The role of delays in severe maternal morbidity and mortality: expanding the conceptual framework.
Keywords: maternal mortality and morbidity, three delays model, near-miss event, emergency obstetric care
Depuis la moitie des annees 80, la mortalite maternelle a pris de rimportance dans les recherches et les politiques. Thaddeus et Maine ont rapidement compris qu'un traitement ponctuel et adapte des complications obstetricales etait un facteur majeur de reduction des deces maternels. Ils ont propose une nouvelle approche pour examiner la mortalite maternelle, avec un cadre en trois phases pour comprendre les lacunes dans l'acces a une gestion appropriee des urgences obstetricales : phase I retard dans la decision de demander des soins de la part de la femme et/ou de sa famille ; phase II retard dans l'arrivee au centre de sante approprie ; et phase III--retard dans l'administration de soins dans ce centre. Recemment, des efforts ont ete deployes pour renforcer la capacite des systemes de sante a identifier plus rapidement les complications qui resultent en deces maternels. Cet article montre que l'association du cadre des << trois retards >> et de la methode dite des catastrophes obstetricales evitees de justesse (<< near-miss >>), avec l'utilisation d'un eventail de formules de recueil des informations, peut donner des moyens supplementaires de deceler un evenement critique autour de l'accouchement. Cette approche peut constituer un outil puissant permettant aux decideurs et aux administrateurs de la sante de garantir les principes des droits de l'homme dans le contexte des soins de sante maternels, en mettant en lumiere les faiblesses des systemes et des services obstetricaux.
Desde mediados de la decada de los ochenta, la mortalidad materna ha ido adquiriendo importancia en las areas de investigacion y politicas. Thaddeus y Maine reconocieron temprano que el tratamiento oportuno y adecuado de las complicaciones obstetricas es un factor importante para disminuir las tasas de muertes maternas. Su trabajo ofrecio un nuevo enfoque para examinar la mortalidad materna, utilizando un marco de tres fases para entender las brechas en el acceso al manejo adecuado de emergencias obstetricas: fase I--demora por parte de la mujer y/o su familia en decidirse a buscar atencion medica; fase II--demora en llegar a una unidad de salud adecuada; y fase III--demora en recibir atencion adecuada en esa unidad. Recientemente, se han realizado esfuerzos por fortalecer la capacidad de los sistemas de salud para identificar mas rapido las complicaciones que causan muertes maternas. En este articulo se muestra que la combinacion del marco de las "tres demoras" con el enfoque del analisis de los "casi errores" y el uso de una variedad de metodos para la recopilacion de informacion, puede ser otro medio de reconocer un evento critico en torno al parto. Este enfoque puede ser una herramienta eficaz para formuladores de politicas y gerentes de salud para garantizar los principios de los derechos humanos en el contexto de los servicios de salud materna, destacando las debilidades de los sistemas y los servicios obstetricos.
In the mid-1980s, Rosenfield and Maine (1) argued that maternal mortality required attention in research and policy. They identified that, as one of the major avoidable cause of deaths for women of reproductive age, maternal mortality had received little attention from health professionals, policymakers or politicians. Subsequently, an advocacy movement for the reduction of maternal mortality led to the World Health Organization (WHO) Safe Motherhood Initiative, launched in Nairobi in 1987. (2)
This initiative was an effort to draw the world's attention to women's well-being and to deaths occurring around pregnancy and the end of pregnancy. Over the last 25 years, women's health has improved in many countries but global statistics show that the major causes of the vast majority of maternal deaths in developing countries remain the same as 100 years ago, due to direct obstetric causes--haemorrhage, sepsis, complications of abortion, hypertensive disorders, obstructed labour, ruptured uterus and ectopic pregnancy.
Maternal mortality is extremely sensitive to standards of obstetric care. (2,3) Reviewing studies on maternal deaths and health service utilization, Thaddeus and Maine (4) observed that many pregnant women reach health facilities in such a poor condition that they cannot be saved, and that the time taken to receive adequate care is the key factor in their deaths. From this, the "three delays model" was developed.
