Biomedical subjects

G Canaveris

Publications and source records attributed to G Canaveris.

6 recordsLinked to original sources

PubMed1992

Intraventricular conduction disturbances in civilian flying personnel: left anterior hemiblock.

We undertook a retrospective study of the natural history, clinical significance, prognosis, associated conduction disturbances, and pathology, as well as flying fitness qualification of 247 cases of left anterior hemiblock (LAH), detected in a presumably healthy population of 8,915 male individuals engaged in civilian flying activities (prevalence: 2.77%). The cases were divided into three groups according to the electrical axis value of the first electrocardiogram (ECG). The group with the slow mode of appearance of LAH was the most common. If associated with right bundle branch block, LAH usually evolves first. LAH could not be ascribed to any definite pathology; neither was it a forerunner of left bundle branch block nor complete atrioventricular block. Not one episode of syncope nor of sudden incapacitation was reported. As a mere ECG finding, LAH does not modify an aviator's fitness qualification. If another conduction disturbance develops, qualification will depend on the results of complementary studies, non-invasive or invasive, according to any associated conduction disturbance.

Adult↗

PubMed1990

The history of aviation medicine in Argentina.

Ascents in balloons were first performed in Buenos Aires in 1855, and this activity was later regulated through the "Argentine Air Club," founded in 1908, whose Vice President, Jorge Newbery, subsequently became officially known as the "Founder of Argentine Aeronautics." Airplanes appeared and the first pilots' licenses were granted on June 17, 1910. Medical advice was given for such feats as crossing The Andes Cordillera in a balloon in 1915. Medical requirements for flying activities led to the creation of the Psychophysical Fitness Center in 1922, the first of its kind in Argentina and South America. There, selection and periodical check-ups were performed according to medical standards prepared by Agesilao Milano, M.D., the Founder of Aviation Medicine in Argentina. Sanitary aviation began in 1911, and was formally organized in 1940. The first paper in aviation medicine was published in 1924. Teaching and research in aviation medicine started in 1933, and continued after the creation of the National Institute of Aviation Medicine in 1945, taking as its basic objective the physical fitness qualification for all flying activities. The Institute has been recognized as a University Establishment and rules Argentine national policy in aviation medicine.

Aerospace Medicine↗

PubMed1988

Intraventricular conduction disturbances in flying personnel: incomplete right bundle branch block.

We studied the evolving characteristics, as well as the qualification criteria, applied to 261 fliers with incomplete right bundle branch block (IRBBB), detected in a presumable healthy population of 7,685 males engaged in civilian flying activities (prevalence 3.4%). In 136 cases, the IRBBB was detected in the first electrocardiogram. The highest prevalence was observed between 20 and 29 years of age. The IRBBB was permanent in 66 cases and transitory in the remaining 195. The electrical axis shifted to the left in 94 cases. Twelve cases (4.6%) evolved to complete RBBB. The IRBBB pattern implies many different clinical conditions. Flying fitness certification depends upon the cause of the IRBBB. Those due to conduction disturbance with no underlying pathology may qualified. IRBBB associated with other conduction disturbance deserves further study for possible restricted qualification.

Adolescent↗

PubMed1987

Intraventricular conduction disturbances in flying personnel: development and prognosis of bifascicular blocks.

The evolutive characteristics as well as the qualification criteria applied in 21 cases of bifascicular blocks detected in a presumably healthy population consisting of 6,915 male individuals engaged in civilian flying activities (prevalence: 0.3%) were studied. The cases were divided in four groups according to the type and severity of the conduction disturbance. The sequence of conduction disturbances, ages and electrical axis rotation velocity are assessed. Bifascicular blocks may be complete or incomplete. The progression towards advanced conduction disturbances may affect the involved fascicles independently. Cases with incomplete bifascicular block have better prognosis, followed by those with primary conduction system disease. The mean time between the development of first and second conduction disturbance was 3.5 years. On an individual basis, once those etiologies which by themselves imply a future risk are ruled out, and provided they do not show evolutive features in frequent repeat evaluations, they may be waivered for flying activities, with a proposed maximum age of 60 years.

Adolescent↗

PubMed1986

Intraventricular conduction disturbances in flying personnel: right bundle branch block.

The evolutive characteristics, as well as the qualification criteria, applied to 41 cases of complete right bundle branch block (CRBBB), detected in a presumably healthy population composed of 6,915 male individuals performing civil flying activities (prevalence = to 5.9 per 1,000) were studied. In 17 cases, the CRBBB was detected in the first electrocardiogram (ECG). In 24 cases, the CRBBB appeared after normal ECGs; the CRBBB development did not change the electrical axis in 75%, and in 50% of them an incomplete right bundle branch block (IRBBB) appeared first, suggesting a progressive compromise of the right bundle branch. One case developed arterial hypertension and coronary heart disease, another one mitral valve prolapse, and there were two cases of non-cardiovascular diseases. The CRBBB etiology in asymptomatic individuals is uncertain. The prognosis depends on the underlying disease. Once those etiologies which by themselves imply a future risk are ruled out, they may be waivered for flying activities with periodical ECG controls.

Adolescent↗

PubMed1969

[Not Available].

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Aerospace Medicine↗