Normal Umbilical artery/vein pH

[bigfrank]

Does anyone know the NORMAL values for umbilical artery & vein samples at birth in a baby with APGAR's of 9/9? Thanks

 

[Mumpu]

Should be normal physiological pH's IIRC. You check cord blood if you suspect foetal distress and then your labs show acidosis.

 

[12R34Y]

Does anyone know the NORMAL values for umbilical artery & vein samples at birth in a baby with APGAR's of 9/9? Thanks

http://www.obgyn.net/displayarticle.asp?page=/english/ob/cord_blood_gases


normal pH of a healthy newborn is in the 7.2 range. NOT maternal values.

this internet link has a page at the bottom that summarizes arterial and venous cord gases in a newborn who is healthy and distressed.

later

 

[edmadison]

http://www.obgyn.net/displayarticle.asp?page=/english/ob/cord_blood_gases


normal pH of a healthy newborn is in the 7.2 range. NOT maternal values.

this internet link has a page at the bottom that summarizes arterial and venous cord gases in a newborn who is healthy and distressed.

later

Just for the record, 7.2 is for the cord blood, not the newborn. If the pH in the iinfant was 7.2 five minutes after birth, that would be problematic.

Ed

 

[12R34Y]

Just for the record, 7.2 is for the cord blood, not the newborn. If the pH in the iinfant was 7.2 five minutes after birth, that would be problematic.

Ed

i think bigfrank was asking about cord blood. that's what the attachment is about....cord blood pH should be in the 7.2 range.

man i hated OB (just a side note).

later

 

[Homunculus]

" it seems logical the umbilical cord blood acid-base determination, offers little in the evaluation of a vigorous term newborn with normal APGAR scores."

so what's your *real* question bigfrank? my ped-o-meter tells me more is going on than what's in your question. . . . 🙂 😎

--your friendly neighborhood newborn art-gassing caveman

 

[edmadison]

i think bigfrank was asking about cord blood. that's what the attachment is about....cord blood pH should be in the 7.2 range.

man i hated OB (just a side note).

later

Yes I know, I was responding to the quote "normal pH of a healthy newborn is in the 7.2 range. NOT maternal values". (emphasis added). I wanted to make sure people new that that was cord blood despite it saying newborn. Especially considering a newborn can be 27 days old.

Ed

 

[RonaldColeman]

" it seems logical the umbilical cord blood acid-base determination, offers little in the evaluation of a vigorous term newborn with normal APGAR scores."

so what's your *real* question bigfrank? my ped-o-meter tells me more is going on than what's in your question. . . . 🙂 😎

--your friendly neighborhood newborn art-gassing caveman

Big Frank's real question is: "What is the answer to this question that was on the OBGYN shelf?" I had that question on my exam; I remember finding the answer online, but not sure where.

 

[Doc4Tots]

The most frequently used value is the umbilical arterial pH, since this is blood leaving the baby and best reflects his/her metabolic status. Population studies have yielded a variety of "normal" ranges, with lower limits (Mean – 2SD) from 7.08 to 7.28. Generally, however, 7.20 is accepted as the lower limit of normal, since the incidence of NICU admission, need for assisted ventilation, and multi-organ dysfunction are all significantly increased when UA pH is below this value. Umbilical vein pH should be 0.05 higher.
Note, however, that AAP and ACOG require a UA pH <7.0 for diagnosis of perinatal asphyxia. Also, cord blood gas values correlate very poorly with neurodevelopmental outcome.

 

[ohyeahbaby]

The most frequently used value is the umbilical arterial pH, since this is blood leaving the baby and best reflects his/her metabolic status. Population studies have yielded a variety of "normal" ranges, with lower limits (Mean – 2SD) from 7.08 to 7.28. Generally, however, 7.20 is accepted as the lower limit of normal, since the incidence of NICU admission, need for assisted ventilation, and multi-organ dysfunction are all significantly increased when UA pH is below this value. Umbilical vein pH should be 0.05 higher.
Note, however, that AAP and ACOG require a UA pH <7.0 for diagnosis of perinatal asphyxia. Also, cord blood gas values correlate very poorly with neurodevelopmental outcome.

that was extremely helpful - thank you for your time