Is time of birth a predictor of adverse perinatal outcome? A hospital-based cross-sectional study in a low-resource setting, Tanzania

Office hours and caesarean section: systematic review and Meta-analysis

BACKGROUND

Unnecessary caesarean births may be affected by physician factors, such as preferences, incentives and convenience. Delivery during office hours can be a valuable proxy for measuring such effects.

OBJECTIVE

To determine the effect of office hours on the decision for caesarean delivery by assessing the odds of caesarean during office hours compared to out-of-office hours.

SEARCH STRATEGY

We searched CINAHL, ClinicalTrials.gov , The Cochrane Library, PubMed, Scopus and Web of Science from the beginning of records through August 2021.

DATA COLLECTION AND ANALYSIS

Search results were screened by three researchers. First, we selected studies that reported odds ratios of caesareans, or data allowing their calculation, for office and out-of-office hours. We extracted data on the study population, study design, data sources, setting, type of caesarean section, statistical analysis, and outcome measures. For groups reporting the same outcome, we performed a standard inverse-variance random-effects meta-analysis, which enabled us to calculate the overall odds ratios for each group. For groups reporting varying outcomes, we performed descriptive analysis.

MAIN RESULTS

Meta-analysis of weekday vs weekend for any caesarean section showed higher odds of caesarean during weekdays in adjusted analysis 1.40 (95%CI 1.13, 1.72 from 1,952,691 births). A similar effect was observed in the weekday vs Sunday comparison (1.39, 95%CI 1.10, 1.75, 150,932 births). A lower effect was observed for emergency CS, with a slight increase in adjusted analysis (1.06, 95%CI 0.90, 1.26, 2,622,772 births) and a slightly higher increase in unadjusted analysis (1.15, 95%CI 1.03, 1.29, 12,591,485 births). Similar trends were observed in subgroup analyses and descriptive synthesis of studies examining other office hours outcomes.

CONCLUSIONS

Delivery during office hours is associated with higher odds for overall caesarean sections and little to no effect for emergency caesarean. Non-clinical factors associated with office hours may influence the decision to deliver by caesarean section. Further detailed investigation of the "office hours effect" in delivery care is necessary and could lead to improvements in care systems.

FUNDING

The authors received no direct funding for this study.

Time at birth and short-term outcomes among extremely preterm infants in Spain: a multicenter cohort study

The first hours after birth entail a window of opportunity to decrease morbidity and mortality among extremely preterm infants. The availability of staff and its tiredness vary depending on the timing and day of the week. We hypothesized that these circumstances may impact neonatal outcomes. We have conducted a multicenter cohort study with data obtained from the Spanish neonatal network database SEN1500, where staff doctors are in the house 24/7. The main study exposure was the time of birth; secondary exposures were cumulative work hours from the medical and nurses' shifts and day of the week. The primary outcome was survival to hospital discharge. Secondary outcomes included common preterm infants' in-hospital complications. Univariate and multivariate analysis adjusting for potential confounders was performed. All extremely preterm infants (N = 8798) born between 2011 and 2019 were eligible; 35.7% of them were admitted during the night shift. No differences were found between day and night births regarding survival or morbidity. No differences were found between weekdays and weekends or when considering cumulative worked hours in the shifts. Infants born during the night shift were more likely to be intubated at birth (OR 1.20, CI95% 1.06-1.37), receive surfactant (OR 1.24, CI95% 1.08-1.44), and having anemia requiring transfusion (OR 1.23, CI 95% 1.08-1.42).

CONCLUSION

the time of birth did not seem to affect mortality and morbidity of extremely preterm infants.

WHAT IS KNOWN

• The first hours after birth in extremely preterm infants are a very valuable opportunity to decrease mortality and morbidity. • Time and day of birth have long been linked to outcomes in preterm infants, with night shifts and weekends classically having higher rates of mortality and morbidity.

WHAT IS NEW

• In this study, no differences were found between day and night births regarding survival or major morbidity. • Infants born during the night shift were more likely to be intubated at birth, receive surfactant and having anemia requiring transfusion.

Reducing Decision to Incision Time Interval for Emergency Cesarean Sections: 24 Months' Experience from Rural Sierra Leone

Background: This study aimed at describing the changes in the completeness of documentation and changes in decision to incision time interval of emergency cesarean sections after an audit and feedback project a rural hospital in Sierra Leone. Methods: We documented and monitored the decision and incision times for emergency cesarean sections over the course of two years. Year one focused on the introduction of the project and year two focused on the continuous monitoring of the project. We compared the completeness of decision to incision data and used the 30-min benchmark as target for the decision to incision time interval. Results: A total of 762 emergency cesarean sections were included. While the completion of decision time data (72%) did not change between the two reporting periods, documentation of incision time increased from 95% to 98% (p < 0.001). Complete documentation for both decision and incision time was available for 540 (70.9%) emergency cesarean sections. The decision to incision time interval decreased from 105 min to 42 min (p < 0.001). The proportion of cesarean sections started within 30 min increased from 8.5% to 37% (p < 0.001). Conclusion: Although not all cesarean sections were performed within the 30-min threshold, the decision to incision interval decreased significantly. Improvements in documentation and routine reporting of the decision to incision time interval is recommended.

[Association between time of birth and resuscitation outcomes in extremely preterm infants]

OBJECTIVE

To study whether there are differences in the resuscitation process and early outcomes between the extremely preterm infants delivered on off-hours (6 pm to 8 am of working days, weekends, and national holidays) and those delivered on working hours.

METHODS

A retrospective analysis was performed on the medical data of extremely preterm infants who were born in the Peking University Third Hospital from January 1, 2010 to December 31, 2020 and transferred to the neonatal intensive care unit (NICU). According to the time of birth, they were divided into two groups:working hours (n=77) and off-hours (n=98). The resuscitation process and early outcomes were compared between the two groups.

RESULTS

Compared with the working hours group, the off-hours group had a significantly lower proportion of infants with the use of full-dose dexamethasone before delivery (P < 0.05) and a significantly higher proportion of infants with a 1-minute Apgar score of < 7, positive pressure ventilation, or tracheal intubation (P < 0.05). The incidence rates of neonatal respiratory distress syndrome and intrauterine pneumonia in the off-hours group were significantly higher than those in the working hours group (P < 0.05).

CONCLUSIONS

Extremely preterm infants delivered on off-hours tend to have a low Apgar score at 1 minute after birth, with a higher proportion of infants requiring positive pressure ventilation or tracheal intubation during resuscitation than those delivered on working hours, and they tend to develop neonatal respiratory distress syndrome and intrauterine pneumonia. This suggests that it is important to make adequate preparations in terms of personnel and supplies for resuscitation of extremely preterm infants after birth and that NICUs should develop a detailed management plan for extremely preterm infants at each period of time before, during, and after birth.

Influence of evening/night-time birth on maternal/perinatal outcomes in a low-risk population

Objective:

To compare maternal and perinatal outcomes between day-time and evening/night-time births in a low-risk population.

Material and Methods:

The present study had a retrospective and cross-sectional design. The study recruited 421 pregnant women admitted for spontaneous or induced labor, with singleton, full-term pregnancy, without comorbidities, and with birthweight between 2,500 and 4,499 g. Maternal data, including severe bleeding, need for blood transfusion, puerperal infection, and admission to the intensive care unit, and neonatal data including birthweight, Apgar scores at first and fifth minute, oxygen administration, resuscitation, admission to the neonatal care unit, infection, and blood transfusion, were evaluated. Univariate and multivariate analysis and calculation of the prevalence ratio (PR) were performed with a 95% confidence interval (CI).

Results:

There were no differences in factors of maternal morbidity between delivery times. Newborns delivered during the evening/night-time had a higher prevalence of infection (15.3% vs 7.9%, p=0.019, PR: 2.11, CI 95% 1.13-3.93) and hospitalization in the neonatal care unit (25.8% vs 10.4%, p<0.001, PR: 2.99, CI 95% 1.76-5.10). There was no difference in other perinatal morbidities examined.

Conclusion:

Evening/night-time births were associated with a higher prevalence of infection and the need for admission to an intensive care unit.

Association between time of delivery and poor perinatal outcomes -An evaluation of deliveries in a tertiary hospital, South-east Nigeria

OBJECTIVES

Nigeria account for a significant proportion of adverse perinatal outcome. Nigerian studies assessing impact of time of delivery on perinatal outcome are scarce. This study evaluates any associations between time of delivery and perinatal outcome.

METHODS

This was a cross-sectional study at the Federal Teaching Hospital, Abakaliki from 01 January 2016 to 30 June 2018. Data were analysed with IBM SPSS version 25.0.

RESULTS

A total of 4,556 deliveries were analysed. Majority (72.2%) delivered on week days and 27.8% on weekends. Over 90% had 1st and 5th minutes Apgar scores ≥7. There was statistical difference in NICU admission between morning and evening hours (p = 0.009) but not between morning and night hours (p = 0.795). ENND during evening was twice higher (1.2%) than morning (0.5%); p = 0.047 and night hours (0.6%); p = 0.623.There was no difference in the risk of fresh stillbirths between morning and evening (p = 0.560), as well as morning and night hours (p = 0.75), there was also no difference in fresh stillbirths between week days and weekends (p = 0.895). There was no difference in low Apgar scores at 1st minute between morning and evening (p = 0.053) and night (p = 0.221), and between weekdays and weekends (p = 0.524). Similarly, there was no difference in low 5th minute Apgar scores between morning and evening (p = 0.165) and night (p = 0.944), as well as between week days and weekends (p = 0.529). However, ENND was twice (p = 0.085) and 1.3 times higher (p = 0.526) for evening and night hours respectively, while there was no difference between weekends and week days (p = 0.652).

CONCLUSION

NICU admission and ENND were commoner during evening hours. However, work hours did not affect the rate of stillbirth and low Apgar scores during weekdays and weekends. It is pertinent for each obstetric unit to identify and modify factors responsible for unfavourable outcomes during various shifts, with the aim of improving perinatal health.