CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

Access to emergency obstetric care (EmOC) within critical timeframes is a fundamental determinant of maternal survival. The global obstetric literature consistently identifies three major categories of delay contributing to preventable maternal mortality: delays in deciding to seek care, delays in reaching a healthcare facility, and delays in receiving care upon arrival collectively described as the Three Delays Model (Thaddeus & Maine, 1994). Of these, the second delay the physical journey to a facility is disproportionately affected by transportation challenges, particularly in densely urbanized settings where road traffic congestion constitutes a chronic and worsening crisis.

Lagos, Nigeria's largest city and commercial nerve centre, presents one of the most extreme cases of urban traffic congestion on the African continent. With an estimated population exceeding 15 million, an inadequate road network relative to the number of registered vehicles (over 2 million), and a near-complete dependence on road transport for mobility, Lagos routinely records traffic delays that extend journey times to several multiples of the theoretical minimum (World Bank, 2023; Olawole & Aloba, 2022). For a pregnant woman experiencing obstetric emergencies including antepartum haemorrhage, eclampsia, or obstructed labour every additional minute of transit significantly increases the risk of death or permanent disability. Emergency obstetric services require arrival within the 'golden hour', a clinical standard that Lagos traffic conditions routinely compromise.

Lagos University Teaching Hospital (LUTH), located in Surulere, serves as the primary referral centre for obstetric emergencies across Lagos Island, Mainland, and beyond. Its geographic position within the congested metropolis means that patients and ambulances travelling to LUTH routinely encounter peak-hour gridlock on major arterials including Funsho Williams Avenue, Western Avenue, and the Lagos-Abeokuta Expressway. Findings from Nigerian studies indicate that transportation delays to tertiary maternity facilities contribute to 20–40% of facility-based maternal deaths, a proportion that may be significantly higher in Lagos given its notorious traffic situation (Iyoke et al., 2021; Alkali & Ikeoluwapo, 2023).

The consequences of delayed arrival at EmOC facilities include increased rates of intrapartum stillbirth, postpartum haemorrhage mortality, eclamptic complications, and maternal death. From an emergency systems perspective, even the response times of LUTH's ambulance services are substantially lengthened by traffic congestion, reducing the practical efficacy of pre-hospital obstetric emergency response. Understanding the specific mechanisms through which Lagos traffic congestion impairs EmOC access is essential for designing interventions ranging from dedicated emergency transport lanes to decentralized obstetric emergency units that can reduce the second delay within this megacity context.

This study investigates the effect of traffic congestion on access to emergency obstetric services at LUTH, examining journey times, delay patterns, clinical outcomes, and stakeholder perspectives to generate comprehensive evidence for policy action.

1.2 Statement of the Problem

Despite the recognized importance of timely emergency obstetric care, systematic investigation of how Lagos traffic congestion specifically affects access to LUTH's EmOC services remains insufficient. Clinicians at LUTH have documented cases where patients arrived in extremis haemorrhaging, seizing, or in prolonged obstructed labour having spent one to three hours in transit from relatively proximate locations, with congestion identified as the principal cause of delay. However, these observations have not been systematically quantified, and the dose-response relationship between transit time, congestion severity, and obstetric outcomes at LUTH has not been empirically established.

The absence of evidence-based data on this issue constrains the ability of health authorities, Lagos State government transportation agencies, and hospital management to implement targeted interventions. This study addresses this gap by systematically documenting the relationship between traffic congestion and EmOC access at LUTH, providing the evidentiary foundation for multi-sectoral action.

1.3 Objectives of the Study

The broad objective is to assess the effect of traffic congestion on access to emergency obstetric services at Lagos University Teaching Hospital, Lagos State.

Specific objectives include:

i. To determine the average transit times experienced by patients accessing emergency obstetric services at LUTH.

ii. To assess the frequency and severity of traffic-related delays reported by patients and ambulance personnel en route to LUTH.

iii. To examine the relationship between transit time and clinical outcomes of emergency obstetric cases at LUTH.

iv. To identify the specific traffic corridors and time periods most associated with severe delays in reaching LUTH's EmOC services.

v. To explore interventions proposed by stakeholders to mitigate the impact of traffic congestion on EmOC access.

1.4 Research Questions

i. What are the average transit times for patients accessing emergency obstetric services at LUTH?

ii. How frequently and severely do patients and ambulance personnel experience traffic-related delays en route to LUTH?

iii. What is the relationship between transit time and clinical outcomes of emergency obstetric cases managed at LUTH?

iv. Which traffic corridors and periods are most associated with delays in accessing LUTH's EmOC services?

v. What interventions do stakeholders propose to reduce the impact of traffic congestion on EmOC access at LUTH?

1.5 Research Hypotheses

H01: There is no significant association between traffic-related transit time and maternal clinical outcomes among emergency obstetric cases at LUTH.

H02: Traffic congestion does not significantly differ across identified transit corridors to LUTH during peak versus off-peak periods.

H03: There is no significant relationship between distance from LUTH and transit time for emergency obstetric cases, when controlling for time of day.

