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Theories of Labor Onset in Nursing and Midwifery

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Theories of Labor Onset in Nursing and Midwifery

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Questions and Answers

According to the Fetal Adrenal Response theory, what initiates labor contractions?

Hormones from the fetal adrenal and pituitary glands (correct)

Uterine distention

Hormones from the maternal pituitary gland

Oxytocin production by the placenta

What effect does oxytocinase have on uterine contractions, according to the Oxytocin Stimulation theory?

Decreases maternal pituitary hormone production

Inhibits uterine contractions (correct)

Increases fetal adrenal hormone production

Stimulates uterine contractions

As per the Uterine Stretch theory, what stimulates uterine contractions?

Hormones from the maternal pituitary gland

Fetal adrenal hormone production

Oxytocin production by the placenta

Distention of the uterus (correct)

Which theory proposes that the uterus becomes increasingly sensitive to oxytocin as pregnancy nears term?

Oxytocin Stimulation theory Signup and view all the answers

According to the Fetal Adrenal Response theory, what is responsible for initiating labor contractions?

Fetal adrenal and pituitary glands Signup and view all the answers

What causes the uterus to contract and empty itself, according to the Uterine Stretch theory?

Uterine distention Signup and view all the answers

What is the mechanism by which progesterone helps to maintain pregnancy?

By relaxing the smooth muscles of the uterus Signup and view all the answers

What is the role of prostaglandin in initiating labor according to the Prostaglandin Theory?

It initiates labor by promoting uterine contractions Signup and view all the answers

What is the impact of increased arachidonic acid in the amniotic fluid during labor?

Increased production of prostaglandin Signup and view all the answers

According to the Theory of the Aging Placenta, what allows the concentration of prostaglandin and estrogen to rise steadily?

Decreased efficiency of the placenta Signup and view all the answers

What are the preliminary signs of labor related to increased uterine activity?

Stronger, longer, and more frequent contractions and significant degree of effacement Signup and view all the answers

What is the impact of 'Lightening' before or during labor?

Relief of dyspnea and increased vaginal discharge Signup and view all the answers

What is 'Floating' in the context of labor?

When the head is still moveable above the pelvic inlet on palpation Signup and view all the answers

What is 'Engagement' in the context of labor?

The descent of the biparietal plane of the fetal head to a level of the ischial spine Signup and view all the answers

What is 'Fixation' in the context of labor?

'Lightening' settling of presenting part to pelvic brim or inlet Signup and view all the answers