Mobile Phone Effects on Umbilical Artery Doppler and Heart Rate Tracing

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

190 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-06-01

Study Completion Date

2018-01-23

Brief Summary

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Women were instructed not to use the mobile phones for 24 hours before carrying out the initial CTG trace and Doppler ultrasound. For each patient, initial 15 minutes CTG trace recording was done followed by umbilical artery Doppler ultrasound using high resolution ultrasound unit with 3-5 MHz transabdominal transducers (General Electric logic a500, logic a200 City country). Thereafter, the mobile phone (type, in the dialing mode, was put on the mother's abdomen for 10 minutes, concurrently with repeating the 15 minutes CTG trace. The umbilical artery Doppler was repeated 5 minutes after hanging up to avoid the interference with the Doppler machine. The umbilical artery Doppler ultrasound and the recorded fetal heart rate (FHR) strips before and after the mobile phone use were blindly analyzed with respect to umbilical artery resistance indices (RI) and CTG parameters in terms of number of fetal kicks, absence of beat to beat variability, loss of accelerations and the appearance of spontaneous decelerations.

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Detailed Description

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Conditions

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Umbilical Artery Doppler Fetal Heart Rate Tracing

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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normal growth

120 woman with normal fetal growth will be subjected to 15 minutes CTG trace recording before using mobile phone and repeated while the phone is in the dialing mode for 10 minutes. Umbilical artery (UA) Doppler ultrasound will be done after the initial CTG trace and was repeated 5 minutes after hanging up the mobile phone. UA resistance indices, number of fetal kicks, the loss of acceleration and variability, and the appearance of decelerations were assessed

Group Type ACTIVE_COMPARATOR

mobile phone

Intervention Type RADIATION

Each woman was subjected to 15 minutes CTG trace recording before using mobile phone and repeated while the phone is in the dialing mode for 10 minutes. Umbilical artery (UA) Doppler ultrasound was done after the initial CTG trace and was repeated 5 minutes after hanging up the mobile phone.

growth restricted group

70 woman with l growth restricted fetus will be subjected to 15 minutes CTG trace recording before using mobile phone and repeated while the phone is in the dialing mode for 10 minutes. Umbilical artery (UA) Doppler ultrasound will be done after the initial CTG trace and was repeated 5 minutes after hanging up the mobile phone. UA resistance indices, number of fetal kicks, the loss of acceleration and variability, and the appearance of decelerations

Group Type ACTIVE_COMPARATOR

mobile phone

Intervention Type RADIATION

Each woman was subjected to 15 minutes CTG trace recording before using mobile phone and repeated while the phone is in the dialing mode for 10 minutes. Umbilical artery (UA) Doppler ultrasound was done after the initial CTG trace and was repeated 5 minutes after hanging up the mobile phone.

Interventions

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mobile phone

Each woman was subjected to 15 minutes CTG trace recording before using mobile phone and repeated while the phone is in the dialing mode for 10 minutes. Umbilical artery (UA) Doppler ultrasound was done after the initial CTG trace and was repeated 5 minutes after hanging up the mobile phone.

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* aged 18 to 40 years pregnant between
* singleton fetus
* 32-38 weeks' gestation . They were classified into two groups. Group (A) included 120 women with normally growing fetuses. Group (B) included 70 women with growth-restricted fetuses.

Exclusion Criteria

* presence of medical disorders or obstetric complications (in group A), anomalous fetus and non-reactive fetal CTG in initial CTG trace severe oligohydramnios

Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes