Israel Medical Association Journal

Background: Trauma is viewed by many as a global problem. The phenomenon of similar outcomes within differing healthcare delivery systems can illuminate the strengths and weaknesses of various trauma systems as well as the effects of these characteristics on patient outcome.

Objectives: To compare and contrast demographic and injury characteristics as well as patient outcomes of two urban/suburban trauma centers, one in Israel and the other in the United States.

Methods: Study data were obtained from the trauma registries of two trauma centers. Demographic variables, injury characteristics and outcomes were compared statistically between registries.

Results: Significant differences between the registries were found in demographic variables (age), injury characteristics (Injury Severity Score and mechanism of injury), and outcome (mortality and length of stay). Age and Injury Severity Score were found to be significant predictors of outcome in both registries. The Glasgow Coma Score was found to contribute to patient outcomes more than the ISS[1]. Differences were found in the relative impact of injury and demographic factors on outcomes between the registries. After including the influence of these factors on patient outcomes, significant differences still remained between the outcomes of the trauma centers.

Conclusions: Despite possible explanations for these differences, true comparisons between centers are problematic.

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Background: Previous studies have demonstrated myocardial salvage by basic fibroblast growth factor administration following chronic myocardial ischemia or acute myocardial infarction.

Objectives: To study the effect of bFGF[1] on left ventricular morphometry following coronary occlusion and reperfusion episode in rats.

Methods: bFGF (0.5 mg) or placebo was continuously administered for a period of one week using an implanted osmotic pump. Animals were sacrificed 6 weeks after surgery and myocardial cross-sections were stained with Masson-trichrome and with anti-proliferating cell nuclear antigen antibody.

Results: LV[2] area, LV cavity diameter, LV cavity/wall thickness ratio, and injury size were unchanged compared with control animals. Proliferating endothelial cells were significantly more abundant in injured compared with normal myocardium, but with no differences between animals treated or not treated with bFGF.

Conclusions: One week of systemic bFGF administration following coronary occlusion and reperfusion had no additional effect on LV geometry or cellular proliferation in rats.

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[1] bFGF = basic fibroblast growth factor

[2] LV = left ventricular

Background: The importance of health promotion and disease prevention in health policy and clinical practice is widely accepted in many countries. However, a large number of medical schools do not dedicate a significant part of their curriculum to these aspects. In Israel, there are no reports on the training of the future physician towards his or her role as health promoter in general, or in the areas of cardiovascular and cancer diseases specifically.

Objectives: To examine the preparation of Israel medical students for the role of health promoter in cancer and cardiovascular diseases.

Methods: The study was carried out over 2 years in two of the four medical schools in Israel: the Sackler Faculty of Medicine at Tel Aviv University and the Faculty of Health Sciences at Ben Gurion University in Beer Sheva. The students (n=172, 70% response rate) were surveyed during 1999-2000 by means of a questionnaire, which included assessment of their training towards the role of health promoter, their clinical experiences and exposure to patients at different stages of illnesses at various medical sites, and the specific skills and relevant knowledge they acquired.

Results: Most of the students’ learning experiences occurred in hospitals with patients at the treatment stage and little time was dedicated to prevention, especially in the community. They demonstrated better knowledge, skills and satisfaction with their learning experiences in CVD than in cancer; and reported having insufficient exposure to several common cancer diseases and lacking examining skills for early detection of cancer. The students in Beer Sheva had significantly more interaction with patients at different stages of CVD and acquired more examination skills than the Tel Aviv students.

Conclusions: A change in the curriculum is urgently needed: namely training medical students in community settings and preparing them to promote the well-being of their patients, including prevention. Attention should be given to launching new learning modes in the pre-clinical and clinical curriculum. We propose that: a) pre-clinical courses include prevention techniques in CVD and cancer, problems of cancer patients, and some examining skills; and b) the clinical phase should integrate oncology concepts and total cancer and CVD care into existing clerkships in the hospitals and in the community.
 

Background: The large number of cases of West Nile fever diagnosed in Israel in 2000 once again brought into focus the confusion that frequently accompanies the use of the term “epidemic”.

Objective: To examine the different definitions of the term “epidemic” and to propose ways in which it can be used to both improve communication among professionals and provide the public with a better sense of the associated risks.

