Adherence to prompt fever evaluation in children with sickle cell disease and the health belief model

Caregivers' Perceived Threat Of Sickle Cell Disease Complications And Its Association With Hydroxyurea Use Among Children With Sickle Cell Disease In Dar Es Salaam, Tanzania

Purpose

Tanzania is the fifth country with the highest sickle cell disease (SCD) prevalence globally. Although hydroxyurea (HU) is available, only 25% of persons with SCD are reported to use it in Tanzania. Perceived disease threat is associated with medication usage in patients with chronic diseases. We assessed the factors associated with caregivers' perceived threat of SCD complications and its relationship with HU use among children with SCD in Dar-es-Salaam.

Methods

We conducted a cross-sectional hospital-based study from May to August 2023. We enrolled 374 caregivers of health-insured children with SCD from 4 public SCD clinics. We adapted the modified original and revised Champion's Health Belief Model Scales to derive perceived threat scores. We used Mann-Whitney and Kruskal-Wallis tests to compare the outcomes across sociodemographic characteristics and regression analysis for factors associated with perceived SCD threat.

Results

The median score (InterQuartile Range) for perceived threat of SCD complications was 559 (175, 598). Sixty-one percent of caregivers had a high SCD perceived threat. The caregivers of under-five children had 141 lower median SCD threat scores than those of children aged 13-17 years, p-value < 0.001. Participants from Regional Referral Hospitals (RRH) had lower median threat scores compared to participants attending Muhimbili National Hospital (MNH), 177 for Amana RRH, 325 Temeke RRH, 585 MNH Mloganzila, and 557 MNH Upanga, p-value <0.001. Children of caregivers with high perceived SCD threat were 3.4 times more likely to use HU compared to those with low SCD threat perception (Incidence Rate Ratio 3.4, 95% CI: 2.7-4.5).

Conclusion

The perceived threat of SCD predicts the likelihood of SCD patients using HU in Dar-es-Salaam, Tanzania. We recommend health education to caregivers aiming to improve their SCD threat perception and thus improve the use of HU among children with SCD in similar settings.

Successful quality improvement project to increase hydroxyurea prescriptions for children with sickle cell anaemia

Hydroxyurea (HU) is an effective but underused disease-modifying therapy for patients with sickle cell anaemia (SCA). EMBRACE SCD, a sickle cell disease treatment demonstration project, aimed to improve access to HU by increasing prescription (Rx) rates by at least 10% from baseline in children with SCA.The Model for Improvement was used as the quality improvement framework. HU Rx was assessed from clinical databases in three paediatric haematology centres. Children aged 9 months-18 years with SCA not on chronic transfusions were eligible for HU treatment. The health belief model was the conceptual framework to discuss with patients and promote HU acceptance. A visual aid showing erythrocytes under the effect of HU and the American Society of Hematology HU brochure were used as educational tools. At least 6 months after offering HU, a Barrier Assessment Questionnaire was given to assess reasons for HU acceptance and refusals. If HU was declined, the providers discussed with family again. We conducted chart audits to find missed opportunities to prescribe HU as one plan-do-study-act cycle.At initial measurement, 50.2% of 524 eligible patients had HU prescribed. During the testing and initial implementation phase, the mean performance after 10 data points was 53%. After 2 years, the mean performance was 59%, achieving an 11% increase in mean performance and a 29% increase from initial to the last measurement (64.8% HU Rx). During a 15-month period, 32.1% (N=168) of the eligible patients who were offered HU completed the barrier questionnaire with 19% (N=32) refusing HU, mostly based on not perceiving enough severity of their children's SCA or fearing side effects.Reviewing patient charts for missed opportunity of offering HU with feedback and evaluating the reasons of declining HU via a questionnaire were key components in increasing HU Rx in our population.

Evaluating the implementation of a multi-level mHealth study to improve hydroxyurea utilization in sickle cell disease

Background

Sickle Cell Disease (SCD) is a progressive genetic disease that causes organ damage and reduces longevity. Hydroxyurea is an underutilized evidence-based medication that reduces complications and improves survival in SCD. In a multi-site clinical trial, part of the NIH-funded Sickle Cell Disease Implementation Consortium (SCDIC), we evaluate the implementation of a multi-level and multi-component mobile health (mHealth) patient and provider intervention to target the determinants and context of low hydroxyurea use. Given the complexity of the intervention and contextual variability in its implementation, we combined different behavioral and implementation theories, models, and frameworks to facilitate the evaluation of the intervention implementation. In this report, we describe engagement with stakeholders, planning of the implementation process, and final analytical plan to evaluate the implementation outcomes.

