L &D Flashcards
__________ STIMULATION -RELEASED BY PITUITARY AT TERM
OXYTOCIN STIMULATION -RELEASED BY PITUITARY AT TERM
__________ DECREASED and _____________ INCREASE- INCREASES
ABILITY OF UTERUS TO CONTRACT (______________ MAINTAINS
PREGNANCY, SO LOWER LEVELS STIMULATE LABOR.)
PROGESTERONE and ESTROGEN
ROGESTERONE
PROSTAGLANDIN RELEASE - PRODUCED BY ____________, ____________
, AND __________STIMULATES LABOR
PROSTAGLANDIN RELEASE - PRODUCED BY DECIDUAS, UMBILICAL
CORD, AND AMNION STIMULATES LABOR
- AGING PLACENTA-LIMITS ITSELF -MADE TO FUNCTION OPTIMALLY
FOR _______
- AGING PLACENTA-LIMITS ITSELF -MADE TO FUNCTION OPTIMALLY
FOR 41 WEEKS
MATERNAL FACTORS for triggering labor
- UTERINE MUSCLES STRETCHED TO
THRESHOLD POINT =>RELEASE OF
PROSTAGLANDINS AND OXYTOCIN THAT
STIMULATE CONTRACTIONS - INCREASED PRESSURE ON THE CERVIX
STIMULATES NERVE PLEXUS => RELEASE OF
OXYTOCIN BY THE MATERNAL PITUITARY
GLAND - INCREASE IN ESTROGEN WHICH ENHANCES
MYOMETRIUM TO PRODUCE CONTRACTIONS - PROGESTERONE (“PRO-PREGNANCY
HORMONE”) IS FUNCTIONALLY WITHDRAWN
ALLOWS ESTROGEN TO CONTRACT THE
UTERUS - OXYTOCIN & PROSTAGLANDINS SOFTEN
CERVIX AND STIMULATE MYOMETRIAL
CONTRACTIONS
FETAL FACTORS triggering labor
- PROSTAGLANDIN SYNTHESIS BY THE
FETAL MEMBRANES AND THE
DECIDUA STIMULATE
CONTRACTIONS - FETAL CORTISOL INCREASES- ACTS
ON PLACENTA, INCREASE
PROSTAGLANDINS, REDUCES
PROGESTERONE ALL STIMULATE
UTERUS TO CONTACT.
COMPONENTS OF LABOR
5 “P”S
- PASSENGER- FETUS
- PASSAGEWAY MOTHER’S PHYSICAL CAPACITY TO DELIVER
INFANT - POWERS-2 TYPES INVOLUNTARY AND VOLUNTARY
- POSITION OF MOTHER-MAKES A DIFFERENCE PHYSIOLOGICALLY
IN THE FETUS’S ABILITY TO DESCEND IN THE PELVIS - PSYCHOLOGICAL- A WOMAN’S PSYCHE CAN INFLUENCE THE
PROGRESS OF LABOR
POWERS OF LABOR-
voluntary = secondary powers “ bearing down” “ ferguson reflex”
and involuntary = dilation and effacement
_________OF UTERUS RESPONSIBLE FOR DILATION
(OPENING) AND EFFACEMENT (THINNING) OF THE CERVIX
Lower 3rd
INTENSITy ( description)
- MILD –
- MODERATE –
- STRONG
Mild: UTERINE WALL IS EASILY INDENTED DURING CONTRACTION (NOSE)
- MODERATE – RESISTANCE TO INDENTATION DURING CONTRACTION (CHIN)
- STRONG – UTERINE WALL CANNOT BE INDENTED DURING A CONTRACTION
(FOREHEAD
DILATION AND EFFACEMENT – OCCUR IN________
DILATION –
EFFACEMENT –
OCCUR IN THE FIRST STAGE OF LABOR –
UC’S PUSH THE PRESENTING PART OF FETUS TOWARDS CERVIX – OPENS
AND THINS
ENLARGEMENT OR OPENING OF CERVIX (FROM CLOSED TO
10CM)- 10CM CERVIX CAN NO LONGER BE PALPATED
THE SHORTENING AND THINNING OF CERVIX (0% - 100%)
Typically, first time moms will______ and then __________
multipara ______
Typically, first time moms will efface and then dilate
do it at the same time
Contractions:
FREQUENCY
- DURATION
- RELAXATION
FREQUENCY
* FROM BEGINNING OF ONE CONTRACTION TO THE BEGINNING OF
ANOTHER
- DURATION
- BEGINNING OF CONTRACTION TO THE END OF
SAME CONTRACTION - RELAXATION
- PERIOD BETWEEN CONTRACTIONS
- ALLOWS BLOOD FLOW TO THE UTERUS AND
PLACENTA THAT WAS REDUCED DURING
CONTRACTION
(2ND POWERS: VOLUNTARY EFFORTS)
- OCCUR ONCE THE CERVIX IS FULLY DILATED
- WOMEN FEELS URGE TO PUSH
(2ND POWERS: VOLUNTARY EFFORTS)
BEARING DOWN POWERS
PELVIS
- GYNECOID (NL FEMALE)
- ANTRHROPOID (APE LIKE)
- ANDROID (NL MALE)
- PLATYPELLOID (FLAT)
ISCHIAL SPINES & STATION
*REFERS TO THE DESCENT OF THE PRESENTING
