Rth 226 Theory Of Neonatal And Pediatric Respiratory Care- Test 1 (Unit 1-4) Study Guide Graded A+

Birth weight {Ans: -Normal term infant: >3000 grams -28 weeks: 1000 grams}What is the difference between early, late and variable deceleraitons? {Ans: •Early decelerations: Type I oSlowing to near or below 120 during uterine contraction. A normal response due to head compression •Late decelerations: Type II o10-30 secs after contraction begins oIndicated fetal distress and asphyxia oBaseline does not return to normal post contraction •Variable decelerations: Type II oIndependent of contractions oIndicates compression/occlusion of the cord or fetal acidemia}What happens during the transition from fetal circulation? {Ans: -1st breath is approximately 40cc VT -Approximately 20-30cc remains in the lung to build FRC. Total FRC usually takes several hours -In premature infants with insufficient surfactant, lungs tend to collapse at the end of each breath. The infant has to create higher pressure to breath each time and the effort to breath does not come easy... end result is RDS}Pre and post ductal blood gas {Ans: •If a right to left shunt occurs thru the ductus arteriosus, the PaO2 levels from the right arm (pre-ductal) often exceeds the PaO2 taken from the umbilical artery or a lower extremity •PaO2 differences greater than 15mmHG indicates right to left shunt