Exam 1 Flashcards
There are _________ theories of labor.
four (4)
This theory of labor states that since all hollow organs have maximum capacity, the child eventually needs to be expelled by the body.
Uterine stretch theory
This theory states that cervical pressure causes the stimulation of the posterior pituitary gland which, in turn, releases a hormone responsible for labor contractions.
Oxytocin theory
This theory is based on the deprivation of a hormone that is believed to inhibit uterine motility. As pregnancy progresses, the body produces less and less of this hormone which causes eventual uterine contractions.
Progesterone Withdrawal / Progesterone Deprivation Theory
This theory states that there is an increase of a certain substance (not oxytocin) which, accompanied by a decrease in progesterone, increases uterine contractions and thus initiates labor.
Prostaglandin theory / Rising Fetal Cortisol Level
The advanced age of a certain fetal organ causes a decreased supply of blood to the uterus - thereby initiating labor.
Theory of Aging Placenta
- a premonitory sign of labor
- also known as nesting
- is the descent of the fetal presenting part 10 to 14 days before labor
- occurs earlier for primipara subjects because of their tighter abdominal muscles
- usually occurs on the day of labor for multipara subjects
- fundal height decreases
Lightening
- the cervix becomes as soft as butter
- accompanied by cervical dilation
Cervical ripening
- accompanied by an increase of maternal epinephrine
- epinephrine increase is attributed to decreased progesterone
Activity increase
- this is the result of fluid and water loss attributed to the decrease in progesterone levels
Weight loss (1 to 3 lbs)
- this happens when cervical mucus is expelled due to cervical compression
Mucus plug expulsion
- this results from the action of relaxin which allows for the expansion and organ stretching to accommodate delivery
- digestion is slowed
Backache
These are contractions before labor.
Braxton Hicks contractions
TRUE OR FALSE LABOR
Irregular contractions
FALSE LABOR
TRUE OR FALSE LABOR
Contraction interval shortening
TRUE LABOR
TRUE OR FALSE LABOR
Increase in pain intensity
TRUE LABOR
TRUE OR FALSE LABOR
Decrease in pain intensity when walking
FALSE LABOR
TRUE OR FALSE LABOR
Decrease in pain when lightly sedated
FALSE LABOR
TRUE OR FALSE LABOR
Bloody show
TRUE LABOR
TRUE OR FALSE LABOR
Cervical dilation
TRUE LABOR
TRUE OR FALSE LABOR
Pain is felt in the abdomen
FALSE LABOR
- pain in true labor is felt from the back to the abdomen due to the fallopian tubes
This means that contractions occur over a certain period of time repeatedly.
Regularity
This refers to the number of contractions in a certain period.
Frequency
This is the time span between the end of one contraction to the beginning of another contraction.
Interval
This is the time span between the beginning of one contraction to the end of the same contraction.
Duration
These are the 5 Ps of labor
- Passageway
- Passenger
- Position of the fetus
- Power
- Psyche
This refers to the route a fetus must travel from the uterus to the cervix and vagina to the external perineum.
Passageway
These are two innominate bones which are just three bones fused into one. Name the three.
- Ileum
- Ischium
- Pubis
This is the bone used and is referred to as landmark zero.
Ileum
This is the bone that we sit on.
Ischium
This is the point from the sacrum to the superior pelvis. Its narrowest position is antero-posterior.
Pelvic Inlet
This is above the pelvic inlet.
False pelvis
This is the point from the sacrum to the inferior pelvis.
True pelvis
This is the point from the coccyx to the inferior pubis. Its narrowest portion is transverse.
Pelvic outlet
These pelvic types are suitable for vaginal birth.
- Gynecoid
- Anthropoid
- pelvic type
- rounded inlet with adequate diameters
- adequate midpelvis diameters with parallel side walls
Gynecoid
- pelvic type
- heart shaped inlet with short posterior sagittal diameter
- arrest of labor is frequent
Android
- pelvic type
- oval inlet with long anteroposterior diameter
- midpelvis diameters are adequate
Anthropoid
- pelvic type
- oval inlet with long transverse diameter
- midpelvis diameters are reduced
Platypelloid
This is the progressive thinning of the cervix.
Cervical effacement
This refers to the progressive enlargement of the cervix which begins from the size of one’s fingertips to up to ten centimeters.
Cervical dilation / Cervical dilatation
These soft tissue organs are part of the fetal passageway.
- Uterus
- Cervix
- Vagina
- fetal skull landmark
- fetal chin
Mentum
- fetal skull landmark
- known as the brow
- area over the frontal bone
Sinciput