Pregnancy I Flashcards
What is the function of the Skene duct?
Lubrication and antimicrobial properties
What happens to the Bartholin duct opening during arousal?
It swells
Where is the perineum located?
Between vagina and anus
When might the perineum need to be cut or tear?
During labor
What is the fundus?
Hollow organ farthest from cervix
What is the function of the cervix?
Helps keep the baby in the uterus
What is the size of the cervix?
About 2-3 cm
How does the cervix feel under normal conditions?
Elasticity of nose
Describe the external os.
Round
How does the external os change after pregnancy?
Smiley face shape
Where is the uterus located?
Behind the bladder
What can happen if the bladder is too full during childbirth?
Baby can come down
What can happen postpartum if the bladder is too full?
Fundus cannot come back down
What are the two types of influences on childbearing?
Hereditary and Environmental
What is a genetic counselor?
A professional who provides guidance and support on genetic disorders and inherited conditions.
What are autosomal dominant traits?
Expressed by dominant gene on a non-sex chromosome
What is the chance of passing on an autosomal dominant trait to a child?
50%
Give examples of autosomal dominant traits.
Huntington’s disease, neurofibromatosis
What are autosomal recessive traits?
Expressed if a person receives two copies of a recessive gene
Name some examples of autosomal recessive diseases.
Tay-Sachs, sickle cell, cystic fibrosis, PKU
Need two carriers for the trait to be expressed in an autosomal recessive trait t/f
TRUE
What are some examples of autosomal recessive disorders?
PKU, Tay Sachs, Sickle cell, cystic fibrosis
What is the chance of gene expression when both parents are carriers of an autosomal recessive trait?
1/4 or 25%
What is the chance of not having the disease when both parents are carriers?
25%
What is the chance of being a carrier for the gene when both parents are carriers?
50%
What are X-Linked traits?
Males usually affected, females carriers
Give examples of X-Linked traits.
Color blindness, Duchenne’s muscular dystrophy, hemophilia A, Turner syndrome
What are some common symptoms of Turner syndrome?
Less fertility, barrel chest, altered appearance
How is X-linked inheritance different from other types with inheritance?
Dads don’t pass it on to sons
What is a trisomy?
Extra copy of a chromosome
What is monosomy?
Missing a chromosome
What is polyploidy?
One or more extra sets of chromosomes
What are structural chromosomal abnormalities?
Missing, added, or rearranged part of a chromosome
What is a possible cause of spontaneous abortion in the first trimester?
Polyploidy
Which gender is fragile X syndrome more commonly seen in?
Males
What is an example of Monosomy?
Turner syndrome
What is an example of a structural abnormality?
Fragile X syndrome
Substances that can cause abnormalities in fetal development
teratogens
What are the effects of teratogens in embryonic development?
Abnormalities in organ development, growth, and function
What can teratogens lead to?
Birth defects or developmental disabilities
When do teratogens have the most impact?
During the first trimester of pregnancy
Name three examples of teratogens mentioned in the text.
Psych meds, alcohol, tobacco
What are some teratogens that can influence the environment?
Alcohol, Aminoglycosides, Anticonvulsant agents, Antihyperlipidemic agents (statins), Antineoplastic agents, Antithyroid drugs, Cocaine, Diethylstilbestrol (DES), Folic acid antagonists, Lithium, Mercury, Retinoic acid, Tetracycline, Tobacco, Warfarin
What are some infections that can influence the environment as teratogens?
Cytomegalovirus, Herpes simplex virus, HIV, Parvo, Rubella, Syphilis, Toxoplasmosis, Varicella, Zika
What should you do if someone has chicken pox?
Keep them away from babies less than 1 year and pregnant moms.
What is one role of the nurse in genetic counseling?
Recognize need for genetic counseling and gather medical history. provide education & emotional support.
What should you consider when talking to moms?
Family history, medical history, risk factors (teratogens)
Why are hot tubs bad for babies and what is the limit?
Too much heat can be bad, no more than 10 minutes for sure, preferably not at all though.
What should all pregnant women take?
Folic acid
What is the process of fertilization?
Sperm and ovum unite to form a zygote.
What is the lining of the uterus called during pregnancy?
Decidua.
What hormone is secreted by the zygote?
hCG.
What can occur around week 2 of pregnancy after implantation?
Spotting.
What is the process of implantation?
Zygote enters uterus and implants in the fundus in the uterus
What happens during the preembryonic period? and how long does it last?
Inner part of zygote develops into fetus and outer part develops into the placenta. two weeks.
What hormone stimulates estrogen and progesterone and protects pregnancy?
HcG. will protect the pregnancy until the placenta takes over in a few weeks.
What can implantation cause?
Spotting or small bleeding, which can be confused for a light period —they think theyre not pregnant
What happens during the embryonic period?
Development of the central nervous system (CNS)
What happens during week 3 of the embryonic period?
CNS develops
What happens during week 4 of the embryonic period?
Neural tube closes
What happens during week 5 of the embryonic period?
Heart begins to beat
What is the importance of folic acid?
Prevents spina bifida
When does the heartbeat begin?
5th week
What happens during Week 6 of the embryonic period?
Upper and lower extremities are defined
What happens during Week 7 of the embryonic period?
Face more human looking
What happens during Week 8 of the embryonic period?
Well-defined fingers & toes, external genitalia begins to differentiate
At what week does external genitalia begin to differentiate?
Week 8
What happens during the fetal period?
Fetal movements, urine production, gender determination
What happens during weeks 9-12 of the fetal period?
Fetal movements, urine production, gender determination
What happens during weeks 13-16 of the fetal period?
Rapid body growth
What happens during weeks 17-20 of the fetal period?
Increased fluttering movements, development of eyebrows, head hair, lanugo, and vernix
When does the first trimester end?
12th week
At what week does the baby close its eyes?
9 weeks
When will the baby open its eyes again?
26 weeks
What happens during weeks 21-24 of the fetal period?
Little subcut fat, red and translucent skin, surfactant barely produced, can survive - ICU babies
What happens during weeks 25-28 of the fetal period?
Plumper, eyes open, rotates to head down position
What happens during weeks 29-32 of the fetal period?
Toenails & fingernails & skin pigmentation
What happens during weeks 33-38 of the fetal period?
Mainly gaining weight
How does the fetus look during weeks 33-38 of the fetal period?
More plumper with abundant subcutaneous fat
What is fertilization age?
Not really used in practice
How is gestational age determined?
By last menstrual period
What is the typical range for gestational age?
38-42 weeks
What is the key function of the placenta?
Respiration
Describe the fetal side of the placenta.
Smooth
Describe the maternal side of the placenta.
Rough where it attaches to uterus
What is the composition of the umbilical cord?
2 arteries & 1 vein (AVA)
What do the arteries in the umbilical cord carry?
Deoxygenated blood & waste products
What does the vein in the umbilical cord return?
Oxygenated blood and nutrients