Methods: The literature wes reviewed for the various definitions of the terms “epidemic” and “outbreak”. Sources included popular and medical dictionaries, ancient documents, epidemiology texts, legal texts, and the medical literature.

Result: The term epidemic is variously defined. The broad definition given by epidemiologists - namely, more disease the is anticipated by previous experience - is less meaningful to the general public. In some ways it conflicts with the definitions found in the popular literature, which generally imply danger to the public and a very large number of victims.

Conclusions: The interpretation of the term epidemic may vary according to the context in which it is used. For risk communication, we suggest that every effort be made to add descriptive terms that characterize the epidemic.

Background: Familial Mediterranean fever is an autosomal recessive disease characterized by sporadic attacks of inflammation affecting the serosal spaces. The gene associated with FMF[1] (MEFV), mainly expressed in neutrophils, was recently found to be expressed also in primary cultures of serosal origin (peritoneal and synovial fibroblasts). A C5a inhibitor, previously detected in normal serosal fluids, was recently identified in serosal cultures as well, and was found to be deficient in serosal fluids and cultures obtained from FMF patients.

Objective: To investigate the effect of colchicine (the main therapeutic agent for FMF patients) and certain inflammatory cytokines (IL-1b, TNF-a, IFN-a, IFN-g) on MEFV expression and C5a inhibitor activity in neutrophils and primary peritoneal fibroblast cultures.

Methods: Human primary peritoneal fibroblast cultures and neutrophils were studied for MEFV expression and C5a inhibitor activity, using reverse transcription-polymerase chain reaction and C5a-induced myeloperoxidase assay, respectively, in the presence and absence of colchicine and cytokines.

Results: MEFV expression in neutrophils was high and could not be induced further. Its expression in the peritoneal fibroblasts was lower than in neutrophils and could be induced using colchicine and cytokines parallel with induction of C5a inhibitor activity. Semi-quantitative RT-PCR[2] assays enabled estimation of MEFV induction by the cytokines at 10–100-fold and could not be further increased by concomitant addition of colchicine.

Conclusion: Serosal tissues, which are afflicted in FMF, express colchicine and cytokine-inducible MEFV and contain inducible C5a inhibitor activity. The relation between colchicine ability to induce MEFV and C5a inhibitor activity, and its efficacy in FMF treatment, require further investigation.

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[1] RT-PCR = reverse transcription-polymerase chain reaction

[2] FMF = familial Mediterranean fever

Background: Ciguatera poisoning is the commonest fish-borne seafood intoxication. It is endemic to warm water tropical areas and is caused by consumption of bottom-dwelling shore reef fish, mostly during spring and summer. The causative agent, ciguatoxin, is a heat-stable ester complex that becomes concentrated in fish feeding on toxic dinoflagellates. The common clinical manifestations are a combination of gastrointestinal and neurologic symptoms. Severe poisoning may be associated with seizures and respiratory paralysis.

Objective: To describe a series of patients who sustained ciguatera poisoning from an uncommon region and an unexpected source.

Patients: Two families complained of a sensation of “electrical currents,” tremors, muscle cramps, nightmares, hallucinations, agitation, anxiety and nausea of varying severity several hours after consuming rabbitfish (“aras”). These symptoms lasted between 12 and 30 hours and resolved completely. The temporal relationship to a summer fish meal, the typical clinical manifestations along with the known feeding pattern of the rabbitfish suggested ciguatera poisoning.

Conclusions: The Eastern Mediterranean basin is an unusual region and the rabbitfish an unusual source for ciguatera poisoning. There are no readily available and reliable means for detecting ciguatoxin in humans. A high index of suspicion is needed for diagnosis and a thorough differential diagnosis is essential to eliminate other poisonings, decompression sickness and encephalitis. Supportive therapy is the mainstay of treatment.

Background: Domestic violence is a prevalent problem with serious consequences, including a 30% risk of death. The lifetime prevalence ranges from 21 to 34%, with 8–14% of them reporting abuse in the previous year. The incidence seen in primary care practice is about 8%. Despite this high rate, domestic violence is under-diagnosed in primary care.

Objectives: To estimate the prevalence of domestic violence among women visiting a primary care center, to characterize them and to evaluate a screening tool.

