Uterine contractions Flashcards

1
Q

What do uterine contractions temporarily stop

A

Retroplacental pool of blood necessary for oxygen transfer or compress the umbilical cord

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2
Q

What are contraction parameters

A
  • relaxation time
  • contraction duration
  • contraction amplitude
  • contraction surface
  • contraction frequency
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3
Q

Manual palpation

A

1st & last part of the contraction may not be palpable

Duration may be estimated and may be less than actual contraction

Contraction frequency can be correctly assessed.

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4
Q

External tocography ( CTG)

A

Placed on the fundus
Detects myometrial contractility by a change in antero-posterior diameter of the abdomen resulting from uterine contractions
Shows contraction frequency

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5
Q

Myometrium

A

A phasic (more suited to movement) muscle

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6
Q

Uterine contractions

A

caused by the underlying electrical activity in the myometrial cells.

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7
Q

Internal tocography

A

Unaffected by maternal position

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