To evaluate whether a focused education program and implementation of a treatment bundle increases the rate of early evidence-based interventions in patients with acute infections.
Single-center, prospective, before-and-after feasibility trial.
Emergency department of a sub-Saharan African district hospital.
Patients > 28 days of life admitted to the study hospital for an acute infection.
The trial had three phases (each of 4 months). Interventions took place during the second (educational program followed by implementation of the treatment bundle) and third (provision of resources to implement treatment bundle) phases.
Measurements and main results
Demographic, clinical, and laboratory data were collected at study enrollment; 24, 48, and 72 h after hospital admission; and at discharge. A total of 1594 patients were enrolled (pre-intervention, n = 661; intervention I, n = 531; intervention II, n = 402). The rate of early evidence-based interventions per patient during Intervention Phase I was greater than during the pre-intervention phase (74 ± 17 vs. 79 ± 15%, p < 0.001). No difference was detected when data were compared between Intervention Phases I and II (79 ± 15 vs. 80 ± 15%, p = 0.58). No differences in the incidence of blood transfusion (pre-intervention, 6%; intervention I, 7%; intervention II, 7%) or severe adverse events in the first 24 h (allergic reactions: pre-intervention, 0.2%; intervention I, 0%; intervention II, 0%; respiratory failure: pre-intervention, 2%; intervention I, 2%; intervention II, 2%; acute renal failure: pre-intervention, 2%; intervention I, 2%; intervention II, 1%) were observed.
Our results indicate that a focused education program and implementation of an infection treatment bundle in clinical practice increased the rate of early evidence-based interventions in patients with acute infections (mostly malaria) admitted to a sub-Saharan African district hospital. Provision of material resources did not further increase this rate. While no safety issues were detected, this could be related to the very low disease severity of the enrolled patient population (http://www.clinicaltrials.gov: NCT02697513).
Infection and sepsis are among the leading causes of death worldwide. The annual burden of sepsis in high-income countries is estimated to be nearly 2.4–2.8 million cases . Mortality associated with sepsis is approximately 20–30% . The impact of infection and sepsis on middle- and low-income countries is even greater. For example, 90% of deaths worldwide from pneumonia, meningitis, and other infections occur in middle- and low-income countries . Approximately 60% of the 7 million global deaths in neonates and infants annually are attributable to infection, with the majority of cases occurring in middle- and low-income countries . Recommended intensive care interventions for the management of patients with sepsis  may be impractical, unaffordable, and possibly even harmful when implemented in middle- and low-income countries [6,7,8,9]. Consequently, early recognition and appropriate treatment of acute infection is essential.
The Sepsis in Resource-Limited Settings Workgroup of the Surviving Sepsis Campaign hypothesized that, in the low-income country of Rwanda, the rate of evidence-based interventions per patient during the first 6 h after hospital admission for patients experiencing acute infections would be higher after two interventions: (1) a focused infection education program, including the introduction of a simple infection bundle, and (2) provision of material resources to ensure that supplies are always immediately available for management of acute infection. We conducted this feasibility and safety trial at the rural Gitwe District Hospital and eight referring health centers to test our hypothesis that a focused education program and introduction of an infection treatment bundle would increase the rate of early evidence-based interventions in patients with acute infections.
Materials and methods
This study was designed as an investigator-initiated, single-center, prospective, before-and-after feasibility trial applying a step-wedge approach. The protocol of this trial was pre-published (http://www.clinicaltrials.gov; NCT02697513). It was reviewed and approved by the National Health and Research Committee as well as the Rwanda National Ethics Committee (no. 007/RNEC/2016). The study was conducted in accordance with ethical principles of the Declaration of Helsinki. Written informed consent was obtained from all study patients or parents/next of kin of children before study enrollment. Consent forms were translated into Kinyarwanda. The trial was conducted at the adult and pediatric emergency department of Gitwe District Hospital as well as eight referring health centers in the Ruhango District, Southern Province, Rwanda. The manuscript was prepared according to a modified CONSORT statement (Electronic Supplementary Material).
