Search PubMed⌕ Search

Biomedical subjects

L Naggan

Publications and source records attributed to L Naggan.

At least 55 records · Page 3Linked to original sources
PubMed1976

Medical planning for disaster in Israel. Evaluation of the military surgical experience in the October 1973 War, and implications for the organization of the civilian disaster services.

During its 27 years of existence, Israel has experienced four wars and dozens of mass casualty situations from various causes. This experience has led to the development of a plan for the management of mass casualties. This plan was put to the test in the October War of 1973 and proved successful. Although disasters and procedures vary widely in time and location certain principles of organization and management apply to most of them. In this paper the organization of the evacuation and management of the casualties in the October War is evaluated and its implications in the organization of civilian disaster services discussed.

Civil Disorders↗
PubMed1976

A study of hepatitis B antigen carriers among schoolchildren in Netanya, Israel.

In the town of Netanya 9162 elementary schoolchildren (age 6-14 years) were tested for hepatitis B antigen (HBsAg) by the counter-electrophoresis method. The overall prevalence was 1.8% with a higher rate for males (2.2%) than for females (1.4%). Higher rates were observed among children born in the autumn and winter, particularly among the boys. This seasonal trend and male-female difference may partially be explained if infection occurs at circumcision. The ethnic distribution showed highest rates among children of Libyan and Yemenite origin (3.9% and 2.6%, respectively), and lowest rates among children of European and Israeli born parents (0.4% and 0.2%, respectively). Prevalence of HBsAg among children from large families and those from families living in poor and crowded quarters was very significantly higher than among children from smaller families living in richer areas and in less crowded conditions. These variables, which are closely associated with social class, remain significant after adjustment for ethnic origin and seem to account for a large proportion of the variation among the Israeli schoolchildren. The variation due to ethnicity is markedly reduced when adjusted for five other pertinent variables: age, sex, season of birth, crowding and family size. Assuming that prevalence of HBsAg in a population reflects the rates of infection (past or present), the results of this study strongly support the hypothesis that type B hepatitis in Israel behaves essentially as a contagious infection manifested primarily as a subclinical disease of early and mid-childhood.

Adolescent↗
PubMed1976

HBsAG and anti-HBs among Israeli blood donors.

Prevalence of HBSAg was studied by counterelectrophoresis (CEP) in 65,795 consecutive volunteer blood donors in Israel. The overall prevalence of HBSAg was 1.22% HBSAg was more prevalent in the young donors, more prevalent in male donors and varied according to the country of origin of the donors. The prevalence of HBSAg was 0.63% among donors born in Europe or the Americas and 2.83% for those born in Asia of Africa. The HBSAg prevalence among native Israelis followed the same pattern with higher prevalence rates among those born in Israel whose families came from Asia or Africa than those from Europe or America. The prevalence of Anti-HBS by CEP was studied in 39,519 donors. The prevalence of antibody was higher in females and was higher in the same ethnic groups in whom there was a relatively high HBSAg prevalence.

Adolescent↗
PubMed1976

Acute acoustic trauma - a clinical investigation and prognosis in 433 symptomatic soldiers.

An audiological and clinical study was carried out on 433 soldiers suffering from symptomatic acute acoustic trauma (AAT). The severity of AAT was similar following exposure to different types of firearms. The typical subjective complaints were tinnitus and hearing loss and the more severe the objective hearing loss, the more frequent were the typical subjective symptoms. It seems that there are critical sound pressure levels and critical frequencies below which the remnants of infectious processes in the middle ear may have a protective effect on the cochlea in cases of exposure to noise, whereas above these critical levels and frequencies the injurious influence of noise appears to be enhanced. The best known treatment for AAT seems to be removal from further exposure to noise. Further exposure to noise had a significant worsening influence on the average hearing status, while removal from noise significantly improved the audiometric status.

Acute Disease↗
PubMed1975

Bilateral hearing loss as a sequel to unilateral acoustic trauma.

Within the framework of a study on the natural history of acoustic trauma, over 600 soldiers were examined. A higher rate of bilateral acoustic trauma was observed among soldiers with longer service. Comparison between unilateral and bilateral acoustic trauma showed a greater severity of damage in both ears of the latter group. Comparison of the progression of the damage in the same persons on two consecutive examinations suggested the same trend. It is suggested that bilateral acoustic trauma may be a later and more severe stage in some types of noise-induced damage.

Adult↗
PubMed1975

Parachuting injuries: a retrospective study of 83,718 jumps.

In a retrospective study of 83,718 consecutive parachuting jumps effected in the Israeli Defence Forces, an injury rate of 6.26/1,000 jumps was observed. About two-thirds of the injuries were light. Injury rates were calculated according to type of jump (free jumps, basic course, refresher jumps, and maneuvers jumps) and time of jump (day or night). A significant difference was found between the injury rate by day (4.62/1,000) and night (11.25/1,000). The lowest injury rate was observed among free jumpers (2.96/1,000) and highest during maneuvers jumps at night (25.75/1,000). The injury rate during the basic parachuting course was 4.04/1,000, and 8.24/1,000 in refresher jumps. Clinical data collected on 723 parachuting injuries included the site and type of injury. More than 90% of the injuries were caused during the landing impact. The most vulnerable sites were the ankle (35.6% of all injuries) and the spinal vertebrae (14.5% of all injuries).

Aerospace Medicine↗
PubMed1975

Prevalence of hepatitis B antigen among army inductees.

Eighteen thousand eight hundred and thirty-three consecutive army inductees from the Tel Aviv and Central Districts in Israel were examined for hepatitis B surface antigen (HBsAG) by the counterelectrophoresis technique. The overall prevalence was 1.36%, with a higher rate for males (1.84%) than for females (0.78%). The highest rates were observed among Jews of North African and Yemenite origin (4.14 and 3.97%, respectively) and the lowest rates was found among Jews of European origin (0.31%). There was a negative correlation between the prevalence of HBsAg and the level of education. If we assume that the prevalence of HBsAg in a population reflects the rate of infection with hepatitis B virus interacting with host factors, the results of this study support the hypothesis that infections with type B hepatitis in Israel occur mainly during childhood, more frequently among the lower socioeconomic classes, and with a predilection of either the infection or of the chronic carrier state for males and certain ethnic groups.

Adolescent↗