Exam Three: too slow, too fast, too long diabetes Flashcards
issues
- too slow: dysfunctional, protracted, arrested
- too fast: precipitous (Under three hours from the start of regular contractions to birth of placenta)
- too soon: preterm (<37 weeks)
- too late: postdates (>42 weeks)
too slow labor causes
- dystocia
- dysfunctional
dystocia causing too slow labor
- lack of progress in labor
- Abnormal labor pattern due to any of the “Ps”:
1. Power
2. Passenger
3. Passageway
4. Position
5. Psyche/People
dysfunctional causing too slow labor
- Most common cause is a ‘dysfunctional’ contraction pattern (uncoordinated contractions)
- # 1 reason for Cesarean Birth
dystocia related to powers: Latent Phase Disorder: “can’t get going”
- Happens before the onset of active labor
- HYPERtonic Uterine Dysfunction– frequent and painful contractions that are not sufficient to cause the cervix to begin to change
1. Uncoordinated contractions in the midsection of the uterus instead of fundus—no downward pressure of fetus on cervix
2. Uterus may not relax completely between contractions - AKA “prodromal” labor
dystocia related to powers: Active Phase Disorders: “stalls out”
- Happens once enters active labor (≥ 6 cm with regular UCs)
- HYPOtonic uterine dysfunction–uterine contractions are not effective enough to continue making the cervix change: Montevideo units <200
-Protraction—slower than normal
-Arrest– stop making progress
1. Adequate contractions (MVU
> 200) for ≥ 4 hours
or
2. Inadequate contractions
(MVU < 200) with oxytocin
administration for ≥ 6
hours
causes of Active Phase Dysfunction
- Are contractions inadequate
- Is cephalopelvic disproportion (CPD) present?
- Is there a malposition (posterior, asynclitic)?
- Is there an intraamniotic infection (fever, tachycardia, fetal tachycardia, etc.)?
- Is the bladder full?
- Is patient exhausted or in unmanageable pain?
- Are they dehydrated?
- Is there something else?
interventions for active phase dysfunction when caused by inadequate contractions
- assess with IUPC (MVUs <200)?
- Pitocin or rupture membranes (AROM)
interventions for active phase dysfunction when caused by cephalopelvic disproportion (CPD) present
Use positions to maximize space
interventions for active phase dysfunction when caused by malposition
- Use frequent position changes
- Normal cardinal movements of baby produces OA babies
interventions for active phase dysfunction when caused by intraamniotic infection
- would see: fever, tachycardia, fetal tachycardia, etc
- Treat the infection
interventions for active phase dysfunction when caused by full bladder
- void/cath Q 2 hours
interventions for active phase dysfunction when caused by patient exhaustion or unmanaged pain
Consider pain medications
interventions for active phase dysfunction when caused by dehydration
- hydrate PO or IV
causes of latent phase dysfunction
- unknown usually
risks to latent phase dysfunction
- Fatigue, stress
- Dehydration
- Increased pain -uterine muscle anoxia and decreased coping
- Infection
treatment for latent phase dysfunction
- STOP it (therapeutic rest)- ambien, morphine sleep, Benadryl
OR
-START it (IOL/augmentation- AROM, Pitocin, nipple stimulation)
*consider impact fatigue can have on labor progression
*once they enter active labor they often progress normal
Dystocia Related to “Powers”: second stage
- Protracted– descent of fetus takes longer than expected
- Arrested– fetus stops descending
- Inadequate/ineffective pushing efforts: May be related to spinal/epidural nerve blocks or exhaustion
management of Dystocia Related to “Powers”: second stage
-Coach on pushing, encourage rest between
-Positioning—maximize space, utilize gravity
-Anesthesia to reduce epidural infusion rate
Dystocia Related to “Passenger”: Compound Presentation
- “Hand Presentation”: compound hand where the hand is down around head
-Longer labor
-Increased tears
-Increased c/s
Dystocia Related to the “Passenger”: Macrosomia
