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20 Cards in this Set
- Front
- Back
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What are presumptive pregnancy signs?
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Amenorrhea
Nausea and/or vomiting Urinary frequency, nocturia Fatigue Breast tenderness, tingling, enlargement, or color change Fainting or dizziness Skin changes Congestion of vaginal mucus Maternal belief she is pregnant Chadwick's sign Increased basal temp Montogomery follicles formation |
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What are probable pregnancy signs?
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Enlargement of the abdomen
Enlargement of the uterus Palpation of the fetal outline Ballottment (16-20 weeks) Change in uterus shape Piskacek's sign Hegar's sign Goodell's sign Palpation of braxton hicks contractions Positive pregnancy test |
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What are positive pregnancy signs?
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Fetal heart tones
Sonographic evidence of pregnancy Palpation of fetal movement |
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How many days in pregnancy?
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280 days
10 lunar months 9 calendar months |
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Early fetal development
Week 2 |
bilaminar development of endoderm and ectoderm
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Early fetal development
Week 3 |
Mesoderm development (trilaminar disk)
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Early fetal development
Week 4 |
Heart begins to beat; neural tube closes at separate sites
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Early fetal development
Week 5 |
Rapid brain development
Eyes begin to develop Cephalic-caudal growth |
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Early fetal development
Week 6 |
Nose, mouth, palate forms
Limbs differientiate Fingers and toes formation |
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Early fetal development
Week 7 |
Neck region established
Abdomen less protruded Distinct human characteristics |
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Early fetal development
Week 8 |
All essential internal and external structure present
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Ultrasound accuracy by trimester
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First trimester - CRL is accurate to 3-5 days
Second trimester - biparietal diameter and femur length most accurate to within 7-10 days Third trimester - after 26 weeks all measurements less accurate; biparietal diameter and femur length 14-21 days |
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Fetal development
1st trimester |
Intestines fully in abdomen and out of umbilical cord
External genitalia have male or female characteristics Weight: 1/2 - 1 oz; CRL 2.2" swallows, breathes, urinates, moveslimbs, squints, frown,s opens and shuts mouth |
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Fetal development
Weeks 13-16 (fourth lunar month) |
sex is clearly distinguishable during 14th week
Eyelids are fused and head growth slows Body growth accelerates - legs grow slower than arms Fingernails develop NOT toenails Weight: 3.5-4 oz; CRL 4.5" |
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Fetal development
Weeks 17- 20 (fifth lunar month) |
Legs reach total length and toenails develop
Eyelids remain fused Stronger fetal movement (felt ~ 18 wks) Hiccups Vernix caseosa covers entire body FHT heard with fetoscope Weight: 1 lb (500 gms); CRL ~ 6.5" |
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Fetal development
Weeks 21-24 (sixth lunar month) |
Hair growth prominent
Body covered with lanugo Eyebrows, eyelashes, head hair present Wrinkled, translucent, red skin without subcutaneous fat Can make a fist and grip Crying and sucking Brown fat forms Weight 1.25 lbs; CRL ~ 8" |
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Fetal development
Weeks 25--28 (seventh lunar month) |
Some fat stores begin
Surfactant production Thick vernix caseosa covers entire fetus Eyes open and shut Substantive weight gain begins Weight 2.25 lbs (1000 gms); CRL ~ 9" |
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Fetal development
Weeks 29-32 (eighth lunar month) |
Lanugo on face disappears
Fingernails reach end of fingers; toenails present NOT at the end Eyes are open and pupillary light reflex Fat starting to smooth out wrinkles Can control body temp and rhythmic breathing Weight 3.75 lbs; CRL ~ 11" |
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Fetal development
Weeks 33-36 (ninth lunar month) |
Skin is smooth, without wrinkles, rounder body
Toenails reach end of toes Left testicle descends into scrotum Weight 5.5 lbs (2500 gms); CRL ~ 12.5" |
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Fetal development
Weeks 37-40 (tenth lunar month) |
Protuberant mammary glands
Both testes in scrotum No lanugo Nails beyond fingers and toes Pulmonary, gastrointestinal, renal systems permit extrauterine survival Weight 7.5 lbs; CRL ~ `14" |
