How do I read my FHR
Andrew Campbell
Updated on April 22, 2026
When you’re looking at the screen, the fetal heart rate is usually on the top and the contractions at the bottom. When the machine prints out graph paper, you’ll see the fetal heart rate to the left and the contractions to the right. Sometimes it’s easier to read printouts by looking at them sideways.
How do you calculate FHR?
Instantaneous fetal heart rate (FHRi) values (expressed in beats per minute – bpm) are calculated for each cardiac cycle according to formula: FHRi [bpm] = 60000/Ti [ms]. The most often used noninvasive acquisition method is the Doppler ultrasound (US) technique [1,2].
When should I assess my FHR?
The fetal heart rate must be assessed before, during, and after a contraction. The fetal heart rate assessed before, during and after a contraction is called the fetal heart rate pattern. This provides important information on the fetal condition.
What is normal fetal heart rate variability?
The normal FHR tracing include baseline rate between 110-160 beats per minute (bpm), moderate variability (6-25 bpm), presence of accelerations and no decelerations.What is tacky systole?
Uterine tachysystole is a condition of excessively frequent uterine contractions during pregnancy. … Uterine tachysystole is defined as more than 5 contractions in 10 minutes, averaged over a 30-minute window. Uterine hypertonus is described as a single contraction lasting longer than 2 minutes.
What causes tachysystole?
Perhaps the most common cause for tachysystole is the administration of too much Pitocin or oxytocin, resulting in overstimulation.
What is IUPC in pregnancy?
An intrauterine pressure catheter (IUPC) is a device placed into the amniotic space during labor in order to measure the strength of uterine contractions. External tocodynamometers are used to measure tension across the abdominal wall and detect only contraction frequency and duration.
What number do contractions go up to?
Contractions can be described by frequency, duration, strength (amplitude), uniformity, and shape. During normal labor, the amplitude of contractions increases from an average of 30 mm Hg in early labor to 50 mm Hg in later first stage and 50 to 80 mm Hg during the second stage.What do you give for tachysystole?
It is possible that the situation will become more severe very quickly. Treatments for tachysystole and fetal oxygen deprivation include placing the mother in the left lateral position, giving her oxygen, and increasing her IV fluids. Sometimes, additional medications can be given for fetal resuscitation.
Can you walk around with an IUPC?Research has also shown that walking and upright positions positively influence the progress of labor. With IUPC, mobility is seriously hampered as these women are confined to bed because the catheter can fall out, when they walk around.
Article first time published onWhat is a Toco reading?
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.
What happens when you have too many contractions?
When contractions are too long or very close together, the placenta has insufficient time to recharge, and the infant may be deprived of oxygen. This can result in birth injuries, such as cerebral palsy, birth asphyxia, and intellectual and developmental disabilities.
How long should a contraction last?
A contraction is when the muscles of your uterus tighten up like a fist and then relax. Contractions help push your baby out. When you’re in true labor, your contractions last about 30 to 70 seconds and come about 5 to 10 minutes apart. They’re so strong that you can’t walk or talk during them.
How many contractions is too many?
For most international obstetrical societies, 5 contractions per 10 min averaged over 30 min is considered as the upper limit of normal uterine activity. We hypothesize that it might be safer to adopt an upper limit of 4 contractions per 10 min.
What is a fast birth called?
Precipitous labor, also called rapid labor, is defined as giving birth after less than 3 hours of regular contractions. 1 Sometimes it’s also called precipitous labor if labor lasts anywhere under 5 hours. Although it might seem like a good thing, rapid labor can also carry risks and drawbacks.
What does Oxytocin do to FHR?
The most important side effect of oxytocin infusion is uterine hyper-stimulation, which has been shown to occur in more than 30% of women induced with oxytocin [4, 5]. By causing uterine hyper-stimulation, oxytocin may lead to or aggravate an abnormal fetal heart rate, contributing to neonatal acidosis.
Why is uterine Tachysystole bad?
