IntroductionCritical care is an important component of health care systems around the world (Figure 1). Caring for critically ill patients in resource-rich settings typically involves treatment in intensive care units (ICUs) staffed with highly specialized health care professionals, systematic monitoring and use of high-cost technology [1]. Unfortunately, these components are not always available in resource-limited settings [2, 3], where the burden of disease is greater [4], outcomes are poorer [5, 6], and local characteristics require context-specific approaches to the organization of critical care services.Critical care delivery, education, and research require a global perspective based on epidemiologic considerations. The burden of critical illness in resource-limited settings is not well described, but the best available estimates suggest that it may be greater than in resource-rich settings [7, 8] due to deficiencies in access to health care, emergency triage, and lack of early recognition [9][10][11]. Mortality for adults with sepsis [5, 12, 13] and acute respiratory distress syndrome (ARDS) [14][15][16] in resource-limited settings is higher than in resource-rich settings, and decedents are usually young (mean age 35 years vs. 61 years in United States) [12,17], which contributes to a greater negative downstream social and economic impact. Similarly, there is a higher burden of sepsis and respiratory infection mortality among children [18][19][20][21]. Recent epidemiological changes in global health have created a ' double burden of disease' to resource-limited settings [9,22] due to an increase in the prevalence of non-communicable diseases combined with lack of improvement in the long-recognized higher burden of communicable diseases, maternal and child mortality, malnutrition, and human immunodeficiency virus (HIV)-related complications.Health care professionals from resource-rich and resource-limited settings should take a global perspective on critical care for both ethical and practical reasons. Ethically, health care professionals, trainees, professional societies, non-governmental organizations (NGOs), and international organizations from resource-rich settings have the capacity of deploying resources to improve outcomes for critically ill patients in resource-limited settings [11,23,24]. Assistance can include financial help, knowledge exchange in the form of research and educational partnerships, and capacity building in operations and implementation science. From a practical point of view, supporting resource-limited settings is also important given that inter-related economies, Caring for critically ill patients is challenging in resource-limited settings, where the burden of disease and mortality from potentially treatable illnesses is higher than in resource-rich areas. Barriers to delivering quality critical care in these settings include lack of epidemiologic data and context-specific evidence for medical decision-making, deficiencies in health systems organization and resources, and in...