With an eye toward helping those potentially suffering from COVID-19, Mountain View, Calif.-based Alivecor Inc. said its six-lead electrocardiogram (ECG), known as the Kardiamobile 6L, now is allowed for use in the measurement of a patient's QTc and detection of QT prolongation. The Kardiamobile 6L enables patients to take a six-lead ECG outside a doctor’s office.