exam 2 Flashcards
purpose and use of fetal monitoring in labor
- ID signs of fetal well-being or compromise
- assess both FHR and UC’s
- no method of fetal assessment can ID every compromised fetus
- poor predictive value
- low tech approach (intermittent auscultation (doppler)
- high tech approach continuous monitoring
fetal monitoring as a major role for medical malpractice
- documentation is key (nurse’s must document and prove standard of care was met)
- nurse should identify abnormal/non-reassuring findings, intervene and report to MD/CNM in timely manner
types of fetal and uterine monitoring
- auscultation and palpation for intermittent auscultation
- ultrasound and tocodynamometer (TOCO) external EFM
- internal spiral electrode (FSE) and intrauterine pressure catheter (IUPC) (internal EFM)
fetoscope or doppler
- peform leopold’s manuevers and place doppler over area of maximal intesity of fetal heart tones
- palpate maternal artery at same time
- determine relationship of contraction and FHR by palpating for contractions during the FHR auscultation
- count FHR between cotraction for at least 30-60 seconds to determine baseline
- determine differences between baseline FHR and response to contraction
external fetal monitor parts
- ultrasound transducer: recevies waveforms from fetal heart interpreted by the computer in the fetal montior to produce sound and visual tracing to reflect FHR
- toco- strain gauge that detects skin tightness or contour changes resulting from UC’s
- monitor paper
internal electronic fetal and uterine monitoring
- uses fetal scalp electrode (FSE) or internal scalp electrode applied to fetus presenting part to directly detect FHR
- internal electronic uterine monitoring involves an IUPC placed in uterine cavity to directly measure contractions
- membranes must be ruptured
- needs this when troubleshooting methods that do not alter the quality of tracing, maternal obesity, lack of progress in labor
- contraindication: infections, placenta previa, undiagnosed vaginal beleding
monitoring fetal paper
- each dark vertical line represents 1 minute and each lighter vertical line represents 10 seconds
- FHR recorded on top fird in bpm while UC recorded on lower grid in mmHg with IUPC and relative height for TOCO
- thin vertical lines (or boxes) = 10 seconds apart
- heavy vertical lines = 1 minute apart
interpretation of FHR baseline
- baseline rate
- baseline variability
interpreetation of periodic and episodic changes
- accelerations
- decels
interpretation of uterine activity
- frequency
- duration
- intensity
- resting tone
- relaxation time between UCs
category I FHR
- normal
- predictive of well-oxygenated nonacidotic fetus w/ normal fetal acid-base balance
- routine following and no action needed
category II FHR
- intermediate
- do not predict abnormal acid-base balance status
- requires eval, continued surveillance, and reevaluation in context of clinical circumstances
category III FHR
- abnormal
- predictive of abnormal acid-base balance
- requires prompt intervention and depending on situation efforts to resolves should be expedited include intrauterine resuscitation or immediate birth
FHR baseline
- mean FHR in 10 minute period rounded to nearest 5pm
- should be between 110-160
fetal tachycardia
- FHR above 160bpm that lasts for at least 10 minutes and often accompanied by a decreased or absent baseline variability
- may be a sign of early fetal hypoexmia
- if persists above 200-220bpm, fetal demise may occur
causes of fetal tachycardia
- maternal: fever, infection, anxiety, dehydration, anemia, meds, ilicit drugs
- fetal: compensatory effort following acute hypoexmia, infection, activity or stimulation, chronic hypoxia, tachyarrythmia, cardiac abnormalities, anemia
treatment for fetal tachycardia
- treat underlying cause
- assess variability and consider position change or O2 to promote oxygenation
- assess maternal VS
- initiate interventions to decrease maternal temp (meds, ice packs)
- assess hydration and admin IVF or water
- reduce anxiety by explaining, reassuring, and encouraging
- decrease or discontinue o2
- notify HCP
fetal bradycardia
- baseline FHR <110bpm
- unresolved may result in fetal hypoxia and needs immediate intervention