Methods: A brief anonymous questionnaire (in Hebrew and Russian) for self-completion was used as a screening tool. During October 1998 we distributed the questionnaires in a primary care clinic in Beer Sheva to all women aged 18–60 years whose health permitted their participation. A woman was considered at high risk for domestic violence when she gave a positive answer to at least one of the three questions related to violence. The risk factors for domestic violence were calculated by odds ratio with 95% confidence intervals.

Results: The response rate was 95.7%. We found 41 women (30.8%) at high risk for violence. Women preferred talking about this issue with their family physician. Women at highest risk were older than 40 years, had emigrated from the former Soviet Union during the last 10 years, were living alone, and were unemployed. None of the women visited the Domestic Violence Center during the study period and 2 months thereafter. Only three women tore off the address and phone number of the center that were attached to the questionnaire.

Conclusions: The anonymous questionnaire was well accepted and had a high compliance rate. Its disadvantages are that respondents must be literate and that it permits the woman to continue with her “secret-keeping” behavior. A high prevalence of domestic violence among women visiting a primary care clinic should convince family physicians to be more active in diagnosing the problem accurately among their patients, providing treatment and preventing further deterioration and possible danger. Further effort should be directed at improving the clinic staff's ability to detect domestic violence among patients, and in developing management programs in the health system to help combat domestic violence.

Background: Each winter influenza activity is a major cause of morbidity and mortality both in Israel and worldwide.

Objectives: To identify the influenza viruses active in Israel during the winter season and to assess the extent of influenza morbidity.

Methods: Information was collected on a population of 18,684 individuals enrolled in two community clinics in central Israel. It included the total number of visits for acute respiratory infection – including influenza and influenza-like illness (ARI/flu-like) – during a 20 week surveillance period (23 November 1997 to 27 March 1998) and the percent of influenza virus isolates in nasopharyngeal specimens from a sample of patients with ARI/flu-like collected on a weekly basis during the same period.

Results: A total of 5,947 visits for ARI/flu-like were recorded among 18,684 enrolled patients in two community clinics (18.1%). The progressive increase in the number of visits for ARI/flu-like reached a peak on week 2/98 with 597 visits and a rate of 31.95 visits per 1,000 population. After this, a decrease to the initial values was evident by week 12/98. Most affected patients were in the age groups 5–14 and 65 years and over, with a rate of 733.5 and 605.3 visits per 1,000 population, respectively. Influenza virus was isolated from 92 of the 426 nasopharyngeal specimens (21.6%). The most commonly detected strain was A/Sydney/5/97(H₃N₂) like (77.2%). The peak rate of isolates was recorded at the beginning of January (01/98).

Conclusions: A/Sydney/5/97(H₃N₂) like-strain was the dominant influenza virus. Its presence did not prevent the simultaneous activity of influenza A/H₁N₁ virus. The dynamic of the clinical disease as expressed by the weekly visit rate for ARI/flu-like was similar to the temporal pattern of the virological findings. The extent of morbidity suggests moderate epidemic activity.
 

Background: Bloodletting is practiced in Ethiopia. Physicians in Israel engaging in transcultural encounters with Ethiopian immigrants are generally unaware of these ethnomedical beliefs and practices.

Objective: To assess the past and present use of bloodletting among Ethiopian immigrants in Israel.

Methods: We interviewed a sample of 50 adult patients of Ethiopian origin about present and past use of bloodletting. A second consecutive sample of 10 adult patients of Ethiopian origin who often asked their doctors to perform blood tests were identified and interviewed. Data analysis was performed by "immersion-crystallization" analysis.

Results: More than half of the interviewed patients reported the use of bloodletting. Scars were commonly present on their upper extremities. A qualitative analysis identified the different reasons for the use of bloodletting, the technique used and its appreciated efficacy. We also found an unexpected cultural synergy between traditional bloodletting and western medical blood sampling.

Conclusions: Some Ethiopian immigrants continue to perform traditional bloodletting in their new country of residency, a practice that local physicians may not be aware of. Bloodletting-type scars on the upper extremities may be common in these patients. Patients may ask for blood sampling as a culturally accepted way to perform bloodletting (synergy).
 

