A Tamir

Technion - Israel Institute of Technology, H̱efa, Haifa District, Israel

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Publications (176)453.41 Total impact

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    ABSTRACT: Background. Colonoscopy for screening the population at an average risk of colorectal cancer (CRC) is recommended by many leading gastrointestinal associations. Objectives. The objective was to assess the quality, complications and acceptance rate of colonoscopy by patients. Methods. We prospectively gathered data from colonoscopies which were performed between October 2003 and September 2006. Patients were asked to return a follow-up form seven days after the procedure. Those who failed to do so were contacted by phone. Results. 6584 patients were included (50.4% males). The average age of subjects was 57.73 (SD 15.22). CRC screening was the main indication in 12.8%. Cecal intubation was achieved in 92% of patients and bowel preparation was good to excellent in 76.2%. The immediate outcome after colonoscopy was good in 99.4%. Perforations occurred in 3 cases—1 in every 2200 colonoscopies. Significant bleeding occurred in 3 cases (treated conservatively). 94.2% of patients agreed to undergo repeat colonoscopy in the future if indicated. Conclusions. The good quality of examinations, coupled with the low risk for complications and the good acceptance by the patients, encourages us to recommend colonoscopy as a primary screening test for CRC in Israel.
    Diagnostic and Therapeutic Endoscopy 06/2012; 2012:612542. DOI:10.1155/2012/612542
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    ABSTRACT: The aim of this study was to characterize the normal ultrasonographic growth of the fetal superior sinus sagittalis (SSS) throughout gestation. In a prospective cross-sectional study, measurements of the fetal sinus sagittalis were obtained in patients undergoing elective fetal anatomical surveys or fetal growth scan at between 16.6 and 34.7 weeks of gestation. Special attention was given to the SSS of the fetal brain. On the coronal plane, the SSS may be easily identified immediately below the frontal bone, and anterior to the fetal head parenchyma. 206 fetuses were scanned. A regression line of the SSS was created throughout gestation and a first-degree correlation was found between gestational age (GA) and the SSS height (r = 0.418; p < 0.0001; SSS = -0.015 + 0.0178 × GA). Normal values were established for different gestational weeks. We provide ultrasonographic dimensions of the fetal SSS across pregnancy. This data potentially allows for prenatal diagnosis of abnormal appearance of the SSS.
    Fetal Diagnosis and Therapy 12/2011; 31(1):26-9. DOI:10.1159/000332970 · 2.30 Impact Factor
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    ABSTRACT: The aim of this study was to characterize the normal ultrasonographic growth of the corpus callosum (CC) in normal and in growth-restricted fetuses throughout gestation. This was a prospective cross-sectional study. Consecutive routine biometric measurements and fetal organ scans were obtained in patients undergoing elective fetal anatomical surveys or evaluation of the fetal growth between 16 to 33 weeks. Special attention was given to the CC of the fetal brain. In addition, we evaluated the growth of the CC in growth-restricted fetuses throughout pregnancy. Two hundred and fifty two normal fetuses were scanned between 16 and 36  weeks of gestation. A regression line of the CC was established through gestation and a second-degree correlation was found between gestational age and CC outer margin. Twenty four growth-restricted fetuses were also evaluated in which the growth of the CC was significantly below both the 25(th) and 50(th) percentiles in 77.3% and 95.5%, respectively, for the same gestational age. We provide nomograms for the ultrasonographic dimensions of the fetal CC that allows for prenatal diagnosis of abnormal dimensions of CC. The significance of abnormal CC growth in growth-restricted fetuses should be further evaluated.
