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עמוד בית
Thu, 28.11.24

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July 2012
I. Potasman, G. Naftali and M. Grupper
Background: Overuse and abuse of antibiotics is a major cause of microbial resistance. Within the hospital setting such overuse necessitates real-time supervision by infectious diseases (ID) specialists.

Objectives: To evaluate the impact of a recently introduced computerized antibiotic authorization system on the pharmacy budget.

Methods: The study was performed in a 400 bed university hospital. With the new system, antibiotic requests are entered electronically by the ward physician and reviewed within minutes to hours by ID specialists. The feedbacks are seen in the wards and pharmacy. Successive years, one before and the other after introduction of the system, were compared.

Results: During the first year with the new system 7167 antibiotic requests were entered 20% of them were rejected, mainly for improper indication (43% of the rejections). During that year the antibiotic expenditure was reduced by 17%, compared to the previous year (~equal to 200,000 US$), and was against the trend of the last 5 years. Of the 35 antibiotics under the control of the ID team, the use of 7 was probably curtailed by the supervision. Pareto analysis revealed that four drugs constituted > 50% of the pharmacy’s expenses. The mortality rate (per 1000 hospitalization days) during those 2 years fell from 4.0 to 3.8.

Conclusions: Computerized antibiotic control by ID specialists is a feasible cost-saving new modality that may help reduce unnecessary antibiotic prescriptions.
R. Marom, R. Lubetzky, F.B. Mimouni, H. Bassan, L. Ben Sira, I. Berger, S. Dollberg and D. Mandel

Background: Infants with severe intraventricular-periventricular hemorrhage (IVH) have higher absolute nucleated red blood cell counts (aNRBC) at birth (a marker of intrauterine hypoxia) than controls. Periventricular leukomalacia (PVL) is known to be associated with prenatal and postnatal events. Whether PVL is also linked to intrauterine hypoxia is unknown.

Objectives: To test the hypothesis that infants with PVL have higher aNRBC counts at birth than controls.

Methods: We studied 14 very low birth weight infants with PVL and compared them with 14 pair-matched controls without PVL. Head ultrasound scans were performed in all infants on days 3–5 and 21–25 of life. Paired tests, Fisher exact tests and stepwise logistic regression were performed for analysis.

Results: Groups were similar for gestational age (GA), birth weight (BW), prolonged rupture of membranes (PROM), Apgar scores, IVH, and aNRBC counts. PVL correlated significantly with low partial pressure of CO2 (pCO2) and IVH (P < 0.01). In logistic regression, when GA, gender, PROM, antenatal steroid therapy, 1 (or 5) minute Apgar scores, IVH grade, nosocomial sepsis, patent ductus arteriosus, necrotizing enterocolitis (NEC), need for pressors, aNRBC counts and lowest pCO2 were used as independent variables, pCO2 (P = 0.002), IVH grade (P = 0.001), GA (P = 0.038), NEC (P = 0.061) and use of dopamine (P = 0.010) remained in the analysis (total R2 = 68.2%).

Conclusions: In contrast to severe IVH, aNRBC counts do not predict the development of PVL.

E. Baharav and A. Weinberger
Background: The human lymphocyte antigen (HLA) molecule B*5101 is a functioning receptor of the immune system and is generally accepted as a genetic marker for Behçet disease (BD), a multi-organ, chronic inflammatory disorder. The role of the HLA-B*5101 in the pathogenesis of BD is elusive. The assumption that HLA-B*5101 has an active role in BD is suggestive, but no antigen has yet been identified.

Objectives: To evaluate the potential binding capacity of various antigens to the HLA-B*5101 molecule.

Methods: Using bioinformatics programs, we studied the binding capacity of HLA-B*5101 and its corresponding rat molecule RT.A1 to the following antigens: heat shock protein-60 (HSP-60), major histocompatibility complex class I chain-related gene A (MICA), retinal S-antigen (S-Ag), HLA-B-27 molecule and its peptide (PD) and tropomyosin (TPM), all of which serve as antigens in animal models corresponding to BD.

Results: In each protein including the B*5101 molecule itself, the computerized programs revealed several short sequences with potential high binding capacity to HLA-B*5101 with the exception of B-27PD. The rat MHC RT1.Al had no binding capacity to S-Ag.

Conclusions: The evaluated proteins have the potential to bind to and to serve as potential antigens to the HLA-B*5101 and the rat MHC RT1.Al molecules. The pathogenicity of these suggested short peptides should be evaluated in animal models of BD.
R. Nevzorov, T. Ben-Gal, B. Strasberg and M. Haim
G. Yahalom, A. Yagoda, C. Hoffmann, O. Dollberg and N. Gadoth
I. Kenis, M. Werner, N. Nacasch and Z. Korzets
G. Twig, A. Furer, G. Yaniv, L. Michael, R. Karplus and H. Amital
June 2012
P. Codner, R. Nevzorov, J. Kusniec, M. Haim, R. Zabarski and B. Strasberg

Background: Defibrillation threshold (DFT) testing at the time of implantable cardioverter defibrillator (ICD) insertion is performed routinely. Recently this practice is being reconsidered due to doubts about its ability to improve ICD efficacy and evidence that survival may not be affected by the test.

Objectives: To compare the outcome of ICD recipients who underwent DFT testing and those in whom no testing was performed.

Methods: A total of 213 eligible patients were implanted with an ICD between 2004 and 2009. DFT testing was performed in 80. We compared total mortality, appropriate and inappropriate ICD shocks, and anti-tachycardia pacing (ATP) events between DFT and non-DFT patients during a follow-up of 2 years.

