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Effective treatment for ST-elevation myocardial infarction (STEMI) includes the 24/7 availability of reperfusion therapy, which is crucial for good clinical outcomes. In low- and middle-income countries, this is hindered by disparities in resource utilisation, irregularities in access to health care and organisational gaps. Due to the inaccessibility of primary percutaneous coronary intervention (PCI) for most patients, the more feasible and practical approach of pharmacoinvasive management must be incorporated into the systems of care for STEMI. This review focuses on the development of STEMI India, a not-for-profit organisation that aims to advance the field of STEMI management by imparting and disseminating the latest information from around the world on STEMI management to all those involved in STEMI care. The STEMI India model system of care includes a 3-model framework, based on infrastructure and workforce availability, and tailored to meet the needs of the society it caters to. After the successful implementation of the "Tamil Nadu STEMI" project, a nationwide system of care for STEMI has been developed, which has been endorsed by the Cardiological Society of India (CSI) and the Association of Physicians of India (API)., Competing Interests: The authors have no conflicts of interest to declare.

Aims: Established, evidence-based measures of radiation are required to minimise its hazards, while maintaining adequate image quality. The aim of this study is to evaluate radiation data and generate reference radiation levels for commonly performed coronary catheterisation procedures in India., Methods and Results: In this prospective, observational study, all procedures were performed in accordance with the established standards using Innova IGS 520/2100-IQ catheterisation laboratories. Demographic, procedural and radiation data were collected. Dose reference limits (DRL) were established as the 75 th percentile of the total distribution. There were 2,906 coronary angiograms (CAG), 750 percutaneous coronary interventions (PCI) and 715 CAG+PCI. DRLs for dose area product were: 19.6 Gy·cm 2 for CAG, 49.8 Gy·cm 2 for PCI and 72.0 Gy·cm 2 for CAG+PCI, respectively. Median cumulative air kerma levels were: 185 mGy for CAG, 533mGy for PCI, and 891 mGy for CAG+PCI. Male gender, higher BMI, combining CAG+PCI, fluoroscopy time, number of cine frames, and image acquisition settings were significant contributors to increased radiation dose., Conclusions: This study established reference radiation dose levels for diagnostic and interventional coronary procedures in India, which were comparable to and in the lower range of international standards., Competing Interests: V. Subban has received an institutional research grant from GE Healthcare. S. Amelot is a GE Healthcare employee. The other authors have no conflicts of interest to declare.