Highlights
- The Iranian Comprehensive Code Stroke Management Program (ICSM Phase III) demonstrated that a multi-faceted empowerment program for EMS can nearly triple the rate of intravenous alteplase administration (from 13.94% to 39.49%).
- Standardized prehospital protocols significantly reduced critical time-sensitive intervals, facilitating earlier intervention in the ‘golden hour’ of stroke care.
- The study highlights a stark contrast between intervention and control groups, where the latter showed a declining trend in monthly alteplase administrations, emphasizing the necessity of active provider empowerment.
- Future iterations of the program require evaluation of long-term functional outcomes (e.g., modified Rankin Scale scores) to validate the clinical efficacy beyond process metrics.
Background
Acute ischemic stroke remains a leading cause of global morbidity and mortality. The fundamental principle of management, summarized by the phrase “Time is Brain,” underscores the reality that approximately 1.9 million neurons are lost every minute an ischemic event goes untreated. While intra-arterial thrombectomy and intravenous thrombolysis (IVT) with alteplase have revolutionized outcomes, their efficacy is strictly time-dependent.
The prehospital phase—the period between symptom onset and hospital arrival—is often the most disorganized segment of the stroke care continuum. In many developing healthcare systems, including those in the Middle East, challenges such as inconsistent protocols, lack of specialized EMS training, and poor coordination between prehospital and in-hospital teams create significant barriers to timely reperfusion therapy. The Iranian Comprehensive Code Stroke Management Program (ICSM) was initiated to address these systemic gaps through a phased implementation of evidence-based standards.
Key Content
The ICSM Phase III Framework and Methodology
The Phase III study utilized a quasi-experimental design to evaluate the efficacy of an updated national stroke protocol. The intervention centered on the Babol Emergency Medical Services (EMS), involving 248 suspected stroke codes, compared against a control group in Mazandaran EMS (n=900). The core of the intervention was a “multi-faceted empowerment program” which likely integrated advanced communication tools, standardized triage algorithms (such as the Cincinnati Prehospital Stroke Scale), and rapid pre-notification systems to prepare hospital stroke teams before the patient’s arrival.
Prehospital Time Interval Optimization
The study reported significant reductions in most prehospital time intervals within the intervention group. These intervals typically include:
- Dispatch Time: The duration from the emergency call to ambulance mobilization.
- On-Scene Time: The time spent by paramedics evaluating and stabilizing the patient.
- Pre-notification Lead Time: The time given to the receiving hospital to activate the ‘Code Stroke’ team.
Interestingly, transport time remained largely unchanged, suggesting that the improvements were driven by procedural efficiency and clinical decision-making on-scene rather than simply faster driving. This highlights the importance of ‘process’ over ‘speed’ in medical logistics.
Impact on Thrombolytic Therapy (Alteplase)
The most striking finding of the ICSM Phase III was the impact on intravenous alteplase (tPA) administration. In the intervention group, the rate of alteplase administration per hospital-confirmed stroke code rose from 13.94% pre-intervention to 39.49% post-intervention. This represents an absolute increase of 25.55% (P < 0.001).
Conversely, the control group, which received only standard training, saw a significant decrease in the mean monthly number of alteplase administrations. This divergence suggests that without active, structured empowerment programs, stroke care quality may not only stagnate but can actually decline due to system fatigue or evolving clinical complexities.
Clinical and Systemic Divergence
Data from the 1,131 suspected stroke codes revealed that only 35% (n=400) were hospital-confirmed. This discrepancy underscores the challenges of prehospital triage and the high rate of “stroke mimics” (e.g., hypoglycemia, migraines, or postictal states). The ICSM intervention’s success in increasing the alteplase rate despite these mimics suggests that the empowerment program improved the EMS providers’ ability to identify eligible candidates more accurately and transport them to primary stroke centers within the appropriate treatment window.
Expert Commentary
The results of the ICSM Phase III are significant for several reasons. First, the near-tripling of the alteplase administration rate brings the intervention group’s performance closer to the benchmarks seen in high-income countries with mature stroke networks. For healthcare policy experts, this study provides a scalable model for low- and middle-income countries (LMICs) to improve stroke outcomes without necessarily requiring massive infrastructure investment; instead, the focus is on human capital and protocol refinement.
However, some limitations must be considered. The study utilized a quasi-experimental design rather than a randomized controlled trial, which introduces potential confounders. Furthermore, while the increase in alteplase administration is a vital process metric, it does not always correlate linearly with functional recovery if the “Door-to-Needle” (DTN) time within the hospital remains high. The next phase of research must bridge the gap between EMS arrival and actual drug infusion times to ensure the entire pathway is optimized.
Mechanistically, the reduction in on-scene time and improved triage likely reflect a reduction in ‘cognitive load’ for paramedics. By providing clear, evidence-based algorithms, the program allows EMS providers to move from a state of uncertainty to a state of standardized action, which is crucial in high-stress, time-sensitive environments.
Conclusion
The Iranian Comprehensive Code Stroke Management Program (Phase III) serves as a potent demonstration of how structured EMS empowerment can transform acute stroke care. By standardizing protocols and enhancing the coordination between prehospital and hospital phases, the program significantly reduced delays and expanded the pool of patients receiving life-saving thrombolysis.
Moving forward, the national evaluation of this program should prioritize the collection of 90-day functional outcome data (mRS) and mortality rates. Additionally, integrating advanced technology such as mobile stroke units or tele-stroke consultations could further augment the successes seen in Phase III. For clinicians and health administrators, the message is clear: the prehospital phase is not merely a transport period, but a critical therapeutic window that requires rigorous, evidence-based management.
References
- Alijanpour S, Bahramnezhad F, Mowla A, Shifteh S, Hadinezhad Z, Khafri S, Dehghan Nayeri N. Improvements in Time-Sensitive Stroke Care and Alteplase Administration: The Iranian Comprehensive Code Stroke Management Program (ICSM Phase III). Stroke. 2026-03-04. PMID: 41778312.
- Powers WJ, et al. Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke. Stroke. 2019;50(12):e344-e418. PMID: 31662037.
- Emberson J, et al. Effect of treatment delay, age, and stroke severity on the effects of intravenous thrombolysis with alteplase for acute ischaemic stroke: a meta-analysis of individual patient data from randomised trials. Lancet. 2014;384(9958):1929-35. PMID: 25106174.
