PubMed HealthSearch

Biomedical subjects

D Zannini

Publications and source records attributed to D Zannini.

At least 19 recordsLinked to original sources

[Incidence of the so-called minor pollens in the Naples area].

The data concerning 2500 allergic patients are analysed and the low incidence of so-called "minor pollens" in respiratory allergopathies is documented. Moreover a frequent association of positivity with the so-called "major allergens" (Grass, Parietaria, Dermatophagoides) was observed. Specific hyposensitizing therapy is advised only in carefully selected patients, those showing perfect agreement between allergological data and clinical symptomatology.

Adolescent

[Physiopathologic changes and morbidity in divers in saturation. Epidemiologic evaluation of 9 years' activities (1973-1982)].

An epidemiological study was made of 315 man-saturations over a period of 4508 days worked in saturation. The results were compared with those from 541 drillers working on a high-isolation site for periods of 30 days per shift making a total of 16,230 working days. Saturation was asymptomatic in 15,9%. The average length of conditions not interfering with diving or work was 3 days in the sample and 4 days in the controls. There were only two instances of type I decompression sickness in the divers (0,6%). These were both resolved without complications. Two subjects had to give up for health reasons (one case of parotitis and one anxiety-depression syndrome). It is felt that saturation is a very safe procedure as far as immediate pathological consequences are concerned, and that its minor pathological forms are of a significantly different type from those of the control series, especially with regard to ORL forms, upper airway conditions, sleep disturbances, and sensations of malaise and poor adaptation.

Anxiety Disorders

[Changes in the health status in occupational under-water activities].

For the past 10 years of so, Italian professional divers have had obligatory medical check-ups once a year. These check-ups are based on International standards and are particularly important for divers going to work abroad or in the open sea. The present report is based on clinical data about 100 professional divers aged 20-50. The subjects had worked 1-30 years accumulating a total of 200-5000 shallow dives. 41% had also done deep work using intervention and saturation techniques. No significant incidence of common was encountered. Radiology revealed bone alterations in 52 subjects (to the joints in 17 cases). Hearing problems were encountered in 47 divers, mostly slight and often totally or partially cured during the observation period. 5 subjects were found to be unsuitable for saturation work. The aetiopathogenetic significance of the alterations encountered is discussed in terms of the type and duration of diving practised.

Adult

[40 cases of multiple sclerosis treated with hyperbaric oxygen therapy].

40 patients affected by Multiple Sclerosis, all in a worsening phase, have been treated with cicles of HBO since 1979. The therapy consists of a first cycle of dayly treatment (5 in a week) for a total of 10-15 sessions (90' at 2 ATA) and subsequently, according to the case, 3-5 sessions every 1-2 months, or 1 monthly treatment. Six cases did not showed improvements; among these, 4 have received adequate treatment, but in 5 cases the clinical picture do not worsen. The resting 34 cases (85%) had remarkable improvements, complete or near total recovery of one or more symptoms after the first cycle or the following treatments. Improvements or recovery of symptoms can be temporary or permanent along the period of observation (from 3 to 33 months). In 8 subjects the improvement were progressive after successive cycles. Cerebellar, sensorial, and sphincterial symptoms are the most susceptible of positive changes. Walking improvements, hand use normalisation and a better bladder control have allowed many patients a very satisfactory recovery of autonomy.

Activities of Daily Living

[Changes in the pharyngeal bacterial flora during hyperbaric oxygenation].

Qualitative and quantitative bacteriological tests of throat smears were carried out on the following three groups of patients: 1) Patients exposed to several 90-minute sequences of oxygen hyperbaria, at a height of 2.2 ata O2, at intervals of 2 to 3 days. 2) Patients exposed to a single 30-minute dose of oxygen hyperbaria at a height of 2.5 ata O2/the oxygen test. 3) Patients who had never been exposed to oxygen hyperbaria. Several hundred bacterials strains of the Streptococcus, Staphylococcus, Klebsiella and Nocardia genus were isolated from the material collected from the tested patients over intervals of a few days. The collected samples were when subjected to a detailed bacteriological analysis. At the same time bacteriological tests were performed at intervals on the hyperbaric atmosphere of the therapeutic pressure chamber, the walls of the chamber, and the masks used by the patients during the administration of hyperbaric oxygen. A certain degree of qualitative and quantitative changes (number reduction of bacterial strains) was observed. The authors attribute these results to the influence of hyperbaric oxygenation both on the microorganisms, as well as on a given patient's reactivity.

Bacteriological Techniques

[Effects of variations in the ascending speed on the production of circulating gas bubbles after compressed-air diving].

Ninety-seven compressed air divers at depths of 20 to 52 msw were done. Every dive reached a tissue nitrogen saturation level greater than or equal to M value according to U.S. Navy decompression schedules and respected all prescribed decompression stop. Dives were divided in two groups according to the speed of ascent:--1st group: 33 dives (18 simulated, 15 open water) with ascent at 18 msw/min. for the first half of the distance and 10 msw/min. for the second half. No work on the bottom. Average ascent rate 14 msw/min. This profile was due to the flow limits of the outlet of our chamber during the second part of the ascent, and it was repeated in open water diving.--2nd group: 64 dives (4 simulated, 60 open water) with linear ascent at 10 msw/min. Half the open water dives were repetitive within 4 hours from the first one. Medium to heavy work on the bottom. Ultrasound Doppler bubble detection at rest and after exercise was performed at five minutes intervals and during 40 minutes after surfacing.

Diving

[Disability evaluation in decompression sickness treated with hyperbaric therapy].

The Authors report 41 cases of decompression sickness following air scuba diving observed during the last three years at the Istituto di Medicina del Lavoro of the University of Genoa and discuss about consequent injuries and damages (period of hospitalization, temporary and permanent disability). The Authors say that in 12 cases remain permanent disability with limitation more or less serious of the working capacity. They, at last, emphasize that neurological symptoms are getting better during several months so to be necessary to wait for two years at least before estimating definitively advise.

Adult

[Atmospheric pollution and chronic respiratory diseases in the blast-furnace areas of iron-works].

An epidemiologic research together with a study on the environmental pollution were carried out in order to evaluate the risk of chronic respiratory diseases of blast furnace workers. The environment study was performed mainly using personal samplers given to workers with different jobs. Observations on 222 work shifts have shown that the total dust concentration to which cast workmen, maintenance men and blast furnace service men were exposed, marginally exceed the TLV values. Furthermore the level of respirable dusts for blast furnace service men was found slightly excessive. The average SO2 concentration was largely below the TLV values. However this gas could be found in excess for very short periods during the work. The epidemiologic study, conducted on a cohort of blast furnace area workers against a control group cohort, indicated a moderate prevalence of pneumoconiosis and chronic bronchitis amongst blast furnaces workers. The clinic and radiological pictures do not seem to go beyond the initial stages.

Bronchitis

Mortality among dock-yard workers in Genoa, Italy.

The causes of death among the dock-yard workers of Genoa from December 31, 1959 to January 1, 1970, have been investigated. These workers, mainly assigned to ship repair, refitting and construction, are exposed to several noxious substances, such as: asbestos, silica, paint solvents, welding smoke and volatile products of petroleum. Two different control groups were selected: the male population of Genoa and the staff of the San Martino Hospital in Genoa. Causes of death showing a significant increase were: gastric cancer (only in comparison with the hospital staff), cancer of colon excluding rectum, lung cancer, cancer of kidney, urinary bladder and other urinary organs, respiratory diseases, cirrhosis of the liver, cardiovascular diseases (only in comparison with the hospital staff).

Adult