The presence of tachysystole increases the chance of neonatal morbidity. In addition, excessive uterine activity has the potential to directly affect the uterus, especially if a prior cesarean section was performed, because the weakened tissue from the uterine scar is vulnerable.
What early labor feels like?
Labor contractions usually cause discomfort or a dull ache in your back and lower abdomen, along with pressure in the pelvis. Contractions move in a wave-like motion from the top of the uterus to the bottom. Some women describe contractions as strong menstrual cramps.
What does baby do during contractions?
The contractions of these muscles pull on the cervix and help to open it and put pressure on the baby, helping the baby move downward. Pressure from the baby’s head against the cervix during contractions also helps to thin and open the cervix.
What first time moms should expect during labor?
Contractions during early labor will feel mild, like deep menstrual cramps, and will be irregular. Early labor helps soften, shorten, and thin your cervix. It can start a few days or a few hours before birth.
What is IUP on a baby monitor?
An intrauterine pressure catheter (IUPC) is a device placed inside a pregnant woman’s uterus to monitor uterine contractions during labor. During labor, a woman’s uterus contracts to dilate, or open, the cervix and push the fetus into the birth canal.
How is IUPC calculated?
It is calculated by internally (not externally) measuring peak uterine pressure amplitude (in mmHg), subtracting the resting tone of the contraction, and adding up the numbers in a 10-minute period. Uterine pressure is generally measured through an intrauterine pressure catheter.
How many Toco is a contraction?
VariableMeanRangeDuration of monitoring (min)13748.6 – 345.9IUPC contractions38.38 – 95EHG contractions37.78 – 94Toco contractions26.41 – 64
How do you read a Toco contraction monitor?
When you’re looking at the screen, the fetal heart rate is usually on the top and the contractions at the bottom. When the machine prints out graph paper, you’ll see the fetal heart rate to the left and the contractions to the right. Sometimes it’s easier to read printouts by looking at them sideways.
What is the Dawes Redman criteria?
The Dawes/Redman criteria in Huntleigh’s system is the foundation of an automated analysis of the fetal heart rate which alerts after 60 minutes if not all the criteria are fulfilled [1]. The first analysis is made after 10 minutes and if all the criteria are met, the system indicates that the fetus is healthy.
How do you know the difference between Braxton Hicks and real contractions?
Braxton-Hicks contractionsReal contractionsHow do they feel?Like a tightening or squeezing, but not usually painfulLike a tightening or cramping that comes in waves, starting in the back and moving to the front, getting more intense and painful over time.
What are some signs that labor is nearing?
- Weight Gain Stops. Some women lose up to 3 pounds before labor thanks to water breaking and increased urination. …
- Fatigue. Commonly, you will feel exhausted by the end of the third trimester. …
- Vaginal Discharge. …
- Urge to Nest. …
- Diarrhea. …
- Back Pain. …
- Loose Joints. …
- The Baby Drops.
What are signs that Labour is near?
- Strong, frequent contractions. …
- Bloody show. …
- Belly and lower back pain. …
- Water breaking. …
- Baby drops. …
- Cervix begins to dilate. …
- Cramps and increased back pain. …
- Loose-feeling joints.
Can you sleep through contractions?
Our general rule is to sleep as long as possible if you’re starting to feel contractions at night. Most of the time you can lay down and rest during early labor. If you wake up in the middle of the night and notice contractions, get up and use the bathroom, drink some water, and GO BACK TO BED.
What does it mean when my belly gets hard during pregnancy?
If you’re in your second or third trimester of pregnancy and you notice that sometimes your pregnant belly gets very hard, feels tight, and even causes mild discomfort, you’re probably experiencing Braxton-Hicks contractions.
Why does stomach tighten during pregnancy?
Your stomach may feel tight in your first trimester as your uterus stretches and grows to accommodate your growing fetus. Other sensations you may experience include sharp, shooting pains on the sides of your abdomen as your muscles stretch and lengthen.