REFERENCES

1. Sykes GS, Ashworth F, Johnson P, et al. Do Apgar scores indicate asphyxia? Lancet 1982; i:494-6.

2. Silverman F, Suidan J, Wasserman J, Antoine C, Young BK. The Apgar score: Is it enough? Obstet Gynecol 1985; 66:331-6.

3. Suidan J, Young BK. Acidosis in the vigorous newborn. Obstet Gynecol 1985; 65:361-4.

4. Sykes GS, Sampson JE, Papsi VM, Creasy RK. Fetal distress and the condition of newborn infants. Br Med J 1983; 287:943-5.

5. Low JA. The role of blood gas and acid base assessment in the diagnosis of intrapartum fetal asphyxia. Am J Obstet Gynecol 1988; 159:1235-40.

6. Goldaber KG, Gilstrap LC. Correlations between clinical events and umbilical cord blood acid base and blood gas values. Clinical Obstetric Gynecol 1993; 36:47-59. Westgate J, Garibaldi J, Greene KR. Umbilical cord blood gas analysis: a time for quality data. Br J Obstet Gynaecol 1994; 101:1054-63

8. Spencer JAD, Ward RHT. Intrapartum Fetal Surveillance 1993. Royal College of Obstetricians and Gynecologist Press, London, 392.

9. Eskes TKAB, Jongsma HW, Honx CW. Percentiles for gas values in human umbilical cord blood. Eur J Obstet Gynecol Reprod Biol 1983; 14:341-6.

10. Perkins RP, Weaver PA, Sweeney WJ. Questioning the Practice of Routine Umbilical Cord Blood pH Sampling at Delivery. The Journal of Maternal Fetal Medicine 1993; 2:191-6.

11. Yeomans ER, Hanth JC, Gilstrap LC, Strickland DM. Umbilical cord pH, pC02 and bicarbonate following uncomplicated term vaginal deliveries. Am J Obstet Gynecol 1985; 151:798-800.

12. Koch G, Wendei H. Adjustment of arterial blood gas and acid base balance in the normal newborn infant following the first week of life. Biol Neonate 1968: 12:136.

13. Clark RB, Cooper JO, Stephen SR, Brown WE. Umbilical cord blood acid base studies _ effect of normal labour and obstetric manipulation. Obstet Gynecol 1969; 33:23.

14. Ylppo A. Neugeboreven, hunger und intoxikation _ sazidosis in ihven beziehurgen zueinander. Zeitschrift kinderheilk 1916; 14:268.

15. Winkler CL, Hauth JC, Tucker JM, et al. Neonatal complications at term as related to the degree of umbilical artery acidemia. Am J Obstet Gynecol 1991; 164:637-41.

16. Duerbeck NB, Chaffin DG, Seeds JW. A practical approach to umbilical artery pH and blood gas determination. Obstet Gynecol 1992; 79:959-62.

17. Rosen KG, Murphy KW. How to assess fetal metabolic acidosis from cord samples. J Perinatal Med 1991; 19:221-226.

18. Johnson JW, Richardo DS, Wagman RA. The case for routine umbilical blood acid-base studies at delivery. Am J Obstet Gynecol 1990; 162:621-5.