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Ahn, Roy

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Ahn

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Ahn, Roy

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Now showing 1 - 6 of 6
  • Publication

    Prevalence of Undiagnosed Hypoxemia in Adults and Children in an Under-Resourced District Hospital in Zambia

    (Springer-Verlag, 2010) Foran, Mark; Ahn, Roy; Novik, Joseph; Tyer-Viola, Lynda; Chilufya, Kennedy; Katamba, Kasseba; Burke, Thomas

    Background: In adequately resourced clinical environments, diagnosis of hypoxemia via pulse oximetry is routine. Unfortunately, pulse oximetry is rarely utilized in under-resourced hospitals in developing countries. Aim: The prevalence of undiagnosed hypoxemia among adults and children with illnesses other than pneumonia in these environments remains poorly described. Methods: This cross-sectional analysis of the prevalence of hypoxemia was conducted in Kapiri Mposhi, Zambia, at the 60-bed District Hospital, which serves a population of 320,000. The resting room air oxygen saturations of two consecutive samples of all adult and pediatric inpatients were measured in December 2008 and March 2009 using handheld pulse oximetry. Hypoxemia was defined as resting room air SpO(_{2}) less than 90%. Results: A total of 192 patients were enrolled: 68 young children (<5 years old), 15 older children (5-17 years old), and 109 adults (≥18 old). Five young children (7%), 0 older children (0%), and 10 adults (9%) were hypoxemic. No hypoxemic patients were receiving oxygen therapy at the time of diagnosis. Pneumonia, tuberculosis, and malnutrition were the most common conditions among those with hypoxemia. Oximetry data changed clinical management in all observed cases of hypoxemia and several cases of normoxemia, leading to application of supplemental oxygen, initiation of further diagnostic testing, prolongation of inpatient stay, or expedited discharge home. Conclusions: Undiagnosed hypoxemia is present among inpatients at this district hospital in rural Zambia with high prevalence in both adults and young children. These results support routine screening for hypoxemia in similar facilities in both age groups. Further investigation is warranted into the clinical impact and cost-effectiveness of pulse oximetry, provision of oxygen concentrators, and training on their use in developing countries.

  • Publication

    Development of a scale to measure individuals’ ratings of peace

    (BioMed Central, 2014) Zucker, Howard; Ahn, Roy; Sinclair, Samuel Justin; Blais, Mark; Nelson, Brett; Burke, Thomas

    Background: The evolving concept of peace-building and the interplay between peace and health is examined in many venues, including at the World Health Assembly. However, without a metric to determine effectiveness of intervention programs all efforts are prone to subjective assessment. This paper develops a psychometric index that lays the foundation for measuring community peace stemming from intervention programs. Methods: After developing a working definition of ‘peace’ and delineating a Peace Evaluation Across Cultures and Environments (PEACE) scale with seven constructs comprised of 71 items, a beta version of the index was pilot-tested. Two hundred and fifty subjects in three sites in the U.S. were studied using a five-point Likert scale to evaluate the psychometric functioning of the PEACE scale. Known groups validation was performed using the SOS-10. In addition, test-retest reliability was performed on 20 subjects. Results: The preliminary data demonstrated that the scale has acceptable psychometric properties for measuring an individual’s level of peacefulness. The study also provides reliability and validity data for the scale. The data demonstrated internal consistency, correlation between data and psychological well-being, and test-retest reliability. Conclusions: The PEACE scale may serve as a novel assessment tool in the health sector and be valuable in monitoring and evaluating the peace-building impact of health initiatives in conflict-affected regions.

  • Publication

    Emergency and urgent care capacity in a resource-limited setting: an assessment of health facilities in western Kenya

    (BMJ Publishing Group, 2014) Burke, Thomas; Hines, Rosemary; Ahn, Roy; Walters, Michelle; Young, David; Anderson, Rachel Eleanor; Tom, Sabrina M; Sisodia, Rachel; Obita, Walter; Nelson, Brett

    Objective: Injuries, trauma and non-communicable diseases are responsible for a rising proportion of death and disability in low-income and middle-income countries. Delivering effective emergency and urgent healthcare for these and other conditions in resource-limited settings is challenging. In this study, we sought to examine and characterise emergency and urgent care capacity in a resource-limited setting. Methods: We conducted an assessment within all 30 primary and secondary hospitals and within a stratified random sampling of 30 dispensaries and health centres in western Kenya. The key informants were the most senior facility healthcare provider and manager available. Emergency physician researchers utilised a semistructured assessment tool, and data were analysed using descriptive statistics and thematic coding. Results: No lower level facilities and 30% of higher level facilities reported having a defined, organised approach to trauma. 43% of higher level facilities had access to an anaesthetist. The majority of lower level facilities had suture and wound care supplies and gloves but typically lacked other basic trauma supplies. For cardiac care, 50% of higher level facilities had morphine, but a minority had functioning ECG, sublingual nitroglycerine or a defibrillator. Only 20% of lower level facilities had glucometers, and only 33% of higher level facilities could care for diabetic emergencies. No facilities had sepsis clinical guidelines. Conclusions: Large gaps in essential emergency care capabilities were identified at all facility levels in western Kenya. There are great opportunities for a universally deployed basic emergency care package, an advanced emergency care package and facility designation scheme, and a reliable prehospital care transportation and communications system in resource-limited settings.