- Birth weight of more than 4000 grams (8#13oz)
- Fetus greater than 5000g (on US) is offered a c/s to reduce risks of shoulder dystocia (if GDM 4500 grams)
Dystocia Related to the “Passenger”: Macrosomia risk factors
- Gestational diabetes (GDM)
- BMI>30
- excessive weight gain
- maternal or FOB larger birth weight
- previous macrosomic baby
Dystocia Related to the “Passenger”: Macrosomia increased risk for
- Slow progress
- infection
- shoulder dystocia
- lacerations
- PPH
- need for assisted birth (VAVD, FAVD, C/S)
Dystocia Related To position
-Occiput posterior
-Asynclitic: babies head tilted to one side
-Breech
-Face, brow presentation
Dystocia Related To psyche/people
- stress
Dystocia Related to the “Passenger-Passageway”: Shoulder Dystocia
- After birth of head, the anterior shoulder remains lodged under the pubic bone and is unable to deliver
implications of Dystocia Related to the “Passenger-Passageway”: Shoulder Dystocia
- Fetal head fills with blood with no means for blood return –> hypoxia–> neuro damage –> death so prompt timing is critical (within minutes)
- Obstetrical emergency - Attempts to dislodge shoulder can cause injury to fetus:
-Brachial plexus injury (~10% are permanent)
-Fractured clavicles
risk factors for Shoulder Dystocia
- macrosomia
-labor dystocia
-vacuum/forceps
-GDM
-obesity
-postdates delivery
-previous shoulder dystocia
*High percentage of cases occur with NO RISK FACTORS
dangers of shoulder dystocia
- entrapment of the cord
- inability of child’s chest to expand properly
- severe brain damage or death if child is not delivered within minutes
Interventions for Shoulder Dystocia
- Be prepared BEFORE the birth!
-Recognize risk factors
-Notify team members – MD, charge nurse, neonatal staff
-Have stool positioned within reach
-Have extra RN at delivery to help/keep track of time - McRoberts’ Maneuver
- Suprapubic pressure
- Pressure over suprapubic bone –if you know position, push shoulder toward chest
-NO FUNDAL PRESSURE!!!! - Gaskin maneuver
- careful newborn exam: tone, moving upper extremities bilaterally, crepitus over clavicles
what is mcroberts maneuver
- hyperextend the legs- knees to ears
- Changes maternal pelvis angle
what is the gaskin maneuver
- changing the pt to hands and knees
what is the wood screw maneuver
- provider inserts fingers into vagina
- left hand goes to the front of posterior shoulder right hand to the back of the anterior shoulder and they try to rotate the fetus
Interventions for Shoulder Dystocia: Provider may incorporate other interventions
- Deliver posterior arm
- Woods Screw maneuver
- Episiotomy- make more room
- Shoulder shrug maneuver/remove posterior shoulder with fingers
- Zavanelli Maneuver-Pushing the head back into the uterus and rush to C/S!
too fast: Precipitous Labor & Birth
- Entire process of labor and birth < 3 hours long
- Cause: Strong contractions and/or low resistance in soft tissues
risk factors for Precipitous Labor & Birth
- Abruption (history of drug use–cocaine, methamphetamines, stimulants; seizure/eclampsia, HTN)
-multiparity
-very small fetal size
-previous precipitous birth
Precipitous Labor & Birth Possible Complications:
- Sudden (terrifying) birth and immediate postpartum/newborn period without provider
- Abruption (cause or effect)
- PPH
- Newborn
1. Hypoxia (diminished reserve)
2. Lower APGAR scores
3. Meconium-stained fluid
4. Trauma (facial bruising, cephalohematoma, fractured clavicle)
nursing care for Precipitous Labor & Birth
- Put on gloves
- Call for help and DO NOT LEAVE THE ROOM
- if provider is not able to make it in time, catch the baby, place skin to skin on mom, call for help
TOO SOON: Preterm Labor & Delivery
- Preterm labor (PTL): Labor that occurs between 20 and 36 6/7 weeks
- Preterm delivery (PTD): preterm labor results in delivery
- Prematurity is the #1 cause of neonatal mortality (0-28 days) in United States
Measures to Improve Birth Outcomes & Reduce Morbidity/Mortality: equity
