Japanese Heart Journal
Online ISSN : 1348-673X
Print ISSN : 0021-4868
ISSN-L : 0021-4868
Poor Reproducibility of False-positive Tilt Testing Results in Healthy Volunteers
Masataka SUMIYOSHIYoriaki MINEDASatoshi KOJIMASatoru SUWAYasuro NAKATA
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JOURNAL FREE ACCESS

1999 Volume 40 Issue 1 Pages 71-78

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Abstract

Positive responses to head-up tilt testing occur in healthy subjects. However, the reproducibility of “false-positive” tilt testing results has not been clarified. To study the reproducibility of “false-positive” responses, we prospectively performed 2 tilt tests separated by 1 to 10 (mean 3.2) weeks in 20 healthy males aged 23 to 40 years (mean 30 years). The baseline tilt test (80° for 30 minutes) ended positive in 4 (20%) subejects on the initial test and 2 (10%) on the second test with only 1 (5%) who had consecutive positive responses. No additional positive responses were noted during the isoproterenol (0.01 μg/kg/min)-tilt test for 10 minutes. We demonstrated that a false-positive response occurred in 5 (25%) of 20 young males who underwent 2 tilt tests, however, only 1 (5%) subject had consecutive positive responses. Poor reproducibility may be characteristic of false-positive responses in head-up tilt testing.

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© 1999 by the Japanese Heart Journal
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