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John W.c. Johnson - One of the best experts on this subject based on the ideXlab platform.

  • correlation of head to body delivery intervals in shoulder dystocia and umbilical artery acidosis
    American Journal of Obstetrics and Gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    OBJECTIVE: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. STUDY DESIGN: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. RESULTS: The mean umbilical artery pH of shoulder dystocia cases (7.23 +/-.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 +/-.069), P <.001. Head-to-body delivery intervals (available for 44 cases) were not associated with statistically significant alterations in umbilical artery pH (r(2) =.0004), PCO(2) (r(2) =.011), or base deficit (r(2) =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score (r =.0278). CONCLUSION: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status.

  • Correlation of head-to-body delivery intervals in shoulder dystocia and umbilical artery acidosis.
    American journal of obstetrics and gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    Abstract Objective: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. Study Design: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. Results: The mean umbilical artery pH of shoulder dystocia cases (7.23 ±.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 ±.069), P r 2 =.0004), P CO 2 ( r 2 =.011), or base deficit ( r 2 =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score ( r =.0278). Conclusion: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status. (Am J Obstet Gynecol 2001;185:268-74.)

Shawn P. Stallings - One of the best experts on this subject based on the ideXlab platform.

  • correlation of head to body delivery intervals in shoulder dystocia and umbilical artery acidosis
    American Journal of Obstetrics and Gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    OBJECTIVE: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. STUDY DESIGN: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. RESULTS: The mean umbilical artery pH of shoulder dystocia cases (7.23 +/-.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 +/-.069), P <.001. Head-to-body delivery intervals (available for 44 cases) were not associated with statistically significant alterations in umbilical artery pH (r(2) =.0004), PCO(2) (r(2) =.011), or base deficit (r(2) =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score (r =.0278). CONCLUSION: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status.

  • Correlation of head-to-body delivery intervals in shoulder dystocia and umbilical artery acidosis.
    American journal of obstetrics and gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    Abstract Objective: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. Study Design: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. Results: The mean umbilical artery pH of shoulder dystocia cases (7.23 ±.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 ±.069), P r 2 =.0004), P CO 2 ( r 2 =.011), or base deficit ( r 2 =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score ( r =.0278). Conclusion: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status. (Am J Obstet Gynecol 2001;185:268-74.)

Rodney K. Edwards - One of the best experts on this subject based on the ideXlab platform.

  • correlation of head to body delivery intervals in shoulder dystocia and umbilical artery acidosis
    American Journal of Obstetrics and Gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    OBJECTIVE: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. STUDY DESIGN: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. RESULTS: The mean umbilical artery pH of shoulder dystocia cases (7.23 +/-.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 +/-.069), P <.001. Head-to-body delivery intervals (available for 44 cases) were not associated with statistically significant alterations in umbilical artery pH (r(2) =.0004), PCO(2) (r(2) =.011), or base deficit (r(2) =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score (r =.0278). CONCLUSION: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status.

  • Correlation of head-to-body delivery intervals in shoulder dystocia and umbilical artery acidosis.
    American journal of obstetrics and gynecology, 2001
    Co-Authors: Shawn P. Stallings, Rodney K. Edwards, John W.c. Johnson
    Abstract:

    Abstract Objective: Our goal was to determine the effect of shoulder dystocia on umbilical artery acidosis. Study Design: We performed a retrospective analysis of 134 mother-infant pairs of shoulder dystocia cases at our institution from January 1, 1994, through December 31, 1997. Cases were identified from the obstetric database, and charts were abstracted for demographics, head-to-body delivery interval, umbilical Blood Gas Parameters, and neonatal outcome. Pooled student t tests were used to compare mean Blood Gas values with data previously reported from our patient population. Regression analysis was performed regarding head-to-body delivery interval and Blood Gas Parameters. Results: The mean umbilical artery pH of shoulder dystocia cases (7.23 ±.082) was less than the mean arterial pH of all vaginal deliveries in our institution (7.27 ±.069), P r 2 =.0004), P CO 2 ( r 2 =.011), or base deficit ( r 2 =.006). Increasing head-to-body delivery interval was also not significantly correlated with decreasing 5-minute Apgar score ( r =.0278). Conclusion: In our study population, shoulder dystocia resulted in statistically significant but clinically insignificant reductions in mean umbilical artery Blood Gas Parameters. No statistically significant linear relationship was identified between the head-to-body delivery interval and fetal acid-base status. (Am J Obstet Gynecol 2001;185:268-74.)

Robert Hecht - One of the best experts on this subject based on the ideXlab platform.

