA occurrence. In this nationwide analysis, we aimed to assess the incidence of the OHCA events attende...
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Glucocorticoids might have significant influence on positive fluid balance, mostly due to their mineralocorticoid effect. We assessed the association between glucocorticoid therapy and fluid balance in septic patients, in the intensive care unit (ICU). We considered two definitions of exposure: daily exposure to glucocorticoids and glucocorticoid t...
Article
Outcomes’ prediction in Electronic Health Records (EHR) and specifically in Critical Care is increasingly attracting more exploration and research. In this study, we used clinical data from the Intensive Care Unit (ICU), focusing on ICU acquired sepsis. Looking at the current literature, several evaluation approaches are reported, inspired by epide...
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Background Numerous studies have confirmed the association of ambient temperature and air pollution with a higher risk of morbidities, yet few have addressed their effect on the ocular system. The purpose of this study was to assess the association between temperature, air pollution, and emergency room visits for conjunctivitis. Methods In this ca...
Article
Introduction: One-year mortality following hip fractures increases steeply with age, from 2% in the 60- to 69-year-old population up to 28% in the oldest old (older than 90 years). Of the various factors that contribute to hip fractures, atrial fibrillation (AF) is an independent risk factor at any age. Objective: The objective of this study was...
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Background Previous reports indicate an association between ambient temperature (Ta) and air pollution exposure during pregnancy and preterm birth (PTB). Nevertheless, information regarding the association between environmental factors and specific precursors of spontaneous preterm birth is lacking. We aimed to determine the association between Ta...
Preprint
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Background Outbreaks of Coronavirus 2019 (COVID-19) in Long-Term Care Facilities (LTCFs) have resulted mainly from disease transmission by asymptomatic health care workers (HCW's). It is not known whether routine COVID-19 screening tests carried out on HCW's would reduce mortality of LTCF residents. Since mid-July 2020, the Israeli national LTCF de...
Article
Background: Medical cannabis use is increasing rapidly in the past several years, with older adults being the fastest growing group. Nevertheless, the evidence for cardiovascular safety of cannabis use is scarce. The aim of this study was to assess the effect of cannabis on blood pressure, heart rate, and metabolic parameters in older adults with h...
Preprint
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Background Central Venous Catheters (CVC) are being used in both intensive care units and general wards for multiple purposes. A previous study ¹ observed that during CVC insertion through Subclavian Vein (SCV) or the Internal Jugular Vein (IJV) the guidewire is sometimes advanced to the Inferior Vena Cava (IVC), and at other times to the right atr...
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Objective To examine the association between exposure to radiation from computed tomography (CT) studies and the incidence of cataract. Methods In a nested case–control study, all cataract cases and their matched controls were sampled from a retrospective cohort of Israeli residents who underwent CT scans or ultrasonic tests in Soroka Medical Cente...
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Purpose: Variation in medical practice is associated with poorer health outcomes, increased costs, disparities in care, and increased burden on the public health system. In the present study, we sought to describe and assess inter- and intra-primary care physician variation, adjusted for patient and clinic characteristics, over a decade of practic...
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The purpose of this study was to assess the predictive value of prostate specific antigen density (PSAD) for detection of clinically significant prostate cancer in men undergoing systematic transrectal ultrasound (TRUS)-guided prostate biopsy. We retrospectively analyzed data of men who underwent TRUS-guided prostate biopsy because of elevated PSA...
Article
Objective The study aimed to compare eye outcomes between the standard and accelerated corneal cross-linking (CXL) protocols over a 1-year follow-up, and assess whether the accelerated protocols are non-inferior to the standard. Methods A retrospective cohort study including patients older than 18 years diagnosed with progressive keratoconus who u...
Article
Objective Intraoperative hypotension (IOH) is associated with adverse outcomes. It could be challenging to define IOH in vascular surgical patients with increased baseline blood pressure (BP). The authors studied the relationship between (1) absolute and relative BP thresholds of IOH, (2) preoperative pulse pressure (PP) and isolated systolic hyper...
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Background Widespread attention to structural racism has heightened interest in disparities in the quality of care delivered to racial/ethnic minorities and other vulnerable populations. These groups may also be at increased risk of patient safety events. Objective To examine differences in inpatient patient safety events for vulnerable population...
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Background One of the greatest challenges of modern health systems is the choice and use of resources needed to diagnose and treat patients. Medical practice variation (MPV) is a broad term which entails the differences between health care providers inclusive of both the overuse and underuse. In this paper, we describe a 3-phase research protocol e...
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The advent of direct-acting antivirals (DAAs) has transformed the landscape of hepatitis C virus (HCV) management. We aimed to prospectively (real-time) evaluate the feasibility of using a response-guided therapy approach, based on mathematical modeling of early viral kinetics, to reduce the duration of DAAs therapy. Patients were treated with DAAs...
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The Negev Desert in Israel is susceptible to frequent atmospheric events of high dust loading which have been linked with negative human health outcomes, including cardiovascular and respiratory distress. Previous research suggests that the highest levels of dust over the region occur during an atmospheric pattern with a cyclone situated over the e...
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Mammography has a crucial role in the detection of breast cancer (BC), yet it is not limitation-free. We hypothesized that the combination of mammography and cell-free DNA (cfDNA) levels may better discriminate patients with cancer. This prospective study included 259 participants suspected with BC before biopsy. Blood samples were taken before bio...
Article
Rationale: Reverse triggering is an underexplored form of dyssynchrony with important clinical implications in patients with Acute Respiratory Distress Syndrome. Objectives: This retrospective study identified reverse trigger phenotypes and characterized their impacts on tidal volume and transpulmonary pressure. Methods: Fifty five patients wi...
Article
Background The physician in triage (PIT) strategy was implemented in the emergency department (ED) of the Soroka University Medical Center (SUMC) to improve overcrowding and waiting time. Our objective in the current study was to assess the impact of the PIT strategy on door-to-balloon time for the treatment of acute ST-elevation myocardial infarct...
Article
Objective To identify risk factors for antepartum fetal death (APD) in term pregnancies while considering maternal, pregnancy and fetal characteristics. Materials and methods Our study took place between the years 1988–2013. A total of 272,527 singleton births at term were recorded during this time period, including 524 cases of APD (0.2%). Cases...
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Objectives To evaluate the association between post-concussive symptomatology and heading in professional soccer players, overcoming the bias of self-reported exposure, we evaluated several clinical neuropsychiatric symptoms using questionnaires after a thorough objective follow-up of players heading-exposure throughout an entire season Methods We...
Article
Objective To explore the impact of Pecto Intercostal Fascial Plane Block (PIFB) on postoperative opioid requirements, pain scores, lengths of ICU and hospital stay and incidence of postoperative delirium in cardiac surgical patients. Design Single center, prospective, randomized (1:1), quadruple blinded, placebo-controlled trial. Setting Single c...
Article
Funding Acknowledgements None Background Patients with preserved LVEF and atrioventricular block (AVB) who are anticipated for high-burden of right ventricular (RV) pacing possess a risk to develop pacing induced cardiomyopathy (PICM). Aims To evaluate the incidence and outcomes of RV-PICM in this patient"s population. Methods 1013 patients with...
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Mapping of near-surface air temperature (Ta) at high spatio-temporal resolution is essential for unbiased assessment of human health exposure to temperature extremes, not least given the observed trend of urbanization and global climate change. Data constraints have led previous studies to focus merely on daily Ta metrics, rather than hourly ones,...
Article
Introduction Obstructive sleep apnea (OSA) is an independent risk factor for cardiovascular morbidity in adults. In children, cardiovascular morbidity associated with OSA is usually thought to resolve after tonsillectomy and adenoidectomy (T&A). There is no information regarding the long term effects of T&A on future cardiovascular morbidity in chi...
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Background Studies have shown that hypothyroid patients treated with Levothyroxine replacement therapy often experience fluctuations in TSH levels, while others remain well controlled over time. Aim To assess the association between pre-treatment TSH and other biochemical and clinical characteristics and long-term maintenance of normal TSH under Le...
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OBJECTIVE. The purpose of this study was to investigate the causes and rates of 30-day readmission after transjugular intrahepatic portosystemic shunt (TIPS) at a single liver transplant center. MATERIALS AND METHODS. We reviewed 165 TIPS procedures performed between 2003 and 2013. After excluding patients who died during the index admission (n = 1...