Cardiovascular alterations in Macaca monkeys exposed to stationary magnetic fields: experimental observations and theoretical analysis

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Bioelectromagnetics (N.Y.); (United States)

DOI:https://doi.org/10.1002/bem.2250040102· OSTI ID:6184969

Tenforde, T S; Gaffey, C T; Moyer, B R; Budinger, T F

Simultaneous measurements were made of the electrocardiogram (ECG) and the intraarterial blood pressure of adult male Macaca monkeys during acute exposure to homogeneous stationary magnetic fields ranging in strength up to 1.5 tesla. An instantaneous, field strength-dependent increase in the ECG signal amplitude at the locus of the T wave was observed in fields greater than 0.1 tesla. The temporal sequence of this signal in the ECG record and its reversibility following termination of the magnetic field exposure are consistent with an earlier suggestion that it arises from a magnetically induced aortic blood flow potential superimposed on the native T-wave signal. No measurable alterations in blood pressure resulted from exposure to fields up to 1.5 tesla. This experimental finding is in agreement with theoretical calculations of the magnetohydrodynamic effect on blood flow in the major arteries of the cardiovascular system. 27 references, 1 figure, 1 table.

• Research Organization: Lawrence Berkeley Lab., CA
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6184969
• Journal Information: Bioelectromagnetics (N.Y.); (United States), Journal Name: Bioelectromagnetics (N.Y.); (United States) Journal Issue: 1 Vol. 4; ISSN BLCTD
• Country of Publication: United States
• Language: English

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BIOLOGICAL EFFECTS
BLOOD PRESSURE
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