NURS 461 Lecture 10: 10.12.16NormalNewbornAdaptationToNormalLife
Document Summary
Respiratory system: respiratory care occurs d/t: Compression of thorax: change in pressure so chest re-expands and pulls air in. Thermal stimuli: temp change from intrauterine to extrauterine. Chemical factors: low ph, high co2, low o2. Initial inspiration info is sent to resp center in the medulla. Misc stimuli: handling the baby, rubbing the baby, flick baby feet: initial respiration is the most difficult bc need to inflate. Surfactant prevents alveoli from collapsing which helps to keep the lungs inflated. If no surfactant, nave to reinflate the lungs each breath: should breathe within 1 minute of delivery- initial rate will be high ~80 breaths per minute, general respiratory characteristics: Increases with prone position and in immature infants. Inspiration & expiration should follow in uninterrupted sequence. Cardiovascular adaptations: usually occur d/t pressure changes, occur simultaneously with respiratory adaptations, not as dramatic or easily observed, but equally as important, fetal circulation: in utero, blood bypasses lungs.
