Mobil Monitoring Doppler Ultrasound (MoMDUS) study: protocol for a prospective, observational study investigating the use of artificial intelligence and low-cost Doppler ultrasound for the automated quantification of hypertension, pre-eclampsia and fetal growth restriction in rural Guatemala.

INTRODUCTION: Undetected high-risk conditions in pregnancy are a leading cause of perinatal mortality in low-income and middle-income countries. A key contributor to adverse perinatal outcomes in these settings is limited access to high-quality screening and timely referral to care. Recently, a low-cost one-dimensional Doppler ultrasound (1-D DUS) device was developed that front-line workers in rural Guatemala used to collect quality maternal and fetal data. Further, we demonstrated with retrospective preliminary data that 1-D DUS signal could be processed using artificial intelligence and deep-learning algorithms to accurately estimate fetal gestational age, intrauterine growth and maternal blood pressure. This protocol describes a prospective observational pregnancy cohort study designed to prospectively evaluate these preliminary findings. METHODS AND ANALYSIS: This is a prospective observational cohort study conducted in rural Guatemala. In this study, we will follow pregnant women (N =700) recruited prior to 18 6/7 weeks gestation until their delivery and early postpartum period. During pregnancy, trained nurses will collect data on prenatal risk factors and obstetrical care. Every 4 weeks, the research team will collect maternal weight, blood pressure and 1-D DUS recordings of fetal heart tones. Additionally, we will conduct three serial obstetric ultrasounds to evaluate for fetal growth restriction (FGR), and one postpartum visit to record maternal blood pressure and neonatal weight and length. We will compare the test characteristics (receiver operator curves) of 1-D DUS algorithms developed by deep-learning methods to two-dimensional fetal ultrasound survey and published clinical pre-eclampsia risk prediction algorithms for predicting FGR and pre-eclampsia, respectively. ETHICS AND DISSEMINATION: Results of this study will be disseminated at scientific conferences and through peer-reviewed articles. Deidentified data sets will be made available through public repositories. The study has been approved by the institutional ethics committees of Maya Health Alliance and Emory University.

Estimating birth weight from observed postnatal weights in a Guatemalan highland community.

OBJECTIVE: Low birth weight is one of the leading contributors to global perinatal deaths. Detecting this problem close to birth enables the initiation of early intervention, thus reducing the long-term impact on the fetus. However, in low-and middle-income countries, sometimes newborns are weighted days or months after birth, thus challenging the identification of low birth weight. This study aims to estimate birth weight from observed postnatal weights recorded in a Guatemalan highland community. APPROACH: With 918 newborns recorded in postpartum visits at a Guatemalan highland community, we fitted traditional infant weight models (Count's and Reeds models). The model that fitted the observed data best was selected based on typical newborn weight patterns reported in the medical literature and previous longitudinal studies. Then, estimated birth weights were determined using the weight gain percentage derived from the fitted weight curve. MAIN RESULTS: The best model for both genders was the Reeds2 model, with a mean square error of 0.30 kg2 and 0.23 kg2 for male and female newborns, respectively. The fitted weight curves exhibited similar behavior to those reported in the literature, with a maximum weight loss around three to five days after birth, and birth weight recovery, on average, by day ten. Moreover, the estimated birth weight was consistent with the 2015 Guatemalan National Survey, no having a statistically significant difference between the estimated birth weight and the reported survey birth weights (two-sided Wilcoxon rank-sum test; [Formula: see text]). SIGNIFICANCE: By estimating birth weight at an opportune time, several days after birth, it may be possible to identify low birth weight more accurately, thus providing timely treatment when is required.

A Proxy for Detecting IUGR Based on Gestational Age Estimation in a Guatemalan Rural Population.

In-utero progress of fetal development is normally assessed through manual measurements taken from ultrasound images, requiring relatively expensive equipment and well-trained personnel. Such monitoring is therefore unavailable in low- and middle-income countries (LMICs), where most of the perinatal mortality and morbidity exists. The work presented here attempts to identify a proxy for IUGR, which is a significant contributor to perinatal death in LMICs, by determining gestational age (GA) from data derived from simple-to-use, low-cost one-dimensional Doppler ultrasound (1D-DUS) and blood pressure devices. A total of 114 paired 1D-DUS recordings and maternal blood pressure recordings were selected, based on previously described signal quality measures. The average length of 1D-DUS recording was 10.43 ± 1.41 min. The min/median/max systolic and diastolic maternal blood pressures were 79/102/121 and 50.5/63.5/78.5 mmHg, respectively. GA was estimated using features derived from the 1D-DUS and maternal blood pressure using a support vector regression (SVR) approach and GA based on the last menstrual period as a reference target. A total of 50 trials of 5-fold cross-validation were performed for feature selection. The final SVR model was retrained on the training data and then tested on a held-out set comprising 28 normal weight and 25 low birth weight (LBW) newborns. The mean absolute GA error with respect to the last menstrual period was found to be 0.72 and 1.01 months for the normal and LBW newborns, respectively. The mean error in the GA estimate was shown to be negatively correlated with the birth weight. Thus, if the estimated GA is lower than the (remembered) GA calculated from last menstruation, then this could be interpreted as a potential sign of IUGR associated with LBW, and referral and intervention may be necessary. The assessment system may, therefore, have an immediate impact if coupled with suitable intervention, such as nutritional supplementation. However, a prospective clinical trial is required to show the efficacy of such a metric in the detection of IUGR and the impact of the intervention.