1.6 Significance of the Study

The findings of this study carry profound practical and policy significance. For Lagos State and Federal health authorities, the study provides empirical justification for prioritizing designated emergency vehicle corridors, investing in air or waterway emergency medical transport as traffic alternatives, and decentralizing EmOC capacity to facilities closer to high-risk populations. For LUTH management and clinicians, the study will highlight the most severe traffic-affected corridors and time windows, enabling more proactive triage protocols and pre-arrival stabilization communication with patients in transit.

From a public health perspective, reducing transit delays for obstetric emergencies is one of the most direct interventions available to reduce the maternal mortality ratio in Lagos. The study's findings can also catalyze inter-ministerial collaboration between the Ministry of Health and the Ministry of Transportation a partnership essential for addressing a problem that sits at the intersection of urban governance and healthcare delivery.

Academically, the study contributes to the global literature on the Three Delays Model, adding a rich empirical case study from sub-Saharan Africa's largest megacity, and advancing understanding of how urban environmental factors interact with health system capacity to determine maternal outcomes.

1.7 Scope and Limitations of the Study

The study is conducted at LUTH, Surulere, Lagos, focusing on emergency obstetric cases presenting to the hospital's emergency unit over a defined study period. It encompasses patient-reported transit data, ambulance response records, and clinical outcome data. The study does not assess non-obstetric emergencies or primary ANC utilization patterns.

Limitations include the challenge of objectively measuring real-time traffic conditions during patient transit, which will be addressed through structured recall questionnaires and GPS data analysis where available. Retrospective clinical record review may be subject to incomplete documentation. The single-facility design limits the generalizability of transit time findings to other hospitals in Lagos, though the corridor-level data will have broader applicability.

1.8 Definition of Terms

Emergency Obstetric Care (EmOC)

Emergency obstetric care refers to the clinical services and interventions including management of haemorrhage, eclampsia, sepsis, obstructed labour, and unsafe abortion complications required to manage life-threatening obstetric emergencies and prevent maternal and perinatal mortality (WHO, 2023).

Traffic Congestion

Traffic congestion refers to conditions on road networks that result in slower speeds, longer trip times, and increased vehicular queuing, typically caused by excessive demand relative to road capacity during peak usage periods (World Bank, 2023).

Transit Time

In this study, transit time refers to the total elapsed time from the point at which a patient or her family decides to travel to LUTH for emergency obstetric care to the time of arrival at the hospital's emergency department (Iyoke et al., 2021).

The Three Delays Model

The Three Delays Model is a conceptual framework identifying three sequential delays that contribute to maternal mortality: the delay in deciding to seek care, the delay in reaching an adequate care facility, and the delay in receiving appropriate care once at the facility (Thaddeus & Maine, 1994).

Golden Hour

The golden hour is a clinical concept referring to the first hour following a life-threatening event, during which emergency medical intervention has the highest likelihood of preventing death or irreversible morbidity, widely applied to obstetric haemorrhage and trauma management (Alkali & Ikeoluwapo, 2023).

Pre-hospital Care

Pre-hospital care encompasses all medical assessment and treatment provided to a patient before arrival at a hospital, including first aid, ambulance interventions, and stabilization during transport to a healthcare facility (Olawole & Aloba, 2022).

Maternal Mortality

Maternal mortality refers to the death of a woman while pregnant or within 42 days of the termination of pregnancy, from any cause related to or aggravated by the pregnancy or its management, but not from accidental or incidental causes (WHO, 2023).

Referral System

A referral system is the structured process by which patients are transferred from one level of healthcare to another typically from lower to higher levels to access services not available at the originating facility, particularly for complex or emergency conditions (FMoH, 2022).

References

Alkali, Y. S., & Ikeoluwapo, O. A. (2023). Maternal mortality audit findings and associated factors at a tertiary hospital in Northwestern Nigeria. Nigerian Medical Journal, 64(1), 15–24.

Federal Ministry of Health (FMoH). (2022). Integrated Maternal, Newborn and Child Health strategy 2022–2030. Abuja: FMoH.

Iyoke, C. A., Ugwu, G. O., Okafor, I. I., Ezugwu, E. C., Lawani, L. O., & Ajah, L. O. (2021). Prevalence, causes and outcome of obstetric referral at a tertiary medical centre in South-East Nigeria. Global Journal of Medicine and Public Health, 4(3), 1–9.

Olawole, M. O., & Aloba, O. (2022). Characteristics and causal factors of road traffic crashes in Lagos State, Nigeria, 2000–2013. IATSS Research, 46(1), 50–58. https://doi.org/10.1016/j.iatssr.2021.07.002

Thaddeus, S., & Maine, D. (1994). Too far to walk: Maternal mortality in context. Social Science & Medicine, 38(8), 1091–1110. https://doi.org/10.1016/0277-9536(94)90226-7

World Bank. (2023). Urban transport in Lagos: Addressing the mobility crisis. Washington, D.C.: World Bank Group.

World Health Organization (WHO). (2023). Trends in maternal mortality: 2000 to 2020. Geneva: WHO.

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