What is hypertonic labor and how is it treated?

Publish date: 2022-09-28
Uterine hyperstimulation or hypertonic uterine dysfunction is a potential complication of labor induction. Uterine hyperstimulation may result in fetal heart rate abnormalities, uterine rupture, or placental abruption. It is usually treated by administering terbutaline.

Keeping this in view, what causes hypertonic contractions?

The mechanisms known to cause hypertonic contractions are either a rise in the frequency of the uterine pacemaker firing [5] as caused by oxytocic drugs [6] or incoordination [7] and/or hypercontractility of the myometrium as caused by paracervical block anaesthesia [8].

Similarly, why is Tachysystole dangerous? Tachysystole deprives a fetus of oxygen and occasionally leads to an emergency complication known as uterine rupture. Some of the most serious long-term outcomes for the baby include hypoxic-ischemic encephalopathy (HIE), cerebral palsy (CP), and seizure disorders.

Similarly, how is dystocia treated?

Fetal Dystocia. Fetal dystocia is abnormal fetal size or position resulting in difficult delivery. Diagnosis is by examination, ultrasonography, or response to augmentation of labor. Treatment is with physical maneuvers to reposition the fetus, operative vaginal delivery, or cesarean delivery.

What is hypotonic Labor dysfunction?

Hypotonic uterine dysfunction is more common and frequently responds to oxytocin. The contractions are synchronous but weak or infrequent or both.

What are hypertonic contractions?

Uterine hyperstimulation or hypertonic uterine dysfunction is a potential complication of labor induction. It is defined as either a series of single contractions lasting 2 minutes or more OR a contraction frequency of five or more in 10 minutes.

How is CPD diagnosed?

A physical examination that measures pelvic size can often be the most accurate method for diagnosing CPD. If a true diagnosis of CPD cannot be made, oxytocin is often administered to help labor progression. Alternatively, the fetal position is changed.

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.

What is a precipitous delivery?

Precipitous labor is extremely rapid labor and delivery. It is defined as expulsion of the fetus within less than 3 h of commencement of regular contractions [1].

What is uterine rupture?

Uterine rupture is spontaneous tearing of the uterus that may result in the fetus being expelled into the peritoneal cavity. Uterine rupture is rare. It can occur during late pregnancy or active labor. Uterine rupture occurs most often along healed scar lines in women who have had prior cesarean deliveries.

What is a prolonged contraction?

A tetanic contraction (also called tetanized state, tetanus, or physiologic tetanus, the latter to differentiate from the disease called tetanus) is a sustained muscle contraction evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate.

What is uterine Atony?

Uterine atony is a loss of tone in the uterine musculature. Normally, contraction of the uterine muscles during labor compresses the blood vessels and reduces flow, thereby increasing the likelihood of coagulation and preventing hemorrhage. Clinically, 75-80% of postpartum hemorrhages are due to uterine atony.

Can Oxytocin cause fetal distress?

Oxytocin can cause the uterus to become tetanic, which can compromise placental blood flow and cause fetal distress. The drug also has the potential for producing forceful contractions of the uterus before the cervix dilates completely, which could lead to uterine rupture and trauma to the infant.

What causes dystocia?

Dystocia of maternal origin may be caused by uterine inertia, small pelvic size, failure of cervical dilation, and uterine torsion. Failure of cervical dilation and uterine torsion are the most common causes of dystocia of maternal origin.

How can dystocia be prevented?

Help prevent dystocia by: Ensuring heifers are inseminated at the proper age and bodyweight. Selecting potential sires on the basis of known calving ease.

Those steps are:

  • Decrease its occurrence.
  • Decrease the impact of dystocia by good calving management practices.
  • Increase the level and quality of newborn calf care.
  • Why is shoulder dystocia an emergency?

    SHOULDER DYSTOCIA: AN OBSTETRIC EMERGENCY. In other cases, shoulder dystocia is anticipated because of extensive molding of the fetal vertex, a prolonged second stage of labor, or retraction of the fetal chin back onto the maternal perineum upon delivery of the head (“turtle sign”).

    How common is dystocia?

    Shoulder dystocia happens in about 1 in every 200 births. It's more common during a vaginal birth, but a baby's shoulder can also get stuck during a caesarean. Shoulder dystocia is a medical emergency.

    How do you say dystocia?

    Pronunciation
  • (General American) IPA: /d?sˈto???/
  • (Received Pronunciation) IPA: /d?sˈt????/
  • Hyphenation: dys?to?cia.
  • Which shoulder is delivered first?

    Depending upon the original position of the fetus, either the left or the right shoulder can be the anterior shoulder. It is known as the anterior shoulder as it faces the anterior of the mother. This distinction between the anterior and the posterior shoulder is important as the anterior shoulder is delivered first.

    Why is shoulder dystocia dangerous?

    Shoulder dystocia can cause other injuries including fractures of the baby's arm or shoulder. In the vast majority of cases, these heal without any problems. Sadly, in some situations, even with receiving the best care, a baby can suffer brain damage, if he or she is not getting enough oxygen and can even die.

    What is the turtle sign in labor?

    Shoulder dystocia. Shoulder dystocia is when, after delivery of the head, the baby's anterior shoulder gets caught above the mother's pubic bone. Signs include retraction of the baby's head back into the vagina, known as "turtle sign".

    Who is at risk for prolapsed cord?

    Emergent delivery, typically via cesarean delivery, is needed when umbilical cord prolapse is suspected. Maternal and fetal risk factors for cord prolapse include malpresentation, 5 6 7 8 second twin, 5 8 prematurity, 7 9 multiparity, 6 7 polyhydramnios, 7 and unengaged presenting part.

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