The Validity of Foetal Capillary Blood Samples during Labour

FIGO consensus guidelines on intrapartum fetal monitoring: Adjunctive technologies

“…Studies in fetal monkeys showed a good correlation of acid-base parameters between scalp and carotid blood [6], and human data have shown similar correlations between pH and lactate values obtained in scalp blood and those recorded shortly after birth in the umbilical artery and vein [7][8][9][10][11]. However, correlation of these values with newborn outcome depends on the time interval between scalp sampling and birth [12].…”

Short communications

“…Numerous investigations revealed a good correlation between pH-values from FBA and those determined from systemic blood. pH-values from fetal scalp blood sampled shortly before delivery and blood taken from the umbilical cord immediately after delivery showed a high correlation [3,7,12,14,16,19,20]. Experimental studies on animals during labor revealed a good correlation between pH-values from scalp and central circulation [1,8].…”

“…These data were evaluated in fetal rhesus monkeys and lambs where catheters had been implanted into the carotid artery and jugular vein; blood was sampled simultaneously from the scalp and the larger vessels. In view of some authors' results [1,4,17,20], there is evidence that caput succedaneum has no sizeable influence on scalp blood pH-values and has been long overestimated. Severe caput edema appears only in 2.43% of the newborns [6].…”

“…[21] et ASSALI [2]. En accord avec d'autres auteurs [3,7,12,14,16,19,20] Paroxysmal supraventricular tachycardia (PST) has been reported to occur prenatally and persist ppstnatally. Although the arrhythmia is frequently benign, its presence indicates a need for immediate evaluation of the neonate [l, 3].…”

“…[21J und ASSALI[2] an der FBA geübten Kritik auseinander. In Übereinstimmung mit anderen Autoren[2, 7,12,14,16,19,20] konnten wir eine gute Korrelation zwischen dem pH bei FBA und dem in der Nabelschnurarterie (UA) finden. Der Korrelationskoeffizient betrug:feststellen.…”