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Q: What is the normal value of fetal scalp pH is?
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The pH of blood is slightly basic what pH numbers most closely reflects normal blood pH?

Normal Ph value of Blood 7.35 to 7.40.


Which pH value is normal?

The pH scale runs from 1.0 to 14.0. Neutral pH is 7.


What is the normal PH value?

Between 0 and 14.


What is the pH scale of normal acid rain?

Normal clean rain has a pH value of between 5 and 5.5, which is slightly acidic


How is the need for cesarean section diagnosed?

Ultrasound testing, fetal heart monitors, oxygen deprivation may be determined by testing the pH of a blood sample taken from the baby's scalp and checking the amniotic fluid for meconium.


Fetal scalp pH testing?

DefinitionFetal scalp pH testing is a vaginal procedure performed when a woman is in active labor to determine if the baby is getting enough oxygen.Alternative NamesFetal scalp blood; Scalp pH testing; Fetal blood testing - scalpHow the test is performedThe procedure typically takes about 5 minutes. The mother lies on her back with her feet in stirrups. If her cervix is dilated at least 3 to 4 centimeters, a plastic cone is placed in the vagina and fit snugly against the scalp of the fetus.The scalp of the fetus is cleansed and pierced, and a small blood sample is taken for examination. The blood is collected in a thin tube. The tube is either sent to the hospital laboratory or analyzed by a machine in the labor and delivery department. In either case, results are available in just a few minutes.If the woman's cervix is not dilated enough, it is impossible to perform this test.How to prepare for the testThe health care provider will explain the procedure and its risks. There isn't always a separate consent form for this procedure because many hospitals consider it part of the general consent form you signed at admission.How the test will feelThe procedure should feel like a long pelvic exam. At this stage of labor, many patients already have had epidural anesthesia and may not feel the pressure of the procedure at all.Why the test is performedUsually this test is performed to obtain information about fetal acid-base balance (blood pH). Sometimes fetal heart monitoringdoesn't provide enough information about the well-being of a baby. In these cases, testing the scalp pH can help the doctor decide whether the fetus is getting enough oxygen during labor. This helps determine whether the baby is healthy enough to continue labor, or if a forceps delivery or cesarean section might be the best route of delivery.Although the test is not uncommon, most deliveries do not involve fetal scalp pH testing.Normal ValuesNormal fetal blood sample results are:Normal pH: 7.25 - 7.35Borderline pH: 7.20 - 7.25What abnormal results meanA fetal scalp blood pH level less than 7.20 is considered abnormal.In general, low pH suggests that the baby does not have enough oxygen, which could mean that the baby is not tolerating labor very well. However, the results of a fetal scalp pH sample need to be interpreted in the context of each individual labor. The provider may feel that the results indicate that the baby needs to be delivered quickly, either by forceps or by cesarean section.Fetal scalp pH testing may need to be repeated a few times during a complicated labor to continue to check on the baby.What the risks areRisks include the following:Continued bleeding from the puncture site (more likely if the fetus has a pH imbalance)InfectionBruising of the baby's scalpSpecial considerationsThis test is not recommended for mothers with infections, such as HIV or hepatitis C.ReferencesGarite TJ. Intrapartum fetal evaluation. In: Gabbe SG, Niebyl JR, Simpson JL, eds. Obstetrics – Normal and Problem Pregnancies. 5th ed. New York, NY: Churchill Livingstone; 2007:chap 15.Reviewed ByReview Date: 07/26/2010Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.


What is the normal pH of a stream?

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Acid Rain generally has a pH of less than 5, where normal rain is about 5.6. The lower the pH value, the more acidic is the rain.