Physiological monitoring can be provided through a syncope sensor imbedded into an electrocardiography monitor, which correlates syncope events and electrocardiographic data. Physiological monitoring can be provided through a lightweight wearable monitor that includes two components, a flexible extended-wear electrode patch and a reusable monitor recorder that removably snaps into a receptacle on the electrode patch. The wearable monitor sits centrally on the patient's chest at the sternal midline and includes a unique narrow “hourglass”-like shape, significantly improving the ability of the monitor to cutaneously sense cardiac electrical potential signals, particularly the P-wave and QRS interval signals, which indicate ventricular activity in electrocardiographic waveforms. The electrocardiographic electrodes on the electrode patch are tailored for axial positioning along the midline of the sternum to capture action potential propagation in an orientation that corresponds to the aVF lead in a conventional 12-lead electrocardiogram, which senses positive P-waves.