Gitwe District Hospital
Gitwe District Hospital serves a population of approximately 160,000 and has 200 beds, one emergency department with separate adult and pediatric admission zones, two operating theaters, one laboratory (rapid diagnostic tests for HIV and tuberculosis available, malaria diagnosed by thick drop microscopy, no facilities for blood chemistry or microbiologic cultures), one radiography and one sonography machine. No intensive care or high-dependency services are available. The hospital includes medical, surgical, pediatric, and gynecologic/obstetric departments. Surgical services are provided only on selected days. Patients with emergency conditions requiring urgent surgical interventions are usually transferred to the next-level hospital. Between the hours of 5:00 p.m. and 7:00 a.m., patients are directly managed by one on-call general practitioner and several in-house nurses and nurse assistants. The referring health centers are staffed by nurses and nurse assistants. Transfers over dirt roads between the health centers and Gitwe District Hospital occur mainly by four-wheel-drive vehicles equipped for ambulance service. Transfers are mostly limited to daylight hours.
Patients who were admitted to Gitwe District Hospital for a suspected or confirmed acute infectious disease (independent of the presence of sepsis) were eligible for study inclusion. Exclusion criteria were age < 28 days of life, known allergy to any of the study drugs, limited therapy due to terminal disease, or refusal to provide written informed consent.
The pre-intervention phase (March 14, 2016, until July 17, 2016) consisted of acute infection incidence data collection. During this phase, there were no study-related interventions and treatment of study patients was determined by the attending physician. Clinical treatment guidelines for adults and children have been published by the Rwanda Ministry of Health  and are widely applied across the country. Intervention Phase I (July 18, 2016, until November 21, 2016) was immediately preceded by 1.5-day education sessions focused on prevention and recognition of infection, as well as infection treatment bundles for adults and children (Fig. 1; course materials summarized in Figure S1 in the Electronic Supplementary Material). These education sessions took place over a 5-day period (July 11–15, 2016). One hundred sixty-three healthcare professionals (including nurses and physicians) from Gitwe District Hospital and the eight referring health centers participated in the education sessions. Education materials were locally oriented and printed by a community vendor. Pre-education session tests revealed knowledge gaps among the participating healthcare professionals with regard to recognition and management of acute infections. Post-education session tests demonstrated a significant reduction in these knowledge gaps. For instance, correct responses on a 15-question test improved from a mean of 7.8 (SD 3.4) before the training sessions to 13.7 (SD 2) after the sessions (p < 0.01, paired Student t test). Intervention Phase I began on July 18, 2016, with implementation of pediatric (< 15 years) and adult acute infection treatment bundles (Fig. 1). Intervention Phase II was initiated on November 21, 2016, and involved provision of material resources to ensure that supplies were consistently available to implement the infection treatment bundles at all study sites. For logistic reasons, oxygen could not be provided to the referring health centers or during transfer to Gitwe District Hospital.
Data Documentation and Processing
Throughout all three study phases, three research assistants who were not otherwise involved in patient care and worked on a rotation schedule of 24 h per day, 7 days per week, were present in the emergency department of Gitwe District Hospital. These research assistants screened patients for study eligibility and collected data for all study patients. They utilized a standardized documentation sheet (Figure S2 Electronic Supplementary Material). All patients included in the trial were reevaluated at 24, 48, and 72 h after hospital admission, and at hospital discharge. Anonymized data were entered into an electronic database (REDCap)  and securely stored at the University of Nebraska Medical Center in Omaha, Nebraska, USA. Before data analysis, the database records underwent repeated checks to detect documentation and/or entry errors.