mHealth intervention to improve the continuum of maternal and perinatal care in rural Guatemala: a pragmatic, randomized controlled feasibility trial.

BACKGROUND/OBJECTIVE: Guatemala's indigenous Maya population has one of the highest perinatal and maternal mortality rates in Latin America. In this population most births are delivered at home by traditional birth attendants (TBAs), who have limited support and linkages to public hospitals. The goal of this study was to characterize the detection of maternal and perinatal complications and rates of facility-level referral by TBAs, and to evaluate the impact of a mHealth decision support system on these rates. METHODS: A pragmatic one-year feasibility trial of an mHealth decisions support system was conducted in rural Maya communities in collaboration with TBAs. TBAs were individually randomized in an unblinded fashion to either early-access or later-access to the mHealth system. TBAs in the early-access arm used the mHealth system throughout the study. TBAs in the later-access arm provided usual care until crossing over uni-directionally to the mHealth system at the study midpoint. The primary study outcome was the monthly rate of referral to facility-level care, adjusted for birth volume. RESULTS: Forty-four TBAs were randomized, 23 to the early-access arm and 21 to the later-access arm. Outcomes were analyzed for 799 pregnancies (early-access 425, later-access 374). Monthly referral rates to facility-level care were significantly higher among the early-access arm (median 33 referrals per 100 births, IQR 22-58) compared to the later-access arm (median 20 per 100, IQR 0-30) (p = 0.03). At the study midpoint, the later-access arm began using the mHealth platform and its referral rates increased (median 34 referrals per 100 births, IQR 5-50) with no significant difference from the early-access arm (p = 0.58). Rates of complications were similar in both arms, except for hypertensive disorders of pregnancy, which were significantly higher among TBAs in the early-access arm (RR 3.3, 95% CI 1.10-9.86). CONCLUSIONS: Referral rates were higher when TBAs had access to the mHealth platform. The introduction of mHealth supportive technologies for TBAs is feasible and can improve detection of complications and timely referral to facility-care within challenging healthcare delivery contexts. TRIAL REGISTRATION: Clinicaltrials.gov NCT02348840 .

Freedom of choice, expressions of gratitude: Patient experiences of short-term surgical missions in Guatemala.

Lack of surgical care has been highlighted as a critical global health problem, and short-term medical missions (STMMs) have become a de facto measure to address this shortfall. Participation in STMMs is an increasingly popular activity for foreign medical professionals to undertake in low- and middle-income countries (LMICs) where their clinical skills may be in short supply. While there is emerging literature on the STMM phenomenon, patient experiences of surgical missions are underrepresented. This research addresses this gap through thirty-seven in-depth interviews with patients or caregivers who received care from a short-term surgical mission within the three years prior to the four-week data collection period in July and August 2013. Interviews were conducted in Antigua, Guatemala and nearby communities, and participants came from 9 different departments of the country. These first-hand accounts of health-seeking through a surgical mission provide important insights into the benefits and challenges of STMMs that patients encounter, including waiting time, ancillary costs, and access to care. Patient agency in care-seeking is considered within the pluralistic, privatized health care context in Guatemala in which foreign participants deliver STMM care.

Agile Development of a Smartphone App for Perinatal Monitoring in a Resource-Constrained Setting.