Background: A mass influx of immigrants from the former Soviet Union to western countries and Israel followed the demise of the Soviet Bloc at the beginning of the 1990s. It was expected that these immigrants would have a higher morbidity and mortality rate similar to that in Russia.

Objectives: To measure and compare self-reported diseases, subjective health and health services utilization of a representative sample of veteran Israeli Jews and immigrants from the former USSR.

Methods: A cross-sectional survey of Israeli adults was performed by telephone interviews. The survey included 793 Israeli Jews, of whom 124 were immigrants from the former USSR who arrived in Israel after 1989 (response rate 52%).

Results: The immigrants reported a higher rate of diseases and sub-optimal health after adjustment for other variables. However, no excess in health services utilization was reported. A time trend of reporting sub-optimal subjective health was observed: the longer the immigrants spent in Israel the more their reporting patterns resembled those of immigrants who arrived in Israel before 1970. Those who arrived after 1994 more frequently reported having a chronic disease.

Conclusions: Acculturation seems to have been the main effect on the immigrants' health, together with a healthy migrant effect at the beginning of the 1990s. The immigrants' health was worse in the later years of the immigration wave, partially reflecting the poor state of health in Russia compared to Israel.
 

Background: Concern about the side effects of allogeneic blood transfusion has led to an increased interest in methods of minimizing peri-operative transfusion. Technologies to minimize allogeneic transfusion include drugs such as aprotinin, desmopressin, tranexamic acid and erythropoietin, and techniques such as acute normovolemic hemodilution, cell salvage and autologous pre-donation.

Objective: To survey the current use in Israel of these seven technologies used to minimize allogeneic blood transfusion.

Methods: Our survey was conducted in 1996–97 in all hospitals in Israel with more than 50 beds and at least one of the following departments: cardiac or vascular surgery, orthopedics, or urology. All departments surveyed were asked: a) whether the technologies were currently being used or not, b) the degree of use, and c) the factors influencing their use and non-use. The survey was targeted at the heads of these departments.

Results: Pharmaceuticals to reduce allogeneic blood transfusion were used in a much higher proportion in cardiac surgery departments than in the other three departments. Pre-operative blood donation was used in few of the cardiac, urologic and vascular surgery departments compared to its moderate use in orthopedic departments. The use of acute normovolemic hemodilution was reported in a majority of the cardiac departments only. Moderate use of cell salvage was reported in all departments except urology where it was not used at all.

Conclusion: There is considerable practice variation in the use of technologies to minimize exposure to peri-operative allogeneic blood transfusion in Israel.
 

Background: Recent studies have suggested a possible association between Chlamydia pneumoniae infection and coronary heart disease.

Objectives: To determine titers of antibodies to Chlamydia pneumoniae in patients with acute  myocardial infraction compared with titers in several control groups.

Methods: This prospective case-control study investigated 209 individuals. We assessed the serum IgG antibody titers to Chlamydia pneumoniae in 57 consecutive patients admitted with AMI to our intensive coronary care unit during a 4 month period. A serum sample was drawn upon admission after 6 weeks. Results were compared with those of four control groups: a) patients admitted with community-acquired pneumonia (n=18), b) patients with community-acquired urinary tract infection (n=42), c) patients with angiographically normal coronary artery disease (n=44), and d) patients with stable coronary artery disease (n=48). Serum immunoglobin G antibody titers to C. pneumoniae were determined using standard micro-immunofluorescene technology.

Results: Of 57 patients with AMI, 32 (56%) had a high lgG titer to C. pneumoniae (>=1:256) on the initial test, which remained unchanged (62%) after 6 weeks. The percentage of patients with high titers was significantly lower in the control groups: 5 of 18 patients (28%) in the pneumonia group (P<0.01), 11 of 42 (26%) in the urinary tract infection group (P<0.01), 11 of 44 (25%) with normal coronary arteries (P<0.01), and 17 of 48 (35%) with stable chronic ischemic heart disease (P<0.05).

Conclusion: The detection of high titers of lgG antibodies to C. pneumoniae in many patients with AMI, compared to control groups, suggest that chronic Chlamydia pneumoniae infection plays a role in the pathogenesis of atherosclerosis and acute ischemic events.