Current differences in the maternal mortality ratios (MMR) of high- and low-income countries are usually due to the differences in time management of obstetric complications. Reducing maternal deaths needs not only the improvement of medical assistance for obstetric emergencies in facilities, (5,6) but also a reduction in the interval between the onset of a complication and its management in all settings. However, given the relatively low number of maternal deaths in any one geographical area, methodological difficulties have arisen in adopting this approach. This situation has improved since maternal "near-misses" were identified and studied. (7,8)
This article presents a review and a conceptual discussion of the "three delays" framework based on recent methodological approaches to maternal morbidity and mortality. We did a comprehensive review of the literature on delays in obstetric care from 1980 to 2011 using the keywords: "three delays", time factors, obstetrics, obstetrical care, patient acceptance of health care, health services accessibility, delivery of health care, quality of health care, maternal mortality, maternal morbidity, pregnancy outcome and related terms on Pubmed, ISI, SciELO, EMBASE, Google Scholar and WHOLIS library. We did not exclude any type of article or language.
The conceptual framework
In 1990, Thaddeus and Maine (4) brought about the first shift in the approach to maternal mortality by emphasizing an apparent paradox in public health investments: there is no well-known primary prevention for most obstetric complications leading to death, nor is primary health care able to reduce maternal mortality. They suggested that time--from the onset of a complication to its outcome--must be the single measure used to manage maternal complications.
Studies under the Safe Motherhood Initiative (2) found that there was no association between obstetric complications and any demographic characteristic, behavioural risk factor or antenatal complication. (9) Other studies found that no amount of screening could detect women likely to need emergency obstetric care (10) nor that improving living conditions reduced maternal mortality. (3) Action to reduce maternal mortality had therefore to be designated as secondary prevention. (11)
While many women who develop complications have one or more detectable risk factors, the majority of women who share these risk factors do not have serious problems. Moreover, in absolute numbers, complications during pregnancy and labour may occur even in the best conditions. A large proportion of serious complications occur among women with no recognizable risk factors at all. (1,12)
The average interval from onset of a major obstetric complication to death ranges from 2-5.7 hours for post-partum haemorrhage to 3.4-6 days for sepsis. (2,13) Thus, the quicker a problem is identified and treated, the greater the chances of stopping the condition from progressing.
Thaddeus and Maine used the concept of "delays" between the onset of a complication and its adequate treatment and outcome to link factors as diverse as distance, women's autonomy and medical assistance. This provides a clear framework for the study of maternal deaths beyond the medical causes by combining in a single framework the social and behavioural causal sequences related to the household, community, and health system, transcending clinical or demographic information. (14)
The delays are sequential and inter-related: phase I--delay in deciding to seek care by the woman and/or her family; phase II--delay in reaching an adequate health care facility; and phase III--delay in receiving adequate care at that facility. Most maternal deaths cannot be attributed to a single delay; more commonly, a combination of factors lead ultimately to the woman's death.
This delay is usually caused by constraints on uptake of health care services, including
"harriers in the socio-cultural milieu that shape values, beliefs and attitudes; in the socioeconomic conditions that shape access to money and information; in the geographical setting that shapes physical accessibility; in the financial environment that determines the cost of services; and in the institutional context that shapes the scope and organization of medical services and the quality of care". (4)
Delay in seeking care accounts for the greater proportion of women reaching facilities in poor clinical condition. (15-18 This may be the most complex event to resolve in the obstetric care chain because it involves the concept of access and the phenomenon of behaviour. (19) The barriers most related to health care-seeking behaviour are economic status, (18) distance to facility, (20) educational level, (21) women's autonomy, (21,22) recognition of disease, (17,23) aetiology, (20) severity of symptoms (15,19,22) and knowledge and attitudes about use of the health system. (18,24,25) Given that decision-making is a complex behaviour related to perception of needs, which is dependent on the interaction between individual traits, characteristics and the exposure to social, cultural, and economic conditions, gathering information requires a broad approach. (19,26) For instance, the use of antenatal care seems to enhance the utilization of emergency obstetric care, the same way that lack of antenatal access is associated with delays leading to poor maternal outcomes. (27)
Given the complexity of health needs, Rodriguez Villamizar and colleagues (28) added an additional delay for doing maternal mortality surveillance. They made the first delay the recognition of a problem, followed by the opportunity decision to seek care and take action. In Afghanistan, Hirose et al proposed a different sub-division of the phase I delay as the time it takes to decide to seek care and the time it takes to departure for care, which is faster when women have adequate access to care and a supportive social network. (20) Therefore, phase I may in fact have three different components: delays in recognition, decision and departure, which reflect the complexity of the problem.
