When was the first defibrillator implanted?

When was the first defibrillator implanted?

• A. 1975
• B. 1980
• C. 1985
• D. 1990

Answer: (B)

The milestone being tested is when an implantable defibrillator first entered clinical use. The first implantable cardioverter-defibrillator was placed in 1980, a landmark achievement led by Michel Mirowski and Morton Mower at Sinai Hospital of Baltimore. This established the transition from external or hackneyed approaches to a device that could monitor heart rhythms and deliver a shock automatically when dangerous rhythms were detected. Dates earlier than that, like 1975, reflect either experimental efforts or non-implantable solutions, while later years (1985, 1990) follow after this foundational event. So, the correct year is 1980.

The milestone being tested is when an implantable defibrillator first entered clinical use. The first implantable cardioverter-defibrillator was placed in 1980, a landmark achievement led by Michel Mirowski and Morton Mower at Sinai Hospital of Baltimore. This established the transition from external or hackneyed approaches to a device that could monitor heart rhythms and deliver a shock automatically when dangerous rhythms were detected. Dates earlier than that, like 1975, reflect either experimental efforts or non-implantable solutions, while later years (1985, 1990) follow after this foundational event. So, the correct year is 1980.