CPR feedback devices are like expert coaches guiding rescuers through the high-stakes dance of saving lives. Picture this: real-time feedback on compression depth, rate, and hand positioning, ensuring each chest compression is precision-engineered for maximum effectiveness. Studies sing praises of these devices, suggesting they’re the secret sauce behind CPR success stories for adult patients in cardiac arrest. With their help, rescuers become superheroes, swooping in with confidence and skill, delivering CPR.