The obstacles in reaching a facility may act as a disincentive to seeking care. Even when a woman decides to seek care at an appropriate time, she may face barriers such as lack of transport or long distance to a facility. (23)
Phase II delay is usually a matter of lack of accessibility to health services. Financial, organizational and sociocultural barriers control the utilization of services. (29) Access will be influenced by distribution of health facilities, distance, transport and costs. Women with negative maternal health outcomes travel greater distances, pass through a greater number of facilities and reach an adequate facility later. (13)
Living in a village or in remote places with no transport available is associated with phase II delays. (13,25) Even in developed countries with no transport problems, geographical distance is associated with more frequent negative pregnancy outcomes. (30)
However, some authors argue that there is no "urban advantage" as, despite the proximity to services, the urban poor do not have better access to health services than the rural poor. (31) Cost and poverty may still play a central role in reaching a facility. (15) Many women, due to lack of autonomy or to economic disadvantage, have difficulty funding transport when deciding to seek care. (21,25,32)
Even when they have money for transport there may be no means of transport available (21) or they have to seek assistance on unsafe roads at night. (25) Means of transport used include walking, taking taxis or market trucks, or being carried in a wheelbarrow or hammock on poles. (21,25)
Reaching an appropriate facility may take from 10 minutes to a full day, (25) but usually takes more than one hour. (17) Das found that women who reach hospital within four hours of the decision to seek care have a greater chance of a positive outcome than those arriving within eight hours. (21)
The location of referral also influences the time taken to reach a facility. Women who were referred from home took longer to reach a facility than those referred from a delivery centre. (17) The majority of women having hospital-based delivery, especially in African countries, are not referred by a health professional but are self-referrals. (25,33) In part, this reflects their lack of confidence in lower level care and results in congestion of hospitals. (33) However, even when referred from another facility, either a rural clinic or facility without emergency obstetric care capacity, women arrive in severe clinical condition. (25) Reasons for this include structural and process deficiencies--delayed referral, the high cost of emergency obstetric care or lack of public transport. (34)
The flaws in the referral system lead to patients being shunted from one facility to another, (13,33) when facilities are unable to deal with obstetric complications (35) or they lack trained health professionals. The number of referrals onwards before a woman reaches an appropriate facility influences survival. Therefore, referral guidelines and protocols for the referring and the receiving facility need to be followed, to reduce the disparity between the theoretical hierarchical "referral pyramid" and actual practice. (33)
While there may be further factors in delays in reaching a facility, such as lack of a supportive social network, (13,16,20,22,32) fundamentally it seems that the real problem in accessing health services is inequity. (31)
The cumulative effect of phase I and II delays contributes to the number of women reaching facilities in a serious condition. (55,34,36) Many will never reach a hospital, (22,33) and even when they do, treatment may not be successful. (1)
Other studies have documented additional reasons for inadequate treatment. These include chronic shortages of trained staff and essential supplies, (1) the interval between the decision to do emergency surgery and the time of starting the surgery exceeding 30 minutes; (37) delays in initiating any adequate treatment following arrival at the facility; (35) and shortages of blood products, lack of technical competence among staff and poor attitudes towards patients, caused by shortage of funds. (16,18,24,32)
Some facilities for comprehensive emergency obstetric care have huge caseloads of women with severe conditions but frequently no clear policies on what adequate treatment for life-threatening conditions should consist of. (37) In low-income countries the poor quality of care found even in tertiary facilities (38) contributes to maternal mortality both directly (due to sub-optimal standards of emergency care) and indirectly (deterring health service utilization). (39) The poor quality of services in turn influences women's decision-making and mitigates against timely care. (17)
Recent utilization of the three-delays framework and the near-miss approach
The three-delays model first appeared in a booklet and a newsletter, and was then published in Social Science & Medicine in 1994. (4,12) It has often been used to study the leading causes of maternal mortality from the onset of a complication. A brief analysis of citations of the model indexed in the ISI Web of Science shows an increasing use of this conceptual framework, especially since 2004-2005. A similar increase in the number of publications citing this paper and addressing severe maternal morbidity and maternal near-miss issues has been observed in the same period, indicating concurrent use of both concepts for understanding adverse maternal outcomes.
