Labor and Birth Process and Nursing Management Chapter 13 & 14 Mary L. Dunlap MSN Fall 2015.
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Transcript of Labor and Birth Process and Nursing Management Chapter 13 & 14 Mary L. Dunlap MSN Fall 2015.
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Labor and Birth Processand
Nursing Management Chapter 13 & 14
Mary L. Dunlap MSN
Fall 2015
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Labor Definition
• Coordinated sequence of involuntary uterine contractions
• Contractions 3 minutes apart or less lasting 60 seconds or longer
• Resulting in effacement and dilatation of the cervix and delivery of the fetus and placenta.
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Possible Causes of Labor Maternal
• Uterine muscle stretching
• Pressure on the cervix
• Oxytocin
• Placental aging
• Estrogen/Progesterone ratio change
• Fetal cortisol concentration
• Prostaglandins
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Possible Causes of Labor Fetal
• Placental aging
• Fetal Cortisol concentration
• Prostaglandin
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Signs Preceding Labor
• Lightening
• Increase vaginal discharge
• Cervix softening
• Rupture of membranes
• Energy burst
• Braxton-Hicks contractions
• Weight loss
• Bloody show
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False Labor
• Irregular contractions
• No regular pattern
• Discomfort in lower abdomen and groin
• Show is not present
• Does not cause cervical change
• Activity does not increase contractions
• Sedation will stop or decrease contractions
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True Labor
• Regular contractions
• Contractions Progresses to a pattern
• Discomfort begins in back and radiates to the abdomen
• Activity increases contraction frequency
• Sedation does not diminish contraction pattern
• Causes cervical changes
• Show usually present
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Factors That Affect Labor
The Five P’s:
• Passageway (birth canal)
• Passenger (fetus and placenta)
• Powers (contractions)
• Position of the mother
• Psychologic response
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Passageway
• Pelvic structure and shape• Soft tissues cervix Pelvic floor Vagina
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Passenger• Size of the fetal head• Presenting part • Fetal lie• Fetal attitude• Fetal position
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Passenger: Fetal Skull
• Largest and least compressible structure
• Sutures: allow for overlapping and changes in shape (molding); help identify position of fetal head
• Fontanels: intersections of sutures; help in identifying position of fetal head and in molding
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Fetal Skull
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Passenger: Presenting Part
• Cephalic • Breech
FrankFull or completeFootling or incomplete
• Shoulder
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Breech Presentations
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Fetal Lie
• Fetal lie is the relationship of the spine of the fetus to the spine of the mother
• Longitudinal
• Transverse
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Fetal Attitude
• Fetal attitude is flexion or extension of the joints and the relationship of fetal parts to one another
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Passenger: Fetal Position
• Fetal position- relationship of the presenting part of the fetus to a designated point of the maternal pelvic structure
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Powers
Contractions primary force
• Frequency
• Duration
• Intensity
Pushing secondary force
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Maternal Position
• Affects woman’s anatomic and physiologic adaptations to labor
• Frequent changes in positionRelieve fatigueIncrease comfortImprove circulationFacilitates decent and rotation
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Psychological ResponseFactors Influencing a Positive Birth Experience
•Clear information on procedures
•Support, not being alone
•Sense of mastery, self-confidence
•Trust in staff caring for her
•Positive reaction to the pregnancy
•Personal control over breathing
•Preparation for the childbirth experience
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Factors That Affect Labor
5 Additional P’s
•Philosophy
•Partner
•Patience
•Pain management
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Cardinal movements of Labor
• Engagement• Descent• Flexion• Internal rotation • Extension• External rotation (restitution)• Expulsion (birth)
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Four Stages of Labor
First Stage starts with Onset of labor to complete dilation
• Latent phase Dilatation 0 to 3 cm
Effacement 0 to 40%• Active phase Dilatation 4 to 7 cm
Effacement 40 to 80%• Transition Dilatation 8–10 cm
Effacement 100%
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Stages of Labor
• Second stage–complete dilation to birth
• Third stage–birth to placental separation and expulsion
• Fourth stage–four hours following delivery of the placenta
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Initial Maternal Assessment
• Presenting complaint• EDC• Gravida/Para• Contraction Pattern• Membrane status• Presence of fetal movement• Complications
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Fetal Assessment
• FHR provides information about the fetal oxygen status.