  • Publication

    A qualitative assessment of the impact of a uterine balloon tamponade package on decisions regarding the role of emergency hysterectomy in women with uncontrolled postpartum haemorrhage in Kenya and Senegal: Table 1

    (BMJ, 2016) Pendleton, Anna; Natarajan, Abirami; Ahn, Roy; Nelson, Brett; Eckardt, Melody J; Burke, Thomas

    Objectives To assess the impact of a every second matters for mothers and babies uterine balloon tamponade package (ESM-UBT) on provider decisions regarding emergency hysterectomy in cases of uncontrolled postpartum haemorrhage (PPH).

    Design Qualitative assessment and analysis of a subgroup extracted from a larger database that contains all UBT device uses among ESM-UBT trained health providers.

    Setting Health facilities in Kenya and Senegal with ESM-UBT training and capable of performing emergency hysterectomies.

    Participants All medical doctors who had placed a UBT for uncontrolled PPH subsequent to implementation of ESM-UBT at their facility, and who also had the capabilities of performing emergency hysterectomies.

    Primary outcome measures The impact of ESM-UBT on decisions regarding emergency hysterectomy in cases of uncontrolled PPH.

    Results 30 of the 31 medical doctors (97%) who fulfilled the inclusion criteria were independently interviewed. Collectively the interviewed medical doctors had placed over 80 UBT devices for uncontrolled PPH since ESM-UBT implementation. All 30 responded that UBT devices immediately controlled haemorrhage and prevented women from being taken to emergency hysterectomy. All 30 would continue to use UBT devices in future cases of uncontrolled PPH.

    Conclusions These preliminary data suggest that following ESM-UBT implementation, emergency hysterectomy for uncontrolled PPH may be averted by use of uterine balloon tamponade.

  • Publication

    An International Comparative Public Health Analysis of Sex Trafficking of Women and Girls in Eight Cities: Achieving a More Effective Health Sector Response

    (Springer US, 2013) Macias Konstantopoulos, Wendy; Ahn, Roy; Alpert, Elaine J.; Cafferty, Elizabeth; McGahan, Anita; Williams, Timothy P.; Castor, Judith Palmer; Wolferstan, Nadya; Purcell, Genevieve; Burke, Thomas

    Sex trafficking, trafficking for the purpose of forced sexual exploitation, is a widespread form of human trafficking that occurs in all regions of the world, affects mostly women and girls, and has far-reaching health implications. Studies suggest that up to 50 % of sex trafficking victims in the USA seek medical attention while in their trafficking situation, yet it is unclear how the healthcare system responds to the needs of victims of sex trafficking. To understand the intersection of sex trafficking and public health, we performed in-depth qualitative interviews among 277 antitrafficking stakeholders across eight metropolitan areas in five countries to examine the local context of sex trafficking. We sought to gain a new perspective on this form of gender-based violence from those who have a unique vantage point and intimate knowledge of push-and-pull factors, victim health needs, current available resources and practices in the health system, and barriers to care. Through comparative analysis across these contexts, we found that multiple sociocultural and economic factors facilitate sex trafficking, including child sexual abuse, the objectification of women and girls, and lack of income. Although there are numerous physical and psychological health problems associated with sex trafficking, health services for victims are patchy and poorly coordinated, particularly in the realm of mental health. Various factors function as barriers to a greater health response, including low awareness of sex trafficking and attitudinal biases among health workers. A more comprehensive and coordinated health system response to sex trafficking may help alleviate its devastating effects on vulnerable women and girls. There are numerous opportunities for local health systems to engage in antitrafficking efforts while partnering across sectors with relevant stakeholders.

  • Publication

    Use of prophylactic uterotonics during the third stage of labor: a survey of provider practices in community health facilities in Sierra Leone

    (Springer Nature, 2016) Natarajan, Abirami; Ahn, Roy; Nelson, Brett; Eckardt, Melody; Kamara, Jennifer; Kargbo, SAS; Kanu, Pity; Burke, Thomas

    Background Postpartum hemorrhage remains the leading cause of maternal mortality worldwide. Administration of uterotonics during the third stage of labor is a simple and well established intervention that can significantly decrease the development of postpartum hemorrhage. Little is known about the use of prophylactic uterotonics in peripheral health centers, where the majority of normal deliveries occur. The purpose of this study is to assess health provider current practices and determinants to the use of prophylactic uterotonics in Sierra Leone, a country with one of the highest maternal mortality ratios worldwide.

    Methods This is a mixed methods study using descriptive cross-sectional survey and qualitative interviews in community health facilities in Freetown, Sierra Leone following a comprehensive training on postpartum hemorrhage. Facilities and providers were surveyed between May and June 2014. Qualitative methods were used to identify barriers and facilitators to the use of prophylactic uterotonics.

    Results A total of 134 providers were surveyed at 39 periphreal health facilities. Thirteen facilities (39 %) reported an inconsistent supply of oxytocin. The majority of facilities (64 %) stored oxytocin at room temperature. Provider level, in-service training, and leadership role were significantly associated with prophylactic uterotonic use. Overall, 62 % of providers reported routine use. Midwives were most likely to routinely administer uterotonics (93 %), followed by community health officers/assistants (78 %), maternal and child health aides (56 %), and state-enrolled community health nurses (52 %). Of the providers who received in-service training, 67 % reported routine use; of those with no in-service training, 42 % reported routine use. Qualitative analysis revealed that facility protocols, widespread availability, and provider perception of utility facilitated routine use. Common barriers reported included inconsistent supply of uterotonics, lack of knowledge regarding timely administration, and provider attitude regarding utility of uterotonics following normal deliveries.

    Conclusion There is considerable room for improvement in availability and administration of prophylactic uterotonics. Understanding barriers to routine use may aid in developing multifaceted pre-service and in-service training interventions designed to improve routine intrapartum care.