For this study, sepsis was defined according to the 1991 American College of Chest Physicians/Society of Critical Care Medicine criteria . Since blood tests to determine the full Sequential Organ Failure Assessment (SOFA) score were not available at any of the study sites in Rwanda, the quick SOFA (qSOFA) score (calculated from data collected at admission to the emergency department of Gitwe District Hospital) was used to identify study patients with an increased risk of death as suggested by the Sepsis-3 study group . In children (< 15 years), sepsis was diagnosed if the child had a suspected or proven infection with any one of the following criteria: body temperature < 36 °C, body temperature > 38 °C plus altered mental status, body temperature > 38 °C plus respiratory distress, body temperature > 38 °C plus a history of not feeding, or body temperature > 38 °C plus convulsions . Relevant other definitions are summarized in Table S1 of the Electronic Supplementary Material.
The primary outcome measure for this investigation was the difference in the rate of evidence-based interventions per study patient during the first six hours after admission to the emergency department of Gitwe District Hospital during the pre-intervention phase and Intervention Phase I. Evidence-based interventions were defined as: (1) initiation of antimicrobial therapy; (2) surgical source control; (3) blood glucose measurement and IV glucose administration (in cases of altered mental state and hypoglycemia, respectively); (4) placement of patient in recovery position (in cases of unresponsiveness to touch and/or pain); (5) oxygen administration (in cases of respiratory distress); and (6) fluid administration (in cases of systemic hypoperfusion). The primary outcome was assessed at 6 h after study patients were admitted to the emergency department of Gitwe District Hospital.
Secondary outcome measures for this investigation included the difference in the rate of evidence-based interventions (defined and assessed as above) per study patient during the first 6 h after admission to the emergency department of Gitwe District Hospital during Intervention Phases I and II. Also included were the difference in the rate of evidence-based interventions (defined and assessed as above) at referring health centers over the three study phases. In addition, secondary outcome measures included differences in the incidence of newly occurring sepsis during the first 72 h after hospital admission over the three study phases (assessed at 24-h intervals during the first 72 h after hospital admission) as well as difference in hospital mortality rate (assessed at hospital discharge) over the three study phases. Further secondary outcome measures included differences in the incidence of pulmonary edema, allergic reactions, and acute renal failure during the first 24 h after hospital admission (assessed 24 h after hospital admission), as well as differences in the need for blood transfusion over the three study phases (assessed at hospital discharge).
The primary null hypothesis was: a focused education program and introduction of a simple acute infection treatment bundle would not influence the rate of early, evidence-based interventions. The study was designed as a superiority trial with 80% power to detect a 15-percentage-point difference in the rate of early evidence-based interventions per patient (e.g., 50–65%) at an alpha error of 5%. These assumptions were based on 2012–2014 statistics from Gitwe District Hospital suggesting that approximately 1200 patients annually are admitted to the hospital for acute infections.
One interim analysis was performed on September 27, 2016. During this interim analysis, the incidence of predefined adverse events (allergic reaction, pulmonary edema, allergic reactions, and acute renal failure during the first 24 h after hospital admission) and hospital mortality were compared between the pre-intervention phase and Intervention Phase I. O’Brien-Fleming boundaries were applied. No differences were observed in any of these parameters. Consequently, patient recruitment continued.
Following locking and plausibility control of the database, statistical analyses were performed, applying the intention-to-treat principle and using the PASW statistical software package (IBM SPSS Statistics 20; IBM). Normality assumption of all continuous data was tested using Shapiro–Wilk tests. All variables were approximately normally distributed except for the duration of symptoms before hospital admission, the number of infectious foci, and blood glucose level at hospital admission. These variables are presented as median values with interquartile ranges. In view of the fact that all datasets for primary and secondary outcome measures were complete, no statistical methods were used to compensate for missing values. Descriptive statistical methods were used to report demographic, clinical, and outcome data. Comparisons between groups were conducted using the unpaired Student t-test or Chi square test, as appropriate. In addition to the main analysis, the primary outcome measure was analyzed separately for the following a priori defined subgroups (including tests for interaction): children (< 15 years), adults, patients with malaria, and patients referred from health centers. In view of the low number of patients with known or newly diagnosed HIV infection (n = 33), we discarded the planned subgroup analysis that included only patients positive for HIV. We hypothesized that significant differences in the primary outcome measure between the pre-intervention phase and Intervention Phase I would also be detectable in these subgroups (without differences between subgroups). In a post hoc analysis, an unadjusted logistic regression analysis was performed to assess whether the number of evidence-based interventions (independent variable) was associated with hospital survival (dependent variable). Data are presented as mean values ± SD or absolute values with percentages, if not otherwise indicated. We considered p values < 0.05 to indicate statistical significance.