• Locations for auscultating• Doppler Nursing Procedure 12.1 pg. 355
• Continuous FHR via ultrasound transducer
• Fetal movement
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Doppler
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Doppler
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Continuous Fetal Monitoring
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Contraction Assessment
• Frequency
• Duration
• Strength/Intensity
• Resting tone
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Contraction Phases
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Pelvic Exam
• Effacement
• Dilation
• Presenting part
• Station
• Status of membranes
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General Systems Assessment
• Vital signs
• General physical assessment
• Leopold’s maneuvers Procedure 14.1 pg. 424
• DTR and clonus
• Review prenatal record for lab results and history
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Physiologic Adaptation to Labor
Maternal Adaptation• Cardiovascular changes• Respiratory changes• Musculoskeletal changes• Gastrointestinal changes
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Physiologic Adaptation to Labor
Fetal adaptation to labor
• Fetal heart rate changes due to contractions
• Fetal circulation & respiratory changes preparing for birth
• Fetal heart rate baseline and variability
• Fetal heart rate response to contractions
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Nurses Role
• During labor and delivery fetal assessment includes determining fetal well-being and interpreting signs and symptoms of possible compromise
• Nurse needs to be knowledgeable of the different FHR categories and the appropriate interventions that may be required
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Monitoring Techniques
Electronic fetal monitoring• External monitoring
FHR—ultrasound transducerUCs—Toco transducer
• Internal monitoring (invasive)Spiral electrode (FSE)Intrauterine pressure catheter (IUPC)
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Amnio Hook
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Fetal Scalp Electrode
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Placement of FSE
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IUPC
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Internal Fetal Monitoring
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FHR Categories
• Category I normal
• Category II indeterminate
• Category III Predictive of abnormal fetus
acid base status
Tab. 14.1 pg.429
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Determining FHR Patterns
Fetal assessment
• Baseline FHR
• Variability
• Accelerations
• Periodic changes (decelerations)
Early (head compression)
Late (placental insufficiency)
Variable (cord compression)
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Baseline Fetal Heart Rate
• Baseline Rate is the average FHR that occurs during a 10-minute segment excluding periodic or episodic rate changes
• Normal 110-160
• Bradycardia <110
• Tachycardia >160
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Fetal Heart Rate Variability
• Irregular Fluctuations in FHR baseline measured as amplitude of the peak to trough in bpm
• Absent fluctuation undetectable
• Minimal <5 bpm
• Moderate (normal) 6-25 bpm
• Marked >25bpm
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Fetal Heart Rate Patterns
Changes in fetal heart rate• Periodic occur with Contractions• Episodic (non-periodic) not associated
with contractions• Accelerations• Decelerations
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Accelerations
• Positive sign of fetal wellbeing
• Abrupt increase in FHR above the base line lasting <30 sec from onset to peak
• Term 15 bpm above baseline & duration >15 sec. but <2min
• Prior to 32 weeks 10 by 10
• Prolonged 2 min. to <10min
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Decelerations
• Early decelerations
• Late decelerations
• Variable decelerations
• Prolonged decelerations
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Early Decelerations
• Gradual decrease in FHR, nadir coincides with the peak of the contraction
• Mirror image of the contraction
• Head compression/vagal response
• No treatment required/benign pattern
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Late Decelerations
• Gradual decrease in FHR with the nadir of the deceleration occurring after the peak of the contraction. The FHR does not return to baseline until the contraction has ended
• Caused by uteroplacental insufficiency
• Fetus is in distress
• Interventions Box 14.1 pg.432
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Variable Decelerations
• Abrupt decrease in FHR below the baseline. The decrease is at least 15 bpm, lasting between 15 sec and under 2 minutes. They can vary with contractions.
• Shaped like a “V” or a “W”
• Associated with cord compression
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Prolonged Deceleration
• Abrupt decrease in FHR of at least 15 bpm lasting longer than 2 minutes, but less than 10 minutes.