PART OF THE FETUS (HEAD, BOTTOM, ETC.) IN
RELATION TO THE ISCHIAL SPINE
-5 CENTIMETERS IS ________ THE ISCHIAL
SPINES
above
- TYPES:
- COMPLETE FLEXION-VERTEX
- MODERATE FLEXION-SINCIPUT
- PARTIAL EXTENSION-BROW
- FETAL POSITION
- ROA- RIGHT OCCIPUT ANTERIOR
- ROP- RIGHT OCCIPUT POSTERIOR
- LOA- LEFT OCCIPUT ANTERIOR
- LOP-LEFT OCCIPUT POSTERIOR
- LSA-LEFT SACRUM ANTERIOR
LIGHTNING
* URINARY CHANGES
* BACK PAIN
* INCREASED PRESSURE ON HIPS
* HORMONE RELAXIN
* VAGINAL CHANGES
* BLOODY SHOW
* WEIGHT LOSS-PROGESTERONE & ESTROGEN CHANGES CAUSE ELECTROLYTE SHIFT & WATER
LOSS (0.5-5KG)
* ENERGY SURGE-MATERNAL NESTING INSTINCT FROM INCREASED EPINEPHRINE & DECREASED
PROGESTERONE
* RUPTURE OF MEMBRANES MAY OCCUR
* BRAXTON-HICKS CONTRACTIONS BECOME STRONGER & MORE FREQUENT
USE OF NITRAZINE PAPER:
YELLOW OR GREEN INDICATES MEMBRANES INTACT; BLUE
INDICATES RUPTURE
AMNIOTIC FLUID FERN TEST
STRAW COLORED W/NATURAL ODOR:
- GREENISH- BROWN-
- YELLOW- FETAL HEMOLYTIC DISEASE-
- PORT-WINE COLOR-
STRAW COLORED W/NATURAL ODOR: NORMAL
* GREENISH- BROWN- MECONIUM- POSSIBLE ANOXIA OR HYPOXIA ASSESS BABY FOR
DEVELOPMENTAL DELAYS HRF CHEMICAL PNEUMONIA
* YELLOW- FETAL HEMOLYTIC DISEASE- CHECK COOMB’S ASSESS BABY FOR JAUNDICE
* PORT-WINE COLOR- BLEEDING (ABRUPTION PLACENTAE) EMERGENCY C-SECTION/EMERGENCY BIRTH
Amniotic fluid
NORMAL
*OLIGOHYDRAMNIOS
*HYDRAMNIOS (POLYHYDRAMNIOS)
NORMAL 400-1000 ML (DEPENDS ON
GESTATION)
*OLIGOHYDRAMNIOS- <500 ML 32-36 WKS.-
FAILURE OF KIDNEY DEVELOPMENT
*HYDRAMNIOS (POLYHYDRAMNIOS) 2000 ML 32-
36 GESTATION- FETAL GI OBSTRUCTION/ATRESIA
NORMAL FHR
* TACHYCARDIA HR >
* BRADYCARDIA HR <
NORMAL FHR 110-160
* TACHYCARDIA HR > 160 FOR 10 MINUTES OR LONGER
* BRADYCARDIA HR < 110 FOR 10 MINUTES OR LONGER
ABSENCE OF VARIABILITY: ( think about no activity possiblities) doesn’t always have to be bad
FETUS SLEEPING, SEDATION (OPIATE,
MAGNESIUM SULFATE) CORD COMPRESSION, FETAL HYPOXIA
LOCATING FHR:
LEOPOLD’S MANEUVERS
start at the top to locate what part of the fetus is located in the fundus
The second= location of the fetal back
third : presenting part
fourth= baby cephalic prominence
- FACTORS THAT HELP MAINTAIN FETAL O2 & + RESPONSE TO UTERINE CONTRACTIONS:
- PLACENTAL PROFUSION
- HIGH CONCENTRATION OF FETAL RBC’S
- INCREASED ABILITY OF FETAL HGB TO
CARRY O2 - HIGH FETAL CARDIAC OUTPUTSTRESSFUL TIME FOR FETUS
- EXTERNAL 2 TRANSDUCERS-
ULTRASOUND
FOR FHR & TOCOTRANSDUCER UTERINE
ACTIVITY
- INTERMITTENT OR CONTINUOUS
- AUSCULTATION W/FETOSCOPE OR DOPPLER
INTERMITTENT, DETERMINES FHR ONLY - ELECTRONIC FETAL MONITOR-DETECTS
FETAL HYPOXIA &/OR ACIDOSIS DURING
LABOR-INTERPRETING FHR PATTERNS
MONITORS FHR & UTERINE ACTIVITY - GUIDELINES Q 30 MINS STAGE 1& Q 15
MINS STAGE 2
INTERNAL-
DIRECT METHOD
OF MEASURING FHR &
UTERINE ACTION W/ SPIRAL
ELECTRODE ON FETAL
SCALP & INTRAUTERINE
CATHETER MEASURES
INTENSITY OF
CONTRACTIONS
Baseline ___________
bpm. This is the
vertical center of the
strip.
Horizontal numbers-
increments of _____________
Small boxes=________
Baseline 110-160
bpm. This is the
vertical center of the
strip.
Horizontal numbers-
increments of 30 BPM
Small boxes=10 secs
Normal FHR
______BPM above
baseline
Moderate FHR
over ________ bpm
above baseline
Loss-
Normal FHR 6-
25 BPM above
baseline
Moderate FHR
over 25 bpm
above baseline
Loss-flat line-do
not see any
variability in
FHR from
baseline