Asked by: Cicero Pinzon
family and relationships pregnancy

How does CTG work?

Last Updated: 22nd June, 2020

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How does cardiotocography work? CTG uses sound waves called ultrasound to detect the baby's heart rate. Ultrasound is a high-frequency sound that you cannot hear but it can be sent out (emitted) and detected by special machines. Ultrasound travels freely through fluid and soft tissues.

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In this way, how long does CTG monitoring take?

5.2 Duration and frequency of CTG monitoring The maximum time for an Oxford CTG is 60 minutes. Monitoring frequency depends on the individual clinical risk confirmed by cardiotocography. It can range from a single reading done on an outpatient basis to several readings per day to continuous monitoring.

Furthermore, how do you read a CTG contraction? The red indicator is showing the mother's contractions. The fetal heart rate is usually on the top of a computer screen, with the contractions on the bottom. Graph paper that is printed has the fetal heart rate to the left and the contractions to the right.

Beside this, why CTG is done?

Cardiotocography (CTG) is used during pregnancy to monitor the fetal heart and contractions of the uterus. It is most commonly used in the third trimester. Its purpose is to monitor fetal well-being and allow early detection of fetal distress.

Does CTG harm baby?

Technology known as CTG - cardiotocogram tracing - checks an unborn baby's heart rate for signs of fetal distress. This is caused if the oxygen supply to a baby in the womb is reduced or blocked off. If this happens it can lead to rapid brain damage and death.

Related Question Answers

Vibeke Bonilla

Professional

Do Braxton Hicks show up on monitor?

Fake Contractions (Braxton Hicks)
They look real on a uterine contraction monitor. They feel real. But they're not called real. The difference being that they are irregular contractions, and they don't cause your body to go into labor or your cervix to dilate.

Coman Rahman

Professional

What is normal fetal heart rate?

A normal fetal heart rate (FHR) usually ranges from 120 to 160 beats per minute (bpm) in the in utero period. It is measurable sonographically from around 6 weeks and the normal range varies during gestation, increasing to around 170 bpm at 10 weeks and decreasing from then to around 130 bpm at term.

Fran├žais Govorin

Professional

What do Toco numbers mean on Fetal monitor?

Cardiotocography (CTG) is a technical means of recording (-graphy) the fetal heartbeat (cardio-) and the uterine contractions (-toco-) during pregnancy, typically in the third trimester. The machine used to perform the monitoring is called a cardiotocograph, more commonly known as an electronic fetal monitor.

Jonan Chloe

Explainer

What number is considered a contraction?

Contractions in active labor generally last between 45 to 60 seconds, with three to five minutes of rest in between. In transition, when the cervix dilates from 7 to 10 centimeters, the pattern changes to where contractions last 60 to 90 seconds, with just 30 seconds to 2 minutes of rest between.

Massaer Jernosek

Explainer

Are variable decelerations normal?

Variable decelerations happen when the baby's umbilical cord is temporarily compressed. This happens during most labors. It's considered normal if they happen before delivery and are accompanied by accelerations as well.

Janett Punnoose

Explainer

What is fetal distress?

Fetal distress is an emergency pregnancy, labor, and delivery complication in which a baby experiences oxygen deprivation (birth asphyxia). This may include changes in the baby's heart rate (as seen on a fetal heart rate monitor), decreased fetal movement, and meconium in the amniotic fluid, among other signs.

Abdelhamid Turu

Pundit

How early can you have a CTG?

(CTG's between 26 – 28 weeks require senior obstetrician decision) CTG should NOT be undertaken prior to 28 weeks for reduced fetal movements.

Ot Anula

Pundit

What does a CTG scan show?

Cardiotocography (CTG) is a technical means of recording the fetal heartbeat and the uterine contractions during pregnancy. The machine used to perform the monitoring is called a cardiotocograph, more commonly known as an electronic fetal monitor (EFM).

Yueqin Zoppi

Pundit

Is CTG necessary?

In a normal, low-risk delivery, CTG is not usually needed. The midwife will listen to your baby's heart rate from time to time to check it is normal. However, in certain situations, continual monitoring with CTG is advised. You pass fresh blood whilst in labour.

Amparo Wietstruck

Pundit

How strong do contractions get?

It begins when your cervix starts to open (dilate) and ends when it is completely open (fully dilated) at 10 centimeters. When the cervix dilates from 0 to 3 or 4 centimeters, contractions get stronger as time progresses. Mild contractions begin at 15 to 20 minutes apart and last 60 to 90 seconds.

Romarey Ghezzi

Pundit

What is the normal heart rate of fetus?

Current international guidelines recommend for the normal fetal heart rate (FHR) baseline different ranges of 110 to 150 beats per minute (bpm) or 110 to 160 bpm.

Kathline El Aissati

Teacher

How do you count contractions?

When timing contractions, start counting from the beginning of one contraction to the beginning of the next. The easiest way to time contractions is to write down on paper the time each contraction starts and its duration, or count the seconds the actual contraction lasts, as shown in the example below.

Zeinabou Luzemann

Teacher

How do hospitals monitor contractions?

The monitoring is usually performed in a doctor's office or hospital. A nurse will wrap a belt around your waist and attach it to a machine called a tocodynamometer. The machine records the frequency and length of your contractions. Your doctor may also recommend monitoring your contractions at home.

Fayssal Huacuja

Teacher

What do contractions feel like?

Some say labor contractions feel a bit like menstrual cramps at first, but then they intensify. Then, contractions feel like a dull ache paired with pelvic pressure. The discomfort moves from the top of the belly to the bottom—think of it as pushing your baby down and out.

Theresia Tsalyhin

Teacher

What is reactive CTG?

"Reactive" is defined as the presence of two or more fetal heart rate accelerations within a 20-minute period. "Non-reactive" is defined as fewer than two adequate accelerations during a prolonged period, which may be over an hour.

Kiana Monaut

Reviewer

What is variability in fetal heart rate?

Baseline FHR Variability
Baseline variability is defined as fluctuations in the fetal heart rate of more than 2 cycles per minute. No distinction is made between short-term variability (or beat-to-beat variability or R-R wave period differences in the electrocardiogram) and long-term variability.

Hunaida Lahssini

Reviewer

How many minutes apart are real contractions?

The contractions become more regular until they are less than 5 minutes apart. Active labor (the time you should come into the hospital) is usually characterized by strong contractions that last 45 to 60 seconds and occur three to four minutes apart.

Florida Oldenburg

Reviewer

How do you teach contractions?

Demonstrate the concept of contractions by writing he is on a piece of paper, or use letter tiles if you have them. Cross out the i and replace it with an apostrophe. Read the new word to your student to show how the pronunciation changes from he is to he's. Explain that an apostrophe is a type of punctuation mark.

Randhir Wernink

Reviewer

Which line shows contractions?

Certain patterns can show how your baby is handling labor. The bottom line shows your contractions. Comparing your baby's heartbeat with your contractions shows how your baby is handling the labor. Your doctor will watch to make sure your baby's heartbeat does not get too low during your contractions.