Chapter 16: Giving Birth Flashcards
The ____________ provides oxygen reserve for the fetus while the uterus is contracting.
placenta
Contraction cycle: term for period of rising activity
increment
Contraction cycle: two terms to describe the strongest point of the contraction
peak, acme
Contraction cycle: term for period of decreasing activity
decrement
Contraction cycle: term for the length of the contraction from beginning to end
duration
Contraction cycle: term for strength of contractions described by mild, moderate, or strong
intensity
Contraction cycle: term for the period between the end of one contraction and the beginning of the next
interval (resting tone)
Contraction cycle: term for the period from the beginning of one contraction to the beginning of the next
frequency
Assessment method for palpating a contraction
Place fingertips of one hand at the fundal portion
Palpated mild contractions feel like this body part
tip of nose
Palpated moderate contractions feel like this body part
chin
Palpated strong contractions feel like this body part
forehead
Palpated resting tone in between contractions feels like this
soft
Goal interval time period in seconds
60 seconds
Purpose of contractions
propel baby forward and through birth canal
This portion of the uterine body contracts actively
upper two thirds (upper uterus)
These portions of the uterus are passive during contractions
lower third (lower uterus), cervix
The upper portion of the uterus becomes (thicker, thinner) with contractions
thicker
The lower portion/cervix becomes (thicker, thinner) with contractions
thinner
Term for thinning and shortening of the cervix
effacement
Term for opening of the cervix
dilation
The cervix of the primigravida thins (before, while) it dilates
before
The cervix of the multigravida thins (before, while) it dilates
while
During a contraction, placenta blood flow is ____________, BP slightly ___________, and pulse _____________.
decreased, increases, decreases
During labor, the depth and rate of respirations ______________, increasing the risk for __________________.
increases, hyperventilation (ultimately respiratory alkalosis)
During labor, gastric motility is ____________. The woman in labor should avoid large amounts of __________.
decreased, sugar
During labor, the sensation of a full bladder is ____________, and the bladder fills ___________.
reduced, rapidly
Average blood loss during a vaginal birth is _________ mL
500
During pregnancy, labor, and after delivery, the woman has ____________ levels of clotting factors (fibrinogen)
elevated
Three protective mechanisms the fetus has to tolerate interruption of blood flow during contractions
fetal hemoglobin, fetal hematocrit, high cardiac output
During labor, fetal lung fluid _____________ to facilitate breathing after birth, which is aided by thoracic compression.
decreases
The Power of labor that is active during the FIRST phase of labor to move the fetus through the maternal pelvis
uterine contractions
The Power of labor that is active during the SECOND stage of labor to move the fetus through the pelvis
maternal pushing efforts
Before the mother starts pushing, she must be _____ dilated and ____ station
10 cm (fully), +2
The Passage for the birth of the fetus consists of the ______________ and its _______________.
maternal pelvis, soft tissues
_______ and __________ do not readily yield to the forces of labor, which makes the ______________ more important to the outcome of labor.
bones, joints, bony pelvis
This hormone increases and softens the cartilage that links the pelvic bones
relaxin
The Passenger contains these three things
fetus, membranes, placenta
Term for the fetal head changing shape (from movable bones due to sutures and fontanels) allowing its adaptation to the size and shape of the pelvis
molding
Term for the orientation of the long axis of the fetus to the long axis of the woman
fetal lie
Type of fetal lie in which the head or buttocks of the fetus enters the pelvis first
longitudinal lie
Type of fetal lie in which the long axis of the fetus is at right angles to the woman’s long axis
transverse lie
Type of fetal lie in which the fetus is at an angle between longitudinal and transverse lies
oblique lie
Term for the relation of fetal body parts to each other (degree of flexion or extension)
attitude
Term for the fetal part that enters the pelvis first
presentation (presenting part)
____________ cephalic presentation occurs when the fetal head is completely flexed; this is the most favorable because the smallest part of the head is pointing down
Vertex