This increasing interest may in part be a result of another shift in approach to maternal mortality, that is, studies in women who have survived severe complications of pregnancy, either by chance or through receiving timely, adequate hospital care, now known as maternal "nearmisses". This group often share many characteristics with women who have died from obstetric complications (40,41)--similar pathways and difficulties regarding costs of care, transport and management of complications. (15,16,18-20,25,34,35,42,43)
Further studies have defined near-misses as an outcome of organ failure, when an important impairment in any organ function appears; the World Health Organization provided an operational definition of this in 2009. (8) Near-misses constitute a proxy model for maternal death, giving a larger number of cases for analysis that are more acceptable to individuals and institutions than maternal deaths. (7,8,16) Moreover, the women are able to provide information after the event, including the difficulties they faced in reaching timely obstetric treatment, (18) information that families of women who died may not be able to provide. (15,18,44) Indeed, some authors suggest that information on maternal near-miss events could be key for improving quality of care. (19,25)
The high number of women arriving in poor clinical condition at referral facilities (19,34) may be considered as an indicator of the effectiveness of emergency referrals, while the number of near-misses may be an indicator of the performance of obstetric services. (34) Therefore, using the three-delays framework with the near-miss approach may enhance monitoring of health system functioning and gaps in obstetric care.
Methods for collecting information on delays have ranged from verbal autopsies to in-depth review of a small number of cases, to a more systematic audit of all cases. (14,41) Systematic audit is the recommended method for studying maternal deaths, but recent studies of near-miss patients enables greater use of in-depth interviews with the survivors of severe maternal morbidity.
These have proven to be a powerful tool for identifying constraints in medical assistance and understanding how women experience the obstetric care they receive. (18) They can also be used for identifying and avoiding sub-standard care factors and analysing the barriers to primary and secondary prevention. (43) In short, they give a reasonable quality of information for the evaluation of maternal health programmes and health system functioning.
Interventions based on the framework
Poor recognition of clinical conditions is one of the factors that lead to delay in seeking care. Therefore, some authors have proposed health education for communities and families to help them recognize danger signs in pregnancy of life-threatening conditions, such as ante-partum haemorrhage, post-partum haemorrhage and eclampsia. (13,17) However, poor recognition may also happen in a health care facility where the health workers are unable to provide adequate diagnosis and timely referral. Medical education, audit and feedback may improve the ability of medical staff to deal with emergencies. New tools for assessing signs and symptoms of severe maternal morbidity for quick and accurate recognition of severe conditions are being developed. (45)
Many other interventions are currently being tried to reduce delays but have yet to be evaluated as to whether they can be successfully scaled up and how much they contribute to a reduction in maternal deaths. These include:
* on-off payments to cover costs of transport to hospital, (32,46)
* task-shifting policies in which non-physician clinicians are trained to perform a significant proportion of emergency obstetric procedures with similar post-operative outcomes to physicians, as in programmes in Mozambique, Tanzania, Malawi and India, (47,48)
* use of radio-telephones or solar-powered VHF radio communication systems, which have reduced transport delays and improved communication and access to information and advice between, for example, general practitioners and traditional birth attendants, and women patients and health services, (49)
* geographic information systems, designed to work with all types of geographically referenced data, used to trace geographic difficulties in reaching emergency obstetric care, (50) and
* referral system improvements, such as maternity waiting homes, and the creation of "functional splits" within referral hospitals to improve regional and national referral systems. (33,51,52)
Further advances in the three-delays theoretical framework
The "Phase Four" delay
Sometimes, surviving a critical condition may lead to further complications or negative consequences for the woman and her family. The likelihood of developing additional severe clinical conditions and even dying some time after the first event are higher compared to the general population. (53,54) A woman may suffer from acute or chronic clinical conditions as a consequence of the underlying disease or the interventions that saved her life, such as getting an infectious disease like hepatitis from blood transfusions or surgery, or from continuing obstetric problems. Or she may suffer from psychological problems due to what she has been through.
In addition, the economic burden of emergency hospital care may prevent not only her own return for care for such problems, but her whole family's. Although the improvement of maternal health is a prerequisite for development and poverty reduction, in some settings the survival of a near-miss event may perpetuate poverty. The costs of medical care, transport, drugs and medical supplies may have a huge impact on the household budget for a long period of time. (55) The repercussions of surviving severe pregnancy complications have not been thoroughly explored, and further studies are needed.