- Eliminate racial disparities
- Remove barriers to obtaining quality care in underserved and rural communities– In the U.S. 150K babies are born to individuals living in maternity care deserts (no facilities with obstetric care/providers)
Measures to Improve Birth Outcomes & Reduce Morbidity/Mortality: access
-Protect comprehensive health care coverage
-Provide affordable, quality public health programs pre-conception
-Extend Medicaid coverage to at least 12 months postpartum
-Access to midwifery/Doula care services
-Group prenatal care and telehealth reimbursement
Measures to Improve Birth Outcomes & Reduce Morbidity/Mortality: prevention
-Advance our understanding of why individuals/infants are dying during pregnancy, birth, and postpartum (up to 12 months after birth)
-Support public health programs to improve health of birthing people and their babies
-Create paid family leave systems
-Support vaccinations and boost confidence in vaccines
-Reduce primary c-section in low-risk individuals (>37 weeks, singleton, cephalic, primigravida)
Major Health Problems for Preterm Babies
- All organ systems immature, maturational deficiencies
-Respiratory distress syndrome (RDS)
-Intraventricular hemorrhage (IVH)
-Patent ductus arteriosus
-Necrotizing enterocolitis (NEC)
-Retinopathy of prematurity (ROP) - Among extremely premature babies, just under half grow up with some form of neurological or developmental disability. Severe forms of disability were present in 23% of babies born at 22-25 weeks.
The Ethics of Prematurity:Who SHOULD We Try to Save?
- Some concepts to ponder:
-Uncertain prognoses, especially with extreme prematurity
-Considerable costs
-Long term physical, mental, emotional disabilities
-Value of disabled people in our society
- Important to have shared decision-making conversations with family members
Symptoms of Preterm Labor
- mimic common complaints of a normal, healthy pregnancy
-Back pain
-Pelvic pain
-Abdominal pain (uterine or GI)
-Menstrual like cramping
-Pelvic pressure
-Diarrhea
-Increased vaginal discharge
Risk Factors for Preterm Labor
-Previous preterm labor and delivery
-Multiple gestation
-H/O incompetent cervix: Cerclage in place
-Stress
-Age (<17 or > 35)
-Substance abuse
-Non-white race
-Anemia
-Infection
-Intimate partner violence
-Poor weight gain
-Low maternal weight
-Inadequate prenatal care
Diagnosis of Preterm Labor
- ≥ 6 contractions per hour with documented cervical change or
- Cervical dilation ≥ 2 cm and 75% effaced with a history of contractions
Screening tests used to guide PTL interventions:
- Sterile cervical exams
- Cervical length via trans-vaginal US
- > 3 cm = decreased risk of preterm labor at this time
- < 2 cm = increased risk of PTL that will progress to preterm birth - Fetal fibronectin (fFN)
- Use between 22-34 weeks GA when cervical length between 2-2.9 cm because most predictive
- High negative predictive value: if NEG < 1% chance of giving birth in next 7 days
- Low positive predictive value: if POS means nothing
- Collect via vaginal swab (before cervical exam/pelvic US)
- Test is altered by blood, lubricant, sex
Prevention of Preterm Labor
- Regular prenatal visit to identify and address risk factors
-Identify and treat maternal infections
-Assess for and promote adequate nutrition and weight gain
-Promote dental care
-Smoking/drug/alcohol cessation
-Decrease stress - Avoid unnecessary IOL-iatrogenic prematurity!
- Cerclage in women with history of incompetent cervix
- History of previous preterm birth
-Progesterone supplementation– from 16-36 6/7 weeks
-Daily vaginal progesterone OR
-Weekly IM progesterone injections
Preterm Labor Management
- tocolysis
- magnesium sulfate
- maternal corticosteroids
- antibitoics
Preterm Labor Management: tocolysis
- use of medications in patients 24-33 6/7 gestation to delay birth to allow for administration of corticosteroids or transport to higher level care
- Nifedipine, indomethacin, terbutaline