During the 12-month study period (March 14, 2016, until March 13, 2017), 1594 patients were enrolled in the trial (Fig. 2). No patient withdrew consent or was lost to follow-up until hospital discharge. Table 1 summarizes the characteristics of study patients recruited during each study phase.
Primary and Secondary Outcomes
The incidence of evidence-based interventions per patient during the first 6 h after hospital admission for treatment of infection during Intervention Phase I was significantly greater than the incidence of evidence-based interventions during the pre-intervention phase (74 ± 17 vs. 79 ± 15%, p < 0.001). No difference in the incidence of evidence-based interventions per patient was detected between Intervention Phases I and II. The incidence of antimicrobial therapy initiation and the incidence of fluid resuscitation at the health centers were both significantly greater when data from the two intervention phases were compared to the pre-intervention phase. We observed no differences in the incidence of new sepsis during the first 72 h after hospital admission or the hospital survival rate over the three study phases (Table 2).
The mean amount of IV fluid administered to study patients presenting with signs of systemic hypoperfusion over the first 6 h of the study was significantly greater during the two intervention phases compared to the pre-intervention phase (pre-intervention: 32 ± 21 mL/kg/6 h, n = 451; Intervention I: 40 ± 23 mL/kg/6 h, n = 389; Intervention II: 39 ± 22 mL/kg/6 h, n = 277; p < 0.001). When data from all study phases were compared, we observed no differences between the incidence of severe adverse events in the first 24 h after hospital admission. Further, we observed no differences in the incidence of blood transfusion over the three study phases (Table 3). We observed similar results for all safety outcome measures when data from children and adults were compared.
Subgroup and post hoc analyses
The primary outcome measure was significantly different when data from the pre-intervention and Intervention Phase I were compared for all a priori defined subgroups. Interaction tests identified significant differences for the effect size between adults and children as well as between patients with and without malaria (co-)infection (Table 4). The unadjusted logistic regression analysis revealed a higher incidence of hospital survival as the number of evidence-based interventions implemented increased during the first 6 h after hospital admission (odds ratio per evidence-based intervention implemented, 1.25; 95% CI 0.96–1.63).
This feasibility trial of 1594 patients found that a focused education program and implementation of an infection treatment bundle increased the rate of early evidence-based interventions in patients with an acute infection treated in a rural, sub-Saharan African hospital. This effect was observed in the entire population as well as in all predefined subgroups. Provision of material resources did not result in a further increase in the rate of early evidence-based interventions provided. Except for an increase in the rate of antimicrobial therapy and fluid resuscitation initiated by health centers, no further secondary end point exhibited statistical significance. We did not observe a difference in the incidence of severe adverse events between the three study phases.
Although the three study phases covered comparable time intervals, the number of patients enrolled in each of the periods differed. Differences in the regional prevalence of acute infectious diseases during the study period can be explained by the two annual rainy seasons in Rwanda, which occur during March and April and during October and November. Given that this trial used specific therapeutic interventions as its primary outcome measure, it is questionable whether these differences have relevantly influenced its results. The education program and acute infection treatment bundle were associated with an increase in the rate of evidence-based interventions performed for patients with acute infections during the first 6 h after hospital admission. The rate of serious adverse events and the need for blood transfusion remained unchanged during the three study phases.