Technology provides the potential to empower frontline healthcare workers with low levels of training and literacy, particularly in low- and middle-income countries. An obvious platform for achieving this aim is the smartphone, a low cost, almost ubiquitous device with good supply chain infrastructure and a general cultural acceptance for its use. In particular, the smartphone offers the opportunity to provide augmented or procedural information through active audiovisual aids to illiterate or untrained users, as described in this article. In this article, the process of refinement and iterative design of a smartphone application prototype to support perinatal surveillance in rural Guatemala for indigenous Maya lay midwives with low levels of literacy and technology exposure is described. Following on from a pilot to investigate the feasibility of this system, a two-year project to develop a robust in-field system was initiated, culminating in a randomized controlled trial of the system, which is ongoing. The development required an agile approach, with the development team working both remotely and in country to identify and solve key technical and cultural issues in close collaboration with the midwife end-users. This article describes this process and intermediate results. The application prototype was refined in two phases, with expanding numbers of end-users. Some of the key weaknesses identified in the system during the development cycles were user error when inserting and assembling cables and interacting with the 1-D ultrasound-recording interface, as well as unexpectedly poor bandwidth for data uploads in the central healthcare facility. Safety nets for these issues were developed and the resultant system was well accepted and highly utilized by the end-users. To evaluate the effectiveness of the system after full field deployment, data quality, and corruption over time, as well as general usage of the system and the volume of application support for end-users required by the in-country team was analyzed. Through iterative review of data quality and consistent use of user feedback, the volume and percentage of high quality recordings was increased monthly. Final analysis of the impact of the system on obstetrical referral volume and maternal and neonatal clinical outcomes is pending conclusion of the ongoing clinical trial.

From guidelines to local realities: evaluation of oral rehydration therapy and zinc supplementation in Guatemala.

OBJECTIVE: Diarrhea remains a leading cause of morbidity and mortality for children in low- and middle-income countries throughout the Americas. The World Health Organization (WHO) has developed guidelines on incorporating zinc supplementation (ZS) with traditional oral rehydration therapy (ORT) in order to shorten the duration of diarrheal episodes and to reduce poor health outcomes. Guatemala adopted these guidelines in 2011, but they have not yet been fully implemented at the community level. The objectives of this study were: (1) to co-design an ORT/ZS training program for community members with local health promoters that is appropriate to the local context and (2) to understand how attitudes and behaviors of community members changed after receiving training from the study promoters. METHODS: In an observational study, community health promoters in rural Guatemala were trained according to WHO guidelines, and they worked collaboratively with the study team to develop a training curriculum to implement in their community. Community-based surveys, interviews, and focus group discussions were used to assess acceptability, accessibility, and availability of oral rehydration therapy and zinc supplementation. RESULTS: Use of ORT increased from 63% to 95% among community members following training by local health promoters. Satisfaction with the service offered by health promoters increased from 63% to 90% amongst community members trained by the study promoters. However, knowledge and use of zinc supplementation remained low, which was attributable to unavailability of zinc in the study community. CONCLUSIONS: Use of trained community health promoters is an effective way to translate WHO guidelines to local contexts and overcome sociocultural barriers to care. However, the health system's structure must support availability of essential medicines in order to effectively implement those guidelines.

From guidelines to local realities: evaluation of oral rehydration therapy and zinc supplementation in Guatemala / De las directrices a las realidades locales: evaluación del tratamiento de rehidratación oral y la administración de suplementos de cinc en Guatemala

Objective. Diarrhea remains a leading cause of morbidity and mortality for children in lowand middle-income countries throughout the Americas. The World Health Organization (WHO) has developed guidelines on incorporating zinc supplementation (ZS) with traditional oral rehydration therapy (ORT) in order to shorten the duration of diarrheal episodes and to reduce poor health outcomes. Guatemala adopted these guidelines in 2011, but they have not yet been fully implemented at the community level. The objectives of this study were: (1) to co-design an ORT/ZS training program for community members with local health promoters that is appropriate to the local context and (2) to understand how attitudes and behaviors of community members changed after receiving training from the study promoters. Methods. In an observational study, community health promoters in rural Guatemala were trained according to WHO guidelines, and they worked collaboratively with the study team to develop a training curriculum to implement in their community. Community-based surveys, interviews, and focus group discussions were used to assess acceptability, accessibility, and availability of oral rehydration therapy and zinc supplementation. Results. Use of ORT increased from 63% to 95% among community members following training by local health promoters. Satisfaction with the service offered by health promoters increased from 63% to 90% amongst community members trained by the study promoters. However, knowledge and use of zinc supplementation remained low, which was attributable to unavailability of zinc in the study community. Conclusions. Use of trained community health promoters is an effective way to translate WHO guidelines to local contexts and overcome sociocultural barriers to care. However, the health system’s structure must support availability of essential medicines in order to effectively implement those guidelines.

