Mobile Phone Effects on Umbilical Artery Doppler and Heart Rate Tracing

Study Overview
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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.

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

Conditions
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Umbilical Artery Doppler, Fetal Heart Rate Tracing

Intervention / Treatment
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* Radiation: mobile phone


Participation Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: normal growth<br>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 | Radiation: mobile phone<br>* 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.<br>|
| Active Comparator: growth restricted group<br>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 | Radiation: mobile phone<br>* 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.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| umbilical artery doppler |  | 5 minutes after hanging up the mobile phone | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| fetal heart rate tracing |  | 10 minutes after phone is in the dialing mode for | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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MOBILE PHONE ON AND IN AND, UMBILICAL ARTERY DOPPLER, FETAL CARDIOTOCOGRAPHY, GROWTH RESTRICTED FETUS, NORMAL GROWTH FETUS