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General aspects
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Pathophysiology - interference with normal processes and patterns of labor/birth result in maternal or fetal jeopardy (e.g., preterm labor, dysfunctional labor patterns; prolonged [over 24] labor; hemorrhage: uterine rupture/inversion, amniotic-fluid embolus).
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Etiology:
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Preterm labor - unknown.
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Dysfunctional labor:
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Physiological response to anxiety/fear/ pain - results in release of catecholamines, increasing physical/psychological stress - myometrial dysfunction; painful and ineffectual labor.
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Iatrogenic factors: premature or excessive analgesia, particularly during latent phase.
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Maternal factors:
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Pelvic contractures.
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Uterine tumors (e.g., myomas, carcinoma).
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Congenital uterine anomalies (e.g., bicornate uterus).
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Pathological contraction ring
(Bandl's
ring).
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Rigid cervix, cervical stenosis/stricture.
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Hypertonic/hypotonic contractions.
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Prolonged rupture of membranes.
Note:
Intrauterine infection may have caused rupture of membranes or may follow rupture.
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Prolonged first or second stage.
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Medical conditions: diabetes, hypertension.
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Fetal factors:
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Macrosomia (LGA).
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Malposition/malpresentation.
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Congenital anomaly (e.g., hydrocephalus, anencephaly).
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Multifetal gestation (e.g., interlocking twins).
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Prolapsed cord.
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Postterm.
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Placental factors:
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Placenta previa.
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Inadequate placental function with contractions.
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Abruptio placentae.
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Placenta accreta.
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Physical restrictions: when confined to
bed, flat position,
etc.
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Assessment:
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Antepartal history.
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Emotional status.
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Vital signs, FHR.
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Contraction pattern (frequency, duration, intensity).
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Vaginal discharge.
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Analysis/nursing diagnosis:
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Anxiety/fear
for self and infant related to implications of prolonged or complicated labor/birth.
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Pain
related to hypertonic contractions/ dysfunctional labor.
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Ineffective individual coping
related to physical/psychological stress of complicated labor/ birth, lowered pain threshold secondary to fatigue.
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High risk for injury
related to prolonged rupture of membranes, infection.
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Fluid volume deficit
related to excessive blood loss secondary to placenta previa, abruptio placentae, Couvelaire uterus, Disseminated Intravascular Coagulation.
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Nursing care plan/implementation:
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Goal:
minimize physical/psychological stress during labor/birth.
Assist woman in coping effectively:
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Reinforce relaxation techniques.
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Support couple’s effective coping techniques/mechanisms.
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Goal:
emotional support.
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Encourage verbalization of anxiety/fear/ concerns.
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Explain all procedures - to minimize anxiety/fear, encourage cooperation/participation in care.
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Provide quiet environment conducive to rest.
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Goal:
continuous monitoring of maternal/fetal status and progress through labor
- to identify early signs of dysfunctional labor, fetal distress; facilitate prompt, effective treatment of emerging complications.
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Goal:
minimize effects of complicated labor on mother, fetus.
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Position
change: lateral Sims’ - to reduce compression of inferior vena cava.
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Oxygen per mask, as indicated.
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Institute interventions appropriate to emerging problems (see specific disorder).
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Evaluation/outcome criteria:
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Woman has successful birth of viable infant.
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Maternal/infant status stable, satisfactory.
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Disorders affecting protective functions. Preterm labor -
occurs after 20 weeks of gestation and before beginning of week 38.
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Pathophysiology -
physiological events of labor (i.e., contractions, spontaneous rupture of membranes, cervical effacement/dilation) occur before completion of normal, term gestation.
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Etiology -
causes may be from maternal, fetal, or placental factors.
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Coexisting disorders:
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Infections that may cause PROM.
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PROM of unknown etiology.
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PIH (preeclampsia/eclampsia).
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Uterine overdistention.
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Polyhydramnios.
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Multifetal gestation.
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Maternal diabetes, renal or cardiovascular disorder, UTI.
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Severe maternal illness (e.g., pneumonia, acute pyelonephritis).
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Abnormal placentation.
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Placenta previa.
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Abruptio placentae.
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Iatrogenic: miscalculated EDB for repeat cesarean birth (rare).
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Fetal death.
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Incompetent cervical os (small percentage).
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Uterine anomalies (rare).
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Intrauterine septum.
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Bicornate uterus.
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Uterine fibroids.
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Positive fetal fibronectin assay (protein found in fetal tissue, membranes, amniotic fluid, and the decidua) found in cervical/vaginal fluid first half of pregnancy and normally absent through mid to late pregnancy (Î risk of PTL by 20%).
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Prevention:
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Primary
- close obstetric supervision; education in signs/symptoms of labor.
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Secondary
- prompt, effective treatment of associated disorders .
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Tertiary
- suppression of preterm labor.
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Bedrest.
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Position:
side-lying - to promote placental perfusion.
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Hydration.
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Pharmacological (may require “informed consent”; follow hospital protocol). Betaadrenergic agents, MgSO 4 (take ECG first) to reduce sensitivity of uterine myometrium to oxytocic and prostaglandin stimulation; increase blood flow to uterus.
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May be maintained at home with adequate follow-up and health teaching.
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Contraindications for suppression:
Labor is not suppressed in presence of:
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Placenta previa or abruptio placentae with hemorrhage.
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Chorioamnionitis.
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Erythroblastosis fetalis.
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Severe preeclampsia.
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Severe diabetes (e.g., “brittle”).
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Increasing placental insufficiency.
