What is hypotonic uterine action?

1. Hypotonic Uterine Action – Uterine Inertia. This term is used when the uterine contractions are weak, short lived (duration), infrequent, irregular and shallow. The contractions are less painful and the uterus is well relaxed between contractions.

Also to know is, what is hypertonic uterine action?

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.Uterine hyperstimulation may result in fetal heart rate abnormalities, uterine rupture, or placental abruption.

Secondly, what is hypotonic uterus? hypotonic uterine dysfunction. The slowing or complete arrest of the progress of labor, caused by weak or infrequent contractions of the uterus. Synonym: secondary uterine inertia. See also: dysfunction.

Similarly, it is asked, what is Incoordinate uterine action?

If polarity between upper and lower segments is satisfactory, labour is likely to be easy, swift and progressive. If on the other hand, the reciprocity between the two segments is defective, the uterine action is said to be incoordinate and labour may be long, difficult and tedious.

What is colicky uterus?

Colicky uterus: incoordination of the different parts of the uterus in contractions. Hyperactive lower uterine segment: so the dominance of the upper segment is lost.

What does uterine hyperstimulation feel like?

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. Uterine hyperstimulation may result in fetal heart rate abnormalities, uterine rupture, or placental abruption. It is usually treated by administering terbutaline.

What is taking up of cervix?

Cervical effacement (also called cervical ripening) refers to a thinning of the cervix. It is a component of the Bishop score. As effacement takes place, the cervix then shortens, or effaces, pulling up into the uterus and becoming part of the lower uterine wall.

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].

What is uterine inertia?

Uterine inertia describes the failure of the uterus to expel a foetus normally and is a common cause of canine and feline dystocia. Uterine inertia can be primary or secondary.

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.

What is Couvelaire uterus?

Couvelaire uterus (also known as uteroplacental apoplexy) is a life-threatening condition in which loosening of the placenta (abruptio placentae) causes bleeding that penetrates into the uterine myometrium forcing its way into the peritoneal cavity.

What is uterine Hypertonus?

Uterine tachysystole is a condition of excessively frequent uterine contractions during pregnancy. Uterine hypertonus is described as a single contraction lasting longer than 2 minutes. Uterine hyperstimulation is when either condition leads to a nonreassuring fetal heart rate pattern.

What is constriction ring?

Constriction ring syndrome (CRS) is a congenital disorder with unknown cause. Because of the unknown cause there are many different, and sometimes wrong names. It is a malformation due to intrauterine bands or rings that give deep grooves in, most commonly, distal extremities like fingers and toes.

What is contraction ring?

A contraction ring is a spasmodic contraction of the lower portion of the uterus which usually occurs during the first phase of labour, but persists into the second stage. It is not the result of obstructed labour, but is itself the cause of obstructed labour.

What is cervical dystocia?

Medical Definition of Cervical dystocia Cervical dystocia: Difficult labor and delivery caused by mechanical obstruction at the cervix. Dystocia comes from the Greek "dys" meaning "difficult, painful, disordered, abnormal" + "tokos" meaning "birth."

How common is Bandl ring?

Introduction. Bandl's ring, also known as a pathological uterine ring, is a constriction between a woman's thickened upper contractile uterine segment and thinned lower uterine segment (LUS) during parturition [1, 2]. The incidence of Bandl's ring is suggested to be 0.02% or one in every 5000 live births [5].

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 are the causes of uterine Atony?

Risk Factors and Causes of Postpartum Hemorrhage Risk factors for uterine atony include uterine overdistention secondary to hydramnios, multiple gestation, use of oxytocin, fetal macrosomia, high parity, rapid or prolonged labor, intra-amniotic infection and use of uterine-relaxing agents.

What is a Bishop score in pregnancy?

Bishop score, also Bishop's score, also known as cervix score is a pre-labor scoring system to assist in predicting whether induction of labor will be required. The Bishop Score was developed by Professor Emeritus of Obstetrics and Gynecology, Dr. Edward Bishop, and was first published in August 1964.

What is labor augmentation?

Augmentation of labour is the process of stimulating the uterus to increase the frequency, duration and intensity of contractions after the onset of spontaneous labour. It has commonly been used to treat delayed labour when poor uterine contractions are assessed to be the underlying cause.

What is dystocia in labor?

23,100 (2015) Obstructed labour, also known as labour dystocia, is when the baby does not exit the pelvis during childbirth due to being physically blocked, despite the uterus contracting normally. Complications for the baby include not getting enough oxygen which may result in death.

What is dysfunctional labor?

Dysfunctional or prolonged labor refers to prolongation in the duration of labor, typically in the first stage of labor. Diagnosis of delay in labor is dependent on careful monitoring of uterine contraction intensity, duration and frequency, cervical dilation and descent of the fetus through the pelvis.