What does sphygmogram mean?
A sphygmogram is a graphic record of the arterial pulse, usually made with an instrument called a sphygmograph. It displays the pulse wave as a tracing, allowing clinicians or researchers to examine its shape, timing, and other measurable features. The term belongs primarily to medicine and cardiovascular physiology, where it can describe both an individual recording and the kind of information conveyed by such a record. Although sphygmograms contributed to the historical study of pulse characteristics and circulatory disorders, routine blood-pressure measurement today generally relies on the sphygmomanometer. The word is uncommon outside technical literature, but it is useful because it names the result of observing a pulse directly rather than merely recording a numerical pressure. Its unusual appearance also reflects its Greek medical roots: sphygmo- refers to the pulse, while -gram means a written or graphic record.
nounA graphic record of the arterial pulse, typically produced by a sphygmograph. It represents the pulse wave as a tracing that can be measured and interpreted medically.
- A graphic tracing of the arterial pulse, made by a sphygmograph and used to study the form and timing of the pulse wave.
"The physician reviewed the sphygmogram to assess the character of the patient's arterial pulse."
"The sphygmogram showed an unusually rapid upstroke in the arterial pulse wave."
"In historical cardiovascular studies, researchers compared sphygmograms obtained from patients with different diagnoses."
The regular plural adds -s and is used when referring to multiple pulse tracings.
"The study compared sphygmograms recorded before and after treatment."
A sphygmogram turns the invisible rhythm of an arterial pulse into a visible signature.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does sphygmogram come from?
Sphygmogram is formed from the Greek combining form sphygmo-, associated with sphygmos, meaning “pulse,” together with the suffix -gram, meaning “writing” or “record.” The compound belongs to the vocabulary of historical medicine and physiological instrumentation. Related English terms include sphygmograph, the recording instrument, and sphygmometer, an instrument used for measuring blood pressure.
How sphygmogram is actually used
This is a specialized medical term used mainly in clinical contexts and historical physiological research. In modern practice, arterial pressure is usually measured with a sphygmomanometer rather than by interpreting a sphygmogram.
Easily confused with sphygmogram
A sphygmograph is the instrument that records the arterial pulse, whereas a sphygmogram is the graphic record produced by that instrument.