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Biomedical subjects

J Giltvedt

Publications and source records attributed to J Giltvedt.

5 recordsLinked to original sources
PubMed1983

Cancer incidence in the rubber industry in Norway.

Cancer incidence was studied among 2,448 male rubber workers employed for 18 months or more with at least eight years of observation time. A suggested increased risk of bladder cancer, lymphoma, and leukemia was found in the footwear department; the number of observed to expected cases was 4/2.81, 5/2.26, and 4/1.76, respectively. An unexpected increased risk of pancreatic cancer was found for the maintenance-workshop department, the observed to expected numbers being 6/0.90.

Humans↗
PubMed1980

Pulsed Doppler ultrasound for measuring blood flow velocity in the human ophthalmic circulation.

This study was performed in order to develop a method for studying blood flow in the ophthalmic circulation. Using a pulsed doppler system utilizing an ultrasonic frequency of 10 MHz, blood flow velocities have been measured in the ophthalmic artery and in the arteries behind the eyeball (lateral posterior ciliary arteries) in 40 normal subjects. The mean of the peak systolic velocities were 34 +/- 6 cm/s in the ophthalmic artery, and 14 +/- 3 cm/s in the lateral posterior ciliary arteries. We conclude that blood flow velocities can be measured in defined vessel areas in the orbit.

Adolescent↗
PubMedDate not supplied

Fetal and maternal aortic flow in two different maternal positions. An investigation with combined Doppler-velocimetry and ultrasonic multiple array.

To study aortic velocities in the fetus, a newly developed multirangegated Doppler velocimeter was combined with a commercial B-mode linear-array apparatus. Spectrum analysis of the Doppler shift signals was performed. The signals with the highest frequencies were selected for hard-copy, and integrated with a digitizer. In the first part of the study, the reproducibility of the method was established by serial measurements of aortic velocity in 7 near-term fetuses. It proved sufficient to evaluate 5 successive heart-cycles. The mean coefficient of variation was 5% (mean number of recordings evaluated 7.5). In the second part of the study, possible influence of aortocaval compression on fetal aortic velocity indicative of changes in fetal cardiac output, was investigated in 10 pregnant women with no symptoms of supine hypotension. Doppler monitoring of the material cardiac output from the suprasternal notch was added to the set-up described to study the supine reduction of cardiac output frequently described in pregnant women. No significant change was found either in the maternal or in the fetal circulation.

Aorta↗