Electrocardiography patch

A monitor, comprising:

• a adhesive backing having first and second end sections with a midsection between the first and second end sections, wherein the backing comprises a first surface and second surface;
• a pair of electrocardiographic electrodes, each electrocardiographic electrode provided on the first surface of the backing;
• a flexible circuit mounted to the second surface of the strip and comprising circuit traces, each electrically coupled to one of the electrocardiographic electrodes, wherein one circuit trace travels from one end section along the midsection to the other end section;
• a housing removably affixed to a non-conductive receptacle, the non-conductive receptacle affixed to one of the first or second end sections on the second surface of the backing;
• an actigraphy sensor comprised in the housing;
• an SpO2 sensor comprised in the housing;
• a blood pressure sensor comprised in the housing;
• and
• a wireless transceiver comprised in the housing to provide data collected from one or more of the electrocardiographic sensor, the SpO2 sensor, and the blood pressure sensor to an interfacing device or a server.