RT Book, Section
A1 Lo, Clara
A1 Wong, Wendy
A2 Stevenson, David K.
A2 Cohen, Ronald S.
A2 Sunshine, Philip
SR Print(0)
ID 1109798729
T1 Polycythemia
T2 Neonatology: Clinical Practice and Procedures
YR 2015
FD 2015
PB McGraw-Hill Education
PP New York, NY
SN 9780071763769
LK accesspediatrics.mhmedical.com/content.aspx?aid=1109798729
RD 2024/04/19
AB The  normal  hematocrit  of  a  healthy  term  infant  ranges  from  45%  to  61%.  This  relatively  high  red  cell  mass  is  an  adaptive  response  to  the  hypoxic  intrauterine  environment.  Neonatal  polycythemia,  an  abnormal  elevation  of  red  cell  mass,  is  most  often  defined  in  textbooks  as  a  venous  hematocrit  of  65%  or  more.  It  occurs  in  1.5%–4%  of  healthy  live  births.1  Passive  erythrocyte  transfusion  and  increased  fetal  red  cell  production  are  2  major  causes  for  neonatal  polycythemia.