• FHR usually drops to less than 90 bpm
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Decelerations
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Fetal Heart Rate
• V Variable
• E Early
• A Acceleration
• L Late
• C Cord
• H Head Compression
• O Oxygenated fetus
• P Placental problems
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Fetal Assessment Methods
• Umbilical Cord Blood Analysis
• Fetal Scalp Stimulation
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Pain Management
• Nonpharmacologic
• Pharmacologic
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Nonpharmacologic Management
• Simple, safe, and inexpensive
• Provide sense of control over childbirth
• Natural child birth requires practice for best results
• Try variety of methods and seek alternatives, including pharmacologic methods if needed
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Nonpharmacologic Management
• Imagery and visualization• Position Changes Table 14.2 pg.437
• Music
• Touch and massage
• Breathing techniques
• Effleurage and counter pressure
• Water therapy (hydrotherapy)
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Pharmacologic Management
• Systemic Analgesia
• Regional Analgesia/Anesthesia
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Systemic Analgesia• Use of one or more drugs administered
orally, IM, or IV. These meds are distributed via the circulatory system.
• Pain relief can occur within a few min. and last up to several hrs.
• Side effect can be respiratory depression in the mother as well as the newborn after birth
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Systemic Analgesia• Opioids
• Ataractics/Antiemetics
• Benzodiazepines
• Drug Guide 14.1 pg. 441
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Regional Analgesia/Anesthesia
• Pudendal never block
• Epidural (Vaginal Del or C/S)
• Spinal (C/S)
• General (C/S)
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Epidural Analgesia
•Combination of local anesthetic (lidocaine) & an opioid (morphine or fentanyl)
•Injected into the epidural space•Medication can be balanced to provide pain relive and the ability to ambulate
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Epidural Analgesia
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General Anesthesia
• Reserved for emergency cesarean births when there is not enough time to do a spinal or epidural for anesthesia
• Combination of IV injection and inhalation agents
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Epidurals/Spinals/General Anesthesia
• Anesthesia interview
• Consent form
• Labs (platelets less than 100,000 can place an epidural/spinal)
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Nursing Responsibilities During 1st Stage of Labor
• Vital signs
• Hydration and nutrition
• Elimination
• Assessment of contractions and FHR
• Labor Support
• Comfort measures/Pain management
• Education
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Second Stage of Labor
• Assessment of contractions and FHR
• Fetal descent
• Psychological considerations
• Maternal positioning
• Coaching maternal breathing and pushing efforts
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Preparation for Delivery
• Prepare instrument table
• Adequate lighting
• Oxygen and suction equipment
• Radiant warmer, blankets,
• identification for newborn
• Pitocin
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Delivery Table
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Preparation for Delivery
• Positioning of mother for birth
• Gown, gloves, and protective equipment for personnel
• Cleansing of the perineum
• Deliver the newborn
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Second Stage of Labor
• Perineal Lacerations (Depth) * 1st degree * 2nd degree * 3rd degree * 4th degree• Episiotomy * midline * mediolateral
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Third Stage of Labor
Delivery of the placenta• Assess for perineal trauma• Repair of episiotomy/Perineal
lacerations• Newborn care• Emotional support /Foster bonding
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Episiotomy
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Episiotomy Repair
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Third Stage of Labor
Placental separation and expulsion
• Firmly contracting fundus
• Change in uterus
• Sudden gush of dark blood from introitus
• Apparent lengthening of umbilical cord
• Vaginal fullness
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Fetal Side
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Maternal Side
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Third Stage of Labor
Newborn care• Time of birth noted• Drying, stimulation, suctioning of the
newborn• Respiratory effort, heart rate, color, tone
noted• One- and five-minute Apgar scores• Cord blood obtained• Identification
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Apgar ScoreAssessment 0 Point 1 Point 2 Point
Heart Rate Absent < 100 bpm > 100 bpm
Respiratory effort Apneic Slow, irregular, shallow
Regular 30-60 breaths/min
Strong, good cry
Muscle Tone Limp, Flaccid Some flexion, limited resistance
to extension
Tight flexion, good resistance to extension with quick response to
flexed position
Reflex irritability No Response Grimace or frown when irritated
Sneeze, cough, or vigorous cry
Skin color Cyanotic or Pale Appropriate body color; blue extremities
Completely pink
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Apgar Score
• http://www.youtube.com/watch?v=hdNVhDuD4wU
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Fourth Stage of Labor
Maternal Assessment• Uterus• Lochia• Perineum• Bladder• Vital signs• Pain• Newborn-family attachment• Breastfeeding initiated
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