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57 Cards in this Set

  • Front
  • Back

Preferred anesthesia for laboring patient

Epidural > General

Disadvantages/risks of general anesthesia

concern re: effects on fetus


Incr risk of aspiration (pregnancy relaxes gastroesophageal sphincter)

Disadvantages/risks of epidural anesthesia

Can interfere with Mom's ability to push


Increased risk of hypotension

If mom gets anesthesia she will need to have

tocometer and pushing coach

Preferred anesthesia for c-section

Epidural

Indicates uteroplacental insufficiency

Late decelerations

Uteroplacental insufficiency

Baby not getting enough O2, risk of metabolic acidosis

Indicates head compression

Early decelerations

Indicates cord compression

Variable decelerations

Deceleration considered normal/benign

Early

Deceleration considered worrisome only if severe

Variable

Deceleration considered worrisome if repetitive

Late

Tx for variable compression

Correct mom's position (Lateral decubitus), give O2 and stop oxytocin if administered


If d/t oligohydramnios give amnio infusion

How to determine severity of variable compression

Graded by their duration

Correction for fetal bradycardia

Determine cause & correct OR start general measures to improve fetal O2


Determine if c-section or intervention req'd

Length of Normal Labor

UP TO - Prima: 20 hours, Gravida: 14 hours


P 6.5-20, G 4-11

Latent phase of labor

Start of contractions until 4cm dilation

Active phase of labor

Up to maximal cervical dilation (10cm)

Stage I of Labor

Latent and Active phases

Stage II of Labor

Max dilation up to delivery of baby

Stage III of Labor

From birth to delivery of placenta

What is a protracted active phase

EITHER active phase longer than 12 hours


OR cervical dilation slower than expected

Expected cervical dilation speed

Prima: 1.2cm/hr (5 hours)


Gravida: 1.5cm/hr (4 hours)

Risks of protracted active phase

Intrauterine infxn, need for c-section

Iatrogenic cause of prolonged latent phase

Analgesics given to mom

What is a prolonged latent phase

>20 hour PRIMA, >14 hours MULTI

Risks of prolonged latent phase

None, although overall no stage of labor should continue indefinitely

Causes of prolonged or arrested Stage I Labor?

Iatrogenic or 3 Ps

3 Ps of Labor

Power


Passenger


Pelvis

Which of the 3Ps can we modify? What is done?

Power - Give pitocin (oxytocin)

Tx for arrested active phase

C-section

Tx for prolonged active phase

Try pitocin


If not resolved, consider c-section

Tx for prolonged latent phase

Iatrogenic - rest and wait


Dilation - Balloon dilation of cervix


Contractions - pitocin

Tx if pelvis is too small or passenger is too big

C section

Causes of arrested Stage II Labor?

Pelvis or passenger

Tx of Arrested Stage II Labor?

Give pitocin, unlikely to resolve


Intervention to remove baby

Intervention if baby is at Stage 0 or less?

C-section

Intervention if baby is at Stage +1 or +2?

Vaccuum or forceps

Causes of arrested Stage III Labor?

Power/tired uterus

Risks of arrested Stage III Labor?

High risk of converting to post-partum hemorrhage

Tx for arrested Stage III Labor?

External/internal uterine massage


Pitocin (to allow uterus to keep working)


Manual manipulation

Causes of protracted active phase

Excess anesthesia, low power/ineffective contractions, fetopelvic disproportion, fetal malposition, ROM before onset of labor

Causes of prolonged latent phase

Low power/ineffective contractions, fetopelvic disproportion, Excess anesthesia

Cardinal movements of delivering fetus

Engagement, descent, flexion, internal rotation, extension, external rotation and expulsion

Engagement

Baby's head contacts the cervix, stimulating dilation

Flexion & Internal rotation

Baby enters vaginal canal, worming through

Extension and external rotation

Prior to exit of baby

Expulsion

Birth complete

What's a Bishop score

How ready is mom for delivery, and how soon will it occur (also if its time to prepare an emergent c-section in abnormal L&D)

Steps to correct fetal bradycardia in utero during labor?

Primarily expectant, tx with pacemaker after birth

Labor

progressive effacement and dilation of uterine cervix resulting from contractions of uterus

Dystocia

Difficult labor, d/t Shoulder stuck, consider the 3 Ps

Friedman's curve

The stages and phases of labor

Indications for operative OB: vacuum/forceps

Fetus descended far enough (+1/+2) but labor stalled

Indications for operative OB: c-section

Fetus no further than 0, labor stalled

Preterm labor is?

Baby is NOT ready, but mom is having cervical changes +/- contractions

True contractions

=< 10 m intervals


=> 30 sec duration


@20-36 weeks gestation



with cervical effacement, dialtion +/- descent of baby into pelvis