Objetivo. La diarrea sigue siendo una de las causas principales de morbilidad y mortalidad en los niños de países de ingresos bajos y medianos en toda la Región de las Américas. La Organización Mundial de la Salud (OMS) ha formulado directrices relativas a la incorporación de los suplementos de cinc al tratamiento tradicional de rehidratación oral (TRO) para acortar la duración de los episodios diarreicos y disminuir los resultados deficientes en materia de salud. Guatemala adoptó estas directrices en el 2011, pero todavía no se las aplica plenamente a nivel de la comunidad. Los objetivos de este estudio fueron: 1) codiseñar un programa de capacitación sobre el TRO y los suplementos de cinc dirigido a los miembros de la comunidad por intermedio de promotores locales de salud que sea apropiado para el contexto local y 2) comprender cómo las actitudes y los comportamientos de los miembros de la comunidad cambiaron después de recibir la capacitación de los promotores que formaban parte del estudio. Métodos. Como parte de un estudio de observación, se capacitó a un grupo de promotores comunitarios de salud en zonas rurales de Guatemala sobre las directrices de la OMS, quienes trabajaron conjuntamente con el equipo del estudio para elaborar un programa de capacitación que se ejecutaría en su comunidad. Se usaron encuestas, entrevistas y debates con grupos de sondeo en las comunidades para evaluar la aceptabilidad, accesibilidad y disponibilidad del tratamiento de rehidratación oral y la administración de suplementos de cinc. Resultados. El uso de la TRO aumentó de 63% a 95% entre los miembros de la comunidad después de la capacitación a cargo de los promotores locales de salud. La satisfacción con el servicio ofrecido por los promotores de salud aumentó de 63% a 90% entre los miembros de la comunidad capacitados por los promotores del estudio. Sin embargo, el conocimiento y uso de los suplementos de cinc siguieron siendo bajos, lo que se atribuyó a la falta de disponibilidad de cinc en la comunidad del estudio. Conclusiones. El uso de promotores comunitarios de salud capacitados es una manera eficaz de traducir las directrices de la OMS a los contextos locales y superar los obstáculos socioculturales a la atención. Sin embargo, la estructura del sistema de salud debe apoyar la disponibilidad de los medicamentos esenciales para aplicar eficazmente estas directrices.

From guidelines to local realities: evaluation of oral rehydration therapy and zinc supplementation in Guatemala / De las directrices a las realidades locales: evaluación del tratamiento de rehidratación oral y la administración de suplementos de cinc en Guatemala

ABSTRACT Objective Diarrhea remains a leading cause of morbidity and mortality for children in low- and middle-income countries throughout the Americas. The World Health Organization (WHO) has developed guidelines on incorporating zinc supplementation (ZS) with traditional oral rehydration therapy (ORT) in order to shorten the duration of diarrheal episodes and to reduce poor health outcomes. Guatemala adopted these guidelines in 2011, but they have not yet been fully implemented at the community level. The objectives of this study were: (1) to co-design an ORT/ZS training program for community members with local health promoters that is appropriate to the local context and (2) to understand how attitudes and behaviors of community members changed after receiving training from the study promoters. Methods In an observational study, community health promoters in rural Guatemala were trained according to WHO guidelines, and they worked collaboratively with the study team to develop a training curriculum to implement in their community. Community-based surveys, interviews, and focus group discussions were used to assess acceptability, accessibility, and availability of oral rehydration therapy and zinc supplementation. Results Use of ORT increased from 63% to 95% among community members following training by local health promoters. Satisfaction with the service offered by health promoters increased from 63% to 90% amongst community members trained by the study promoters. However, knowledge and use of zinc supplementation remained low, which was attributable to unavailability of zinc in the study community. Conclusions Use of trained community health promoters is an effective way to translate WHO guidelines to local contexts and overcome sociocultural barriers to care. However, the health system’s structure must support availability of essential medicines in order to effectively implement those guidelines.

