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| Planes of least Dimension |
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| It has the least room, and it is here that most instances of arrest of progress take place. This plane extends from the apex of the subpubic arch, through the ischial spines, to the sacrum, usually at or near the fourth or fifth sacral vertebrae. |
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| Planes of Greatest Dimensions |
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| The roomiest part if the pelvis and is almost circular |
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| A hypothetic curved line joining the center point of each of the four planes of the pelvis, marking the center of the pelvic cavity at every level. |
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| It is a cartilaginous joint |
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| The brim is the inlet to the true pelvis and is almost circular except posteriorly where the sacral promontory jets into the brim. |
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The outlet is diamond shaped ad partly bound by ligaments. It can be described in two ways anatomical structures and by obstetric dimensions.
the pelvic outlet is the distance between the ischial tuberosities and the pubic arch |
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| the distance between the bony points of ischial spines, and it typically exceeds 12 cm |
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| 10 cm pushing to delivery of the baby |
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An accessory lobe that is placed at some distance from the main placenta |
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| The membranes are folded back on the fetal surface and insert inward on themselves. The placenta is situated outside of the chorion. |
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The skin and subcutaneous tissue of the anterior or posterior perineum |
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| Superficial perineal muscles they can extend downwards from the posterior and or lateral vaginal walls |
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| The decidual lining of the uterus is shed, which contains blood and serum |
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| The first 2 hours after delivery bonding |
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| Significant Pelvic Diameters |
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| Lactation Amenorrhea Method |
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| Utero-Placental insufficiency |
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| Pelvic Inflammatory disease |
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| Herpes virus hominis type 2 |
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| Cells forming the outer layer of a blastocyst provides nutrients to embryo. Develops into largest part of the placenta |
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Zygote turns into blastocyst four components
1. Zuna pelluciola
2.Intercell mass
3. outers Layers trophoblast
4. Fluid filled cavity |
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First day of LMP
plus 7 days
minus 3 months
= EDD |
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Initial fetal movement
"butterflies" |
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Produced my the pituitary glands
Sustains milk production
regulates milk
mothers ability to attach emotionally to newborn |
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| Tiny projections of placental tissue looks like fingers and contains the same genetic material as the fetus |
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| Thick layer of mucus membrane which lines the uterus during pregnancy and is shed with afterbirth |
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| Is a hormone that works with estrogens to prepare the uterus for implantation |
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| When the cervix opens sufficiently to allow the fetal head to pass through |
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| When the cervix becomes shorter |
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| refers to where the presenting part is in the pelvis |
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Contractions are responsible for achieving effacement and dilation of the cervix.
Contractions are involuntary
intermittent and regular
most labors painful
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| When the fetal head goes back up inside when pushing stops "turtle sign" |
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| Difficult or obstructed labor |
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| No decent or cervical change |
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| Early labor can go on for days |
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| Regular Contractions cervix gets to 6 cm |
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| Regular contraction dilated to 10 cm |
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| is the number of red blood cells packed by centrifuge in a given volume of blood |
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| is the oxygen carrying capacity of red blood cells. It is normally 33% of the hematocrit |
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| The number of past pregnancies that have gone to viable |
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| Profuse vaginal secretion begins in first trimester |
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| Trimesters Divided into weeks |
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Definition
1st 1-12 weeks
2nd 13-17 weeks
3rd 28 -40 weeks |
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Definition
| Maintain Coupus luteum during first trimester |
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| Fetus most susceptible to teratogens |
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Definition
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| Fetal stage of development starts at what week |
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| Typical human gestation from conception is |
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| Strict vegan mother most likely to be deficient in |
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| Position of the fetal head in the uterus. The head is tilted to the shoulder, causing the fetal head to no longer be in line with the birth canal. |
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Definition
| Failure of both rotation and decent of the head from the transverse position or just above the levels of the spines |
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Term
Woods Maneuver
(corkscrew) |
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Definition
| Progressively rotate the anterior surface of the posterior shoulder in a corkscrew fashion to release impacted shoulder. |
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Definition
| Vacuum cup is attached to baby head by suction |
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| The wind blowing sound while listening to baby |
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| When the head is presenting well but is truly to large for the mothers pelvis |
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