neonatal physiology

Question 1

when is critical period of heart development

Answer 1

20-50 days after fertilisation

Question 2

function of ductus arteriosus

Answer 2

• protects lungs against circulatory overload
• allows the right ventricle to strengthen
• carries low oxygen saturated blood

Question 3

normal heart rate full term newborn

Answer 3

120-160bpm

Question 4

tachycardia newborn

Answer 4

> 160bpm

Question 5

bradycardia newborn

Answer 5

<100bpm

Question 6

normal blood pressure @ 1hr age

Answer 6

70/44

Question 7

normal blood pressure @ 1 day age

Answer 7

70 +/- 9 / 42 +/- 12

Question 8

normal blood pressure @ 3 days age

Answer 8

77 +/- 12. / 49+/-10

Question 9

normal resp rate full term newborn

Answer 9

30-60/ min

Question 10

what component of thermoregulation do newborn babies not possess

Answer 10

lack shivering thermo genesis, thus need a metabolic production of heat

Question 11

what is used as a source of heat in newborn babies

Answer 11

brown fat

Question 12

describe loss of heat by radiation

Answer 12

heat dissipated to colder objects

Question 13

describe loss of heat by convection

Answer 13

heat loss by moving air

Question 14

describe loss of heat by evaporation

Answer 14

we are born in water

Question 15

describe loss of heat by conduction

Answer 15

heat loss to surface on which baby lies

Question 16

management of neonate not passing urine for first 24hours

Answer 16

normal

Question 17

do premature infants have decreased or increased insensible water loss?

Answer 17

increased

immature skin and breathing

Question 18

Hb of newborn

Answer 18

15-20g/l

Question 19

Hb of week 10 baby

Answer 19

11.4g/l

Question 20

Hb of week 20 baby

Answer 20

12g/l