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Critical Care 2 > Stages Of Development > Flashcards

Stages Of Development Flashcards

0
Q

Infant

A

1 month to 1 year

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1
Q

Neonates

A

Birth to 1 month

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2
Q

Child

A

1 year to 12 years

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3
Q

Conception

A

When egg is fertilized

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4
Q

Germ layers

A

Ectoderm
Mesoderm
Endoderm

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5
Q

Ectoderm

A

Brain, spinal cord

Epidermis, hair, nails, lens of eyes, central and peripheral nervous system, skin glands

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6
Q

Mesoderm

A

Heart, kidneys, vessels

Dermis, muscles, bone, connective tissue, lymphoid tissue, reproductive organs, cardiovascular system

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7
Q

Endoderm

A

Pulmonary

Respiratory tract, digestive tract, bladder, thyroid, primary tissue of liver and pancreas

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8
Q

Embryonic stage

A
  • Conception to 5/6 weeks
  • organ development stage
  • outside environment really affects child
  • lung bugs at 24 days, main stem at 28
  • develops oral and nasal openings
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9
Q

Pseudoglandular

Part 1

A
  • 5 to 16 weeks
  • week 7, diaphragm and tissue for epiglottis formed
  • week 8, vocal cords appear, heart completely formed and beating, goblet cells
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10
Q

Pseudo glandular

Part 2

A
  • 10 weeks, cilia form
  • 12 weeks, all lung lobes
  • 16 week hear and respond to sound
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11
Q

Canalicular

A

17-24 weeks

  • type I & II cells develope
  • type II immature surfactant
  • 24 weeks, alveolar ducts developed, terminal bronchi multiply and lengthen
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12
Q

Saccular

A
  • 24 to 28 weeks
  • terminal airways (saccules)
  • A.C. Surface can now support life
  • 28 to 36 weeks, early alveoli develops, mature surfactant produced
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13
Q

Alveolar

A
  • 36 to 40 weeks
  • lecithin(PC) production increases
  • alveoli increase rapidly
  • alveoli increase in number and size up to 8 years
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14
Q

Surfactant

A
  • Phosphatidylcholine (PC) aka lithisin immature
  • phosphatisyglycerol (PG) mature
  • lipids and proteins
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15
Q

Licithin/sphingomyclin

L/S test

A

Measures amount of licithin compared to sphingomyclin in amniotic fluid! 2:1 ratio is mature lungs! Usually occures around week 35 and indicates little chance of developing RDS.

16
Q

Shake or foam test

A

Amniotic fluid is mixed with ethanol and shaken for 15 seconds. Lungs are mature if a foam ring remains after 15 mins! If no ring perform L/S test!

17
Q

Non stress test

A

Increase of 15bpm over baseline and lasts 15 sec! Normal reactive(positive) is 2 accelerations durning fetal body movement in 20min window! Negative NST when no accelerations over 2 20 min windows!

18
Q

Positive contraction stress test with negative non stress test

A

Prolonged hypoxia

Critical Care 2 (1 decks)

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