- sudden profound bradycardia (>80bpm) obstetrical emergency
- with normal variability may be beginning
- with loss of variability or late decels is associated with current or impending fetal hypoxia
causes of fetal brady cardia
- maternal: supine position, dehdyration, hypotension, acute maternal cardiopulmonary compromise, uterine rupture, placental abruption, medications (anesthetics, adrenergic receptors)
- fetus: fetal response to hypoxia, umbilical cord compression, acute hypoxemia (late or profound), hypothermia, hypokalemia, chronic fetal head compression, fetal bradyarrythmias
treatment of fetal bradycardia
- medical: cause related, consider delivery
- confirm FHR vs MHR
- assess fetal movement
- assess fetal response to fetal scalp stimulation
- perform vaginal exam and assess for prolapsed cord
- assess maternal VS
- assess hydration and hydrate prn
depending of FHR variability and other characteristics…
- change maternal postion (left or right lateral) to promote fetal oxygenation
- discontinue oxytocin to reduce UC
- give oxygen 10L/min via nonrebreather face mask to promote fetal oxygenation
- modifying pushing to every other contraction or stop pushing until the FHR recovers to promote fetal oxygenation
- encourage open glottis pushing efforts
- discourage prolonged or sustained breath holding while pushing
- provide support
- notify HCP
assessing baseline variability
- most important characteristic of FHR presence implies that both branches of autonomic nervous system are functioning
- beat to beat changes/variations/fluctuations in FHR baseline
- described by undetectable, observed at fewer than 5bpm, 6-25bpm, 25bpm
absent variability
- 0-2bpm
- looks like flatline
- non-reassuring
minimal variability
3-5bpm
causes of absent or minimal variability
- fetal acidemia secondary to uteroplacental insufficiency
- cord compression
- preterm
- maternal hypotension
- uterine hyperstimulation
- abruptio placentae
- fetal dysrhythmia
interventions for absent or minimal variability
- lateral positioning of mother
- increase IVF rate
- administer oxygen at 8-10L/min via mask
- consider internal F montioring
- report to HCP and document
- prep for possible C-section in case no changes occur
moderate variability
- 6-25
- indicates autonomic and nervous system of fetus are well developed and well oxygenated
- considered a GOOD sign of fetal well0being and correlates with absence of significant metabolic acidosis
- this is NORMAL and fetus can utilize o2
marked variability
> 25bpm (excessive)
causes of marked variability
- cord prolapse or compression
- maternal hypotension
- uterine hyperstimulation
- abruptio placenta
interventions for marked variability
- determine cause
- lateral positioning
- increase IVF rate
- administer o2 at 8-10L/min by mask
- discontinue oxytocin
- observe for changes in tracing
- consider internal fetal monitoring
- notify HCP and prep for surgical birth if no change
determining if accel’s are present
- transitory abrupt increases in FHR above baseline that last <30 seconds from onset to peak
- determine if present or absent
- always reassuring, occurs with fetal movement or stimualtion
- if present and 15x15 (abrupt increase by at least 15 beats above baseline for at least 15 seconds) it is reactive
- this strip has a FHR baseline of 145 and is reactive because FHR baseline has increase to at least 160 for minimally 15 seconds
decelerations
- decrease in FHR caused by stimulation of the parasympathetic nervous system
- describe by their shape and association to uterine contractions
- determine if present or absent, if absent GREAT
- can be early, variable, late, prolonged
early decels
- occur early with onset of the contraction
- mirrors the shape and timing of contraction (therefore need a ontraction to determine the type of decel)
- appearance is shallow and cuplike
- reassuring: caused by vagal stimulation that occurs with pressure on fetus’ head
- NO intervention needed
variable decels
- can occur or be ID’d with or without contraction
- often ABRUPT, with a U, V, or W shape, return to baseline is also abrupt
- non-reassuring especially if deep or prolonged
- results from compression of umbilical cord!!!!!
