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Completed

NCT Number: NCT02445261

Mobile Phone Effects on Umbilical Artery Doppler and Heart Rate Tracing

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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Key information

Conditions

Umbilical Artery Doppler Fetal Heart Rate Tracing

Age range

18 year–40 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Ahmed Maged, Cairo, Egypt

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

mobile phone

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.

Primary outcomes

  1. umbilical artery doppler

    Time frame: 5 minutes after hanging up the mobile phone

Secondary outcomes

  1. fetal heart rate tracing

    Time frame: 10 minutes after phone is in the dialing mode for

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Official study title

The Effects of Mobile Phone on Umbilical Artery Doppler and Fetal Cardiotogogrphy in Normal and Gowth Restricted Fetuses

Important dates

Study start
2015
Primary completion
2017
Study completion
2018
First posted
May 15, 2015
Registry last updated
Jan 25, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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