    Prenatal Diagnosis 09/2011; 31(12):1115-9. DOI:10.1002/pd.2840 · 2.51 Impact Factor
  • American Journal of Obstetrics and Gynecology 01/2011; 204(1). DOI:10.1016/j.ajog.2010.10.359 · 3.97 Impact Factor
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    ABSTRACT: The findings of interim fluorine-18-fluorodeoxyglucose positron emission tomography (FDG-PET/CT) predict progression-free survival of patients with Hodgkin's lymphoma. Historically, the assessment was based on a static all-or-none scoring system. However, the clinical significance of any positivity in interim FDG-PET/CT has not been defined. Ninety-six patients with Hodgkin's lymphoma who underwent interim FDG-PET/CT were evaluated using dynamic and visual scores, employing mediastinal or liver blood pool uptake as a comparator. FDG-PET/CT was prospectively defined as positive if any abnormal F(18)FDG uptake was present. In a retrospective analysis dynamic score 0 indicated resolution of all disease sites; score 1 defined a single residual focus; score 2 denoted a reduction in the number of foci; score 3 defined a reduction in intensity with no reduction in number; and score 4 indicated no change in the number and intensity of foci or appearance of new foci. The dynamic visual score review reduced the number of positive interim studies from 24 to 6 if a score of 2 or less was considered negative, with significantly better specificity (96%) as compared to static visual scores (78%-86%). The 5-year progression-free survival and overall survival rates in patients who had a negative dynamic score were 92% and 97%, respectively; the corresponding figures for patients with positive results were 50% and 67%. A dynamic visual score may be a better indicator for tailoring therapy than static visual scoring.
    Haematologica 07/2010; 95(7):1198-206. DOI:10.3324/haematol.2009.016105 · 5.87 Impact Factor
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    ABSTRACT: To determine sonographic dimensions of the fetal facial profile in normal pregnancy. This was a prospective, cross-sectional study of 397 normal healthy fetuses at 14-33 weeks of gestation. After exclusion of the small numbers of patients at the upper GAs, 379 patients between 14.0 and 26.9 weeks of gestation were included in the analyses. The sagittal plane of the fetal facial profile was evaluated using transvaginal and transabdominal ultrasound. Distances from the tip of the nose to the mouth (the line between the lips), from the mouth to the gnathion (lower chin), from the upper philtrum to the mouth, and from the mouth to the upper concavity of the chin were measured and are presented according to gestational age (GA). There was a significant linear correlation between GA and the distance from the tip of the nose to the mouth (r = 0.943; P < 0.00001; y = -37.98 + 7.54 x GA), from the mouth to the gnathion (r = 0.946; P < 0.00001; y = -46.34 + 7.95 x GA), from the upper level of the philtrum to the mouth (r = 0.71; P < 0.00001; y = 0.22 + 3.33 x GA) and from the mouth to the upper concavity of the chin (r = 0.665; P < 0.00001; y = 1.65 + 2.95 x GA). The ratio between the distance from the tip of the nose to the mouth and that from the mouth to the gnathion was also almost constant throughout gestation, as was the ratio between the distance from the upper philtrum to the mouth and that from the mouth to the upper concavity of the chin. We provide normative data of the fetal facial profile across GA. Our data offer a potential tool for the prenatal diagnosis of abnormal fetal facial profile.
    Ultrasound in Obstetrics and Gynecology 02/2010; 35(2):191-4. DOI:10.1002/uog.7441 · 3.14 Impact Factor
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    ABSTRACT: Haematologica 2010 [Epub ahead of print] doi:10.3324/haematol.2009.016105 Publisher's Disclaimer. E-publishing ahead of print is increasingly important for the rapid dissemination of science. Haematologica is, therefore, E-publishing PDF files of an early version of manuscripts that have completed a regular peer review and have been accepted for publication. E-publishing of this PDF file has been approved by the authors. After having E-published Ahead of Print, manuscripts will then undergo technical and English editing, typesetting, proof correction and be presented for the authors' final approval; the final version of the manuscript will then appe-ar in print on a regular issue of the journal. All legal disclaimers that apply to the journal also pertain to this production process. Haematologica (pISSN: 0390-6078, eISSN: 1592-8721, NLM ID: 0417435, www.haemato-logica.org) publishes peer-reviewed papers across all areas of experimental and clinical hematology. The journal is owned by the Ferrata Storti Foundation, a non-profit organiza-tion, and serves the scientific community with strict adherence to the principles of open access publishing (www.doaj.org). In addition, the journal makes every paper published immediately available in PubMed Central (PMC), the US National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature.