interventions for variable decels
- change maternal position
- perform sterile vaginal exam to eval cord
- admin oxygen at 10L/min via nonrebreather
- prep for possible amnioinfusion
- decrease or discontinue oxytocin
- consider need for tocolytics to reduce UC
- consider internal fetal monitoring
- modify pushing
- provide support
- notify HCP
- plan for delivery and care of neonate
late decels
- occur late or after onset of contraction
- need contraction to determine kind of decels
- apperance is shallow and cuplike
- NON-reassuring especially if seen with absent or minimal variability
- results of uteroplacental insufficiency (fetus isn’t getting o2)
treatment for late decels
- change the maternal position
- discontinue oxy and consider terbutaline
- assess hydration and give IV bolus
- consider fetal scalp stimulation
- administer o2 at 10L/min via nonrebreather
- consider internal fetal monitoring
- provide support
- notify HCP
- plan for delivery and care of baby
prolonged decels
- a “long & late” 15bpm drop below baseline testing >2minutes but <10 minutes
- non-reassuring
- result of uteroplacental insufficiency with or without cord compression
- interventions same as the rest
VEAL CHOP
- Variable decels = Cord compression
- Early decels = Head compression
- Accels = Ok
- Late decels = Placental insufficiency
contractions
- frequency measured in minutes, beginning of one contraction to beginning of next
- duration measured in seconds beginning to end of each contraction
- intensity (toco-palpation, mild moderate, strong) (IUPC-subtracting resting tone from strongest (tallest UC) and weakest (shortest UC) for a range in mmHg
- resting tone, pressure of uterus at rest/between UC (external palpation soft or firm, internal in mmHg (do NOT want >35mmHg)
assessing intensity of contractions
- place fingertips on fundus of uterus to assess degree of tension as the contraction occurs
- intensity measured at peak of contraction and rated as mild, moderate, or storng
- resting tone is measured between contraction and listed as soft, firm, uterine tone
- subjective and can be biased by fat distribution of client’s abdomen
assessing intensity
- resting tone
- weakest contraction (highest point - resting tone = x)
- strongest UC (strongest UC - resting=x)
- UC intensity range from weakest and strongest with resting tone
dystocia
- abnormal progression of labor
- characterized by a slow and abnormal progression of labor
- fatiguining for both mother and fetus
- leading indicator for C-section
- because cannot be predicted for diagnosed w/ certainty, the term “failure to progress” is often used
- abnormalities involve the powers, passengers, and psyche
what problem is associated with powers
- hypertonic uterine dysfunction
- hypotonic uterine dysfunction
hypertonic uterine dysfunction
- uncoordinated uterine activity
- contractions frequent and painful but ineffective in promoting dilation and effacement
- risk for maternal exhaustion and fetal intolerance of labor and asphyxia due to decreased placental perfusion
assessment of hypertonic uterine dysfunction
- painful
- frequent contractions with inadequate relaxation inbetween
- little cervical changes
medical management of uterine dystocia / hypertonic uterine dysfunction
- evaluate progress
- determine cause
- hydrate
- provide pain management
nursing care for hypertonic uterine dysfunction/uterine dystocia
- promote rest
- admin pain meds as ordered
- promote relaxation
- hydrate with IV or PO fluids
- assess FHR and UC’s
- evaluate labor progress via sterile vaginal exam
- support and explain
- notify HCP
hypotonic uterine dysfunction
- occurs during active labor (dilation >5-6cm)
- contractions become poor in quality and lack sufficient intensity to dilate and efface the cervix
- MAJOR risk for postpartum hemorrhage as the uterus cannot contract effectively to compress blood vessels
clinical manifestations of hypotonic uterine dysfunction
- weak contractions that become milder
- uterine fundus that can be easily fingertip pressure at peak of each contraction and contractions that become more infrequent and brief
medical management of hypotonic uterine dysfunction
- evaluate labor progression
- determine cause
- consider interventions (starting oxy, performing amniotomy, c-section, etc)
nursing interventions for hypertonic uterine dysfunction
- assess uterine activity
- assess maternal and fetal status
- ambulate and change position
- hydrate w IVF or po fluids
- augment labor with oxy per protocol
- provide support and keep woman and family informed
- notify HCP of response and progression
precipitous labor
entire labor and birth within 3 hours
risks for precipitous labor
- maternal: cervical laceration, potential for uterine rupture
- fetal: head trauma (i.e., intracranial hemorrhage, nerve damage), hypoxia due to rapid progression of labor
nursing management for precipitious labor
- promote safety
- monitor VS and UCs q15 min
- provide support
- anticipate complications
- prep for delivery
problems with passenger
- should dystocia
- breech/positioning
- preterm labor
shoulder dystocia
- difficulty during delivery of shoulder after birth of head which often occurs when passage of anterior shoulder is obstructed by symphysis pubis
- first sign is retraction of fetal head against the maternal perineum after delivery of head, sometimes called turtle sign
- increased suspicion with prolonged second stage of labor
- risk factors not clearly ID’d but associated with birth weight >4000g (fetal macrosomia)
- EMERGENCY!!!
