Operational realities and implementation challenges

Across Africa, healthcare systems operate under operational realities that differ substantially from those of the environments where most early warning systems were initially developed [[5], [6], [7]]. High nurse-to-patient ratios, inconsistent monitoring, limited access to pulse oximetry and observation charts, and the continued reliance on paper-based documentation all influence the feasibility of implementing structured deterioration-recognition systems [[5], [6], [7]].

Under these circumstances, the effectiveness of an early warning system depends not solely on its predictive accuracy, but also on its usability [5,10,18]. Even simple physiological scoring systems may be difficult to implement consistently in high-workload environments when staffing levels are limited, monitoring schedules are difficult to maintain, or escalation processes are poorly defined [5,7,18]. Similarly, protocols that assume immediate access to rapid response teams or intensive care beds may not align with local care structures [5,7].

Consequently, practical approaches in LMICs increasingly emphasise local validation, adaptation to local healthcare context and ongoing evaluation after adoption [5,7,19,20]. These strategies may include linguistic adaptation of supporting materials, simplification of escalation protocols, adaptation to available monitoring capacity, integration into paper-based documentation systems, and targeted staff education and implementation support.

Table 1 summarises practical strategies that may facilitate implementation in resource-constrained hospitals.

Implementation challenge | Why it matters | Potential solution
Staff shortages | Delays in observation and response | Tiered escalation pathways
Limited monitoring | Missed deterioration | Risk-based observation frequency
Lack of rapid response teams | Incomplete physiological assessment | Senior clinician trigger systems
Equipment shortages | Inconsistent score calculation | Paper-based charts
Training gaps | Delayed escalation | Structured competency programmes

Simple colour-coded observation charts linked to predefined escalation actions may represent feasible alternatives in hospitals where electronic monitoring systems and rapid response teams are unavailable. Likewise, integrating EWS into emergency triage workflows may enable earlier identification of high-risk septic patients at the point of first clinical contact.

Overall, these findings reinforce the view that EWS are not merely mathematical scores, but components of broader patient safety systems.