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    ABSTRACT: Background In many countries there is a gap between the clinical evidence for cardiovascular disease (CVD) prevention and implementation in clinical practice. Inadequate control of cardiovascular risk factors and underutilization of aspirin, statins, angiotensin converting enzyme inhibitors and β-blockers are well-established examples. The optimal approach to implementation of CVD prevention in clinical practice is still under debate. The screening and monitoring (SaM) approach is based on cyclic monitoring and individual treatment of patients with cardiovascular risk factors in the primary care setting. After achieving improvements in risk factor levels and in the use of preventive medications in a pilot study, it was decided to test the efficacy of this approach in a larger population at risk.Methods Five primary care clinics adopted the SaM approach. A total of 1622 patients with established CVD, diabetes mellitus or hypertension were assessed by their family physicians for cardiovascular risk factors and use of medications for cardiovascular risk reduction. Interventions were made according to accepted clinical guidelines. Cardiovascular risk factor levels and the use of medications for CVD prevention were retrospectively analyzed.Results The results demonstrated significant reductions in blood pressure, hemoglobin A1c and low-density lipoprotein-cholesterol levels, as well as significant increases in the use of medications for CVD prevention.Conclusion A systematic approach to CVD reduction, with an emphasis on multiple risk factor assessment and use of preventive medications in patients at cardiovascular risk, yielded significant improvements in measures of the quality of preventive care.
    Primary Health Care Research & Development 12/2009; 11(01):29 - 40. DOI:10.1017/S1463423609990338
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    ABSTRACT: This retrospective study assessed the contribution of exercise stress testing (EST) in the evaluation of patients with low risk for coronary heart disease who presented to the emergency department (ED) with chest pain. The study included 175 patients who presented to the ED with chest pain and underwent EST between January 1, 2005, and November 30, 2006. After the EST, 113 patients were discharged, and 62 were admitted. Exercise stress testing's positive predictive value for coronary artery disease among admitted patients was 35.7%, and sensitivity was 95.2%. Exercise stress testing's negative predictive value among discharged patients was 99.1%. None of the 113 discharged patients returned to the ED for cardiac reasons during the 30-day follow-up period. A chest pain unit or a parallel facility for evaluating patients with chest pain and with low risk for active coronary disease is necessary for detecting low-risk patients who eventually need cardiac intervention.
    The American journal of emergency medicine 10/2009; 27(7):889-92. DOI:10.1016/j.ajem.2008.06.009 · 1.15 Impact Factor
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    ABSTRACT: Term-born children conceived by in vitro fertilisation (IVF) are reportedly taller than naturally conceived (NC) children. High levels of growth promoting hormones and epigenetic imprinting have been suggested as pathogenetic mechanisms. Tall stature in prematurely born IVF-conceived (IVF-C) children suggests pre- or early implantation imprinting rather than a postnatal effect. We studied 334 very low birthweight (VLBW: birth weight <1500 g) children born prematurely during 1995-1999 and obtained their anthropometric measures at 6-10 years of age. Perinatal and neonatal data were obtained from the Israeli VLBW database. We compared IVF-C, ovulating agents conceived (OA-C) and naturally conceived (NC) groups of children with respect to their and their parents' anthropometry and their perinatal/neonatal variables. Childhood height standard deviation scores (SDSs) were greatest in IVF-C (-0.12 (SD 1.25); p<0.022) and insignificantly greater in OA-C (-0.37 (SD 1.02)) as compared to NC (-0.58 (SD 1.36)) children. The IVF-C and NC groups were significantly different regarding 17 parental and perinatal variables; however, multiple regression analysis including these variables showed that, as compared with NC, IVF-C children had significantly older mothers at birth with earlier follow-up during pregnancy and more multi-fetal pregnancies. IVF-C and to a lesser extent OA-C prematurely born children are taller than otherwise NC children. After ruling out postnatal and parental causes, we speculate that pre- or early implantation factors might have contributed to the taller stature of IVF-C children.
    Archives of Disease in Childhood - Fetal and Neonatal Edition 09/2009; 94(5):F355-9. DOI:10.1136/adc.2008.144402 · 3.86 Impact Factor
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    ABSTRACT: Deepening sedation is often needed in patients with intracranial hypertension. All widely used sedative and anesthetic agents (opioids, benzodiazepines, propofol, and barbiturates) decrease blood pressure and may therefore decrease cerebral perfusion pressure (CPP). Ketamine is a potent, safe, rapid-onset anesthetic agent that does not decrease blood pressure. However, ketamine's use in patients with traumatic brain injury and intracranial hypertension is precluded because it is widely stated that it increases intracranial pressure (ICP). Based on anecdotal clinical experience, the authors hypothesized that ketamine does not increase-but may rather decrease-ICP. The authors conducted a prospective, controlled, clinical trial of data obtained in a pediatric intensive care unit of a regional trauma center. All patients were sedated and mechanically ventilated prior to inclusion in the study. Children with sustained, elevated ICP (> 18 mm Hg) resistant to first-tier therapies received a single ketamine dose (1-1.5 mg/kg) either to prevent further ICP increase during a potentially distressing intervention (Group 1) or as an additional measure to lower ICP (Group 2). Hemodynamic, ICP, and CPP values were recorded before ketamine administration, and repeated-measures analysis of variance was used to compare these values with those recorded every minute for 10 minutes following ketamine administration. The results of 82 ketamine administrations in 30 patients were analyzed. Overall, following ketamine administration, ICP decreased by 30% (from 25.8 +/- 8.4 to 18.0 +/- 8.5 mm Hg) (p < 0.001) and CPP increased from 54.4 +/- 11.7 to 58.3 +/- 13.4 mm Hg (p < 0.005). In Group 1, ICP decreased significantly following ketamine administration and increased by > 2 mm Hg during the distressing intervention in only 1 of 17 events. In Group 2, when ketamine was administered to lower persistent intracranial hypertension, ICP decreased by 33% (from 26.0 +/- 9.1 to 17.5 +/- 9.1 mm Hg) (p < 0.0001) following ketamine administration. In ventilation-treated patients with intracranial hypertension, ketamine effectively decreased ICP and prevented untoward ICP elevations during potentially distressing interventions, without lowering blood pressure and CPP. These results refute the notion that ketamine increases ICP. Ketamine is a safe and effective drug for patients with traumatic brain injury and intracranial hypertension, and it can possibly be used safely in trauma emergency situations.
    Journal of Neurosurgery Pediatrics 08/2009; 4(1):40-6. DOI:10.3171/2009.1.PEDS08319 · 1.37 Impact Factor
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    ABSTRACT: Earlier studies indicate that high circulating levels of insulin-like growth factor-1 (IGF-1) may be associated with premenopausal breast cancer. We studied variations in the IGF-1 gene and the growth hormone (GH1) gene in relation to risk of breast cancer in 667 Ashkenazi Jewish women (321 cases, 346 controls) from a population-based case-control study in Northern Israel, and a clinical series of 331 founder BRCA mutation carriers (161 affected, 170 unaffected). All participants were tested for six polymorphisms in the IGF-1 gene and one GH1 polymorphism. Logistic regression models were used to estimate odds ratios for haplotype-specific and genotype-specific age-adjusted risks. Two common IGF-1 haplotypes (ATTCAC, GAGTGT) were found, when compared with the most prevalent haplotype ATTCGC (32.5%), to be associated with a decreased risk of breast cancer in premenopausal noncarrier women only. Age-adjusted odds ratios were 0.5 (95% confidence interval: 0.28-0.92) for ATTCAC and 0.46 (95% confidence interval: 0.24-0.89) for GAGTGT. The GH1 polymorphism did not influence the risk of breast cancer in our study population. The IGF-1 gene seems to be associated with breast cancer risk in premenopausal Ashkenazi Jewish women who are not carriers of mutations in BRCA1/2 genes.
    European journal of cancer prevention: the official journal of the European Cancer Prevention Organisation (ECP) 07/2009; 18(5):361-7. DOI:10.1097/CEJ.0b013e32832e0942 · 2.76 Impact Factor
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    ABSTRACT: Uncorrected refractive error is the leading cause of visual impairment in children. In 2002 a screening project was launched in Israel to provide data on the effectiveness of the illiterate E-chart in identifying Jewish and Arab schoolchildren in need of a comprehensive eye examination. To present the aims, design and initial results of the visual screening project and the prevalence of vision abnormality in the study population. A cross-sectional population-based study was conducted during 2002-2003 among first- and eighth-graders in 70 schools in northern Israel. The nurse's test included use of the illiterate E-chart to measure visual acuity. The medical examination included vision history, clinical eye examination, VA and retinoscopy. The ophthalmologist's evaluation as to whether a child needed a referral for, diagnostic procedures, treatment and/or follow-up was recorded and compared with explicit referral criteria formulated after data collection. Of 1975 schoolchildren, 31% had abnormal VA, defined as VA worse than 6/6 in at least one eye, and a quarter had VA equal or worse than 6/12 in both eyes. The prevalence of vision abnormality among the children was 22.4% when based on the evaluation of the field ophthalmologist and 26.1% when based on two sets of explicit severity scores and referral criteria. Vision abnormality is a significant health problem among northern Israeli schoolchildren. This project is unique in scope and importance, providing evidence to assist policy making with regard to vision screening for schoolchildren (including data on test reliability and validity) and optimal VA cutoff level, and confirming the need for clinical guidelines regarding referral criteria.
    The Israel Medical Association journal: IMAJ 04/2009; 11(3):160-5. · 0.90 Impact Factor
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    The Journal of pediatrics 03/2009; 154(3):466-7. DOI:10.1016/j.jpeds.2008.12.002 · 3.74 Impact Factor
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    ABSTRACT: Estimate the reliability of the E-chart as used with Israeli school children. Cross-sectional, population-based study conducted among 751 Israeli students of the Northern District, aged 6- and 7-year-olds and 13- and 14-years-old in 30 schools in 2003. Each student was screened separately by two public health nurses using the illiterate E-chart. Collected data included the students' vision and demographic characteristics, the nurses' professional background, and whether they referred students for medical testing. The reliabilities of vision testing and of the recommendations were determined using total, positive, and negative percentages of agreement and Kappa coefficients. Total percentage of agreement on vision (combined findings for both eyes) was 78.2% (Kappa 0.47, 95%CI 0.41-0.53). Logistic regression models to predict agreement on vision abnormality showed a higher percentage of agreement among females and 13- and 14-year-old students than among males and 6- and 7-year old students. Total agreement of 85.8% was found in referral recommendations (Kappa 0.58, 95%CI 0.51-0.65). Significant relationships were noted with student age, ethnicity, subdistrict of residence, nurse seniority, and agreement on vision findings. Improvement in school vision-screening reliability is needed, especially among 6- and 7-year-old students. To this end, the determinants of fair reliability should be investigated and training programs planned. Reasons for differences in the reliability of nurses' recommendations detected among subdistricts must be further studied, together with careful supervision, to ensure better performance and adherence to PHS guidelines. Implications for nurses and nursing should be considered. Demographic characteristics were found to predict reliability, which can guide nurses in selecting students who need more careful attention or closer supervision during vision testing.
    Journal of Nursing Scholarship 02/2009; 41(3):250-9. DOI:10.1111/j.1547-5069.2009.01283.x · 1.77 Impact Factor
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    ABSTRACT: The perinatal-neonatal course of very-low-birth-weight (VLBW) infants might affect their childhood growth. We evaluated the effect of parental anthropometry and perinatal and neonatal morbidity of VLBW neonates on their childhood growth. We obtained parental anthropometry, height and weight at age 6-10.5 years of 334 children born as VLBW infants. Parental, perinatal and neonatal data of these children were tested for association with childhood anthropometry. (1) Maternal and paternal weight standard deviation score (SDS) and discharge weight (DW) SDS were associated with childhood weight SDS (R(2)= 0.111, p < 0.00001); (2) Maternal and paternal height SDS, corrected gestational age (GA) at discharge, maternal assisted reproduction and SGA status were associated with childhood height SDS (R(2)= 0.208, p < 0.00001); (3) paternal weight SDS, DW SDS and surfactant therapy were associated with childhood body mass index (BMI) SDS (R(2)= 0.096, p < 0.00001). 31.1% of VLBW infants had DW SDS < -1.88, and are to be considered small for gestational age ('SGA'). One quarter of these infants did not catch up by age 6-10.5 years. Childhood anthropometry of VLBW infants depends on parental anthropometry, postnatal respiratory morbidity and growth parameters at birth and at discharge. Almost one-third of VLBW premature infants had growth restriction at discharge from neonatal intensive care unit (NICU), a quarter of whom did not catch up by age 6-10.5 years.
    Acta Paediatrica 02/2009; 98(6):963-9. DOI:10.1111/j.1651-2227.2009.01242.x · 1.84 Impact Factor
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    ABSTRACT: Background Disease behavior in Crohn’s disease (CD) may be modified by disease location and genotype. Disease behavior may change over time, and thus analysis requires follow-up. To date, there have been few pediatric studies that have evaluated the association between disease behavior and genotype with prolonged follow-up. The aim of our study was to evaluate the effect of genotype, phenotype, and ethnicity on disease behavior in pediatric CD. Methods Evaluation of 128 pediatric CD was followed by analysis of 232 pediatric and adult-onset CD patients. Inclusion required at least 2 years of follow-up. Phenotype, ethnicity, and disease duration were recorded. Patients were genotyped for polymorphisms in the NOD2/CARD15 gene. Results Colonic involvement was more frequent in younger patients. Pediatric disease at end of follow-up was classified as inflammatory (78%), penetrating (7%), and stricturing (17%). Duration of follow-up (mean 4.9 pediatric and 6.4years mixed) was associated with more stricturing and penetrating disease. There was no association between mean age of onset and NOD2/CARD15, or either of these with disease behavior. These observations were replicated in the mixed cohort. Sephardic Jewish origin was inversely correlated with inflammatory behavior (P=0.006), independent of NOD2/CARD15 genotype. Conclusions Duration of disease and ethnicity, irrespective of NOD2/CARD15 genotype and age of onset, were the only predictors for penetrating or stricturing disease.
    Digestive Diseases and Sciences 12/2008; 54(1):142-150. DOI:10.1007/s10620-008-0326-7 · 2.55 Impact Factor
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    ABSTRACT: A polymeric diet rich in transforming growth factor-beta 2 used as a single nutrient has been shown to induce remission in 79% of children with Crohn's disease. To summarize the experience of several pediatric gastroenterology units in Israel using a TGFbeta2-enriched polymeric diet (Modulen IBD) supplementation in children and adolescents with Crohn's disease. In a retrospective study we reviewed the charts of 28 children with Crohn's disease (10 girls, 18 boys) who received, in addition to conventional treatment, Modulen IBD as a supplement to their regular nutrition. These children were compared with 18 children supplemented with standard polymeric formula (Ensure Plus) and 18 children without formula supplementation. We recorded clinical manifestations, growth, and the Pediatric Crohn's Disease Activity Index before and after initiation of the polymeric diet. The Modulen-treated children showed a significant decrease in PCDAI from 34.3 to 15.7 (P< 0.0001). A significant decrease in PCDAI was recorded also in the Ensure Plus group, from 35 to 22 (P= 0.02) but not in the non-supplemented group. Significant improvements in body mass index (P = 0.01) and erythrocyte sedimentation rate (P= 0.03) were recorded at follow-up (median 3.4 months) only in the Modulen IBD group. In this cohort of children with Crohn's disease, supplementation of the diet with Modulen IBD as well as supplementation with Ensure Plus was associated with a decrease in PCDAI. The children supplemented with Modulen IBD also showed improvement in BMI, suggesting an additional advantage of nutritional therapy in children with this disease.
    The Israel Medical Association journal: IMAJ 08/2008; 10(7):503-7. · 0.90 Impact Factor
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    ABSTRACT: To assess the reliability of visual assessment of bilirubin levels (BiliEye) in newborns as a screening tool to detect significant neonatal hyperbilirubinemia. 5 neonatologists and 17 nurses estimated 3,532 BiliEye in 1,129 term and late preterm (> or = 35 weeks) infants before discharge from the nursery, at 62 +/- 24 hours. Total serum bilirubin (TSB) levels were measured concomitantly. Mean TSB and BiliEye were 6.7 +/- 2.9 mg/dL (range, 0.4-18.2 mg/dL) and 6.6 +/- 3.2 mg/dL (range, 0.0-17.2 mg/dL), respectively, with good correlation (Pearson's r = 0.752, P < .0001), but other measures of agreement were poor. 61.5% of the 109 babies with TSB levels in high-risk zones were clinically misclassified. The area under curve (AUC) of the receiver-operating characteristics plotted for these high-risk zones was 0.825, but became low for early discharge (< or = 36 hours; AUC = 0.638) and late preterm (35-37 weeks; AUC = 0.613). There was significant interobserver variation (low weighted kappa, 0.363). Although there was good correlation between BiliEye and actual TSB level, visual assessment was unreliable as a screening tool to detect significant neonatal hyperbilirubinemia before discharge. Babies with TSB levels within high-risk zones may be clinically misdiagnosed as low-risk, resulting in inadequate follow-up.
    The Journal of pediatrics 06/2008; 152(6):782-7, 787.e1-2. DOI:10.1016/j.jpeds.2007.11.003 · 3.74 Impact Factor
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    ABSTRACT: Despite the recent advances in methods for culturing bacteria, at least 24 hours are needed for most pathogens to be recognized. This period may be critical for the differentiation of a true bacteremia from a contaminated culture. We studied the value of CRP compared to total leukocytes (WBC) and absolute neutrophil count (ANC) in differentiating positive, contaminated and negative blood cultures in various pediatric infectious diseases (pneumonia, acute gastroenteritis (AGE), urinary tract infection (UTI) and acute otitis media (AOM)). Data was collected retrospectively from patients who were admitted or discharged from to the pediatric ward with one of the above diagnoses. Children with chronic diseases or with immunodeficiency were excluded from the study. CRP levels were significantly higher in the positive culture group versus contaminated and negative groups (101 mg/L, 30.9 mg/L, 34.3 mg/L, respectively). The total leukocytes and ANC were not of value. When divided into diagnostic subgroups, CRP levels were significantly higher in the positive blood culture groups in patients with pneumonia and AGE. The sensitivity of a CRP value above 85 mg/L for pneumonia and UTI and above 30 mg/L for AGE and AOM in discriminating true positive versus contaminated culture was 70% with a specificity of 67.6% and a positive predictive value of 60.3%. CRP may be used for differentiation between positive and contaminated blood cultures in children and have been shown to be a better predictor than WBC or ANC for this purpose.
    Medical science monitor: international medical journal of experimental and clinical research 06/2008; 14(5):CR255-261. · 1.22 Impact Factor

Publication Stats

2k Citations
453.41 Total Impact Points

Institutions

  • 1990–2012
    • Technion - Israel Institute of Technology
      • • Rambam Medical Center
      • • Ruth and Bruce Rappaport Faculty of Medicine
      H̱efa, Haifa District, Israel
  • 1994–2011
    • Rambam Medical Center
      • • Department of Gastroenterology
      • • Department of Obstetrics and Gynecology A
      • • Department of Orthopedic Surgery A
      • • Department of Neonatology
      • • Department of Ophthalmology
      H̱efa, Haifa, Israel
  • 1989–2009
    • Carmel Medical Center
      H̱efa, Haifa District, Israel
  • 2008
    • Schneider Children's Medical Center of Israel
      Petah Tikva, Central District, Israel
  • 2003
    • University of Haifa
      • Department of Neurobiology
      Haifa, Haifa District, Israel
  • 1992–2000
    • Bnai Zion Medical Center, Haifa
      H̱efa, Haifa District, Israel
  • 1999
    • Sheba Medical Center
      Gan, Tel Aviv, Israel
  • 1993–1994
    • Ben-Gurion University of the Negev
      • Faculty of Health Sciences
      Be'er Sheva`, Southern District, Israel
  • 1988
    • Western Galilee Hospital
      Nahariya, Northern District, Israel