management of shoulder dystocia
qplace women’s legs upward and pressing down on abdomen
nursing management for shoulder dystocia
- call for help
- explain the situation to client and family
- urge NOT to push
- help client assume position
- assist HCP w/ manuevers and techniques during birth
- document maneuvers including amount of time required to resolve shoulder dystocia
- provide encouragement and support
- assess newborn for clavicle or humerus fracture, brachial plexus injury, and asphyxia
- assess mother for early hemorrhage and trauma to vagina, perineum, and rectum
positoning of fetus
- single footing breech (one foot out)
- frank breech (buttocks is presenting part)
preterm labor
- occurence of regular contractions accompanied by cervical effacement and dilation before end of 37 weeks gestation
- if not halted, results in preterm birth
signs of preterm labor
- uterine contraction q10 min or less w/ or w/o pain
- mild menstrual like cramps felt low in abdomen
- constant or intermittent feelings of pelvic pressure that may feel like the baby pressing down
- rupture of membranes
- low, dull, backache, constant or intermittent
- change in vaginal discharge
- urinary frequency, urgency, hesitancy, or hematuria
- abdominal cramping w/ or w/o diarrhea
primary interventions for preterm labor
- diagnosis and treatment of STIs, UTIs, and bacterial vaginosis
- admin hydroxyprogesterone 100mg 2x/daily vaginally
- cervical cerclage
secondary prevention of preterm labor
- administer antibiotics to treat infection if needed
- placement of emergency or rescue cerclage in early 2nd trimester
- tocolysis
- if woman is btwn 24-34wks and candidate for tocolysis, admin corticosteroids (betamethasone or dexamethasone) for benefit of fetal lung maturity
tocolytic medications
- terbutaline
- magnesium sulfate
- nifedipine (procardia)
terbutaline
- admin subq (0.25mg normally)
- use not exceeding 48-72hrs
- often used for breakthrough contractions in a patient not currently in active labor
- sometimes used in labor for tachysystole
magnesium sulfate
- tocolytic choice
- do not admin if on CCB
- loading dose 4-6g IV 100mL of IVF over 20 minutes (maintenance 2-4g/hr)
- maintain for 12-24 hrs at lowest rate
nifedipine (procardia)
- calcium channel blocker
- PO or IV
- acts by reducing flow of calcium ions into intracellular space of myometrial smooth muscle cells inhibiting contractile activity
- check BP before
health promotion ot prevent preterm labor
- teach to recognize s/s of preterm labor
- teach to evaluate contractions
- ensure pt knows when to report and notify HCP
hospital based nursing care for preterm labor
- promote rest
- monitor vitals and I&Os
- continuosuly monitor FHR and UCs
- admin tocolytics
- keep informed, provide explanations, allow expression of feelings and concerns
post-term pregnancy
- extends >294 days or 42 completed weeks past the first day of LMP
- associated with deterioration of placenta and related problems for baby (reduced blood supply, decreased fetal oxygenation, reduced nutritional supply
- 20% of postterm fetuses experience dysmaturity syndrome (associated with uteroplacental insufficiency resembling IUGR, meconium aspiration, and short term neonatal complications)
maternal risks after post-term pregnancy
- increased discomfort of pregnancy
- anxiety
- insomnia
- C-section
- operative vaginal birth (forceps, vaccum)
- perineal trauma or damage
- maternal hemorrhage
clinical interventions for post-term pregnancy
- HCP will begin specialized monitoring when completing 40th weeks (nonstress and biophysical profile)
- if problems occur, induction of labor recomended
nursing care for post-term pregnancy
- assess EDOB and criteria to establish date
- evaluate FHR during NST or during care of laboring patients
- be preped to intervene for non-reassuring FHR
- assess fluids for presence of meconium once membranes are ruptured
induction of labor
- deliberate stimulation of UCs before onset of spontaneous labor to facilitate a vaginal delivery
- induction of labor refers to techniques for stimulation UCs to accomplish delivery before osnet of spontaneous labor
- maternal indications: preeclampsia, eclampsia, fetal death, chorioamnionitis
- fetal indications: IUGR, isoimmunizations, premature rupture of membranes with established lung majority)
contraindications of labor induction
- complete placenta previa