Results: On comparing the DFT and non-DFT groups, we found a 2 year mortality rate of 7.5% versus 8.3%, respectively (P = 0.8). Furthermore, 20.7% of patients in the DFT group and 12.4% in the non-DFT group had at least one episode of ICD shock (P = 0.15). With regard to ICD treatment (ICD shocks or ATP events), 57.7% in the DFT group and 64.2% in the non-DFT group received appropriate treatments (P = 0.78).

Conclusions: No significant differences in the incidence of 2 year mortality or percentage of ICD treatment emerged between the DFT and non-DFT groups.
 

I. Shlomi Polachek, L. Huller Harari, M. Baum and R.D. Strous

Background: While many are familiar with postpartum depression, the phenomenon of postpartum post-traumatic stress disorder (PTSD) is less well known and investigated. Objectives: To assess the prevalence of postpartum PTSD in a cohort of women in Israel, and to examine factors affecting its development.

Methods: Eighty-nine women completed several ratings immediately after delivery and one month later. The factors examined related to the pregnancy, childbirth expectations, and delivery. Rating scales comprised evaluations of attachment, personality, PTSD, and demographic variables.

Results: The prevalence of post-partum PTSD was 3.4% (complete PTSD), 7.9% nearly complete PTSD, and 25.9% significant partial disorder. Women who developed PTSD symptoms had a higher prevalence of "traumatic" previous childbirth, with subsequent depression and anxiety. They also reported more medical complications and “mental crises” during pregnancy as well as anticipating more childbirth pain and fear. Instrumental or cesarean deliveries were not associated with PTSD. Most of the women who developed PTSD symptoms delivered vaginally but received fewer analgesics with stronger reported pain. Women with PTSD reported more discomfort with the undressed state, stronger feelings of danger, and higher rates of not wanting more children.

Conclusions: The study results indicate a) the importance of inquiring about previous pregnancy and birthing experiences, b) the need to identify at-risk populations, and c) increased awareness of the disorder. The importance of addressing anticipatory concerns of pain prior to delivery and of respecting the woman’s dignity and minimizing the undressed state during childbirth should not be underestimated. A short questionnaire following childbirth may enable rapid identification of symptoms relevant to PTSD.
 

E. Atar, C. Neiman, E. Ram, M. Almog, I. Gadiel and A. Belenky

Background: The presence of stones in the common bile duct (CBD) may cause complications such as obstructing jaundice or ascending cholangitis, and the stones should be removed.

0bjectives: To report our results with percutaneous elimination of CBD stones from the gallbladder through the papilla.

Methods: During a 4 year period, six patients (five men and one woman, mean age 71.5 years) who had CBD stones and an existing gallbladder drain underwent percutaneous stone push into the duodenum after balloon dilatation of the papilla, with a diameter equal to that of the largest stone. Access into the CBD was from the gallbladder, using an already existing percutaneous gallbladder drain (cholecystostomy tube).

Results: Each patient had one to three CBD stones measuring 7–14 mm. Successful CBD stone elimination into the duodenum was achieved in five of the six patients. The single failure occurred in a patient with choledochal diverticulum, who was operated successfully. There were no major or minor complications during or after the procedures.

Conclusions: Trans-cholecystic CBD stone elimination is a safe and feasible percutaneous technique that utilizes existing tracts, thus obviating the need to create new percutaneous access. This procedure can replace endoscopic or surgical CBD exploration.
 

T. Fuchs, M. Leitman, I. Zysman, T. Amini and A. Torjman

Background: Microvolt T-wave alternans (MTWA) measures subtle beat-to-beat fluctuations in the T-wave amplitude. It was found to be associated with cardiac electrical instability in patients with ischemic and dilated cardiomyopathy.

Objectives: To investigate the reproducibility of the MTWA test results in patients with ischemic heart disease.

Methods: The study group comprised patients with ischemic heart disease who participated in a rehabilitation program at the Assaf Harofeh Medical Center. MTWA was measured during a bicycle exercise test at the first encounter and repeated after one week.

Results: Of the 40 study patients with coronary artery disease, 4 had an indeterminate result and were excluded from the data analysis; 5 had a positive MTWA in the first and second study (14%), 27 had a negative MTWA in the first and second study (75%), and 4 had a negative MTWA in the first study and a positive MTWA in the second study (11%). Overall, there was a correlation between the results of the first and the second study in 89% of the patients (kappa = 0.652, P = 0.0001).

Conclusions: MTWA measurements are reproducible in the short term in patients with coronary artery disease.

A. Lichtinger, M. Caraza, T. Galbinur and I. Chowers

Background: Delayed diagnosis of choroidal neovascularization (CNV) in age-related macular degeneration (AMD) adversely affects visual outcome.

Objectives: To identify factors associated with early detection of CNV in the clinic setting.

Methods: Demographic and clinical data and lesion characteristics were retrospectively collected from 76 consecutive AMD patients who had a history of CNV in one eye and presented with CNV in the second eye. These data were evaluated for association with visual acuity (VA) at the time of presentation.

Results: Better VA was associated with a history of CNV in the fellow eye (P < 0.0001), adherence to follow-up every 4 months (P = 0.015), younger age (P = 0.03), smaller lesion (P < 0.0001), and non-subfoveal location (P = 0.048). VA of the fellow eye did not correlate with VA at presentation with CNV.

Conclusions: These data suggest that patients’ experience of CNV, regardless of VA, facilitates early diagnosis in the fellow eye. Adherence to follow-up in the routine clinic setting also facilitates early detection of CNV.

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