What question did this study set out to answer?

This research aims to adapt heated-film anemometry for detailed hemodynamic studies of aortic velocity fields.

December 1, 1968Circulation ResearchOpen Access

Application of Heated-Film Velocity and Shear Probes to Hemodynamic Studies

View Full Paper

Ask AI

Bookmark

Why the study?

Does a heated-film anemometer system accurately measure in-vivo aortic velocity fields and shear stress in animal models?

Population

In-vitro models and in-vivo models.

Comparison

Constant-temperature heated-film anemometer system vs Orifice meter, electromagnetic flowmeter…

Design

Preclinical

Authors

SLSung C. LingNational Institutes of Health HAH. B. AtabekHoward University DFDonald L. FryGeneral / Preventive / Lipids

Discussion

Member takes

Implication

Validates heated-film anemometry for animal aortic flow; leaves open human translation and clinical adoption.

Key Points

This research aims to adapt heated-film anemometry for detailed hemodynamic studies of aortic velocity fields.
Developed two types of probes: velocity probe and fluid shear stress probe.
Conducted in-vivo studies on anesthetized dogs and pigs along the thoracic aorta.
Used glycerin-water mixture and blood in rigid circular tubes for initial testing.
Measured velocity profiles were blunt along the aorta.
Peak wall-shear stresses reached about one-third of the endothelial yield stress.
Flow-pulse forms obtained were similar to those from an electromagnetic flowmeter.

Structured PICO

Does a heated-film anemometer system accurately measure in-vivo aortic velocity fields and shear stress in animal models?

Population

In-vitro models (rigid circular tubes with glycerin-water mixture and blood) and in-vivo models (anesthetized dogs and pigs).

Intervention

Constant-temperature heated-film anemometer system (velocity probe and velocity-gradient/fluid shear stress probe)

Comparator

Orifice meter, electromagnetic flowmeter techniques, and established theoretical values

Outcome

Accuracy and correlation of velocity and shear stress measurements compared to established theory and standard flowmeterssurrogate

Heated-film velocity and shear probes provide accurate in-vivo hemodynamic measurements of aortic velocity fields and shear stress, correlating well with standard flowmeter techniques.

Cite This Study

Ling et al. (1968) studied this question.

synapsesocial.com/papers/6a212de87fce6f1e0bc3b6f0 https://doi.org/10.1161/01.res.23.6.789

View Full Paper

Ask AI

Bookmark

Application of Heated-Film Velocity and Shear Probes to Hemodynamic Studies

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Application of Heated-Film Velocity and Shear Probes to Hemodynamic Studies

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider