What is the clinical evidence from this study?

Study design: Other. Population: Myocardial contractility measurement. Intervention: Semiconductor strain gauge arch vs. Wire strain gauge. Primary outcome: Mechanical properties and frequency response.

What question did this study set out to answer?

This research aims to improve the direct measurement techniques of myocardial contractility in the left ventricle using strain gauge arches.

January 1, 1968Japanese Circulation JournalOpen Access

Experimental Studies on Myocardial Contractility : Direct Measurements of the Contractility of Left Ventricular Myocardium with the Strain Gauge Arch

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Key result

The semiconductor strain gauge arch demonstrated a linear relationship between applied force and bridge output voltage, with a uniform frequency response up to 350 cps.

Population

Beating heart in situ (experimental model)

Design

Preclinical

Authors

SHSumio HisadaTohoku University

Discussion

Member takes

Implication

Enables precise LV contractility measurement in animal models; leaves open translation to clinical research.

Key Points

This research aims to improve the direct measurement techniques of myocardial contractility in the left ventricle using strain gauge arches.
Utilized resistance-wire and semiconductor strain gauge arches to measure the heart's mechanical function.
Evaluated the mechanical properties and frequency response of different models of strain gauge instruments.
Designed several models with adjustable components for effective measurement.
The output voltage of 210mV was achieved with a force of 250g in Model L-3.
Demonstrated linear relationships between force and both displacement and output voltage.
Achieved uniform frequency response up to 350cps with the instruments tested.

Structured PICO

Population

Beating heart in situ (experimental model)

Intervention

Semiconductor strain gauge arch (Models L-3, L-6, VL-5)

Outcome

Mechanical properties and performance of the strain gauge arch (linearity, frequency response)surrogate

The development of a semiconductor strain gauge arch allows for more efficient and accurate direct measurement of left ventricular myocardial contractility in experimental models.

Cite This Study

Sumio Hisada (1968) studied Myocardial contractility measurement. Semiconductor strain gauge arch vs. Wire strain gauge was evaluated on Mechanical properties and frequency response. The semiconductor strain gauge arch demonstrated a linear relationship between applied force and bridge output voltage, with a uniform frequency response up to 350 cps.

synapsesocial.com/papers/6a636624cd7899abd6b707b2 https://doi.org/10.1253/jcj.32.789

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Experimental Studies on Myocardial Contractility : Direct Measurements of the Contractility of Left Ventricular Myocardium with the Strain Gauge Arch

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Experimental Studies on Myocardial Contractility : Direct Measurements of the Contractility of Left Ventricular Myocardium with the Strain Gauge Arch

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider