Human fetal response to vibroacoustic stimulation as a function of stimulus duration.
Obstet Gynecol
; 78(5 Pt 1): 807-11, 1991 Nov.
Article
in En
| MEDLINE
| ID: mdl-1923202
ABSTRACT
The effect of stimulus duration on the initial fetal heart rate (FHR) acceleration response was evaluated by assessing its amplitude and span following a single vibroacoustic stimulation with durations of 0 (sham), 1, 3, or 5 seconds. Statistically significant differences were observed in the mean amplitude and duration of acceleration in groups 3 and 5 when compared with groups 0 and 1 (P less than .05). In addition, groups 3 and 5 demonstrated significantly greater fetal reactivity than group 0 and a decrease in testing time over groups 0 and 1 (P less than .05). Our results suggest that the magnitude of the FHR acceleration response is dependent on the duration of the stimulus. Furthermore, a 3-second sound stimulus appears to be adequate for a shift to the fetal behavioral "awake" state.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Arousal
/
Vibration
/
Acoustic Stimulation
/
Heart Rate, Fetal
/
Fetus
Type of study:
Etiology_studies
/
Observational_studies
Limits:
Adult
/
Female
/
Humans
/
Pregnancy
Language:
En
Journal:
Obstet Gynecol
Year:
1991
Document type:
Article