Neonatology Flashcards
When does the development of the CVS start in the foetus?
Toward the end of the 3rd week
When does the heart start to beat in the foetus ?
Beginning of the 4th week
When is the critical period of heart development ?
From day 20-50 after fertilization
How does the foetus receive oxygenated blood ?
Via the umbilical vein - Ductus Venosus
How does the blood get to the foetal left atrium?
Foramen Ovale
How does the blood get to the right ventricle in the foetus ?
Patent ductus Arteriosus
What is the oxygen saturation in the foetal body ?
60-70%
What are the 3 main roles of the ductus arteriosus ?
Protects lungs against circulatory overload.
Allows the right ventricle to strengthen.
Carries low oxygen saturated blood.
What are the 3 main roles of the Ductus Venosus ?
Foetal blood vessel connecting the umbilical vein to the IVC.
Blood flow regulated via sphincter.
Carries mostly oxygenated blood.
What is the normal blood pressure for a new born of 1 hr in age ?
70/44
What is the normal blood pressure for a new born of 1 day in age ?
70(+/-/9)/42( +/- 12)
What is the normal blood pressure for a new born of 3 days in age ?
77 (+/-12)/49 (+/-10)
What is the normal respiratory rate for a full term new born ?
30-60
What is the normal heart rate for a full term new born ?
120-160bpm
New born babies lack the shivering thermo genesis, true or false?
True
When does physiological jaundice occur in the new born ?
DOL 2-3
Dissapears within 7-10 days
What is a normal weightloss in a new born and what is this due to ?
up to 10% is normal due to:
Shift of interstitial fluid to intravascular
Diuresis