- placental abruption
- transverse lie
- floating presenting part
- fetal distress
- previous uterine surgery that prohibits trial of labor
management for induction
- u/s to evaluate fetal size, position, and GA along with locating placenta
- engaged fetal part
- pelvimetry to rule out fetopelvic disproportion
- NST to evaluate fetal well being
- phosphatidyl glycerol levels to assess fetal lung maturity
- confirmation of category I FHR
- vaginal exam to eval cervix and inductability
- labs: CBC, UA
- methods to induce: mechanical, cervical, pharmacologic
bishop score 0
- closed
- effaced 0-30%
- -3 station
- firm cervix
- posterior cervical position
bishop score 1
- 1-2 cm dilated
- 40-50% effaced
- -2 station
- medium cervical consistency
- cervix in midposition
bishop score 2
- 3-4 cm dialted
- 60-70% effaced
- -1 fetal station
- soft cervix
- anterior positioning
bishop score of 3
- 5-6 cm dilated
- 80% effaced
- +1/+2 station
pharmalogical method for induction
misoprostol
action of misoprostol
ripens cervix making it softer and causing it to begin to dilate and efface, stimulating uterine contractions
indication for misoprostol (cytotec)
- used for preinduction cervical ripening (ripen cervix before oxytocin induction of labor when bishop score is 4 or less)
- used to induce labor or absortion
misoprostol dosage and admin
- 25mcg as initial dose
- insert intravaginally into posterior vaginal fornix using tips of index and middle fingers without use of lubricant
- redosing is permissible if cervix remains unfavorable
- FHR normal and have at least 3hrs since last dose
nursing management for misoprostol
- explain procedures to client and family
- assess VS, FHR, and pattern and perform bishop score
- have woman void before insertion of med
- admin as ordered
- monitoring for tachysystole, fever, chills, vomiting, diarrhea
- prep to admin terbutaline 0.25 mg SQ if adverse effects occurs
- document all findings and admin procedures
oxytocin indications
- used primarily for labor induction and augmentation
- can be used to control postpartum bleeding
- goal: use lowest dose possible to achieve adequate labor evidence by progressive cervical effacement and dilation (0.5-1cm/hr) after active labor has been acheived
dosage and admin of oxytocin
- admin IV through secondary line via infusion pump
- start at 1-2miliunits/min
- increase rate by 1-2milliunits/min no more frequently than 30-60 minutes based on response
adverse effects of oxytocin
- maternal: uterine tachysystole, placental abruption, uterine rupture
- fetal: fetal compromise, progressive decrease in fetal oxygen status, neonatal acidemia
nursing management for oxytocin
- HIGH alert
- education and support
- assess uterine activity and FHR continuously using EFM
- evaluate tracings q15min during first stage and during passive stage
- evaluation tracing q5min during active pushing
- contractions shouldn’t occur >q2min
- titrate to lowest dose that acheieves labor progres
- document time, each time increased, decreased, or discontinued, assessment and communication w/ HCP
prolpased umblical cord
- precedes fetal presenting part
- trapped between preenting part and pelvis
- pressing part not firmly against cervix
- potential obstruction of blood flow through cord
- variable or prolonged decels
nursing management of prolpased cord
- MEDICAL EMERGENCY
- if loop of cord palpated on vaginal exam, push presenting part up off cord and hold
- call for help
- notify HCP
- explain to client what is happening
- place client in knee chest position or trendelenburg
- admin O2 at 10L/min via mask
- admin IVF
- discontinue oxytocin
- prep for immediate delivery
forceps assisted birth
- used to apply traction to fetal head or provide method of rotating fetal head during birth
- are stainless steel instruments, similar to ongs, with rounded edges that fit around fetus’s head
- applied to side
- type determined by HCP
vaccum assisted birth
- cup shaped instrument attached to suction pump for extraction
- suction cup placed against occiput
- pump used ot create negative pressure
- HCP applies traciton until fetal head emerges
indicateds for forcep or vaccum
- prolonged 2nd stage
- distress FHR
- failure of presenting part to rotate and descend into pevlis
- limited senstation and inability to push effectively from anesthesia
- presumed fetal jeporady or distress