RESUMEN Objetivo La diarrea sigue siendo una de las causas principales de morbilidad y mortalidad en los niños de países de ingresos bajos y medianos en toda la Región de las Américas. La Organización Mundial de la Salud (OMS) ha formulado directrices relativas a la incorporación de los suplementos de cinc al tratamiento tradicional de rehidratación oral (TRO) para acortar la duración de los episodios diarreicos y disminuir los resultados deficientes en materia de salud. Guatemala adoptó estas directrices en el 2011, pero todavía no se las aplica plenamente a nivel de la comunidad. Los objetivos de este estudio fueron: 1) codiseñar un programa de capacitación sobre el TRO y los suplementos de cinc dirigido a los miembros de la comunidad por intermedio de promotores locales de salud que sea apropiado para el contexto local y 2) comprender cómo las actitudes y los comportamientos de los miembros de la comunidad cambiaron después de recibir la capacitación de los promotores que formaban parte del estudio. Métodos Como parte de un estudio de observación, se capacitó a un grupo de promotores comunitarios de salud en zonas rurales de Guatemala sobre las directrices de la OMS, quienes trabajaron conjuntamente con el equipo del estudio para elaborar un programa de capacitación que se ejecutaría en su comunidad. Se usaron encuestas, entrevistas y debates con grupos de sondeo en las comunidades para evaluar la aceptabilidad, accesibilidad y disponibilidad del tratamiento de rehidratación oral y la administración de suplementos de cinc. Resultados El uso de la TRO aumentó de 63% a 95% entre los miembros de la comunidad después de la capacitación a cargo de los promotores locales de salud. La satisfacción con el servicio ofrecido por los promotores de salud aumentó de 63% a 90% entre los miembros de la comunidad capacitados por los promotores del estudio. Sin embargo, el conocimiento y uso de los suplementos de cinc siguieron siendo bajos, lo que se atribuyó a la falta de disponibilidad de cinc en la comunidad del estudio. Conclusiones El uso de promotores comunitarios de salud capacitados es una manera eficaz de traducir las directrices de la OMS a los contextos locales y superar los obstáculos socioculturales a la atención. Sin embargo, la estructura del sistema de salud debe apoyar la disponibilidad de los medicamentos esenciales para aplicar eficazmente estas directrices.

An mHealth monitoring system for traditional birth attendant-led antenatal risk assessment in rural Guatemala.

Limited funding for medical technology, low levels of education and poor infrastructure for delivering and maintaining technology severely limit medical decision support in low- and middle-income countries. Perinatal and maternal mortality is of particular concern with millions dying every year from potentially treatable conditions. Guatemala has one of the worst maternal mortality ratios, the highest incidence of intra-uterine growth restriction (IUGR), and one of the lowest gross national incomes per capita within Latin America. To address the lack of decision support in rural Guatemala, a smartphone-based system is proposed including peripheral sensors, such as a handheld Doppler for the identification of foetal compromise. Designed for use by illiterate birth attendants, the system uses pictograms, audio guidance, local and cloud processing, SMS alerts and voice calling. The initial prototype was evaluated on 22 women in highland Guatemala. Results were fed back into the refinement of the system, currently undergoing RCT evaluation.

Making surgical missions a joint operation: NGO experiences of visiting surgical teams and the formal health care system in Guatemala.

Each year, thousands of Guatemalans receive non-emergent surgical care from short-term medical missions (STMMs) hosted by local non-governmental organizations (NGOs) and staffed by foreign visiting medical teams (VMTs). The purpose of this study was to explore the perspectives of individuals based in NGOs involved in the coordination of surgical missions to better understand how these missions articulate with the larger Guatemalan health care system. During the summers of 2011 and 2013, in-depth interviews were conducted with 25 representatives from 11 different Guatemalan NGOs with experience with surgical missions. Transcripts were analysed for major themes using an inductive qualitative data analysis process. NGOs made use of the formal health care system but were limited by several factors, including cost, issues of trust and current ministry of health policy. Participants viewed the government health care system as a potential resource and expressed a desire for more collaboration. The current practices of STMMs are not conducive to health system strengthening. The role of STMMs must be defined and widely understood by all stakeholders in order to improve patient safety and effectively utilise health resources. Priority should be placed on aligning the work of VMTs with that of the larger health care system.

Implementation of a training program for low-literacy promotoras in oral rehydration therapy.

OBJECTIVE: The purpose of this study was to ascertain the effectiveness of a culturally appropriate promotora training program related to oral rehydration therapy and diarrheal management. Factors that influenced the development, implementation, and evaluation of the program provided to low-literacy women in Guatemala are explored. DESIGN AND SAMPLE: Promotora training was conducted with 15 Mayan women from a rural community in the highlands of Guatemala. Women were selected by leaders of the community to participate in the program. MEASURES: Quantitative data were collected and analyzed to determine descriptive statistics and reliability coefficients for the pretests and posttests. A nonparametric Wilcoxon test for paired-samples was conducted. The qualitative data from the program evaluations were analyzed for themes. RESULTS: Mean scores increased from 41.73 (SD = 9.65) to 70.33 (SD = 21.29) on the pretest and posttest. The Cronbach's alpha was 0.54 on the pretest with 0.65 on the posttest. The Wilcoxon test demonstrated a significant difference between the pretest and posttest scores (Z = 3.040, p < .05). CONCLUSIONS: Extremely low-literacy levels played a major role in the ability of the women to successfully complete the requirements of the training program. The curriculum demonstrated effectiveness, but will benefit from replication with a larger sample.