Limitations of the three-delays model
Although the three-delays model is a widely used framework in maternal death studies, it refers only to emergency obstetric care and does not address missed opportunities for primary prevention or early detection of pregnancy complications during antenatal care. (15,56) Although not sufficient, the role of preventive programmes is also very important in preventing and treating maternal morbidity that may or may not cause deaths. (1)
The fundamental purpose of this theoretical framework aims to draw attention to the gaps in reaching appropriate obstetric care. This is not a linear model; it works only in a retrospective way and does not create the opportunity to improve the care of a specific woman. For a prospective approach, such as a surveillance system to identify and manage factors to prevent a negative outcome, the framework needs rethinking. Even so, improvements in health systems can still be identified and implemented after the fact.
To reduce maternal mortality and near-misses, efforts must reduce the incidence of unwanted pregnancy, the likelihood that a pregnant woman will suffer an avoidable, severe complication of pregnancy or childbirth (e.g. by treating severe anaemia or malaria early in pregnancy or providing safe abortions), and improve the outcomes for women once complications do arise. However, the decline in maternal mortality has been slower than would be expected. (57)
Thaddeus and Maine's model is a powerful tool but it is an explanatory model and does not provide full comprehension of the phenomenon of maternal deaths. The information on the factors underlying maternal deaths is precious for programmers and health managers so they can change the "road to death". The use of the three delays framework by maternal mortality committees has been expanded and the gaps in health systems have become more evident. (28,35) It improves both the visibility of the problem for managers, shows where responsibilities lie, reveals the lack in provision of necessary sexual and reproductive health care, and encourages the claims of the population for a more equitable society. This is one of the strongest points of this framework, that it shows the gaps in human rights guarantees.
But several crucial aspects of this problem are missing. One is the lack of power experienced by women whose general social status is low. Delays may be a result of a dismissive attitude of family members, providers and policymakers and of a political and economic system that puts essential drugs and life-saving equipment out of reach of those who need them. These are human rights violations and a matter of inequity, poverty and gender discrimination. (58)
The other is the importance of political will and political action. Highlighting the added risk of dying after a woman survives a critical event in pregnancy and the crippling debt some families face whether or not she has survived may contribute to understanding the global neglect of rights in which maternal mortality issues are immersed. However, these will only be seen as human rights violations by society if this information creates social actors who are able to push politicians to show "political will". Information about the failures of the health system and the guarantee of rights must, somehow, be made the object of public interest which calls for political action.
It is only recently that maternal mortality has been considered by the United Nations as a consequence of violations of key human rights principles, including accountability, equality, non-discrimination and meaningful participation. (59) This may force governments to respect national constitutions and international treaties to which they are signatories and take responsibility for guaranteeing basic human rights in defence of safe motherhood. Nonetheless, the practical application of these rights is currently inconsistent, inadequate and even accidental. (60)
Understanding maternal deaths as a consequence of neglect implies the recognition that it is due to the disadvantaged position of women in society, including with regard to their reproductive rights. (61) Only women experience the inherent risks of reproduction; this is a matter of sexual difference. However the lack of appropriate reproductive health care is a matter of gender discrimination, and a consequence of a social system "based on the power of sex and class". Gender discrimination occurs in all stages of women's lives: preference for boy children, neglect of care for girls, poor access to health, and maternal mortality. (62) The death of a woman due to pregnancy complications is not only a biological fact; it is also a political choice that is amenable to change and within human grasp. It depends above all upon political will.
The authors acknowledge the financial support of CNPq/DECIT National Research Council and Department of Science and Technology, Brazilian Ministry of Health, Grant No. 402702/2008-5, which sponsored the study "Brazilian Network for the Surveillance of Severe Maternal Morbidity". The theoretical approach described here was developed under the aegis of this study.
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Rodolfo Carvalho Pacagnella, (a) Jose Guilherme Cecatti, (b) Maria Jose Osis, (c) Joao Paulo Souza (d)
(a) PhD student, Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas; and Assistant Professor, Department of Medicine, Federal University of Sao Carlos, Brazil
(b) Full Professor of Obstetrics, Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas; and President, Centre for Studies on Reproductive Health of Campinas (Cemicamp), Campinas, Brazil. Correspondence: firstname.lastname@example.org
(c) Lecturer, Post Graduation Programme, Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas; and Senior Researcher, Centre for Studies on Reproductive Health of Campinas (Cemicamp), Carnpinas, Brazil
(d) Medical Officer, UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
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|Author:||Pacagnella, Rodolfo Carvalho; Cecatti, Jose Guilherme; Osis, Maria Jose; Souza, Joao Paulo|
|Publication:||Reproductive Health Matters|
|Date:||May 1, 2012|
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