Introduction: Point-of-care ultrasound (POCUS) is accepted as an important tool for evaluatingpatients presenting to the emergency department (ED) with dyspnea1 and undifferentiated shock.2Identifying the etiology and type of shock is time-critical since treatments vary based on thisinformation. Clinicians typically rely on the history, exam, and diagnostics tests to identify theetiology of shock. In resource-limited settings where there is reduced access to timely laboratory anddiagnostic studies. The use of POCUS enables rapid classification and directed treatment of shock.Additionally, POCUS can aid in the diagnosis of rarer tropical diseases that can be important causesof shock in resource-limited settings.

Case Report: We discuss a case of a pediatric patient who presented to an ED in Cusco, Peru, withacute dyspnea and shock. Point-of-care ultrasound was used to expedite the diagnosis of a rupturedpulmonary hydatid cyst, guide proper management of septic and anaphylactic shock, and expeditedefinitive surgical intervention.

Conclusion: In resource-limited settings where there is reduced access to timely laboratory anddiagnostic studies, the use of POCUS enables rapid classification and directed treatment of shock.

Introduction: Tetralogy of Fallot (TOF) is a congenital heart defect with characteristic features leading to unique physical exam and ultrasound findings. In settings where there is limited prenatal screening, TOF can present with cyanosis at any time from the neonatal period to adulthood depending on the degree of obstruction of the right ventricular outflow tract.

Case Report: This case describes a pediatric patient who presented with undifferentiated dyspnea and cyanosis, for whom point-of-care ultrasound (POCUS) supported the diagnosis of TOF. We highlight the important role POCUS can play in a setting with limited access to formal echocardiography or consultative pediatric cardiology services.

Conclusion: This report highlights the utility of POCUS as an inflection point in the diagnostic and management pathway of this patient, which is particularly important when working in a limited-resource or rural setting.

Introduction: Ultrasound-guided nerve blocks (UGNB) represent a procedural skill set that can be used to treat acute pain by physicians in the emergency department (ED). However, limited access to education and training represents a barrier to widespread adoption of this core skill set. The implementation of UGNBs within the ED can aid in resource allocation, particularly in limited-resource settings.

Case Series: In this case series we discuss our experience using tele-ultrasound to train emergency physicians on the use of UGNBs within our international point-of-care ultrasound fellowship in Peru. We highlight the potential role UGNBs serve in management of acute pain when working in resource-limited, public safety-net hospitals in Peru.

Conclusion: Tele-ultrasound may represent a strategy for teaching procedures such as UGNBs via remote guidance and supervision.