It should be noted that, before the acute infection education program and bundle implementation, the rate of evidence-based treatment for patients with acute infections was higher than assumed in the power analysis (74 vs. 50%). Although the investigation does not explain this finding, countrywide implementation of guidelines for the management of common infectious diseases may have played a role. In addition, the before-and-after design of our trial may have introduced a Hawthorne effect. The Hawthorne effect has been found to be relatively common in community intervention trials, particularly in resource-limited settings such as sub-Saharan Africa .
The high rate of evidence-based treatment in patients with an acute infection before the trial intervention could explain why the difference in the primary outcome measure was small but statistically significant. Nonetheless, the education program and implementation of the infection treatment bundle further increased the rate. This effect was most pronounced in healthcare centers where the incidence of antimicrobial administration and fluid resuscitation rose by 30 and 118%, respectively. Our data highlight the feasibility and value of locally customized education with introduction of a treatment bundle and suggest that such bundles can be effectively introduced even in resource-limited settings.
Surprisingly, consistent provision of material resources to implement the infection treatment bundle in the study hospital and referring health centers (Intervention Phase II) failed to further increase the rate of evidence-based interventions per study patient. This suggests that, even in a resource-limited setting, implementation of an infection treatment bundle is feasible without provision of extra material resources [16,17,18]. This interpretation is consistent with the results of previous surveys indicating that material resources required to implement the infection treatment bundle (as used in this trial) were widely available even in resource-limited healthcare facilities in middle- and low-income countries [16,17,18].
The observation that serious adverse events and the need for blood transfusion remained unchanged over the three study phases supports the conclusion that our study interventions were likely safe. Given their low incidence, our trial was underpowered to demonstrate with certainty that implementation of the infection treatment bundle did not result in more adverse events. This conclusion is important because previous sepsis therapies supported by scientific evidence from high-income countries resulted in more complications and/or higher fatality rates when implemented in resource-limited settings [7,8,9]. For instance, three randomized controlled trials conducted in sub-Saharan Africa reported increased mortality associated with early fluid resuscitation in patients with sepsis and malaria in the absence of mechanical ventilation [8, 9, 19]. The fluid volumes administered in our study were similar to the fluid volumes administered in one of these trials  but smaller than the fluid volumes administered in the other two [8, 19]. It should also be noted that almost two-thirds of the patients enrolled in our study were children (< 15 years), and the rate of malaria (co-)infection was high (82.4%). An important difference between our study and the previous studies was that the patients included in our study demonstrated a lesser severity of illness. In particular, the patients in our study demonstrated less severe anemia. In fact, sepsis criteria were fulfilled in only one in three of our study patients. The fact that fluids were administered at an earlier stage of infection and before cardiovascular compromise may explain why we did not observe a high rate of adverse advents and, in particular, why no pulmonary edema was observed in our study.
The hospital mortality rates observed in our trial were low, which most likely reflects the low overall disease severity of the study population. Both the relatively low rate of HIV infection  and the comparatively short duration between symptom onset and presentation to a healthcare facility may have further contributed to the low fatality rate. These observations may reflect the effectiveness of the Rwandese healthcare system and may explain why studies from other sub-Saharan African countries reported higher death rates in patients with acute infection and sepsis [20,21,22]. Our trial was therefore underpowered to detect a difference in hospital mortality. However, the results of the logistic regression model suggest that the number of evidence-based interventions per patient may be associated with improved hospital survival. Because this association missed the statistical significance level, it should be further evaluated in a larger trial. Similarly, our study was not designed to detect a difference in the incidence of new sepsis occurrence following treatment implementation and hospital admission. We believe, though we cannot provide evidence to confirm, that patient- and disease-related factors, rather than treatment-related factors, determined whether patients fulfilled sepsis criteria only after study inclusion.