- maternal heart disease, pulmonary edema, intrapartum infeciton, maternal fatigue
- trend to use vaccum over forceps
nursing interventions for forceps
- assess woman’s anesthesia level and comfort level
- insert straight cath
- provide emotional support
- document type of forceps, # of applications, and time
- anticipate potential complications
nursing interventions for vaccum extraction
- assess woman’s anesthesia level and comfort
- educate and reassure
- anticipate potential complication
- pump vaccum to appropriate level
- pressure should be released during contractions
- document pump was used
- time how long cup is on fetal head
maternal complications of forceps or vaccum
- lacerations of cervix, vagina, or perineum
- hematoma
- extension of episiotomy incision into anus
- hemorrhage
- infection
fetal complications of forceps and vaccum assist
- ecchymoses
- facial and scalp lacerations
- facial nerve injury
- cephalohematoma
- caput succedaneum
cesarean birth
- surgical birth of fetus through incision in abdominal wall
- most commonly performed surgery in US
- indicated for abnormal presentation, previous uterine surgery, placenta previa, non-reassuring fetal status, active herpes infection, dystocia
complications of c-section
- infection
- hemorrhage
- aspiration
- PE
- urinary tract trauma
- thrombophlebitis
- paralytic ileus
- atelectasis
- fetal injury and transient tachypnea of newborn
spinal anesthesia (block)
- anesthetic solution containing local anesthetic alone or in combo w/ opiod
- injected into 3rd,4th, or 5th lumbar interspace into subarachnoid space
- mixes with CSF
- provides anesthesia from nipples to feet
- lasts 1-3hrs depending on type and amougn
advantages of spinal block
- immediate onset on anesthesia
- relative ease of admin
- smaller drug volume
- maternal compartmentalization of drug
disadvantages of spinal block
- primary intense blockage of synthetic fibers
- uterine tone is maintained
- short acting
complications of spinal block
- hyoptension
- high level complete spinal or total spinal block
- spinal headache
nursing care during spinal anesthesia
- assist with positioning
- provide support and encourage breathing and relaxation
- provide o2 via nasal cannula or face mask
- record baseline
- admin fluid bolus
- palpate uterus to detect contractions
- after procedure assist to supine with wedge
- keep client informed
- assess fr hypotension and difficulty breathing
lumbar epidural block
- provides adequate pain relief, does not pass placenta
- allows woman some sensation to feel pressure and push
- preferred method of pain relief
- most common technique used in labor is continuous infusion pump (PCEA)
- side effects: hypotension, pruritus, patchy blocks, shivering
advantages of lumbar epidural block
- produces good analgesia
- woman fully awake
- does not enter fetal bloodstream
- once pump stopped, wears off within 1-2hrs
- if fails to profress, epidural can be used for c-section
disadvantages of lumbar epidural block
- maternal hypotension secondary to peripheral vasodilation
- can be prevented by preloading with rapid infusion of IVF (500-1000cc) and then providing IVF continuously until birthq
maternal hypotension
- caused by spinal blockade which lowers peripheral resistance which decreases venous return to heart and lowers cardiac output causing decreased BP
- will lead to uteroplacental insufficiency in fetus presenting as late decels
- to minimize: preload with IVF and continue IVF
when complication occurs you want to
- flip: reposition on side
- flush: increase fluids
- O: administer 10L o2 via nonrebreather
nursing care for epidurals
- assess maternal VS and FHR
- ensure O2 and resuscitative equipment ready and function
- start IVF and admin
- encourage rest when tired
- assist with procedure
- help reposition and monitor BP and FHR
general anesthesia
- achieved throrugh combination of IV analgesics and inhaled agents
- IV anesthetics used: propofol, ketamine
- inhaled meds: nitrous oxide and halogenated agents
- major complications: fetal respiratory depression, uterine relaxation, vomiting, aspiration
nursing care for general anesthesia
- administer antacids prophylactically
- position with wedge under hip
- preoxygenate
- start IVF
- assist anesthesiologist and other surgical team members
- provide emotional support
- encourage breastfeeding when awake
