Results showed that wearing the N95 mask resulted in reduced respiration rate and oxygen saturation by pulse oximetry (SpO 2) within 1 hour, with elevated heart rate (mean change, 3.8 beats/min ...

In rats, a graphene “tattoo” stuck to the heart could treat an abnormally sluggish beat. Like a futuristic pacemaker, the device delivered electrical signals that kept the heart pumping ...