  • Maternal Body Mass Index Does Not Affect Neonatal Umbilical Artery Blood Gas Parameters
    Journal of pregnancy, 2013
    Co-Authors: Salam E. Chalouhi, Caroline Salafia, Magdy Mikhail, Robert Hecht
    Abstract:

    This study was undertaken to assess the impact of obesity on fetal well-being in glucose-tolerant and nonhypertensive women. Medical charts of all patients admitted to the labor and delivery department at our institution between January, 2011 and July, 2011 were retrospectively reviewed. Patients with diabetes/impaired glucose tolerance or hypertension were excluded. A total of 100 women, 50 lean and 50 obese, were included. Umbilical artery Blood Gas Parameters (BGPs) were compared in lean (

  • maternal body mass index does not affect neonatal umbilical artery Blood Gas Parameters
    Journal of Pregnancy, 2013
    Co-Authors: Salam E. Chalouhi, Caroline Salafia, Magdy Mikhail, Robert Hecht
    Abstract:

    This study was undertaken to assess the impact of obesity on fetal well-being in glucose-tolerant and nonhypertensive women. Medical charts of all patients admitted to the labor and delivery department at our institution between January, 2011 and July, 2011 were retrospectively reviewed. Patients with diabetes/impaired glucose tolerance or hypertension were excluded. A total of 100 women, 50 lean and 50 obese, were included. Umbilical artery Blood Gas Parameters (BGPs) were compared in lean (<25 kg/m2) and obese (≥30 kg/m2) women. Obese and lean women were comparable with respect to all baseline characteristics. There was no difference in any of the BGP or Apgar scores between obese and lean patients. Pearson’s correlation coefficient found no significant correlation between BMI and BGP/Apgar scores. Maternal obesity does not seem to affect BGP and fetal well-being in glucose-tolerant and nonhypertensive women.

Avash Singh - One of the best experts on this subject based on the ideXlab platform.

  • Umbilical artery Blood Gas Parameters in neonates with early-onset seizures who die
    Obstetrical & Gynecological Survey, 2005
    Co-Authors: Keith Williams, Avash Singh
    Abstract:

    Hypoxic-ischemic encephalopathy is diagnosed when newborn infants have certain neurologic abnormalities, including early-onset seizures, within 24-48 hours of admission to neonatal intensive care. The American College of Obstetricians and Gynecologists defines hypoxia severe enough to cause hypoxic-ischemic encephalopathy as a group of findings including a pH below 7.0; an Apgar score of 0-3 for longer than 5 minutes; neurologic sequelae; and cardiovascular, Gastrointestinal, hematologic, pulmonary, or renal dysfunction. Early-onset seizures are the clearest indicator of moderate to severe disease with hypoxic-ischemic encephalopathy. Infants with this disorder are also at increased risk of cerebral palsy and neonatal death. This study sought to relate umbilical artery Blood Gas Parameters to mortality in 47 infants at 32 or more weeks gestation who were admitted with early-onset seizures secondary to hypoxic-ischemic encephalopathy. Fourteen of 47 newborn infants admitted to the study died of complications related to hypoxic-ischemic encephalopathy. Maternal demographic factors were comparable regardless of whether the infant died or survived. Active resuscitation was attempted in all instances. There were no significant differences between infants who died and those who survived with respect to umbilical artery Blood values of pH, base deficit, PCO 2 , or oxygen saturation. Levels of PO 2 were significantly higher in neonates who died than in survivors (18.4 vs. 12.3). Neither umbilical artery Blood pH nor base deficit predicted neonatal deaths in the present study of infants having hypoxic-ischemic encephalopathy and early-onset seizures. A high PO 2 in newborn infants who subsequently die may reflect an impaired inability to extract oxygen from the Blood. The question of whether patterns of change in PCO 2 predict the development of neonatal encephalopathy awaits further investigation.

  • Umbilical artery Blood Gas Parameters in neonates with early onset seizures who die.
    BJOG : an international journal of obstetrics and gynaecology, 2004
    Co-Authors: Keith Williams, Avash Singh
    Abstract:

    Objective  To relate umbilical artery Blood Gas Parameters to mortality among neonates with hypoxic–ischaemic encephalopathy related to early onset seizures. Design  Population cohort study. Setting  British Columbia Women's Hospital. Population  Forty-seven infants at ≥32 weeks of gestation admitted to NICU with early onset seizures secondary to hypoxic–ischaemic encephalopathy with umbilical artery Blood Gases done at delivery. Methods  Patients were divided into two groups: (1) Infants with neonatal seizures who survived, and (2) infants with neonatal seizures who died related to hypoxic–ischaemic encephalopathy complications. Comparison of umbilical artery pH, PO2, PCO2, base deficit was done between the two groups with Student's t tests. Main outcome measures  Umbilical artery pH, PO2, PCO2 and base deficit. Results  The PO2 was significantly higher in the group that expired (18.36 ± 9.15 vs 12.33 ± 7.51). There were no significant differences in any other Blood Gas Parameters between the groups. Conclusion  Neither the umbilical artery pH nor base deficit is predictive of neonatal death in infants with hypoxic–ischaemic encephalopathy with seizures. The finding of a high PO2 in neonates who died may indicate an inability of those infants to efficiently extract oxygen from Blood.