preop teaching for C-section
- provide education, clarification and support (explain why and what for)
- prepare for postop period (breastfeeding, pain management, ambulation)
- emergency c-section (support partner)
postop care
- assess dressing, stitches, and staples
- perineal pad check q15min
- fundus palpated
- determine if remaining firm
- IV oxytocin
- assist with cough and deep breathing
- newborn safety
- promote bonding
propsoed causes of preeclampsia
- placental implantation with abnormal trophoblasts invasion in uterine wall
- immunological maladaptive tolerance between maternal, paternal (placental), and fetal tissues
- maternal maladaptation to cardiovascular changes or inflammatory changes of pregnancy
- genetic factors including inherited predisposing genes and epiegnic influences
preeclampsia signs/symptoms
- sevre headache
- swollen face
- visual disturbances
- epigastric/chest pain
- high BP
- swollen hands/fingers
- swollen legs/feet
- proteinuria
risks for woman w/ preeclampsia
- cerebral edema, hemorrhage, or stroke
- disseminated intravascular coagulation (DIC)
- pulmonary edema
- congestive HF
- maternal sequelae resulting from organ damage including RF, HELLP sundrome, thrombocytopenia, disseminated intravascular coagulation, pulmonary edema, eclampsia, (seizures), and hepatic failure
- placenta abruptio
- 1.5-2x more likely to develop heart disease
risk for fetus and newborn with preeclampsia
- uteroplacental ischemia including fetal growth restriction, oligohydraminos, placental abruption, and nonreassuring fetal status
- fetal intolerance to labor due to decreased placental perfusion
- still birth
medical managemet for preeclampsia
- control of BP and prevention of seizure activity and cerebral hemorrhage
- induced brith is indicated for women at less than 34weeks gestation with severe features of preeclampsia or unstable maternal or fetal status at any gestation
nursing management of preeclampsia
- accurate assessment and monitoring for labs
- admin antihypertensives
- admin mag sulfate
- assess for CNS changes (headache, visual changes, DTRs, clonus)
- assess for epigastric pain or RUQ pain showing liver involvement
- maintain accurate I&Os to eval kidney fxn
- perform atenatal fetal testing for FHR monitoring
- provide adequate environment to decrease CNS stimulation
- maintain bedrest in lateral recumbent position
- provide information to woman and her family
- report decline in maternal or fetal status to HCP
magnesium sulfate dosage and admin
IV access: load 4-6g 10% mag sulfate in 100mL solution over 20 minutes, maintenance dose 1-2g/hr
no IV access: 10grams of 50% solution IM (5g in each buttock)
antihypertensive meds dosage and admin
- for SBP >160 or DBP >110
- labetalol: 10-20mg for more than 2min, 40mg, 80 IV over 2minutes
- hydralazine (5-10mg IV over 2 min, repeat q20min until BP is reached
- nifedipine: 10-20mg capsules prn may repeat in 20 minutes
anticonvulsants admin and dosage
- for recurrent seiures
- lorazepam (ativan): 2-4mg IV, may repeat 10-15min
- diazepam (valium): 5-10mg IV q5-10min
contraindications for mag sulfate
- pulmonary edema
- renal failure
- myasthenia gravis
labetalol contraindications
- avoid in asthma or HF
- can cause neonatal bradycardia
hydralazine contraindications
- mitral valve disease
DTR scale
0 = no response
+1 = sluggish or diminished
+2 = active or expect
+3 = more brisk than expect, slightly hyperactive
4+ = brisk, hyperactive, with intermittent or transient clonus (spasms)
eclampsia
- may be triggered by cerebral vasospasm, cerebral hemorrhage, cerebral ischemia, or cerebral edema
- often preceded by premonitory signs of cerebral irritation like severe headaches, blurred vision, photophobia, and altered LOC
- during eclamptic seizures, prolonged FHR decels, even fetal bradycardia, and increase in uterine contractility may occur
- after a seizure due to maternal hypoxia and hypercarbia, FHR tracing may show recurrent decels, tachycardia, and reduced variability
care during seizures
- remaining with pt
- call for help
- providing pt safety and assessing airway and breathing
- prevent maternal injury
- record time, lengthm and type of seizure activity
- notify HCP
after seizure care
- rapidly assess maternal and fetal status
- assess airway, suction if needed
- admin O2 (10L via mask)
- ensure IV access
- admin mag sulfate
- provide quiet environment