Methods

During 19 meetings, a 16-member multidisciplinary SCDIC implementation team created, conceived, and implemented a project that utilized Intervention Mapping to guide designing an intervention and its evaluation plan. The process included five steps: (1) needs assessment of low hydroxyurea utilization, (2) conceptual framework development, (3) intervention design process, (4) selection of models and frameworks, and (5) designing evaluation of the intervention implementation.

Results

Behavioral theories guided the needs assessment and the design of the multi-level mHealth intervention. In designing the evaluation approach, we combined two implementation frameworks to best account for the contextual complexity at the organizational, provider, and patient levels: (1) the Consolidated Framework for Implementation Research (CFIR) that details barriers and facilitators to implementing the mHealth intervention at multiple levels (users, organization, intervention characteristics, broader community), and (2) the Technology Acceptance Model (TAM), a conceptual model specific for explaining the intent to use new information technology (including mHealth). The Reach Effectiveness Adoption Implementation and Maintenance (RE-AIM) framework was used to measure the outcomes.

Discussion

Our research project can serve as a case study of a potential approach to combining different models/frameworks to help organize and plan the evaluation of interventions to increase medication adherence. The description of our process may serve as a blueprint for future studies developing and testing new strategies to foster evidence-based treatments for individuals living with SCD.

A Standardized Clinical Pathway to Decrease Hospital Admissions Among Febrile Children With Sickle Cell Disease

BACKGROUND AND OBJECTIVE

Recurrent hospital admissions for patients with sickle cell disease (SCD) are costly and contribute to a low quality of life for patients. We implemented a clinical pathway to safely discharge SCD patients with fever who are evaluated in the emergency department (ED) of a large tertiary care center.

METHODS

An interdisciplinary team of ED and hematology physicians, nurses, and an improvement advisor developed a clinical pathway that identified febrile SCD patients at low risk of serious bacterial infection based on historical, clinical, and laboratory criteria who could be discharged from the ED. Phone follow-up was planned through the use of an automated electronic notification that was sent to an established hematology follow-up pool at the time of ED discharge. We conducted two "fake front end" trials in the ED to receive feedback on our process before full implementation. A postpathway implementation quality improvement team monitored discharge rates, phone follow-up rates and adverse events.

RESULTS

In the first 9 weeks postpathway implementation, 100 SCD patients were evaluated for fever; 84 (24%) met low-risk criteria and were discharged home. This reduction in admission rate has been maintained throughout the 3 years postimplementation. Successful phone follow-up was achieved in all discharged patients within 24 hours and no adverse events were identified.

CONCLUSIONS

Low-risk febrile patients with SCD can be safely discharged from the ED. An automated notification system within the electronic medical record system can facilitate patient follow-up after ED discharge. Future quality improvement efforts aimed to further reduce admissions in this population should target patients with modifiable risk factors for serious bacterial infection.

Clinic Attendance of Youth With Sickle Cell Disease on Hydroxyurea Treatment

OBJECTIVE

The objective of this study is to describe rates of clinic attendance of youth with sickle cell disease prescribed hydroxyurea and examine potential demographic and medical factors related to consistent clinic attendance.

METHODS

Participants included 148 youth diagnosed with sickle cell disease and prescribed hydroxyurea during a single calendar year. Clinic attendance and potential demographic and medical factors related to attendance were extracted via systematic retrospective medical chart review.

RESULTS

Youth attended 90.3% of scheduled appointments and 85.1% of youth attended at least 80% of scheduled clinic appointments during the study window. Adjusting for other factors, multivariate analysis revealed families with fewer children in the household, families with private insurance, youth experiencing fever, and youth not experiencing pain during the calendar year were more likely to consistently attend clinic visits.

CONCLUSIONS

Adherence to clinic appointments is critical to optimizing health outcomes for youth with sickle cell disease and integral for adequate monitoring of youth prescribed hydroxyurea, in particular. Findings may aid providers in appropriately identifying possible barriers to clinic attendance to develop attendance promotion interventions.