Which medical monitoring device was first developed in 1953 but wasn't widely adopted in hospitals until the 1970s due to its initial size and cost?

The development of medical devices has transformed patient care throughout history. Some innovations have fascinating origins that aren't widely known. This poll tests your knowledge about a significant product development milestone in medical technology that changed how healthcare professionals monitor patients. Understanding the history behind medical innovations gives us appreciation for the evolution of healthcare tools we rely on today.

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Pulse oximeter
Digital thermometer
Automated blood pressure cuff
Electronic stethoscope