A wound that's deep and bloody, with bleeding that doesn't respond to direct pressure, is a good candidate for wound packing. Peter P. Taillac, MD, FACEP , Scotty Bolleter, BS, EMT-P [P] , A.J. Heightman, MPA, EMT P, Wound Packing Essentials for EMTs and Paramedics. Journal of emergency medical services. 2017, 42(4), 40-45. Data from the ROC studies showed that use of an impedance threshold device did increase survival with good brain function if chest compressions were performed at the recommended rate of about 100 per minute. Keith Lurie, MD, Ralph J. Frascone, MD, FACEP, FAEMS et al., Resuscitation Outcomes Consortium (ROC) Studies Dig Deep into the Science of Resuscitation. Journal of emergency medical services. 2017, 42(1), 28-32. Matthew Chinn, MD , M. Riccardo Colella, DO, MPH, An Evidence-Based Review of Prehospital Traumatic Cardiac Arrest, Journal of emergency medical services. 2017, 42(4), 26-33 Proper mask size selection is critical when assisting pediatric patients with ventilation or administering oxygen. Dorothy A. Habrat, DO , Daniel R. Shocket, MD, MPH TM , Darren Braude, MD, EMT-P, An Overview of EMS Pediatric Airway Management. Journal of emergency medical services. 2017, 42(3), 26-37. Scott D. Hax, NRP, FP-C, C-NPT , Ken Davis, BA, EMT-P, FP-C et al., Ketamine's Versatility Makes it a Powerful Tool for EMS. Journal of emergency medical services. 2017, 42(2), 44-48. Tourniquets are indicated when direct pressure is unable to establish bleeding control. William Selde, MD, Damage Control Resuscitation Principles Adapted for EMS Civilian Trauma. Journal of emergency medical services. 2017, 42(4), 34-39. Resuscitation Outcomes Consortium (ROC) Studies Dig Deep into the Science of Resuscitation Ketamine's Versatility Makes it a Powerful Tool for EMS An Overview of EMS Pediatric Airway Management An Evidence-Based Review of Prehospital Traumatic Cardiac Arrest Damage Control Resuscitation Principles Adapted for EMS Civilian Trauma Wound Packing Essentials for EMTs and Paramedics