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Progressive cervical dilatation of 4 cm or more.
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Ruptured membranes (with maternal fever).
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Assessment:
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Maternal vital signs. Response to medication:
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Hypotension.
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Tachycardia, arrhythmia.
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Dyspnea, chest pain.
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Nausea and vomiting.
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Signs of infection:
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Increased temperature.
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Tachycardia.
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Diaphoresis.
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Malaise.
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Increased baseline fetal heart rate; variability
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Contractions: frequency, duration, strength.
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Emotional status - signs of denial, guilt, anxiety, exhaustion.
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Signs of continuing and progressing labor.
Note:
Vaginal examination
only
if indicated by other signs of continuing labor progress.
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Effacement.
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Dilation.
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Station.
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Status of membranes.
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Fetal heart rate, activity (continuous monitoring).
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Analysis/nursing diagnosis:
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Anxiety/fear
related to possible outcome.
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Self-esteem disturbance
related to feelings of guilt, failure.
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Impaired physical mobility
related to imposed bed rest.
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Knowledge deficit
related to medication side effects.
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Ineffective individual coping
related to possible outcome.
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Impaired gas exchange
related to side effects of medication (circulatory overload; pulmonary edema).
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Diversional activity deficit
related to imposed bed rest, decreased environmental stimuli.
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Altered urinary elimination
related to bed rest.
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Constipation
related to bed rest.
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Nursing care plan/implementation:
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Goal:
inhibit uterine activity.
Administer medications as ordered - terbutaline, magnesium sulfate, Procardia, Indocin.
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Goal:
safeguard status.
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Continuous maternal/fetal monitoring.
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I&O - to identify early signs of possible circulatory overload.
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Position:
side-lying - to increase placental perfusion, prevent supine hypotension.
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Report promptly to physician:
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Maternal pulse of 110 or more.
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Diastolic pressure of 60 mm Hg or less.
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Respirations of 24 or more; crackles (rales).
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Complaint of dyspnea.
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Contractions: increasing frequency, strength, duration, or cessation of contractions.
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Intermittent back and thigh pain.
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Rupture of membranes.
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Vaginal bleeding.
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Fetal distress.
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Goal:
comfort measures.
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Basic hygienic care - bath, mouth care, cold washcloth to face, perineal care.
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Back rub, linen change - to promote relaxation.
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Goal:
emotional support.
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Encourage verbalization of guilt feelings, anxiety, fear, concerns; provide factual information.
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Support positive self-concept.
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Keep informed of progress.
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Goal:
provide quiet diversion.
Television, reading materials, handcrafts.
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Goal:
health teaching
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Explain, discuss proposed management to suppress preterm labor.
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Describe, discuss side effects of medication.
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Explain rationale for bed rest, position.
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If labor continues to progress:
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Goal:
facilitate infant survival.
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Administer betamethasone, as ordered, 24 - 48 hours before birth—to increase/stimulate production of pulmonary surfactant.
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Give antibiotic to mother to lower down chance of neonatal sepsis.
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Notify neonatal ICU (NICU) - to increase chances for fetal survival, ensure prompt, expert management of neonate, and provide information and support to parents.
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Monitor progress of labor to identify signs of impending birth.
Note:
May give birth before complete (10 cm) dilation.
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Consider transfer to high-risk facility.
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Prepare for birth, or cesarean birth if infant less than 34-36 weeks of gestation.
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Goal:
emotional support.
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Do
not
leave woman (or couple) alone.
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Encourage verbalization of anxiety, fear, concern.
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Explain all procedures.
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Goal:
comfort measures. Note:
Analgesics used conservatively - to prevent depression of fetus/neonate.
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Goal:
support effective coping techniques.
Encourage support Lamaze (or other) techniques - coach, as necessary; discourage hyperventilation.
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Goal:
health teaching
- for severe preterm birth.
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Discuss need for episiotomy, possibility of outlet forceps-assisted birth - to reduce stress on fetal head, or
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Prepare for cesarean birth - to reduce possibility of fetal intraventricular hemorrhage.
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Rationale for avoiding use of medications to reduce contraction pain.
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Immediate care of neonate
:
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Goal:
safeguard status.
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Stabilize environmental temperature - to prevent chilling (isolette or other controlled-temperature bed).
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Suction, oxygen, as needed; may need intubation.
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Parenteral fluids, as ordered - to support normal acid-base balance, pH; administer antibiotics, as necessary.
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Arrange transport to high-risk facility, as necessary.
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Goal:
continuous monitoring of status.
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Electronic monitors - to observe respiratory and cardiac functions.
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Blood samples- to monitor blood gases, pH, hypoglycemia.
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Postpartum care: Goal:
emotional support.
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Facilitate attachment - photos if baby transferred or mother unable to visit.
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If couple, foster sense of mutual experience and closeness.
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Help her/them maintain a positive self-image.
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Encourage touching of infant before transport to nursery or high-risk facility; father/ partner may accompany infant and report back to mother.
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Encourage early contact- to facilitate mother’s need to ventilate her feelings.
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Assist parent(s) with grieving process, if necessary.
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Refer to support group if necessary.
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Other
- as for any postpartum woman.
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Evaluation/outcome criteria:
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Woman verbalizes understanding of medical/ nursing recommendations and treatments.
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Woman complies with medical/nursing regimen.
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Woman experiences no discomfort from side effects of therapy.
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Woman experiences successful outcome - labor inhibited.
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Woman carries pregnancy to successful termination.
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If preterm birth occurs, woman copes effectively with outcome (physiologically compromised neonate, neonatal death).