Will a 24-Hour ECG Monitor Affect My Baby During Pregnancy? - Obstetrics and Gynecology

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Electrocardiogram (ECG or EKG) installation


Hello Doctor: I am currently about 10 weeks pregnant and have been experiencing symptoms of chest tightness and shortness of breath since becoming pregnant.
The cardiologist has recommended that I wear a portable 24-hour Holter monitor to check for any heart issues.
Could you please let me know if this monitor will have any effects on the baby? Thank you.

CHEN, 30~39 year old female. Ask Date: 2014/04/03

Dr. Lü Lizheng reply Obstetrics and Gynecology


The 24-hour Holter monitor is a type of receiver that captures the weak electrical signals emitted by the heart.
It does not generate additional energy and does not emit radiation, making it safe and not harmful to the fetus.
Sincerely, Dr.
Li-Cheng Lu, Taoyuan General Hospital.

Reply Date: 2014/04/03

More Info


When it comes to monitoring your heart health during pregnancy, particularly with the use of a 24-hour ECG (electrocardiogram) monitor, it’s understandable to have concerns about the potential effects on your developing baby. However, based on current medical knowledge and practices, I can assure you that using a portable ECG monitor is considered safe for both you and your baby.

The 24-hour ECG monitor, often referred to as a Holter monitor, is a device that records the electrical activity of your heart over a full day. It is designed to capture any irregularities in heart rhythm that may not be detected during a standard ECG performed in a doctor's office. The device itself is non-invasive and works by using electrodes placed on your skin to detect the heart's electrical signals. Importantly, it does not emit any radiation or harmful energy, which means it poses no risk to your fetus.

Pregnancy can bring about various physiological changes, including increased blood volume and changes in heart rate and rhythm. Symptoms like chest tightness or shortness of breath can occur due to these changes, but they can also be indicative of underlying conditions that may need to be addressed. Therefore, monitoring your heart health is crucial, especially if you are experiencing concerning symptoms.

In terms of safety, the American College of Obstetricians and Gynecologists (ACOG) supports the use of non-invasive monitoring techniques during pregnancy, as they do not pose risks to fetal development. The electrodes used in a Holter monitor are typically adhesive pads that stick to the skin and are safe for use during pregnancy. They do not interfere with the normal development of the fetus.

If you have further concerns about the procedure or the device, it’s a good idea to discuss them with your healthcare provider. They can provide you with detailed information about how the monitor works, what to expect during the monitoring period, and how the data will be used to assess your heart health. Additionally, they can reassure you about the safety protocols in place to protect both you and your baby during this process.

In conclusion, using a 24-hour ECG monitor during your pregnancy is a safe and effective way to monitor your heart health without posing any risk to your baby. It is essential to prioritize your health, as maternal well-being directly impacts fetal health. If you continue to experience symptoms or have any other concerns, do not hesitate to reach out to your healthcare provider for further evaluation and support. Your health and the health of your baby are of utmost importance, and taking proactive steps to monitor and manage your symptoms is a responsible approach.

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