Electronics for Medicine, commonly known as "E for M," was a pioneering company in medical electronics. Founded in the 1950s to make instrumentation for recording physiological signals from the heart, it was based in Westchester County, New York

Westchester County, New York

Westchester County is a county located in the U.S. state of New York. Westchester covers an area of and has a population of 949,113 according to the 2010 Census, residing in 45 municipalities...

.

Its product line ultimately included instrumentation for all cardiac-related medical procedures, including electrocardiography, electrophysiology

Electrophysiology

Electrophysiology is the study of the electrical properties of biological cells and tissues. It involves measurements of voltage change or electric current on a wide variety of scales from single ion channel proteins to whole organs like the heart...

, echocardiography

Echocardiography

An echocardiogram, often referred to in the medical community as a cardiac ECHO or simply an ECHO, is a sonogram of the heart . Also known as a cardiac ultrasound, it uses standard ultrasound techniques to image two-dimensional slices of the heart...

, and patient monitoring

Medical monitor

A medical monitor or physiological monitor or display, is an electronic medical device used in medical monitoring that displays the monitored data, and may or may not have the ability to transmit the data on a monitoring network...

. Its DR and VR series physiological recorders were used in almost every cardiac catheterization

Cardiac catheterization

Cardiac catheterization is the insertion of a catheter into a chamber or vessel of the heart. This is done for both investigational and interventional purposes...

 laboratory from the 1950s well into the 1980s, and are widely mentioned in cardiology papers of that era.

In 1979, the company was sold to Honeywell

Honeywell

Honeywell International, Inc. is a major conglomerate company that produces a variety of consumer products, engineering services, and aerospace systems for a wide variety of customers, from private consumers to major corporations and governments....

, and its name was changed to E for M/Honeywell. It was later sold to PPG Industries

PPG Industries

PPG Industries is a global supplier of paints, coatings, optical products, specialty materials, chemicals, glass and fiber glass. With headquarters in Pittsburgh, Pennsylvania, PPG operates in more than 60 countries around the globe. Sales in 2010 were $13.4 billion...

, and disappeared a few years after that.