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63 Cards in this Set

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In normal labor, how long does the early phase last in nullip/multip?
Nullip:8.6hours
Multip: 5.3hours
According to Friedman, how long does the active phase last for nullip/multip?
Nullip: 4.9
Multip: 2.2
What is the mean amount of time the expulsion phase lasts in nullip/multip?
Nullip:54 min
Multip: 19min
When is the expulsion phase considered prolonged?
Unmedicated: over 2 hours (nullip) and over 1 hour (multip)

With Epidural: up to 2 hours for multips & 3 hours for nullips
What is considered a precipitous labor for N and M?
Nullip: >5cm/hr dilation
Multip:>10cm/hr
what are some complications of precipitous labor?
trauma to birth canal, fetal distress, and PPH
What is labor dystocia?
abnormal labor that results from problems with the power, passenger, and/or passage
When can FTP or FTD be determined?
After an adequate trial of labor has been achieved
What are protraction disorders?
slower than normal labor
What are arrest disorders?
cessation of progress
Who is at risk for first stage dystocias?
AMA
Nullips
Maternal anxiety
Multiple gestation
Intrauterine infections
Who is at risk for second stage dystocias?
Prolonged 1st stage
Large fetus
High station with complete dilation
Nullips
What characteristics of Nullips make them at risk for second stage dystocias?
short stature
>35 y/o
GA >41 wks
> 6hrs between epidural and full cervical dilation
fetal station above +2 at 10cms.
What 2 criteria should be met for dx of arrest?
Latent phase is complete
UC pattern exceeds 200MVU for 2 hours w/o cervical change
when does labor dysfunction happen?
when the power of the uterus is insufficient to effect the mechanisms of labor
How is the uterus weakened
Sepsis, prolonged labor
when is more uterine power needed?
When fetus is asynclitic, deflexed or posterior presentation
What is augmentation?
stimulation of uterine contractions when spontaneous ctx have failed to result in progressive cervical dilation or decent of the fetus
When should you consider augmentation?
When UC's <3 in 10min. intensity is <25mmhg or both
When determining labor adequacy, what is the only direct measure of UC?
IUPC
how are adequacy of ctx measured?
by having sufficient strength (MVU) in a defined period of time (10Min)
when is a dx of labor arrest appropriate?
when cervical dilation is not progressing with > or = to 150-200 mvu in 10min that has been consistent for 2-4 hours
What are the 3 distinct phases of the first stage?
Latent
Active
Deceleration
When is the latent phase?
from 0-3 or 4cm
When is the active phase?
from 3 or 4cm to 10cm
When is the deceleration phase?
9-10cm
What are some characteristics of the latent phase?
it is the most unpredictable and differs for nullips and multips
How long does the latent phase last for nullips?
Mean is 8.6 hours with a range of 1-44 hours
How long does the latent phase last for multips?
Mean phase is 5.3 hours with a .4-36 hour range
What does the management of the latent phase include?
accurately diagnosing labor & letting it happen (or intervening & hoping trouble doesn't happen!)
Once an accurate dx of labor is made, what is prolonged latent phase?
progressive cervical change that occurs at an inordinately slow pace
what is the period of time for prolonged latent phase?
Nullips: >20hours
Multips > 14 hours
What are some cx of prolonged latent phase?
unripe cervix, false labor, sedation, uterine inertia
What problems are encountered by the prolonged latent phase?
maternal fatigue/exhaustion d/t lack of sleep
maternal dehydration that can lead to contractures and contraction patterns that are problematic
What does management of the latent phase include?
support/encouragement
hydration
rest
augmentation with oxytocin
What is the mean time for active phase?
nullips: 4.9hours (range .8-34)
Multips: 2.2 (range of .3-15)
Once in active phase, how fast will the cervix change
Nullip: 1.2cm/hr
Multip: 1.5cm/hr
how long can the deceleration phase take?
up to 2 hours
What are some abnormalities that occur with dilation?
secondary arrest of cervical dilitation
Protracted active phase
When does secondary arrest happen?
whe the labor has entered the active phase and progress stops (no change for 2 hours)
When does a protracted active phase occur?
when the labor has entered the active phase and progress is made, but less than expected
What is the general guideline for progress?
That the cervix should dilate by 1cm Q2 hours regardless of parity
What are causes of dilatation abnormalities?
*Ineffective contractions
*Fetal malposition
*Interventions/stress
What are ineffective contractions?
ctx that space out or have less strength
what cx ineffective ctx?
*maternal fatigue,
*pain (catacholamine response),
* overmedication in either dose or timing
What is the second stage of labor?
the stage of fetal expulsion
Whta is the mean time of the second stage?
Nullip: 57 min (range .5-5hr)
Multip:24 min (range 0-3hr)
How fast is decent in second stage?
no less than 1cm station/hour
What are abnormalities in fetal decent?
*Arrest of decent
*Protracted decent
What is arrest of decent?
the fetus stops decending following being complete
What is protracted decent?
there is slow decent outside of the nml range (<1cm/hr in nullips, <2cm hr in multips)
what is the general guideline during the second stage?
the fetus should be born 2hours following complete dilation in the non-aesthetized mother (3 with epidural)
What are cx of decent abnormalities?
*fetal position/malpresentation/size
*ineffective ctx
*ineffective materal effort
*Medications
What are the hallmarks of active mgmt of labor?
*accurate dx of labor
*1:1 midwifery mgmt
*Aggressive assessment and mgmt if labor slows
According to O'Driscoll, what makes a dx of labor?
*regular painful ctx
*complete effacement with or without dilation
*bloody show
*SROM
What is a minimally interventive strategy?
Hydration
What does Hydration do during labor?
increased fluids improve skeletal muscle performance during prolonged exercise
How many cc/hr is recommended for hydratiom?
250cc/hr is better than 125cc/hr
What are some non-interventive mgmt strategies?
Ambulation
Warm water immersion
Castor oil
stripping membranes
What are the claims with ambulation?
That it shortens labor, decreases pain, decreases use of meds, improves apgar scores
What does ambulation do for the mother?
changes the perception of herself and her labor
What does ambulation do?
prevents stagnation and may assist in effective fetal rotation
Once admitted, when should fht be done when ambulating?
Q1 hr during latent phase,
Q15-30min during active phase