Instead of "plethysmography": "kenoseography" and "plesmonegraphy"

Area of Science:

• Medical instrumentation
• Physiology
• Vascular diagnostics

Background:

• The term "Plethysmography" has historically been used for recording volume changes.
• This term implies recording an increase in volume (plethysmos).
• Current medical practices utilize volume measurement for diagnostics, but the terminology may be imprecise.

Purpose of the Study:

• To evaluate the historical accuracy and current applicability of the term "Plethysmography".
• To propose alternative terminology for specific volume measurement techniques.
• To ensure precise scientific communication in medical diagnostics.

Main Methods:

• Historical analysis of early volume recording techniques.
• Linguistic analysis of the term "Plethysmography" and its Greek roots.
• Review of current clinical applications of volume measurement, particularly for deep vein thrombosis diagnosis.

Main Results:

• Early recordings by Glisson and Swammerdam, focused on constant muscle volume during contraction, are argued to be mislabeled as "plethysmography".
• These historical measurements are suggested to be more accurately termed "isography".
• Current venous outflow measurements, which record a decrease in limb volume, are the opposite of the "plethysmography" definition.

Conclusions:

• The term "Plethysmography" is not felicitous for current clinical applications, especially venous outflow measurement.
• Alternative terminology derived from ancient Greek medical literature is proposed for greater accuracy.
• Precise terminology is essential for clear scientific understanding and accurate diagnosis, particularly in vascular medicine.