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Biomedical subjects

A Serio

Publications and source records attributed to A Serio.

34 records · Page 2Linked to original sources
PubMed1986

A health examination of railway high-voltage substation workers exposed to ELF electromagnetic fields.

This is a cross-sectional survey on the health conditions of railways workers active in 258 interconnection and conversion substations all over Italy. Measurements performed in both kinds of substations operating at 220 kV have shown that maximum levels of the electric field strength and of the magnetic flux density at 50 Hz are of the order of 5 kV/m and 15 microT, respectively. Three subject groups, differently exposed (1, 10, 20 h/week), and an unexposed control group, for a total number of 627 workers, constitute the population at study. All subjects underwent a general medical examination, laboratory investigations, and a series of selected examinations relative to three systems (nervous, cardiovascular, and haematopoietic) considered at higher risk. No differences have been found between the exposed and the control groups. It is concluded that workers exposed to ELF electromagnetic fields of moderate strength do not show the presence of clear effects on their state of health.

Electromagnetic Fields↗
PubMedDate not supplied

Hemodynamics of cough cardiopulmonary resuscitation in a patient with sustained torsades de pointes/ventricular flutter.

A 43-year-old female with old myocardial infarction and stenosed bypass grafts developed sustained Torsades de Pointes/ventricular flutter (rate = 300-400 beats per minute) during coronary arteriography after contrast injection to the diagonal graft. Cough-CPR (rate = 37/min) was started within 5 s of dysrhythmia initiation and continued through two defibrillation attempts (200 and 360 joules), and IV lidocaine was administered until return of spontaneous circulation 62 s later. The patient never lost consciousness during this very rapid dysrhythmia. Certain cardiac arrest resuscitation measures (namely, initial defibrillation attemps, IV lidocaine administration) can thus be initiated in a patient while performing cough-CPR and maintaining adequate cerebral perfusion. During the dysrhythmia with Cough-CPR: (a) aortic systolic pressures averaged 100 mmHg--this has commonly been observed in other reports, and (b) aortic diastolic pressures were always > or = 50 mmHg and averaged 63 mmHg, which has seldom been this high during cough-CPR. Dysrhythmia reversion occurred 4 s after the second defibrillation attempt and 80 msec after the peak of the highest cough-generated aortic pressure pulse (128 mmHg). Cough-induced ventricular tachycardia reversion has previously been reported; this may have acted in concert with electrical defibrillation to facilitate dysrhythmia reversion. The patient recovered without incident.

Adult↗
PubMedDate not supplied

[An observational and longitudinal study on patients with kidney stones treated with Fiuggi mineral water].

PURPOSE: To evaluate the development of clinical conditions particularly the possible expulsion of renal stones, in patients with nephrolithiasis this treated with Fiuggi Mineral Water. PATIENTS AND METHODS: This study was carried out in 614 patients, by administering them an appropriate questionnaire 6 month after drinking Fiuggi Mineral Water. RESULTS: The percentage of patients eliminating one or more renal stones was higher in those who drank mineral water at home (55.9%) compared to those who just drank water in Fiuggi (38.5%). Renal stones were eliminated more frequently in case of consecutive treatments than in case of cyclic treatments (54.3% vs 44.4%). Stone elimination was also related to quantity of the water which was daily drunk (up to 1 L/day, 52%; > 2 L/day, 72%). In 29% of the patient a stone relapse after operation or lithotripsy or both was observed. CONCLUSIONS: These data in agreement with those of other investigations show that surgical treatment or lithotripsy are not able to avoid stone relapse. Other treatments, such as mineral water drinking, may be useful in this situation.

Data Interpretation, Statistical↗
PubMedDate not supplied

Effect of water of Anticolana Valley on urinary sediment of renal stone formers.

An investigation was carried out to ascertain the effect of drinking Fiuggi water on the microcrystalline structure of the calcium oxalate monohydrate present in urinary sediments provided from patients suffering from recurrent idiopathic oxalic calculosis. The experimental group was administered tap and Fiuggi water for ten days. The control group was administered tap and Fiuggi water according to the same procedure as for the experimental group. The comparative data show that drinking Fiuggi water leads to a strong reduction, and sometimes even to the elimination, of the calcium oxalate monohydrate present in the urinary sediment reducing the risk of oxalic calculosis. Fiuggi water contains organic molecules belonging to the fulvic acid family. These acids are capable of complexing the calcium ions and interact preferentially with the crystal lattice of the calcium oxalate monohydrate via the formation of a film and behave as pumping systems by linking the calcium ion, demolishing the crystal lattice and dissolving calcium and oxalate ions. Mineral water treatments must therefore be viewed as a function of the specific composition of the water administered. The ecosystem influences the composition of water, as a complex matrix containing a number of organic molecules which are potentially biologically active.

Calcium Oxalate↗
PubMedDate not supplied

[Hyponatremia and convulsions in the postoperative period in children].

Four children undergoing surgery presented with seizures and hyponatremia 12 hours after anesthesia. One child died with cerebral oedema, the others recovered. The respective roles of hypo-osmolar perfusions and ADH secretion are discussed. Ionogram before surgery, supervision of weight and diuresis and correct fluid management should prevent these postoperative complications.

Child, Preschool↗