Certain limitations must be considered when interpreting the results of this trial. First, antimicrobial resistance is common in sub-Saharan Africa  and can crucially reduce the beneficial effects of antimicrobial therapy. Because antimicrobial resistance patterns for the study region were not available, we could not be sure whether antimicrobial therapy as per the study protocol was appropriate and truly effective. Second, our trial was conducted at a single center. This per se increases the risk of inflated estimates as compared to multicenter trials . Furthermore, it is important to notice that site-specific factors (e.g., the absence of an emergency surgery service) and study population-specific factors (e.g., high incidence of malaria) limit the external validity and generalizability of our findings. Third, there is evidence that the effect of specific study interventions (e.g., antibiotic therapy, fluid resuscitation) are exquisitely time-sensitive [25, 26]. Since we only documented whether study interventions were performed during the first 6 h after hospital admission, we cannot provide data on the exact time points when therapies were initiated. Finally, the fact that only a summary of the study protocol and analysis plan was pre-published (http://www.clinicaltrials.gov), and not a detailed protocol and statistical analysis plan, increased the risk of bias. Notably (and in contrast to the pre-published protocol), we did not measure the exact time point at which study interventions were performed, but we documented whether study interventions were completed during the first 6 h after hospital admission.
The results of this feasibility trial indicate that a focused acute infection education program and implementation of an infection treatment bundle increased the rate of early evidence-based interventions in patients with acute infections (mostly malaria) admitted to a rural, sub-Saharan African district hospital. While no safety issues were detected, this could be related to the very low disease severity of the enrolled patient population. The number of early evidence-based interventions might be associated with improved hospital survival.
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This study was funded by the Life Priority Fund, the Hellman Foundation, and the King Baudouin Foundation. The research project was supported by the European Society of Intensive Care Medicine and the Society of Critical Care Medicine through the Surviving Sepsis Campaign.
Conflicts of interest
Dr. Mujyarugamba’s institution received funding from Gitwe Hospital. Dr. Nyiringabo received funding from the Society of Critical Care Medicine (SCCM). Dr. Kwizera received travel and accommodation to assist in the training portion of the study. Dr. Bagenda received funding from SCCM and the European Society of Intensive Care Medicine (ESICM); he received support for article research from SCCM and ESICM, and he disclosed having two shares in Mylan NV. Dr. Mer received funding (honoraria for advisory boards and education talks delivered) from Pfizer, AstraZeneca, MSD, Gilead, Aspen, Sun, and 3 M. Ms. Harmon’s institution received funding from King Baudouin Foundation ($25,000), Hellman Foundation ($50,000), and BD Corporation (provided supplies of $5000 utilized for sepsis carts at Gitwe Hospital in Rwanda and a donation to the project of $2500, which was used for the cart purchases and instructional materials). Dr. Farmer received support for article research from the Hellman Foundation. Dr. Patterson received funding from American Board of Anesthesiology, Accreditation Council for Graduate Medical Education, SCCM, Society of Academic Anesthesiology Associations (paid partial expenses after inviting him to give presentations at the Annual Meeting in 2016), and Dickie McCamey LLC (paid expert witness for the defense); he disclosed that his son (Ryan) and daughter (Julia) both received grant funding for projects in Gitwe, Rwanda from the Hellman Foundation (which partially supported this current project via a grant to SCCM); and he received support for article research from the Hellman Foundation. The remaining authors have disclosed that they do not have any potential conflicts of interest.
This article is being published simultaneously in Critical Care Medicine (https://doi.org/10.1097/CCM.0000000000003227) and Intensive Care Medicine.
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Urayeneza, O., Mujyarugamba, P., Rukemba, Z. et al. Increasing evidence-based interventions in patients with acute infections in a resource-limited setting: a before-and-after feasibility trial in Gitwe, Rwanda. Intensive Care Med 44, 1436–1446 (2018). https://doi.org/10.1007/s00134-018-5266-x
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