Maternal and neonatal outcomes associated with multiple repeat cesarean deliveries: A registry-based study from Qatar

BACKGROUND

Cesarean delivery (CD) is associated with increased maternal and neonatal morbidity compared to vaginal delivery, particularly in cases classified as emergency procedures or when there are multiple CDs. This retrospective cohort study aims to examine the incidence of maternal and neonatal complications in women with multiple CDs.

METHODS

This study used data from a national perinatal database obtained from a single tertiary maternity care hospital. Women who delivered a singleton live birth after 24 weeks of gestation by CD were stratified into five groups based on the number of CDs, with the last group having five or more CDs. The women were divided into those with five or more CDs (Group 5) versus those with fewer than five (Groups 1 to 4). The maternal outcomes included intra-operative surgical complications, blood loss, and intensive care unit (ICU) admission. The neonatal outcomes included preterm birth, neonatal ICU (NICU) admission, respiratory distress syndrome (RDS), and perinatal death.

RESULTS

Of the 6,316 women in the study, 2,608 (41.3%) had a primary CD. 30.3%, 17.5%, and 7.3% of the cohort had their second, third, and fourth CDs, respectively. Women undergoing the 5th CD and above formed the remaining 3.5% (227). Women in Group 5 had the highest risk of suffering a surgical complication (3.1%, p = 0.015) and postpartum hemorrhage (7.5%, p = 0.010). 24% of babies in Group 5 were born preterm (p < 0.001). They also had a 3.5 times higher risk of having a surgical complication (RR = 3.5, 95% CI 1.6-7.6, p = 0.002), a 1.8 times higher risk of developing postpartum hemorrhage (RR = 1.8, 95% CI 1.1-2.9, p = 0.014), a 1.7 times higher risk of delivering between 32-37 weeks of gestation (RR = 1.7, 95% CI 1.3-2.2, p < 0.001), a higher risk of the baby getting admitted to NICU (RR = 1.3, 95% CI 1.0-1.6, p = 0.038), and developing RDS (RR = 1.5, 95% CI 1.2-2.0, p = 0.002) compared to Groups 1-4. The risks of neonatal outcomes such as NICU admission (RR 2.9, 95% CI 2.1-4.0) and RDS (RR 3.5, 95% CI 2.3-5.5) were much higher in elective CDs performed at term compared to preterm births (p < 0.001 for both).

CONCLUSION

Maternal morbidity significantly increases with the increasing number of CD. The increased risk of RDS and NICU admissions in the neonate with multiple CDs reflects lower gestational age and birthweight in these groups-consideration of preoperative steroids for lung maturation in these women to reduce neonatal morbidity warrants further discussion.

Risk for and temporal trends in cesarean surgical complications

OBJECTIVE

It is possible that in the setting of increasing patient comorbidity and obesity, risk for surgical injury and need for reoperation is increasing. It is also possible that with differential uptake of evidence-based recommendations and increasing prevalence of risk factors such as obesity, risk for surgical site complications is increasing. The objective of this study was to evaluate trends in, risk factors for, and racial disparities related to cesarean complications.

METHODS

This repeated cross-sectional study evaluated cesarean deliveries in the 2002-2014 National Inpatient Sample for women age 15-54. The primary outcome was a cesarean surgical complication composite including (i) surgical injuries, (ii) reoperation, and (iii) surgical site complications. Surgical injuries, reoperation, and surgical site complications were additionally evaluated individually as outcomes. Univariable and multivariable log linear regression models including demographic, clinical, and hospital factors were performed to assess risk for outcomes with unadjusted and adjusted risk ratios (aRR) with 95% confidence intervals (CI) as measures of association. Temporal trends were estimated using average annual percentage change from a joinpoint regression model. A stratified analysis was performed restricted to non-Hispanic black women. Data was weighted to provide national estimates.

RESULTS

A total of 16.2 million estimated cesarean deliveries (3.2 million unweighted cesarean deliveries) from 2002 to 2014 were included in this analysis. The prevalence of the cesarean surgical complication composite was 1.14%, surgical site complications occurred in 0.60%, surgical injuries in 0.49%, and reoperations in 0.10%. Comparing the end of the study (2012-2014) to the beginning of the study (2002-2003), adjusted risk for the composite was similar (aRR 0.93, 95% CI 0.92, 0.95). In comparison, surgical site complication risk was lower at the end of the study (aRR 0.77, 95% CI 0.75, 0.79) while risks for surgical injury (aRR 1.18, 95% CI 1.15, 1.22) and reoperation (1.18, 95% CI 1.10, 1.26) were higher. Non-Hispanic black women were at increased risk for surgical site complications (aRR 1.83, 95% CI 1.80, 1.87) and reoperation (aRR 1.44, 95% CI 1.37, 1.51), but not surgical injury (aRR 0.99, 95% CI 0.97, 1.02). In analyses stratified for non-Hispanic black women, there was a reduction in risk for surgical site complications at the end of the study period compared to the beginning similar to the primary analysis (aRR 0.76, 95% 0.72, 0.81) with a modest decrease in overall risk for the composite outcome (aRR 0.85, 95% CI 0.81, 0.89).

CONCLUSION

A decrease in risk for surgical site complications was offset by slightly increased risk for surgical injury and reoperation in adjusted analyses. Among non-Hispanic black women, surgical site complication risk decreased proportionately with this group still at significantly higher overall risk.